Tektronix 7A13 Instruction Manual

1 Ν ST F t U CT10 Ν
ΜΑΝ U A L
Serial
Number 4/o -~-, -'
7Α 13
A MPL I F I ER
.rte
ι
Te k tronix, Inc .
S . W.
M illi k an Way
070-0978-00
"
Ρ. Ο .
Box
500 "
B eaverto n ,
Oregon
97005
"
Ph o n e
644-0161
"
Ca b les : Te k tronix
1069
WARRANTY
All Tektronix instruments are warranted
against defective materials and workmanship for one year. 7i ktronix transformers,
manufactured in our plant, are warranted
for the life of the instrument .
Any questions with respect to the warranty mentioned above should be taken
up with your Tektronix Field Engineer .
Tektronix repair and replacement-part
service is geared directly to the field,
therefore all requests for repairs and replacement parts should be directed to the
Tektronix Field Office or representative
in your area . This procedure will assure
you the fastest possible service. Please
include the instrument Type and Serial or
Model Number with all requests for parts
or service .
Specifications and price change privileges reserved .
Copyright '0' 1969 by Tektronix, Inc.,
Beaverton, Oregon . Printed in the United
States of America . All rights reserved .
Contents of this publication may not be
reproduced in any form without permission of the copyright owner.
TA BLE
S ECTION 1 S PE CI F ICATIO N
OF
Page
Intro1
d u ctio n
-1
E lectrical C h aracteristics
Typ e 7Α 13
CO N T EN TS
S ECTION 3 CIRC U IT DESCRIPTIO N
Page
Introd u ction
3-1
1-1
B loc k Diagram Descri p tion
3-1
Deflection Factor
1-1
In p u t Mode Switc h es
3-1
Commo n M ode Sig n al R ange
1-1
In pu t Atten u ators
Differential Signal R ange
3-1
1-1
F re q u ency R es p onse
In pu t So u rce and E mitter F ollowers
3-1
1-1
Overd rive
1-1
Differential a n d Common
Recovery
Mode
Common
Maxim u m
Re j ection
R atio
In p u t V oltage
1-1
1-2
In p u t R an d C
1-2
M axim u m
1-2
Gate C u rrent
DC Drift
1_2
N oise
Dis p laye d
1-2
Com p arison V oltage
1-2
System C h a r acteristics
M od e
Signal Clam p s 3-1
Differe n tial Com p arator
3-1
χ 1 an d χ 10 Gai n -Switc h ing Am p lifier
3-1
χ 1 , χ 2 a n d Χ 5 Gain-Switc h i n g Am p lifier
3-1
Driver Am p lifier
3-1
O u t p u t Am p lifier
3-1
Trigger Am p lifier
3-1
Fee d bac k L imiter
3-3
R eado u t L ogic
1-2
V c Decimal
E nviro n mental C h aracteristics
L am p
3-3
Driver
3-3
1-2
Detailed Circ u it Descri p tio n
3-3
Altit
ude
1-2
Tra3-3
n s p ortation
1-2
SE CTIO N
2
O PER ATI N G
I N ST RU CTIO N S
In p u t
M ode
Switc h
In p u t Atten u ators
3-3
In p u t So u rce and E mitter F ollowers
3-3
Intro du ction
2-1
F ront- P anel Descri p tion
2-1
Test Set u p C h art
2-1
Differential Com p arator
3-4
F amiliarization P roce d u re
2-2
Χ 1 and X10 Gain-Switc h ing Am p lifier
3-4
First-Time O p eration
2-2
Χ 1, Χ 2 an d Χ 5 Gain-Switc h ing Am p lifier
3-5
F ront P a n el A d ju stments
2-3
M eas u rements
M eas u rement
Driver Am p lifier
3-5
2-3
Ou t p u t Am p lifier
3-5
2-3
Differential Com p arator O p eration, DC
Meas u rement
Trigger Am p lifier
2-4
3-5
F eed bac k L imiter
3-5
Single- E n d ed O p eration, Waveform
M eas u rement
2-4
R ea d o u t L ogic and Vc Decimal Lam p Driver
3-5
L ow
V oltage P ower S u pp lies
Differential Am p lifier O p eration
3-5
2-4
Com p arison Voltage Ge n erators
3-5
E xam p les of Voltage/Signal
Single-en d e d
o p eration
DC
U se of Vc O U T 0-10 V Ti p J ac k
2-4
2-5
General Disc u ssion
Common
Mode
Differe n tial Sig n al an d Common
Clam p s
M ode
Signal 3-4
S ECTIO N 4 MAI N T EN A N C E
P reventive
Maintenance
4-1
Re j ection
2-6
Am p lit u d e an d Commo n M o d e R e j ection
2-9
General
4-1
Factors Wh ic h Affect C MRR
2-9
Cleaning t h e Fro n t P anel
4-1
Differential Am p lifier A pp lications
2-11
Cleaning t h e Interior
4-1
Χ - Υ A p p lications
2-11
V is u al Ins p ection
4-1
2-11
Tra n sistor C h ec k s
4-1
P assive Signal Co u p ling
M et h o d s
Ty p e
7A13
TA BLE OF CO N TEN TS (Cont)
Page
Calibration
4-1
Corrective M aintenance
4-1
General
Page
C h ec k /Ad ju st Ste p Atten u ator DC
C h ec k /Ad ju st
Position
B alance
Cen ter
5-8
5-8
4-1
C h ec k /Ad ju st Trigger DC
4-1
Parts
C h ec k /Ad ju st Sig n al O u t p u t DC
4-2
Soldering Tec h ni q u es
Ch ec k /Ad ju st Trigger Ou t p u t DC
4-2
Ch ec k /Ad ju st Gain
5-9
4-4
C h ec k Gate Cu rrent
5-9
Obtaining Re p lacement
S p ecial
P arts
Switc h R e p lacement
L am p R e p lacement
4-5
Tro u bles h ooting
4-5
Intro d u ction
4-5
General
4-5
In d icator Oscillosco p e
Op erating
P roced u res
a n d Control Settings
Tro u ble Sym ptoms
4-5
4-5
4-5
V is u al Ins p ection
4-6
Calibratio
n C h ec k
4-6
Detaile d Tro u bles h ooting
4-6
4- 6
General
Test
E q u i p ment R ecommended
4-6
Tro u bles h ooting by Direct
Tro u bles h ooting Ai d s
Re p laceme n t
4-6
Tro u bles h ooti n g Tec h ni q u es
4-7
Com ponent Ch ec k s
Instr u ment
R e p ac
4-6
4-8
k aging
4-9
SECTIO N 5 PERFORMANC E CHECK/
5-1
Test5-1
Eq u i p ment R e q u ire d
Ge n eral
Test
5-1
5-1
E q ui p me n t
S h ort- Form
P roced u re
P erformance
P erformance
C h ec k /Calibration
C h ec k /Calibration
General
P roced u re
5-9
L evel
L evel
P reliminary Com p arison Voltage C h ec k &
Th ermal Com p ensation Ad ju stment
5-9
5-10
5-10
Ch ec k /Ad ju st Common
Com pensation
5-10
Mode T h ermal
I n p u t R esistance & DC Atten u ation
Ad ju stments
R atio
5-11
C h ec k /Ad ju st +In p u t 10 Χ DC
Atten u ation R atio
5-11
C h ec k /A d ju st +I n p u t 1 Χ DC In p u t
R esistance
5-12
C h ec k/Ad ju st +In p u t 100 Χ DC
Atten u ation Ratio
5-13
C h ec k/Ad ju st -In p u t 10 Χ DC
Atten u ation Ratio
5-13
Check/Adjust -I n p u t 1 Χ DC In p u t
R esistance
5-14
H ig h - F re q u ency Com p ensatio n Ad ju stments
C h ec k /Ad ju st H ig h - F req u ency
5-15
Atten u ator Com p ensation Ad ju stments
5-20
Com p ensation
C h ec k /A d ju st -I n p u t Atten u ator
Com p ensatio n
Commo n Mode
R e j ection
5-15
5-20
5-23
Ad ju stments
C h ec k /A d ju st Am p lifier Hig h - F re qu ency
Commo n M od e R e j ection
5-25
5-25
5-3
C h ec k /A d ju st Atten u ator Common
R e j ection at 100 Hz
Mo d e
5-27
5-5
C h ec k /Ad ju st Atten u ator Common
R e j ectio n at 10 kH z
Mode
5-28
5-5
Trigger & Signal Am p lifier R es p onse C h ec k s
5-6
C h ec k Trigger Am p lifier Gain an d Ste p
DC an5-28
d Gain A d ju stments
5-7
R es p onse
C h ec k /Ad ju st P osition Center & DC B ala n ce 5-7
C h ec k Trigger Am p lifier Hig h - F re q u ency
C h ec k /A d ju st Χ 10 DC B ala n ce
5-8
Si n e Wave R es p onse
Preliminary P roced u re
5-9
C h ec k Com p arison V oltage
C h ec k /Ad ju st +I npu t Atten u ator
Com p ensation
CA LI BRATIO N
Intro d u ction
B alance
5-28
5-30
Ty p e 7 Α 13
TA BLE OF CONTEN TS (Cont)
Page
C h ec k Signal Am p lifier
R es p onse
Hig h - F re q u ency
C h ec k Signal Am p lifier 5-MHz
Sine Wave R es p onse
B andwi d
5-31
th
Com p a rison V oltage Ad ju stments
C h ec k /Ad just
5-31
10- Volt Calibration
Com p arison Voltage
L
5-32
inearity
C h ec k V olts Co u nter Mec h a n ical
Ch ec k E lectrical Zero
Noise & Overdrive
Recovery
C h eck N oise
C h ec k Over d rive
B ac k las
5-33
h
5-33
5-34
C h ec k s
5-34
5-35
Recovery
Time
S ECTIO N 6 ELE CT R ICA L PA R TS
L IST
Abbreviations & Symbols
P arts Ord eri n g Information
5-31
C h ec k /A d ju st 1- V olt Calibratio n
5-33
C h ec k
Page
5-36
SE CTIO N 7 DIAG RAMS A ND ME C HA N ICA L
P A RTS I LLU ST R ATIO NS
Diagrams
M ec h a n ical Parts Ill u strations
S E CTIO N
8
ME C H A N ICA L PA RTS LIST
Mec h anical P arts List Information
I n dex of M ec h anical P arts Ill u st ratio n s
M ec h a n ical P arts L ist
Accessories
1-1
Fig.
Type 7
.
Differential Comparator
Α13
.
Typ e 7 Α 13
SECTION I
SPECIFICATION
Ch ange information, if any, affecting t h is section will be fo u n d at t h e
rear of t h e man u al .
I N T R OD U CTIO N
Th e Ty p e 7Α 13 V ertical Plug-In is α DC co u p led d iffere n tial
comparator wit h excelle n t commo n -mod e re j ection a n d mediu m gain c h aracteristics for me d i u m level applications. T he
Type 7 Α 13 is desig n ed fo r use in Tekt ronix 7000 se r ies oscillosco p es. It may be u sed as α d iffe r en tial i n pu t p ream p lifier
o r conve n tion al p ream p lifie r in ad d ition to its u se as α compa r ator .
In t h e d ifferential in p u t mo d e, t h e d y namic ra n ge allows
t he ap p licatio n of common-mo d e signals up to +10 o r -10
volts to be a p p lie d to t h e u nit wit h o u t atte nu ation . Commonmo d e re j ection ratio of at least 20,000:1 at DC to 100 kHz
permits measu reme n ts of diffe r e n tial sig n als less t ha n 1 m V
in am p lit ud e on 10 volt commo n -mod e signals .
Wh en u sed as α differe n tial com parator, t h e Type 7 Α 13
h as an effective offset ra n ge of 10,000 d ivisio n s .
T h e electrical c h a r acteristics desc ribe d n Table 1-1 are
valid over t he stated envi r onme n tal r ange fo r nstru me nts
calibrate d at an ambien t tem p e rat u re of +20° C to +30° C
a n d afte r α 20-min u te wa rm u p p eriod un less ot h e r wise n oted .
i
TA BLE 1-1
ELE CT R ICAL CH AR ACT ER ISTICS
C h aracteristic
Deflection Factor
( V O L TS/DI V )
Calib r ate d R ange
Gain Ratio Acc u racy
Un calib r ated ( Va r iable)
Common Mode Signal
R a n ge
1 m V /Div to
50 mV/ Div;
Χ 10 Vc Ιη
10 mV /Div to
50 mV/ Div;
X10 V c O u t
0 .1 V /Div to
0 .5 V /Div ;
Χ 10 V c In
0 .1 V /Div to
0 .5 V /Div ;
Χ 10 V c O u t
Differential Signal R ange
1 m V /Div to
50 mV/ Div ;
ΧΙΟ V c In
10 mV /Div to
50 mV /Div ;
X10 Vc Ou t
P erforma n ce R e q u ireme n t
At least -1--500 V a n d -500 V
At least 0 .8 V
At least 8 V
0 .1 V /Div to
0 .5 V /Div;
Χ 10 V c In
0 .1 V /Div to
0 .5 V /Div ;
X10 V c Ou t
1 V /Div to 5 V /Div;
At least 80 V
Χ 10 Vc Ιη
F req u ency R es ponse
ELE CT R ICAL C H A R ACT ER ISTICS
i
C h aracte r istic
1 V /Div to 5 V /Div;
Χ 10 V c Ιη
P erformance R e q u i rement
1 m V /Div to 5 V /Div, 12 ste ps i n
α 1, 2, 5 seq u ence
Wit h i n 1 .5% of GAI N a d ju sted
at 1 mV /Div
Contin u o u sly variable :
exte n d s
deflectio n factor to at least 12 .5
V /Div
At least +10V and -10V
At least +100V a nd -100V
(8 Div Reference)
FULL B a n dwidt h
U pp e r L imit
AC (Ca p acitive)
Co u p le d Inp u t
Lower Ban d widt h
F re qu ency
5 MH z Ban d width
Over d rive Recove r y
(IX Atten u ator at
1 m V /Div)
Commo n Mod e R e jectio n R atio
1 m V /Div to
50 m V /Div
X10 V c In'
DC to 100 kH z
See Table 1-2, System C h aracte ristics
10 Hz o r less
DC to 5 MH z wit h in 500 kH z
1 μS
to
recover within
See
Fig .
1-2 .
At least 20,000 :1, 20 V Ρ- Ρ or less
test sig nal
100 kH z to 1 MHz
At least 10,000 :1, 10V Ρ- Ρ or less
test signal
1 MHz to 10 MHz
CMRR = 10,000/freq u e n cy (MHz)
20 MHz
At least 250 :1, 1 V Ρ- Ρ o r less test
signal
10 mV /Div to
50 mV /Div; Χ 10 V c
Ou t;
At least +500V a nd -500V
1 .5 mV,
0.1 ms to recove r wit h in 0 .5 m V,
followi n g r emoval of a +10V or
-10V overd rive signal .
0 .1 V /Div to 5 V /Div;
Χ 10 Vc In or Out
DC to 10 kHz
At least 2,000 :1
AC Co u p led at 60 Hz I At least 500 :1
Specification-Type 7Α 13
TABLE 1-1
ELE CT R ICAL C H A R ACT ER ISTICS
C h aracteristic
Maxim um I np u t V oltage
DC (Direct) Couple d
DC -Ι - Pea k AC
1 m V /Div to
50 m V /Div;
Χ 10 V c Ιη
C h aracte r istic
(cont)
P erformance Re q uirement
40 V DC . 40 V Pea k AC, 1 kH z or
less
10 m V /Div to
50 m V /Div ;
X10 VC Out
400 V DC . 400 V P ea k AC, 1 kH z
or less
0 .1 V /Div to
0 .5 V /Div;
X10 Vc O u t
1 V /Div to 5 V /Div ;
Χ 10 V c Ιη
500 V DC . 500 V P ea k AC, 1 kHz
o r less
0 .1 V /Div to
0 .5 V /Div;
Χ 10 V c In
Dis p layed
gentially
N oise (TanM eas u red)
Com p a r ison V oltage
R ange
Acc uracy
E lectrical Ze r o
Vc O U T R esistance
P erformance
R e q u irement
400 μ V o r less at 1 m V /Div i n
Ty p e 7700-Series or 7500-Se ries
in d icator oscillosco p e
OV to -4-10V
± 0 .1 % ο setti ng +5 m V )
0.5 m V or less
15 k Ω wit h i n 5 k Ω
SYSTEM CH A R ACT ER ISTICS
T h e system c h a racte r istics liste d in Table 1-2 a r e to s p ecify
t h e p e rfo rma n ce of th e pl u g-in with va rio u s combinatio n s of
p robes a n d in vario us in d icator oscillosco pes .
TA BLE 1-2
SYST EM C H A R ACTERISTICS
In d icato r I Pr o b e Ι BW Ι Τ , Ι
'Acc u racy W
Ι
Sig O u t
AC (Ca pacitive) Co up - 500 V DC
Oscilloscope
(MHz) I n s)
'UT 1
4 ΙΝΤ
BW
Τr
led In(MHz)
put
CA L Ι CA L Ι CA L
Ι (n s)
t
1 .5
2 .5
3 .5
55
6 .4
nput R and C
7500 Se ries None
75
4 .7
4 .7
1 .5
2 .5
3 .5
55
6 .4
Resista nce
1 ΜΩ within 0.15%
Ρ6053
75
Ρ 6048
Ca p acitance
1 .5
2 .5
3 .5
55
6 .4
7700 Se ries N6 n e 100
3 .5
R an d C Pr od u ct
Wit h in 1 % for all d eflection fac1 .5
2 .5
3 .5
55
6 .4
Ρ 6053 100
3 .5
for set t i ngs .
Ρ 6ο 48
Maxim um Gate C u rrent
all deflection facto rs . Plug-in GAI N
'Accur acy percentages apply
0°Cto+35°C
Ο.2 πΑ 0r less ( Ο .2 D Ίν at 1 m V /D Ίν)
must be set at t h e d eflection
to facto r desig n ated at t h e ap p licable
B ot h Inpu ts
position of t h e V O LTS/DI V switc h . Wh e n α prob e is used , t h e GAI N
m u st be set with the calib ration signal a p plied to the probe ti p .
+35 0 C to +50 0 C
2 ηΑ or less (2 D Ίν at 1 m V /D Ίν )
2E XTe rn al CA L ibr ator, 0 ° C to 50 ° C : T h e p l u g-i n GAI N is set (within
B ot h npu ts
10 ° C of t h e op erating temp e rat u re) u si ng an exte rn al calib r ato r
DC D r ift
signal wh ose accu racy is wit h i n 0.25% .
Drift With Time (Am'I N Te rn al CAL ib r ator, 15 ° C to 35 ° C : T he plug-in GAI N is set usi n g
th e oscilloscop e's own calib rator and t h e i n str u me nt is o pe r ati n g
bie n t Tem p erat ure
within the +15 ° C to +35 ° C range .
an d L ine Voltage Co n'I N Tern al CA Lib rato r, 0 ° C to 50 ° C : T he plug-in GAI N is set (wit hin
stant)
10 ° C of the o p e rating tem pe rat ur e) usi n g t h e oscilloscope's own
1 m V Ρ- Ρ or less o r 0 .1 Div o r less
calibrator, and t h e inst rum ent is o pe rati n g within t he 0 ° C to +50 ° C
S h o rt Term
range .
(w h ic h ever is greater) any 1 mi nu te
mini n terval with i n 1 h o u r afte r 20
utes from turn-on .
ENV I RO NMEN TA L C H A RACT ER ISTICS
I
I
Long Term
D rift W it h Ambie n t
Tem pe r at u re ( Line V oltage Consta n t)
Am p lifier Crosstal k
1 m V Ρ- Ρ or less o r 0 .1 Div (w h ic h ever is g reate r) d u ring any h o u r
after t h e first h o u r and 20 minutes from turn-on .
2 m V /10° C or less, 0.2 Div/10° C
(w h ic h ever is greater)
1 % o r less s h ift wit h in 20 ns of
ste p of fast rise s q u a r ewave w h en
switch i n g u nd r iven i n p u t from
G N D to AC o r DC
TA BLE 1-3
Ty p e 7Α 13 teste d alone (se p arate from in d icator oscillosco p e)
C h aracteristic
Altit ud e
Non-Operating
Trans p o r tation
Information
To 50,000 feet a n d -55° C
Q u alified u nde r N ational Safe
Tra nsit Committee test p roced u re
1 Α , Catego r y ΙΙ
Specification-Type 7Α13
J `ξ
Ο α
--------------------------------------- ----------
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m
ά
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ΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙ . .:~ 1ι///""""" ΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙιΙ1 ιΙ111 ΙΙΙ/ ΙΙΙΙΙΙΙΙΙΙΙΙι1 Ι 111111 ΙΙΙΙ//"""" ΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙΙι1 Ι111111111ΙΙΙΙΙΙ 11 ΙΙ 1111Ι 11111 " /////"""
1-2 .
Ty p e
W3 common mo de rejection
ratio
g r a ph .
It pertai n s to
1 m V /Div t hro ug h 20 mV/Dίν d eflection factors .
NOTES
Typ e 7Α13
S ECTIO N 2
O PERATI N G I NST RU CTIO NS
C h ange information, if
rear of t h e man u al .
T h is
any,
affecting t h is section will be fo u n d at t h e
twelve settings above . Α minim u m
of 2 .5 times t h e VO LTS/DI V switc h
setting is p rovid e d . T h e UN CA L
lam p lig h ts w h en t h e VA R IA BLE
cont rol is o u t of t h e CA L decent.
I N T R OD U CTIO N
section o pens wit h α b r ief f un ctio n al desc r i p tion of
p anel controls a n d connecto r s (see F ig . 2-1) . F ollowi n g th e f ront- panel desc r i p tion is α famila r ization p roce d ur e and fi n ally α gene r al disc u ssion of t h e o p e r ation of
t h e Ty p e 7Α 13 .
t he f ront
Selects α Vc Range 10 Χ t h at
wh ic h is indicated on th e V O LTS/
FRONT-PANEL
-P A NEL D E SC R I PTIO N
Switc h . Th is only occ urs for
10, 20, and 50 m V /DI V an d .1, .2
Rιn - φ
settings
an d .5 V/DI V
of t h e
1-50
mV
Ill u mi n ates w h e n switc h S10, loVO LTS/DI V switc h .
VA R IN ONL Y
cated on left side of p l u g-i n , is
L am p
t urn e d cw . T h is indicates α + IN-I NPU T Co nn ector
Same as fo r -}- I NPU T connector
PU T a nd -I NPU T im p e d a n ce of
above .
approximately infinity w h eneve r
t h e VO LTS/DI V switc h is set be-I NPU T Mode Switc h
Selects
AC, DC, G N D o r V c Mode
tween 1 a n d 50 m V, VA R IA BLE
of co u p li n g for t h e -I NPU T c han
k nob is p u s h ed in a nd 1 Χ p r obe
nel .
i s u se d .
ST EP ΑΤΤΕΝ BA L
Ad ju sts for no vertical trace moveNOTE
Ad ju stme n t
ment as t he VO L TS/DI V switc h
setti
ng is varied f r om 10 to 50
W it h VO L TS/DI V switc h set f r om .1 V to 5 V, lam p
m V /DIV .
remai n s on b u t in p u t im p e d ance is 1 ΜΩ an d t h e
in p u t atte nu ator is uncom p ensate d .
GAI N
Ad ju sts t h e amplifie r gai n for disCO MP A R ISO N VO L TAG E (V c) + and Pus h b u ttons
Selects polarity
voltage .
of
com parison
CO MP A R ISO N V O L TAG E (Vc) Co un te r
Reads o u t t h e voltage selected by
t h e CO MPA R ISO N VO L TAG E ( V c)
selector switc h n co nju nction wit h
F I NE, VO LTS/DI V a nd PULL V A R
for X10 Vc RA N G E controls .
CO MP A R ISO N V O LTAG E ( V c) Selector Switc h
Selects one of te n voltage ranges
f r om zero to te n volts .
i
PULL V A R FO R Χ 10 Vc
RA N G E Switc h
A d ju stment
play of fo ur d ivisio n s upon receipt
of α 4-m V signal w h en t h e VO L TS/
DI V switc h is set to 1 m V a n d t h e
VA R IABLE control is set to CA L .
Χ 10 B A L
A d ju stment
Ad ju sts for no ve rtical trace move
ment as VA R IA BLE ( V O LTS/DI V)
kn ob is p u lled ou t .
VA R BA L CO NT R O L
Ad ju sts for no ve rtical t race movement as VA R IA BLE ( V O LTS/DI V )
k nob is va r ied t hr o u g h o u t its
range .
CO MP A R ISO N V O LTSelects α com p arison voltage
Release L atc h
to wit h d raw p l u g-i n from indiAG E ( VPull
c) F I NE Control
somew h e re betwee n t h e lowe r and
cator
oscillosco p e .
u p p er limits of t h e selected ban d
above
.
Selects
BW Switc h
eit h e r th e FULL bandwidt h
+ I NPU T Co nn ector
Provi d es α mea n s of co nn ection for
sig n al meas ur ement . It also contai n s α t h ird co n tact fo r p robe atten u ation info r matio n . T h is enables pro p er reado u t of deflection
factor on C RT scree n .
Selects
+ I NPU T Mod e Switc h
AC, DC, G N D or V c Mod e
of co up li n g fo r t h e +I NPU T c hannel .
Selects
VO L TS/DI V Switc h
o n e of twelve volts pe r
d ivision cali b rated deflection factors .
VO L TS/DI
V V A R IA BLE
Selects an un cali b rated deflectio n
it
Co n t r ol
factor somew h ere betwee n t h e
o r 5 MHz .
V c OU T 0-10V J ac k
Pr ovid es α conve n ience o u tlet for
th e com p a r ison voltage .
POSITIO N Contr ol
Positions dis p lay vertically on t h e
C R T face .
Vc REF-ID EN T Pu s h b u tton
I nter n ally disco n nects bot h signals
an d a pp lies Vc to bot h n p u ts .
T
i
E ST S ET UP C H ART
h
s
ows
α
d rawing of t h e f ront pa n el cont r ols a n d
2-10
connectors . T h is c h a r t can be repro d u ce d and u sed as α test
set up reco rd for s p ecial meas u reme nts and a p p lications, o r
may be u sed as α training ai d for o p eration of t h e Ty p e
7 Α 13 .
F ig .
Ope rating Instr u ctions-Ty pe 7Α 13
Fig . 2-1 . Front
p a nel of Typ e 7Α 13 a nd location of R ; α φ switch 510.
FAMI L IA R IZATIO N PR OC E D URE
First-Time
O p eration
T h e following ste p s are inte nd e d to h el p get t h e trace on
t h e C RT screen qu ic k ly and to p r e pare th e u nit for immed iate u se . T h ese ste p s are inten d ed to ac q u aint you wit h some
of t h e basic f u nctions of th e Ty p e 7Α 13.
1 . Inse rt t h e u nit i n to th e oscillosco p e vertical p l u g-in comp a r tment .
2 . Set t h e Ty p e 7Α 13 f ront p anel controls as follows :
CO MP A R ISO N V O LTAG E
Pu s h b u tto n s cancele d
(V c) Polarity
CO
MP A R ISO N V O LTAG E
As
is
(V c) Co u nter
I NPU T Mod e
- I NPU T Mod e
VO LTS/DI
1
V
V A R IA BLE
GND
GND
V
In (CA L )
ST
As
EP ΑΤΤΕΝ BA L
is
GAI
As
N
is
As
X10 B A L
is
VA R BA L
As is
BW
5 MHz
POSITIO N
M idrange
Ζ-Ζ
3 . Turn t h e I n te n sity co n tr ol fu lly co untercloc kwise an d
t he oscillosco p e Powe r ON . Preset t h e time-base p l u g-in
triggeri n g cont rols for α .5 ms/ d iv swee p rate a n d a u tomatic
trigge r i n g .
t u rn
4 . W ait abo u t five min utes for t h e Ty p e 7Α 13 and
oscillosco p e to warm up .
the
ΝΟΤΕ
Abo u t five min u tes is s ufficient warm u p time w h en
using t h e Ty p e 7Α 13 for s h ort-term DC measu rements . For long-term DC meas u rements using t h e
lower deflection factors, allow at least one ho u r .
5 . Ad ju st t he I n tensity control for n ormal viewing of th e
trace . T h e trace s ho u l d a pp ear nea r t h e gratic u le ce n ter.
6 . U sing t h e POSITIO N cont r ol, position t h e t race two
divisions below g r atic u le cente r . Set VO LTS/DI V to 1 m V
p osition .
ΝΟΤΕ
If trace is off screen, perform
ments o u tlined below .
F ront P a n el
A d ju st-
7. Apply α 4 m V p ea k-to- pea k calibrato r signal t hro u g h α
coaxial cable to t h e -F INPU T con n ector on t h e Ty p e 7 Α 13 .
8 . F or DC co u p le d , si n gle-e n d e d o p eratio n , set t h e +
I NPUT Mod e Switc h to DC . T h e dis p lay s h o u ld be 4 divisions of sq u a re wave am p lit u d e wit h t h e bottom of t h e display at th e reference established i n ste p 6 .
O perating
NOTE
If t h e dis p lay am p lit u de is not 4
GAI N co n trol u ntil it is .
d ivisio n s,
a d ju st
9 . F or AC co u p le d , single-en d e d operation, re-position th e
d is p lay to p lace t h e bottom of t h e d is p lay at t h e gratic u le
cen te r line .
10. Set t h e + I NPU T Mod e switc h to AC a n d note t h at t h e
d is p lay s h ifts d ownwar d abo u t two d ivisions to its average
level .
11 . Disconnect t h e calib rator signal from th e + I NPU T
co nn ecto r . Set b ot h t h e + a n d - I NPU T Mod e switc h es to
G N D.
12 . Set th e V O LTS/DI V switc h to 1 m V . V ary t h e VA R IA BLE cont r ol t hro u g h o u t its range w h ile observi n g t h e C R T
trace .
13 . Ad ju st V A R B A L so t h at t h ere is no trace movement
w h ile varying t h e VA R IA BLE co n t rol .
14 . Set t h e V O LTS/DI V switch to 10 m V. Pull o u t t h e
PULL VA R FO R Χ 10 V c R A N G E kn ob w h ile o bserving t h e
C RT trace .
2. V ary t h e V A RIA BLE cont r ol th ro u g h o ut its
observing t h e C RT t race .
X10
1 . Set t h e V O LTS/DI V switc h to 10 m V . Pull o u t t h e PULL
V A R FO R X10 Vc R A N G E kn ob w h ile obse rving t h e C RT
trace .
2 . Ad ju st Χ 10 BA L so t h at th e r e is no trace moveme nt
w h ile movi n g th e k nob in and o u t .
STEP ΑΤΤΕΝ
BA L Ad ju stment
1 . Vary t h e V O LTS/DI V switc h from 20 m V to 1 m V wh ile
o b serving t h e C R T trace .
2 . Ad ju st ST EP ΑΤΤΕΝ B A L so t h at th e trace does n ot move
while va rying th e V O LTS/DI V switc h .
3 . Re p eat all bala n ce ad ju stments u ntil o p tim u m settings
a re ac h ieved .
16 . Vary th e V O L TS/DI V switc h f r om 20 m V to 1 m V wh ile
obse rving t h e C R T t race .
d ivisions below gratic u le ce nter .
19 . Pu s h
in
t h e PULL V A R FO R X10 V c R A N G E kn ob .
F ront P anel
Ad ju stments
T h ese ad ju stme n ts m u st be accomplis h ed eac h time th e
Ty pe 7 Α 13 is placed i n α diffe re n t oscilloscope, an d s h o u ld
be c h ec ked p rior to a ny critical meas u rement of waveforms .
P reset Ty p e 7Α 13 controls as follows :
COMPA
R ISO N V O L TAG E
ma
(V c)an
P ola r ity
Pu s h b u tto n s ca n cele d
Co u nter
As is
G ND
+ I NPU T Mod e
- I NPU T Mod e
GN D
V O LTS/DI
1
V
V
V A R IA BLE
In (CA L )
ST EP ΑΤΤΕΝ BA L
M id r ange o r as is
GAI
As
N
is
X10 BA L
M id r ange o r as is
VAR BAL
M id r ange o r as is
BW
5 MHz
P OSITIO N
M id r a n ge
Allow 20 min u tes Wa r m u p time .
VA R B A L Ad ju stment
1 . Set t h e V O LTS/DI V switc h to 1 m V .
w h ile
B A L Ad justment
GAI N Adju stment
18 . Re p eat ste ps 12 t hro u g h 17 until o p tim u m settings are
ac h ieve d .
r a n ge
3 . Ad ju st VA R BA L so th at t h ere is no t r ace moveme n t
while varying t h e VA R IA BLE co n trol .
15. A d ju st X10 B A L so t h at t h ere is no t race moveme n t
w h ile movi n g th e PULL V A R F O R X10 V c R A N G E kn ob
in a n d o u t .
17 . A d ju st ST EP ΑΤΤΕΝ B A L so t h at t h e t race d oes not
move w h ile varying t h e V O LTS/DI V switc h .
Instructions-Type 7A13
1 . Using t h e P OSITIO N control, position th e C RT t r ace two
2 . Set V O L TS/DI V to 1 mV positio n .
3 . Apply α 4 m V p ea k-to- pea k cali b rator signal thr o u g h α
coaxial cable to t h e + I NPU T co nn ector on t h e Ty pe 7Α 13.
4 . Set t h e + I NPU T Mode switc h to DC .
5 . A d ju st GAI N co n t rol so th at t h e d is p lay is fo ur divisio n s
of squ a re wave am p lit u de with th e bottom of th e dis p lay at
t h e refe rence establis h ed i n ste p 1 .
E xam p les of Voltage/Signal M easurements
T h e following exam p les are pr ovi de d to ill u strate some of
t h e va r io u s ways to u se t h e Type 7Α 13 . All exam p les p res u me th at t h e Ty p e 7 Α 13 front panel ad ju stme n ts h ave bee n
d e satisfactorily . T h ese exam p les ca n be dup licate d by
o p erator to serve as familia r izatio n exercises .
ΝΟΤΕ
In all t h e following exam p les t h e CO MPA R ISON
VO L TAG E ( Vc) selector switc h setting an d t h e
VO L TS/DI V switc h setting h ave been set on t h e
basis of α voltage in p u t w h ose a pp roximate val ue
is k nown (a n d is wit h in t h e maxim u m in p u t signal
range of t h e Ty p e 7Α 13) . Th e switc h settings can
be determined b y single e n d ed or differe n tial comparator met h o d s, sta rti n g wit h t h e least sensitive
V O LTS/DI V setting of 5 V.
E xam p le
1
Single-en d e d o p e ration, DC meas urement . Meas u re t h e
voltage o u t p u t of 1 .5 volt battery . (Any convenie n t DC
so ur ce can be s u bstit u te d by setting th e deflectio n facto r
of t h e Ty p e 7Α 13 accord i n gly .)
2-3
Op e rati n g Inst ru ctions-Typ e 7Α 13
Set t h e Type 7 Α 13 front p a n el co n t rols as follows :
Exam p le
CO MPA RISO N V O LTAG E
( V c) P ola rity
Single- E nded
Operation-wavefo r m measuremen t .
Meas u re the oscillosco p e Calib rato r -Ι- V olts wavefo r m a n d
E it h e r + o r -
DC level .
Co un ter
As is
λ - INPU T Mo d e
GND
-Ι- INPU T Co nn ector
Con n ecte d to b attery positive te r minal . N egative te r minal connected to gro und
l u g on front panel .
- I NPU T Mo d e
GND
VO L TS/DI V
.5 V
V A R IA BLE
In (CA L)
5 MHz
POSITIO N
M i d range
2 . Set VOLTS/ DI V Switc h to 10 m V position .
4 . Comp u te AC waveform am p lit u de u sing t he POSITION
control to establis h α refe r ence line . (4 divisions d eflectio n
times 10 mV/ DI V yields 40 mV .)
5 . Determi n e t h e DC level on w h ic h t h e waveform is ridi n g, u si n g t h e met h od s h own in eit h e r exam p le 1 or 2 . N ote
th e DC level of t h e top or bottom of t h e wavefo r m as desire d .
As
X10 B A L
is
BW
1 . Set t h e oscillosco pe Calibrator control to 40 m V .
3 . Set + I NPU T Mode switc h to AC an d set t h e time base
GAI N
As
is
As is
Ty pe 7 Α 13 control settings a re same as fo r exam p les 1 a n d
2 except fo r t h e + I NPU T connector, w h ic h s ho u ld be co n n ected to th e Calib r ato r λ- VO LTS BNC connecto r on t h e
oscillosco pe via coaxial cable.
p l u g-i n controls fo r α stable display.
As
ST EP ΑΤΤΕΝ B A L
is
VA R B A L
3
1 . U se t h e POSITIO N control to set t h e trace to DC-0 refere n ce .
2 . Place t h e + I NPU T Mode switc h to DC .
3 . Mu lti p ly t h e n u mber of divisio n s dis p layed by t h e
deflection facto r (3 d iv Χ .5 V = 1 .5 V) . T h e i n p u t voltage
am p lit u de is 1 .5 volts ±0.3 Volts .
ΝΟΤΕ
For
signals wit h α hig h AC to DC ratio, t h e AC an d
DC signal com p onents can be eval u ated sim u ltaneo u sly by using DC co u p li n g an d single-en d e d
o p eration met h od s .
6 . Disconnect t h e calib r ator signal .
N ote t h at if th e in p u t voltage we r e a pp lie d to t h e - INE xamp le 4
PU T connecto r, wit h + I NPU T Mod e switc h set to G N D and
- I NPU T Mod e switc h set to DC, t h e 3 d ivisions deflection
Diffe r ential Am p lifie r Operation . Meas ur e t h e diffe rence
between
t h e oscillosco p e Calib rato r + V olts o utpu t a n d α
wo u ld be dow n wa rd, since t h e - I NPU T ca u ses an inverted
mo d ified Calibrator + V olts o u t p u t .
presentation .
E xam p le
Ty p e 7Α 13 co n tr ol setti n gs are t h e same as exam p le 3
above with t he followi n g exce p tion : Th e - I NPU T Mo d e
switc h s h o u l d be set to DC .
2
Differential Comp arator O p e ration, DC meas urement .
Measur e t h e voltage o u t p u t of α 1 .5 volt batte ry .
Ty p e 7 Α 13 control settings a r e t he same as for Exam p le 1
above .
1 . Set th e CO MP A R ISO N VO L TAG E ( V c) Polarity switc h to
+ and set t h e co un ter to 0150.
2 . Set th e VO LTS/DI V switc h to 20 m V an d pull t h e VA R IA BLE k nob o u t.
3 . U sing t h e POSITIO N control, set t h e t race to DC ze ro
reference (gratic u le center) .
4 . Sim u lta n eou sly place t h e + I NPU T Mode switch to DC
a n d t h e - I NPU T Mode switc h to V c .
5 . U sing COMPA R ISO N V O LTAG E ( V c) contr ols,
trace to DC zero reference .
r eset
the
6 . Read t h e val u e of t h e in pu t voltage on t h e COMPA R ISO N VO L TAG E (Vc) co un ter . It s h o u l d be 1 .5 volts ±0 .3
volts .
7. Disconnect t h e battery from t he Type 7 Α 13 .
2-4
1 . Set t h e VO LTS/DI V Switc h to 20 m V position .
2 . Connect α BN C Τ a d a pter to t h e Calibrato r + Volts
o ut p u t of t h e oscillosco p e .
3 . Bu ild and co nn ect α voltage d ivi d er to th e BN C Τ as
ill u st r ate d in F ig . 2-2 .
4. Co nn ect t h e jun ctio n of th e two resistors to t h e - INPUT conn ecto r via coaxial cable .
5 . Set t h e oscillosco p e Calibrator + Volts o u t p ut to 4 V.
6 . Sim u ltaneo u sly place t he + I NPU T an d - I NPU T Mode
switc hes to G N D . U sing t h e POSITIO N co n t rol, set t h e t r ace
to DC zero refere n ce two divisio n s below t h e gratic u le ho r izontal cente rline .
7 . Sim u ltaneo u sly set both t h e + a n d - I NPU T Mod e
switc h es to DC . Ad ju st t h e time-base pl u g-in triggering controls if n ecessary to obtain α stable waveform .
g . Measu re t h e wavefo r m am p lit u de . It will be e qu al to
the differe n ce between th e two in pu t wavefo r ms . (A pp roximately 40 m V ; t h is is t he voltage drop across t h e 1 kΩ resistor.)
O p e rating Instructions-Ty pe 7Α 13
Conn ect to
+I NPU T
Co nnecto r
1 κΩ
ι
BN C Τ CONNECTO R
100 κΩ
Con nect to
Cali brator
+ V olts
Co nnect to
-I NPU T
Conn ector
F ig.
2-2 . Voltage divider fo r E xam p le 4 .
Use of Vc OUT 0-10 V Ti p J ack
10
COMPA R ISO N VO L TAG E ( V c) can be read on α voltmeter
or oscillosco p e connected to t h e V c O U T 0-10 V tip j ac k . T h e
read i n g (or wavefo r m) m u st be equ al to t h e COMPA R ISO N
V O LTAG E V c switc h a n d F I NE co n trol settings . If α h ig h impe d ance voltmeter (one w h ic h d raws little or no c u rre n t from
t h e meas ured voltage) is u sed, t h e meas ure d val u e will be
wit h i n ±0 .5% or ±5 m V (w h ic hever is greate r) of t h e V c
co u nter.
Vc = 8 .0
Vc = 7 .0
6
Th e V c O U T 0-10 o u t p u t can be u sed as α voltage so urce,
b u t t h e acc u racy a n d val u e of V c will vary i n ve rsely wit h t he
loa d i n g effect, ju st as it d oes wit h α meas ur i n g d evice connected to it. T h is is ill u strate d in F ig . 2-3 .
Vc = 4 .0
U se s h ielded leads w h e n ever connecting to t h e V c
O U T 0-10 ti p j ac k wh ile waveform observations
V c = 3 .0
are being made . Stray voltages of 10 m V or more
can be p ic k e d up by u ns h iel d ed cables connected
to t h e ti p j ac k s . T h is ind u ce d noise will affect t h e
C R T p resentation w h enever o n e of t h e I NPU T M o d e
switc h es is in th e V c position .
V c = 2 .0
νε = 1 .0
G ENERAL DISCUSSIO N
d iffe r ential
amplifier is α device
at eve r y insta nt betwee n signals ap p lie d to its two in pu t c h a nnels . T h e following - co n cl u sio n s can be d rawn from t h is d efinition w h en two sig nals a r e a pp lie d to t h e in p u t of α d iffere ntial am p lifier .
V c=6 .0
V c = 5 .0
ΝΟΤΕ
An oscillosco p e with α
Vc = 10 .0
V ε = 9 .0
If an acc u rate, low im p ed ance meas u ring d evice is u se d ,
th e val u e r ea d will be t h e val u e ap p lie d to t h e selecte d in p ut
c h a n nel, b u t it will disag ree wit h th e COMPA R ISO N V O L TAG E Vc control setting . T h e amo u nt of d iffe r e n ce will be
dete rmi n ed by t h e deg r ee of loadi n g ca u sed by t h e meas ur i n g device . Wh e n t h e loa d is removed by d isconnecting t h e
measu ri n g d evice, t h e voltage will ret ur n to t h at indicated by
th e CO MP A R ISO N VO L TAG E V c co n trol .
th at am p lifies a n d d is p lays α voltage d ifference t h at exists
(CO MP AR ISO N V OL TAG E )
Ι
50οΚ
5οΚ
L OAD RESISTAN C E
5Κ
Ι
Fi g . 2-3 . Effect of exte rnal loa d connecte d to Co mpa r ison Voltage
Vc OUT 0-10V jac k .
2-5
O p e rating
Inst ru ctions-Typ e 7Α 13
ΜΩ
ΜΩ
(+I NPUT) - (-INPU T) =-0 .05 V
App arent DC CMRR = 200 :1
(See g raph for effect on AC CM RR)
FRE Q UEN CY
Fig .
2-4 . The effect of d iffe re nce in so urce impedance upon appare n t C MRR. ( Hig h impedance so u rces .)
1 . If two sig nals are in ph ase an d of equ al am p litude ( h ereafter called commo n -mod e), t h e o u t p u t will be zero.
2 . If t h e two signals are in ph ase b u t of d ifferent am p lit u d es, t h e o u t p u t will e q u al th e am p lit ude d ifference .
3 . If t he two signals a r e o u t of ph ase an d of eq u al am p litu d e t h e o u t p u t will be th e ph asor differe n ce between t h e
two signals . (Sin u soi d al signals .)
4 . If t he two signals are o u t of ph ase an d of d ifferent am-
2-6
p lit u d e th e o u tp u t signal is α com p lex
bot h am p litud e and p h ase
Common
Mod e
d ifferences.
q u antity
d erived from
R e jection
T h e d efinitio n of t h e te r m " d ifferential am p lifie r" im p lies
α re j ection of equ al am p lit u d e, coincid en t signals . T h is im p lication is co r rect . However, th e degree of r e jection d e pen d s
p rimarily on t h e symmet ry of th e am p lifier in p u ts . T h e
O p erating Instructions
Type 7Α 13
(+I NPU T) - (-INPU T) =-0 .0005 V
Appa r ent DC C M R R = 20,000 :1
(See gra ph for effect on AC CM RR)
α
α
ξ
υ
FREQ UEN CY
F ig .
2-5 .
The effect of d iffer ence i n sou rce impedance upon ap pa re n t C MRR . ( L ow impe da n ce sources .)
amo un t of d iffere n ce signal cont r ib u te d by α p artic u lar amp lifier at α s p ecific fre q u e n cy is d oc u mented wit h α mat hematical r elatio n sh i p t h at is called t h e common-mo d e rej ection ratio (C MRR) . T h is ratio an d associated terms are
define d as follows :
Common-M o d e R e j ection R atio (CMRR) : R atio of t h e d eflection factor fo r α common-mo d e signal to t h e d eflectio n factor
for α d ifferential signal .
NOTE
Since t h e d ifferential am p lifier is p art of an oscillosco
p e, t h e o u t p u t signal u se d to calc u late t h e C MRR
CommonMod e : Refers to sig n als t h at are i d entical in bot h
is meas u re d from t h e C RT screen an d V O L TS/DI V
am p lit u d e an d time . It is also u se d to identify t h e res p ective
switc h setting . T hu s, α d ifferential am p lifier t h at
p arts of two sig n als th at are i d entical in am p lit u d e and time .
p rod u ces α .001 volt o u t p u t w h en d riven by α 10
Commo n - Mod e R e jectio n : Th e ability of α d ifferential amvolt p ea k to p ea k common-mo d e signal h as α
p lifier to re j ect commo n -mod e signals.
C MRR of 10 - .001 or 10,000 :1 .
2-7
Operating Instru ctions-Type 7ι413
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ig. 2-6 .
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Cap acitive a nd inductive reacta n ce vers u s f req u ency .
.04
O perati n g Inst ru ctions-Typ e 7Α 13
Am p litu d e an d Common- Mod e Re j ection
In t h e text w h ic h follows, t h e term "I n p u t Signal R ange"
mea n s t h e common-mo d e o pe r ating range of voltage t hro u g h
w h ic h t h e am p lifie r will p rod u ce α u sable o u t p u t . T h is s h o u l d
not be conf u sed wit h th e maxim u m (non-destructive) i n p u t
voltage, w h ic h is relate d to t h e brea kdown limits of th e amp lifie r com p o ne n ts .
(Α)
R
ight
ι
i
So urce Im p ed ance . T h e s p ecified CMRR ass u mes th at
t h e p oints being meas ur ed h ave identical so ur ce im p eda n ce .
T h e sou rce im p edance and t he am p lifier in p u t im p eda n ce
form an R C d ivi d er w h ic h d etermi n es t he p o r tion of t h e sig nal
th at a pp ears across th e am p lifier inp u t, a nd th e a p pa rent
effect on CMRR . See Fig . 2-4 an d 2-5 .
Th e u ser may d esire to co n st ru ct α similar gra p h of CMRR
vers u s fre q u e n cy for s p ecific a p p lications wh ere th e so u rce
or sig nal tra n s p o r ti n g lea d im p edances a re u nbala n ced . F ig .
2-6 is i n cl u de d for t h is p u r p ose .
Signal Transp orting Leads. Α p r i n ci pal req u ireme n t for
maxim u m CMRR is t h at t h e signals a rr ive at t h e am p lifie r 's
two in p u ts wit h no c h ange in p h ase o r amplit u d e . Slig h t
diffe rences in atten u ation factors, o r p h ase s h ift betwee n two
i npu t atte nu ato rs may red u ce th e C MRR 20% or mo re .
Atte nu ator p robes exte n d t he u sable voltage range of α
differe ntial am p lifier by red u cing th e i n p u t sig n al level below
9 ΜΩ
I
+ ΙΝΡ U Τ
Wo r st case
diffe re n ce
b etween
Prob e Α a n d
Prob e Β
1 0/ (0 .5% resistors)
2 % (1 % resistors)
10% (5% resisto rs)
CMRR
limitatio n
i n t rodu ced
b y pro b es
Ιι
com m on g r o und
( Β ) Wro n g
~_
probe sh ields
s ho u ld not b e
floating
Ι
- INPUT ν
ι
Differential
Amp lifie r
Ι
_J
circuit
u n der test
(C) Wrong
1
ι
Ι
Ι
ι
ι
Diffe rential
amplifie r
111 :1
55 :1
11 :1
2-7 . Sim p lified circuit showing t h e limitation in C MRR t h at α
diffe re n ce betwee n atte nu ato r pro bes can i n trod u ce . Differences between pro be ca pac ί tances ad d to th e effect on AC signals .
Fig .
ιΙ J
circuit
unde r test
It
Ι
Ι
ι
ι
Ι
M atc h e d
1 ΜΩ
resisto r s
Χ 10 Probe Β
9 ΜΩ
Differe ntial
Amplifier
ι
ι
F re qu ency. Since t h e common-mode o u t pu t voltage is
α factor of p h ase diffe r ences as well as gain betwee n c hann els, t h e freq u ency of t h e in p u t common-mo d e signal h as α
d irect bearing on t h e CMRR . Gene rally, as t h e fre qu ency
of th e in p u t signal i n c reases, t h e C MRR d ecreases . ( Exce ption :
wit h AC-co u p led n pu t, th e C MRR will b ecome h ig h e r as f r equ en cy is i n c r ease d f r om DC to over 100 Hz .)
INS
ΙΙ'
Ι
Factors Which Affect CMRR
χ 10 Prob e Α
probe s h ield s
tied toget her
Diffe rential
Am p lifier
Ι
_
Ι
Ι
J
circuit
unde r test
F ig .2-8 .
1
pro be sh ield s s h o u l d
not b e g ro und e d to
e qu i p me n t und er test
Co nn ecti n g α diffe re n tial amp lifie r ac ross α circuit .
t h e maxim u m common-mo d e in p u t
d u ction i n t h e a p p are n t C MRR will
com ponent val u e diffe re n ces wit h in
F ig . 2-7 ill u strates t h e c h ange in
Χ 10 p robes t h at a re with i n 1, 2,
ation val u e.
voltage . H owever, α reu s u ally occ ur beca u se of
t h e p r obes . Fo r exam p le,
C MRR (a pp a r ent) d u e to
an d 3% of t h eir attenu-
2-9
Operating Inst ru ctions-Ty pe 7Α13
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O p e rating
Instructions-Type 7A13
elect r ically co n nect t h e p robe o r sig n al lea d s h iel d s toget h er
at t h e p robe bod y o r signal so ur ce, b u t not to th e i nstr u ment
g ro u n d . See Fig . 2-8 .
Differential Am p lifier App lications
In differe n tial meas ur ements, eac h in p u t to t h e am p lifier
acts as α refere n ce for th e ot her, a n d gro und con n ectio ns are
only u sed fo r safety reaso n s . Fig . 2-9 ill u strates α ty p ical
differe n tial meas ureme nt a pp lication .
In a p p lications s u c h as exami n ing α signal s u pe r im p osed
on some DC level with DC co u pli n g, an offset voltage may be
a pp lie d to t he ot h er in p u t of t h e d ifferential amplifier to slide
t h e sig n al bac k on t h e C RT sc reen . F or exam pl e, if α d iffere n tial am p lifie r is set fo r α vertical sensitivity of 10 m V / d iv
(trace on-screen) a n d α +1 volt DC voltage is a p plie d to t h e
+ I NPU T, t h e t race will be deflected u pwa r d off sc r ee n . If
α +1 volt DC voltage is now a pp lied to t h e - I NPU T, th e
t race will ret urn on sc r ee n , or t h e' signal will sli d e bac k on
screen as α res u lt of t h e voltage (sli d e-bac k voltage) a pp lied
to t h e - I NPU T . Th e DC voltage a pp lied to - I NPU T is, in
effect,
commo n -mode W it h t h at of t h e +I NPU T ; thu s, bot h
2-9
.
rc
it
con
nectio
ns
for
t
h
techni
qu
e
d
escr
i
be
d
Fig .
Ci u
e slide-back
are r e j ecte d by t h e amplifie r .
in th e text.
In meas u reme n ts w h ere atten u ator probes m u st be u se d
beca u se of h ig h voltage levels, and at th e same time α h ig h
(above 100 :1) CMRR m u st be maintaine d , t h e Te kt r onix Ty p e
P6023 P ro b e is recomme n d ed . Th e atten u atio n factor of th is
X10 low capacitance probe is a d ju stable over α ±2 .5%
r ange .
Gr o un d Connections . Pro per gro un d i n g r ed u ces signals
generate d from gro u nd loop c ur rents .
It is usually best to
χ _γ A pp lications
Fo r Χ -Υ a pp lication s refe r to th e in d icator oscillosco p e instr u ction ma nu al .
Passive Signal Co up ling Met h ods
See Table 2-1 fo r p assive sig n al co up li n g met h ods .
O p e r ating
Instr u ctions-Ty pe
7Α 13
ΤΥΡΕ 7Α13 DI FFEREN TIA L CO MP A R ATO R
R ιΝ =
U SE
IN
1-50 mV
V ΑR ΙΝ O NLY
F I NE
CO MPARISO N
VO LTAG E ( Vc)
DΑΤΑ
2-12
F ig .
2-10 .
Test set-up chart .
S E T UP C H A R T
Ty pe 7Α13
S ECTIO N
3
CIRCUIT DESCRIPTION
C hange
information, if
rear of the manual .
any,
affecting this section will be foun d at the
Differential
I N T ROD U CTIO N
and Common M o d e Signal Clam p s
Α block d iagram d escription covering the general configuration of each circuit in the Type 7 Α 13 is included in
this section . F ollowing the block d iagram descri ption is α
detaile d descri p tion of each circuit an d t he function of specific com p onents .
Simplified d rawings are p rovided when necessary for
easier circuit u n d erstan d ing . Com p lete schematic diagrams
are inclu d e d in the Diagrams section . These shoul d be referre d to throughout the detailed circuit d escription .
The values of resistors on the schematics are in ohms unless otherwise specified . Ca p acitor values are indicate d in
the following manner u nless otherwise noted : Whole numbers
indicate the value in p F; decimal numbers indicate the value
in μ F . Example, 33 is in p F and 0 .1 is in μ F.
BLOC K
DIAG R AM D E SC R I PTIO N
(See Block Diagram
mat ί cs .)
INPU T
Pullout
preceding
sche-
Mod e Switc h es
Α signal ap p lied to either the + or - INPUT connector,
as shown by the h eavy lines on the B lock Diagram, passes
through t he INPUT Mode switches to the Input Attenuators .
T he signals can be AC coupled, DC couple d or disconnected internally . (See schematic d iagram No . 1 .)
Input Attenuators
The Input Attenuators for the + and - in p uts are i d entical and are conventional R C type attenuators. The a d justable r esistive elements facilitate matching the - an d
+ attenuators to obtain o p timum DC common-mo d e rejection an d p recise attenuation r atios .
The attenuators (Schematic Diagram No . 1) are fre q uency
compensated voltage d ivi d ers which provid e constant attenu ation at all frequencies within the ban d wi d th of the instrument . This is done while maintaining the same in p ut
time constant (20 μs) for all p ositions of the V OLTS/DIV
switch .
Input Source and
Emitter F ollowers
The In p ut Source an d E mitter Followers are d esigne d to
p resent α very h igh input impedance at the attenuator' τ
o utput . B ootstrap p ing is incor porated in t hese stages for
The Differential and Common Mod e Signal Clamps
allow the following Differential Com parator stage to operate linearly for all in put conditions . The Differential
M ode Signal Clam p limits the out p ut levels to a pp roximately
±1 volt, whereas the Common Mo d e Signal Clamp allows α
window of at least ±10 volts .
Differential Com pa rator
The Differential Com p arator operates upon the limited
out p ut of the Differential an d Common Mod e Signal Clam ps .
The amplifie d signal is then a p p lied to the Χ 1 and X10
Gain Switching Am p lifier . The gain of the Differential Comparator is a pp roximately 1 .
χ 1 an d χ 10 Gain-Switc h ing Am p lifier
T he Χ 1 and Χ 10 Gain-Switching Am p lifier r eceives the
d ifferential signals from the Differential Com p arator . Gain
switching is accom p lishe d b y the V OLTS/DIV switch t hrough
relays.
Χ 1, Χ 2 an d Χ 5 Gain-Switc h ing Amplifier
χ 1 χ 2 an d χ 5 Gain Switching Am p lifier r eceives the
differential signals from the Χ 1 a n d Χ 10 Gain-Switching
Am p lifier . Gain switching is accom p lishe d by the V OLTS/DIV
switch t hrough relays .
Driver
Am p lifier
The Driver Am p lifier receives the differential signals
from the Χ 1, Χ 2 a n d Χ 5 Gain-Switching Am p lifier. The
gain of the Driver Am p lifier is approximately 2 .5. Its out p ut
signals are a pp lie d to the Output Amplifier.
O utput Am p lifier
The Out p ut Am p lifier f urther amplifies the d ifferential signals an d then ap p lies them to the in p ut of the oscillosco p e
t hrough p ins Α 11 an d Β 11 of the interconnecting p lug .
Trigger Amplifier
each of the + an d - in p uts. Α C urrent Source is u se d to
The Trigger Amplifier r eceives α portion of the Out p ut
supply the p roper amount of current for these stages . E ach
Amplifier signal in order to provi d e + an d - internal
triggers
si d e also contains an overloa d p rotection circuit to guard
to d rive the Trigger Generator circuit in the timeagainst signals larger than approximately ±15 volts .
base p lug-in u nit .
Circ uit Description-Type 7A13
+50 V
(DCPL #1)
+25 V
(DCPL #1)
R104
+50 V
(DCPL #1)
C R110
0
R 109
C110
VR 103 η
R 103
τ C112
C113
R 113
LJ
Q115
R 115
_J D
Q718
R119
ιι
R122
ν
(
R 131 1 C131
G
Atte nuato r
Q120
S
R152
0130 Α
CR 150
C124
R 124
R 126
i
C R 134
f R143
C143
R 140
0140
R 141 ?
-50 V
(DCPL #1)
R134
0 C134
C150
A"I'
Q145
R147
-50 V
(DCPL #1)
Fig. 3-1 .
3-2
ω
C117
Ι C122
r
,
C R 101 Γ
From
R 112
-15 V
(DCPL #31
CR 102 ~7
R 117
C R112
In put Source a nd Emitter Followe r, simplified schematic diagram.
Q152
To
Differential
Comparator
Ci r c u it Descri p tion-Ty p e 7Α 13
Feedbac k L ί miter
T h e F ee d bac k Limiter is d r iven by t h e Tr igge r Am plifier
o u t p u t signals . Α p o r tion of t h ese signals is re-a pp lie d to
Χ 1 and X10 Gain-Switc h ing Amplifier to limit t h e i n coming
signal and p r event any of t h e am p lifier stages f r om sat u rating o r c u tting off .
R eado ut
Logic
Th e R ea do u t L ogic circ u it p rovi d es t h e necessa r y o u t p u t
signals for V O LTS/DI V d is p lay on t h e C R T screen . Th ese
o u t p ut signals a r e p r esent at several pins of t h e interconnecti n g p l u g . T h e t h ird co n tacts of th e - Ε- and - I NPU T connectors se n se t h e atten u ation of t h e p r obes and provi d e
p ro p er m u lti p lying factors to t he r ea d o ut ci r c u its .
Vc
Decimal L am p Driver
Th e Vc Decimal Lam p D r iver ill u minates eit h er t h e Χ 1,
X10 or X100 lam p s d e p ending on t h e atten u ation of t h e
p robe an d n ternal atten u ato r .
i
DETAI LE D
($~~ sc h ematic
υαΙ .)
CI R C U IT
d iagram
D ESC R I PTIO N
p u llo uts at rear of man-
INPU T M o d e Switch
Signals a p p lie d to th e + or - I NPU T connector can be
AC co up led, DC co u p led o r inte r nally d isconnected . Wh en
t h e I NPU T Mo d e Switc h is in th e DC position, t h e in p u t sigηαΙ is co u p le d d irectly to th e In p u t Atten u ato r . In th e AC
p osition, t he AC signal is co up led th ro u g h ca p acitor C1
w h ile t h e DC com p onent is blocke d . T h e G N D p osition internally d isconnects t h e signal from t h e 7Α 13 an d co nnects
G N D to th e In p u t Atte nu ato r. Th is p r ovides α go u nd reference for th e am p lifier with o u t re qu iring removal of t h e
in p u t p robes .
Wh e n t h e Inp ut Mode switc h is set to V c, t h e sig nal is internally d isconnecte d w h ile t h e com p arison voltage Vc is
ap p lie d to t h e gate of t h e In p u t FE T. T h is p rovi d es α DC
refere nce for o n e in p u t of th e Diffe re ntial Com p arator w h ile
th e sig n al is a pp lied to th e ot h er .
Wh en t h e V O L TS/DI V switc h is set to 1, 2 or 5 V /DI V,
t h e following occ u rs : R elays Κ6 an d Κ26 c ha n ge t h ei r states,
w h ereas Κ 7 and Κ 27 remain in t h e same state . Thus, t h e
two signals m u st now p ass t h ro u g h both atten u ato rs . T he
signals th en pass thr o u g h contacts Κ 10-1 an d Κ 30-1 as d escribed p revio u sly . T h e foregoi n g t h ree cases of VO L TS/
DI V switc h settings corres p ond to atten u ation factors of Χ 1,
Χ 10 and Χ 100. Th ese atten u ators are almost i d entical for
t h e + an d - I NPU T ch annels . T h ey are t h e conve n tional
R C ty p e atten u ators .
T he atten u ators (Sc h ematic Diagram n u mber 1) are frequ e n cy-com pensated voltage d ivid e rs w h ic h p rovi d e constant atte nu ation at all f r equ encies wit h in th e ban d widt h of
t h e inst ru ment, w h ile maintaining α co nstant in p u t time constant (20,μs) for all p ositio n s of t h e V O L TS/DI V switc h .
E ac h atten u ator contains an a d ju stable ca p acito r to p rovi d e correct atten u ation at h ig h frequencies a n d ad ju stable
s hun t ca pacitance to p rovid e correct in p u t ca pacitance .
In p u t So u rce an d E mitter Followers
T h e In pu t So urce an d E mitter Followers p rovide α very
h ig h npu t im p edance so t h at t h ey do n ot load dow n th e
atte nu ator circ u it elements . T h ese stages are identical fo r
bot h c h a n nels . T h e r efore, t h e followi n g d escri ptio n of t h e
-Ε- NPU T c h annel d escribes t h e - I NPU T also .
i
I
The + I NPU T So urce a n d E mitter F ollowers incl ude Q120,
Q130A, Q140, Q145, Q118, Q115, Q110 and Q105 a nd t h ei r
associated compo n e n ts . Q120 a n d Q130A a re t h e So ur ce and
Emitter Followers . Q140 and Q145 form α C u rrent So u rce of
a pp roximately 18 mA . Q118 is α bootstra pp ing emitter followe r . Q115 a n d Q110 form overdrive p r otection circ u it
along wit h diod es C R 101, C R l02, C R 110 and C R 112 . Ql05
is α c urr e nt so u rce .
T h e in p u t sig n al a ppea r ing at th e emitter of Q130A is
very close to th at w h ic h a pp ea r s at t h e gate of Q120 . T h at
is, t h e in pu t stage h as α voltage gain very close to u nity .
T h e bootstra pp ing an d active long tail h el p to ac h ieve t h is
efficiency .
T h e In p u t So u rce an d E mitter Follower p r ovi d es an extremely h ig h in p u t im p edance an d α low o u t p u t im p e d ance .
T h e sig n al from t h e atten u ato r is a pp lied to t h e gate of FET
Q120, w h ic h o p e rates α so urce follower. Th e so u rce of
Q120 is connecte d to emitte r follower Q130 w h ic h d rives
t h e voltage am p lifier th ro ug h t h e d isconnect circ u itry . Q120
Inpu t Atten u ators
so u rce an d Q130 emitte r are co u p le d t h ro u g h R 124 an d
T h e In pu t Atten u ators wor k in con ju nction wit h t h e V O LTS/
The
R 134 res p ectively, to c u rrent so u rce Q145 and Q140 .
DI V switc h S50 . Wh e n t h e V O LTS/DI V switc h is set to t h e
o u t put of Q130 is also a pp lie d to t h e base of emitte r fol1, 2, 5, 10, 20 o r 50 m V /DI V p osition, r elays Κ6 and Κ26 are
lowe r Q118 . T h e resistive tails of Q118, Q120, a n d Q130
d e-ene r gize d , an d Κ7 and Κ27 are e n ergized . T h e relays
all connect to th e collector of t h e c u rrent so urce Q145. T h e
a re connecte d so t h e signals p resent at t h e in p u ts by-pass
r esistive tails effectively p arallel to d r ive t h e collector cabot h atten u ato r s . (Th e above d escription a pp lies only w h en
p acitance of Q145, so t h at t h e voltage differences ac r oss
t h e V A R IA BLE VO L TS/DI V is d e p resse d .) Wh en t h e I NPU T
R 124 a n d R 134 are q u ite small . T h is res u lts in α very small
M ode switc h es are n ot set to t he V c p osition, t h e signals
signal c u rrent th ro u g h R 124 and R 134, ma k ing t h eir im p e d p ass t hr o u g h contacts Κ 10-1 an d Κ30-1 to t h e + an d
above
ance
to t h e signal ve r y h ig h . R 126 h as negligible effect on
- I n p u t So u rce and E mitte r F ollowers.
t h e bootst ra pp e d voltage si n ce its im p edance is m u c h less
t han th e o u t p u t im p ed ance of t h e co n stant c u rrent sou rce .
Wh en t h e V O LTS/DI V switc h is set ο 0.1, 0.2 o r 0 .5 V /
Q115 is an emitter follower w h ic h co u p les t h e signal
DI V p osition, t h e followi n g occ ur s : Relays Κ6 an d Κ26 refrom t h e emitter of Q118 to t h e d rain of Q120 and t h e colmain in t he same state ; h owever, relays Κ7 an d Κ 27 c h ange
lector of Q130. T h is allows t h e d rain and collector to folth eir states, t h ereby ca u sing t h e two signals above to p ass
low t h e i n p u t an d maintain approximately constant q u iest h ro u g h t h e secon d atten u ators . T he signals t h en p ass
cent conditio n s wit h la r ge am p lit u de in p u t sig n als . T h is
Κ
10-1
an
d
Κ30-1
as
described
ea
r
lier
.
t hro ug h contacts
3-3
Circuit Desc r i p tion-Typ e
7A13
p r ocess, called bootst r a p ping, res u lts i n mi n imal transistor
p a rameter c h anges and greatly red u ced Miller ca p acita n ce .
ed, t hu s loc k i n g th e anode e nd of VR 103 to a pp roximately
t h e same potential as t h e in p u t signal . If the in put signal
b ecomes a p p roximately e qu al to o r more negative t h a n
abo u t -21 volts, zener d iod e VR 103 begi n s to cond u ct,
loc k ing th e base of Q110 a n d t h e base of Q105 to α level
abo u t 48 volts above t h e i nput signal . As t h e i npu t signal
goes mo re n egative, Q110 goes o u t of sat u ration and is
t u rned off . T h is d isconnects t h e in p u t am p lifier from t h e
+25V s u pp ly . Disconnect d io d e C R 150 d iscon n ects t h e i n
p u t am p lifier from s u cceedi n g stages .
Q105, Q140 a nd Q145 form c urr e n t so u sces fo r t h e in p u t
amplifie r.
Differential
C124 an d C134 are common mode a d ju stments w h ich a r e
a d ju sted for pro p er p h ase matc h ing betwee n t h e two
am p lifie rs .
T h e disco n nect circ u it consists of C R 150 an d Q152, wit h
R 152 o pe r ati n g as α constant c u r rent so u rce of .5 mA to t h e
base of Q152 . Th e clamp circ u it consists of VR 155, C R 158,
C R 156, VR 157, C R 152 a n d C R 154, C R252 a n d C R254 . Wh en
t h e in p u t signal to th e 7Α13 is between abo u t +12 V an d
-12V, C R 150 is forwa r d biased an d Q152 is satur ated .
T h e base of Q152 is fe d by α c u rrent so u rce so th at t h e
base voltage, an d h ence th e emitter voltage, can follow t h e
collector voltage . C R 152, C R 154, C R 252, C R 254 serve as
clam p d iod es, clam p ing at α level determined by th e zener
d iodes VR 155 a n d VR 157 .
T h e R 113-C113 time constant com pe n sates for an effective
RL time constant introd u ced by Q118 . R 112 an d C112 p rovide h ig h freq uency com p e n satio n for bootstra p to 0115 .
C110 se r ves as α deco u pling ca p acito r fo r Q118. C117 is
for h ig h f r eq u ency com p e n satio n . R 131 a n d C131 p rovi d e
th ermal compe nsation fo r Q130; R 131 sets DC q u iescent
co n d itions of Q130 ; R 112 sets t h e DC q uiescent p oint of Q120
a n d Q130. R 122 an d C122 p r ovide h ig h fre qu ency com p e nsatio n to t h e bootstra p sig n al to Q120 a n d Q130 from Q115 .
Th e p rotection ci r c u it co n sists of Q110, C R 112, C R 110, VR
103, C R 102, C R 134 and C R 101 . Wit h in pu ts less th an ±15 V,
Q110 is satur ate d , fo rward biasi n g C R110, t hu s esse ntially
connecti n g th e +25V to t h e in p u t am p lifier . Q105 is o pe r ating as α constant c urrent so u rce for biasing Q115, a nd
C R 112 is con d u cti ng . C ur rent is ret u rne d to t h e p ower supply t h ro u g h fo r wa rd biase d C R 134 a n d t h e constant c u rrent
so u rce Q145 . 47 V zene r d iode VR 103 is in α non-conducting state wit h an a n o d e-cat h od e voltage of a p p roximately
-41 volts DC . C R 102 a n d C R 101 are reverse biased, a n d
t hu s non-conducting . C R 101 is α very low lea kage (less t h a n
10 ρΑ ) low ca p acity (less t ha n 1 p F ) d io d e, in o r d e r to minimize i n p u t loading .
If α p ositive signal is a pp lied to t h e inp ut, th e c urre n t
t h ro u g h t h e Q120 FET i n creases, thus inc reasi n g t h e so u rce
voltage, allowi n g it to follow t h e i npu t . T h e Q120 F ΕΤ c urre n t is u ltimately limited by t h e co n sta n t c ur rent so urce
Q145 s u c h t h at w h e n t h e in p u t exceeds abo u t +15 volts,
Q120 FET d rain c ur re n t ceases to increase, and th e Q120
FE T gate-so u rce ju nctio n forward biases . If t he in p u t co n tin u es to go mo r e p ositive, t he FET so urce voltage follows
th e in p ut sig n al, w h ic h is now s up plying c u rrent to t h e in p u t
am p lifie r, satur ating 0130, Q118, an d Q115 .
Clam p s
Signal an d Common
Mo de
Signal
T h e voltages at t h e ju nction of VR 155 a n d C R 156, and at
t h e ju nction of VR 157 a n d C R 158, a r e consta n t at a bou t
+12 V a n d -12 V, r es pectively. Whe n t h e base voltage of
Q152 exceeds +13 .5 volts, C R 152 a n d C R 156 become forwar d b iase d , clam p ing t he base voltage of Q152 at t h is
level . Similarly, t h e bases of Q152 a n d Q252 a r e clam p ed
for n egative signals by fo r wa r d biasing C R 154, C R252 an d
C R 158 . If t h e i n p ut signal is in excess of +12 .1 volts, t h e
b ase of Q152 becomes clam p ed and no longer follows t h e
collector voltage . T h e collector voltage can follow t he inpu t up to th e V ce b rea k down level . If t h e i nput signal is in
excess of -12 .8 volts, t h e base of Q152 becomes clampe d
(at -12 .1) a n d C R 150 b ecomes reve rse biased, disco nnecti n g t h e com p arato r from t h e inp u t am p lifier .
Differential Com pa r ator
If t h e voltage of th e signal exceeds abo u t +25 volts, th e
voltage at th e base of 0115 a p p roximately eq u als o r exThe Diffe r ential Com p arator incl u d es Q160A and Β ,
ce d s t h e voltage at t h e collector of Q105, t hu s reverse
Q170, Q270, Q255, Q258 an d Q165 . Q160A an d Β act u ally
biasi n g C R 12 and esse n tially d isconnecting Q115 base
form t he com p arato r , w h ic h h as α Consta nt C u rrent So ur ce
from t h e consta n t c u r r ent so ur ce Q105 . Similarly, w h en t h e
fo rme d by Q255 an d Q258 s u pp lying 25 mA . B ootstrapcollector voltage of sat u rate d Q118 a p pr oximately eq u als
ping is accom p lis h ed by Q165 . Th e cascade connection s
o r excee d s t h e emitte r voltage of Q110, C R 10 is reve r se
are ma d e to 0170 an d Q270 .
biased , t hu s d iscon necting Q118 f r om t h e +25V s u pp ly.
T h is actio n t h en allows t h e i n p ut am p lifie r to float with t h e
T h e gain of t h e Diffe r ential Com parator is approximatei n p u t signal at a pp roximately t h e same potential thr o u g hΙγ one . Ca pacitors C162, C262, C171 an d C271 a r e ad ju stt, isolated fr om t h e + powe r s up p lied by C R 112 and C R
o uable
fo r good h ig h freq u ency common mod e re j ection
110 . Q145 h as s u fficient p ower, c ur re nt a n d voltage s p ecir atio (C MRR) . C163 is a d ju sta b le for goo d transient (ste p )
ficatio n s to han d le sig n als of a p p roximately +50 volts inres p onse . Diod e VR 166 is u se d as α DC level raising diode .
p ut. Disconnect tra n sistor Q152 d isco nn ects t h e in p u t am p liR 167 is α t h e r mal com pensati n g p ote ntiometer .
fie r from t h e s u ccee d i n g stages .
If α negative signal is applie d to th e in p u t, t h e jun ction
of R 124, R 126, R 134, an d C R 134 follows . Wh en th e voltage
at t h is point is a p p roximately e qu al to or mo re negative
t h an th e voltage at t h e collector Q145, C R134 becomes r everse biased a nd thu s disco nn ects th e in pu t am plifier f r om
th e su pp ly r et urn . If t h e signal becomes more negative t h a n
abo u t -15 volts, C R 101 an d C R 102 become fo rwa r d bias3-4
X1-X10 Gain-Switching Am p lifier
T h e X1-X10 Gai n Switc h ing Am p lifier co n sists of Q185A
an d Β , Q195A an d Β and associate d com p onents . Wh e n
t h e V O LTS/DI V switc h is not in t h e 1, 2 or 5 V /DI V p osition
a n d t h e V A R kn ob is pu lled o u t, X10 GAI N r elays are set
fo r an atte nu ation facto r of 10 . T h at is, t h e relay contacts
Ci r c uit Description-Type 7Α 13
are i n t h e labele d (on sc h ematic No . 2) Χ 10 positions . T h is
dive rts 90% of t h e signal c u rre nt t h ro u g h R 194, th e re b y red u cing t h e ove r all gain by 10 Χ . R 288 p rovides an i n ternal
DC balance cont rol . R 284 is th e front p anel X10 BA L a dju stment. C187 an d R 187 a re transient r es ponse a d ju stments .
Xl-X2-X5 Gain-Switching Amplifier
T h e Χ l-X2-X5 Gai n Switc h ing Am p lifier is com p ose d of
Q300A and Β , Q320A and Β and t h ei r associated com ponents . T h e am p lifier o perates in α manner similar to t he
X1-X10 Gai n -Switc h i n g Am p lifie r . H oweve r, t h e r e is o n e a d d itio n al com p onent; α th e r mistor-varactor d iode th ermal
networ k across t h e emitte rs of 0300 Α a n d Β . T h is is α tra n sient response "fixer" for tem pe rat u re va r iations of t he
many transistor p a r amete rs . In effect, t h e ca p acitance of
t h e varactor diode C R401 varies in acco rdance wit h t h e
t hermistor-resistor b ias netwo rk R300 an d R 303. This s p i k es
up or rolls off th e front corner of t h e ste p res p o nse waveform as tem p e rat u re is c h ange d . Th e net res u lt is α good
s qu are-co r ne r e d ste p res p onse .
C319 and
Driver
R 319
p rovide h ig h fre q u ency com p ensation .
Amplifier
T h e D r iver Am p lifie r is α ΡΝΡ cascad e ci r c u it incl u di n g
Q330, Q430, Q340 an d Q440 a n d associate d com p o n ents .
Th e f r ont p anel P OSITIO N cont rol is con n ected to t h e emitte r of Q430 an d t h e p osition ce n ter a d ju stment to t h e emitte r of Q330. R esistor R439 and capacitor C439 are for h ig h
f re qu ency com p e n satio n . A d ju stable com p o n ents C432 an d
R432 also im p rove th e t r ansient r es p o n se of t h e am p lifier .
T h e am p lifier h as α voltage gain of a pp roximately 2 .7.
Output
Am plifier
T h e O u t p u t Am p lifie r is an ΝΡΝ casca d e am p lifier with
α voltage gain of a pp roximately 2 .7. It i n cl u des Q350,
Q450, Q360 an d Q460 an d associated com p onents . R esisto r R456 an d ca p acitor C456 are for h ig h f req u ency comp ensation . P ote ntiometer R 360 is α Signal DC Level a d ju stment fo r t h e collectors of Q360 an d Q460. Dio d es C R 364
an d C R365 limit t h e o u t put sig n al swi n g to ±0 .6 volts .
C364, C464, L364, and L464 form α 3 pole 5 MHz low pass
filter w h e n ever t h e BW switch is set to 5 MHz via relay
K490-1 and -2 .
Trigger Am p lifier
of t he O u tpu t Am p lifier board a n d Al and AK of t he I npu t
Am p lifier board .
Feedbac k
Limiter
Th e Feedbac k L imiter i n cl ud es Q180, Q280, Q182 an d
Q282 a n d associate d com p onents . Th is ci r c u it p revents all
t h e am p lifiers wit h i n t h e feedbac k loop f r om bei n g d riven
to sat u ratio n or c u toff. Th is is necessa ry to p rod u ce good
" recove r y time" in t h e 7Α 13 . (See Sectio n 1, Specification) .
Transistors Q180, Q182, Q280 and Q282 are n ormally
Th e fee d bac k voltages f r om Q380 and Q480
of th e Trigge r Am p lifier are a pp roximately ze ro un less t h e
signal swings inc rease t h e voltage to p l u s an d min u s 0.6
volt . As t h e sig n al swings beyond th is exc ursio n , transisto rs
Q180, Q182, Q280 a nd Q282 start to con d u ct. T h is effectively s h o r ts t h e base of 0185 Α to th e base of Q185 B wh ich
res u lts in r e d u ci n g t h e signal swing th at sta rte d th e cycle .
In t h is manner, t h e F ee d bac k L imiter controls t h e signal swi n g
of th e O u t p u t Am p lifie r .
b iased off.
Read o u t L ogic and
Vc
Decimal L am p Drive r
T he R ea d o u t L ogic a n d Vc Decimal L am p Logic o p erate
upon t h e p robe atten u ation i n formation f r om t h e t h i r d co n tacts of th e + a nd - I NPUT j ac ks . T h e Rea d o u t L ogic circ u it consists of Q40, C R40 t h ro u g h C R43 and associated
com ponents . T h ree wafe rs of th e V O LTS/DI V switch are
em p loyed to transmit atten u ation informatio n to t h e indicator
oscillosco p e . T h e total info r mation is sent o u t via p i ns Α30
(m), Α 32 (X 1, Χ 2 and Χ 5), Α 37 (col u mn), Β32 (UN CA L), Β29
( V O LTS), Β37 (R O W) an d Β 33 (X1, X10 an d X100) of th e
o ut pu t board . T h e V c Decimal L am p D r ive r i ncl u des Q60,
Q65, Q70 an d Q75 an d associate d com p onents. Th e purpose of t h is ci r c u it ry is to lig h t an a pp rop riate Χ 1, Χ 10 o r
X100 lam p . T h e in pu t signal comes from t he d io d e p air
C R 40 an d C R 43 of th e Rea d o u t Logic board .
L ow Voltage P ower S u pp lies
Th e L ow V oltage Power S up p lies o p erate upon r eceipt
of +50 V DC, + 15 V DC, -15 V DC an d -50 V DC to
p ro d u ce th e following voltages : +50V DC, +25V DC,
+14 V DC, +8 V DC, +5 V DC, -8 V DC, -15 V DC and
-50 V DC . T h ese voltages are f u rt h er divi d ed into several
deco u p le d s u pp lies . F or exam p le, +15V DC is clecoupled
five times, once for eac h loa d . Similarly th e ot h e r DC s u p plies a re d eco u p led f r om t h eir loa d s .
Comparison V oltage Generator
Trigger Am p lifie r consists of Q370, Q470, Q380,
Th e Com p a r iso n V oltage Gene rator operates upon reQ480 a nd associate d com p onents . Resistor R 374 and cacei p t of + or -50V DC d e p ending on t h e Vc p ola r ity
p acitor C374 p rovide h ig h freq u e n cy com p e n sation . C372,
switc
h es . Zene r d io d e VR 570 is u se d as an 11 .7 volt refe r R477
and C477 are also a dd e d for t h at reason . Resisto r
ence. A pp roximately 10 mA are s u pp lied t h ro u g h R572 to
R371 is th e trigger DC balance a d ju stment. Resistor R 380 is
p rese n t to a d ju st t h e o u t p u t trigger DC level at t h e collect h e zener d iode VR 570 . P otentiometer R575 and R 576 set
t h e o n e volt reference b etween t h e two p oles of switc h
tors of Q380 an d Q480 . T h e o u t p u t t r igge rs are a p p lie d to
t h e indicator oscillosco p e by p ins Α13 an d Β 13 . Th ey are
S W575 . P otentiometer R 577 is t h e va riable CO MP A R ISO N
also a pp lied to th e Fee d bac k L imiter via p ins AN an d AV
V O LTAG E ( Vc) F I NE control .
Th e
NOTES
SE CTIO N
Typ e 7Α 13
4
MAINTENANCE
C h ange
information, if
rear of t h e man u al .
any,
affecting t h is section will be fo u n d at t h e
I nfo r matio n wh ic h will ai d in k ee pi n g t he Ty p e 7Α 13 opp ro p erly seated t ra nsistors an d h eat-damage d pa r ts . T h e
erati n g at its p ea k p e r fo r ma n ce is contai n ed in t h is section .
remedy for most visi b le d efects is obvio u s . But, d amage f r om
Cleaning,
over
l u bricating and vis u al ins p ection h ints are i n cl ud e d
h eating is u s u ally α sym p tom of less obviou s t r o u ble;
T h e sectio n on corrective
a nd un less th e ca u se is d etermined befo r e parts a r e replaced ,
u n d er p r eve n tive maintenance .
t h e d amage may be re p eated .
maintenance i n cl u d es t ro u bles h ooti n g and cor rection p roce d u res . Pa rts i d entification and sol d ering tec h ni q u es are
incl u ded wh ere necessary .
Transistor C h ec ks
PREVEN TI VE MAI N T EN A N C E
General
T h e instr u me n t s h o u l d be cleaned , l u b r icate d , inspected
a nd recalibrated at reg u lar inte r vals . Α recomme nded sc h ed u le for average o p e rati n g conditions is every 6 mo n t h s or
eve ry 1000 ho u rs of o p e ration, w h ic h ever occ urs first.
Cleaning t he F ront Panel
Loose d u st may be removed wit h clot h and α dry paint
br u s h . Water an d mil d d etergents s u c h as Kelite o r Sp rayWh ite may be u sed .
CA U TIO N
Avoi d t h e u se of c h emical agents w h ic h mig h t damage t h e p lastics u se d in t h is u nit . Avoi d c h emicals
s u c h as benze n e, tol u ene, xyle n e, acetone or similar solvents .
Cleaning t h e Interior
Clea n ing of t h e i n terior of th e un it s ho u l d p recede calibratio n , since t h e cleaning p rocess co u l d alter t h e setting
of t h e calib ratio n a d ju stments .
To clean t h e interior, u se low-velocity com p ressed air to
blow off th e acc u m u lated d u st . V e ry h ig h velocity air st reams
s ho u l d be avoided to prevent damage to com p one n ts .
WA RN I N G
Use an eye-s h iel d w h en cleani n g wit h press u rized
air .
Hardene d d irt can be r emove d with α p aint br us h , cotton
ti pped swab or cloth dam p e n ed wit h wate r and mild detergent sol u tio n Avoid t h e u se of t h e followi n g ch emical cleaning age n ts th at mig h t damage th e p lastic parts, es p ecially
t h e Atten u ato r etc h ed circ u it boa rd : Acetone, tric h loroet h yle n e, c h lo r oeth a n e, and met h yl et h yl k eto n e .
Visual
Inspection
T h e u nit s h o u l d be inspected occasio n ally for s u c h d efects
as poor co n nections, bro k en o r damage d ci rc u it boar d s, im-
p reventive maintenance c h ec k s on th e t ra n sisto rs
i n t h e u nit a r e not r ecommen d ed . T h e circ u its wit h i n t h e
u nit generally provi de t h e most satisfacto r y means of c hec king t ransistor u sability . Perfo r ma n ce of t h e circ u its is t h oro u g h ly c h ec k ed d ur i n g recalibration, and substandard tra n sistors will u s u ally be detected at t h at time .
P erio d ic
used
Calibration
To ins u re acc urate meas u rements, t he Type 7Α 13 calibration sh o u ld be c h ec k e d afte r eac h 1000 h o urs of o pe ratio n
or eve ry six mo n t h s if u sed inte r mitte n tly. Complete calibration inst ru ctions are contained in Sectio n 5 .
T h e cali bration p r oced u re can be h el p f u l in isolating ma j or
tro u bles i n t h e u nit. Mo reover, minor t ro u bles not apparent
d uri n g reg u lar o pe r atio n may be r evealed a n d corrected
d uring calibration .
CO RRE CTI VE MAI N T EN A N C E
General
R eplacement of some p arts in t h e un it s ho u l d be d one by
followi n g α d efinite p r oced u re. Some p roced u res, s u c h as
sol d eri n g a n d re p laci n g com p o n ents on t h e circ u it board , are
o u tli n ed n t h is p ortion of t h e ma nu al .
i
Many elect r ical com p one n ts are mo u nted i n α pa rtic u lar
way to re d u ce or control st ray ca p acitance a nd ind u cta n ce .
Wh en selecti n g re p lacement pa rts, it is im p ortant to remember t h at t h e p h ysical size and s h a pe of α com p onent may
affect its p erfo r mance at h ig h fre q u e n cies . Wh en α re p ai r
is made, calib r atio n and p erfo rmance of t h e r elevant p o rtions of t h e circ u it s h o u l d be c h ec k ed . Refe r to Table 4-1
a n d to th e Pe r formance C h ec k /Calib ratio n p r oced u re in
Sectio n 5 and perfo r m t h e a pp licable ste p s .
Obtaining
R e p lacement Parts
Stan d a r d Parts . All electrical and mec h anical p a r t re
p laceme n ts for t h e Ty pe 7 Α 13 can be obtai n ed t h ro u g h yo u r
local Te k t r o n ix F ield Office or re p resentative . H owever, many
of t he standard elect r o n ic com p onents can be obtained
locally in less time t h an is req u ire d to ord e r t h em from Tek-
Maintenance
Type 7Α 13
TA BLE 4-1
RE CA L I BRATIO N A F T ER REP AI R
C h ec k s & Ad ju stments
Affected
Areas of R e p air
Input
Ι
Section 5 Calibration
Ste p
In p u t R and C, atten u ator comSte p s 12 t hro u g h 16 .
p e n sation, C MRR low-frequency Ι
Steps 18, 19, 21, 22 .
In p u t Atten uators
res p o n se
DC
I npu t Am p lifie r
a d ju stments, gai n CMRR, Ste p s 1 t hro u g h 9.
Ste
h ig h-freq u e n cy com p ensation
p s 11, 17, 20, 25, 32, 33 .
O u t p u t Am p lifier
DC ad ju stments, gain, C MRR, Ste p s 1 t h ro u g h 9 .
h ig h -fre q u e n cy com pensatio n
Ste
p s 17, 20, 25, 26, 32, 33 .
Gain,
Trigger Am p lifie r
h ig h -freq u e n cy res p onse Ste p s 17 a nd 20 .
Ste p s 23 t hr o u g h 24 .
Com p a r ison Voltage
Com pa r ison voltage
Ste p s 27 t h ro u g h 31 .
M ode Switc h es
tronix, Inc . B efore purc h asi n g o r o rd ering re p laceme n t p a r ts,
c h ec k t h e p arts list fo r val u e, tolerance, rati n g and d escri ption .
ΝΟΤΕ
Wh en selecting re p lacement p arts, it is im p ortant
to remember t h at t h e p h ysical size and s h a p e of
t h e com p o n e n t may affect its p erformance in t h e
instr u me n t, p artic u larly at h ig h fre q u e n cies . All rep lacement p arts s h o u l d be direct re p lacements unless it is kn own t h at α d ifferent com ponent will not
adver sely affect instr u ment p erformance .
All Circu it Boa rd s . T he following tec h niq u e s h o u l d be
to re p lace α com ponent on α circ u it boa rd . Many of
t he com p o n e n ts can be re p laced wit h ou t r emovi n g t h e board
from t h e un it .
u sed
1 . Grip t h e com p onent lea d wit h long- n ose p liers . To u c h
t h e sol de ring iron to t h e lea d at t h e solder connection . Do
n ot to u c h th e sol d eri n g i ron ti p di rectly on t h e boa rd , as it
may damage t h e board .
ΝΟΤΕ
(Alternate p roce d u res for ste p s 1 and 2 )
If t h e boar d h as been remove d so t h at t h e sol d ering iro n can be a pp lie d to t h e b ac k si d e of t h e
board, α sol d er-removi n g d evice is extremely u sef u l
for removing sol d er f r om t h e co nn ection to ex p e d ite
com p o n ent removal .
S pecial Parts
Some parts a r e man u fact u red or selected by Te k t ronix to
satisfy p a rtic u la r req u i rements, or a r e ma nu fact ur e d fo r Te ktro n ix to o ur s pecificatio ns . T h ese a n d most mec h a n ical parts
s h o u ld be o rd ered th ro u g h yo ur Te k t r o n ix Fiel d E nginee r or
Field Office . See Parts Ord e ri n g I nformation an d S p ecial
Notes and Symbols on t h e p age imme d iately p recedi n g
Section 6 .
Sol dering Tec h niq u es
Atten u ator B oar d . T he Atten u ato r circ u it b oar d is mad e
from p oly p henyle n e oxid e beca u se of its excelle n t electrical
c h aracteristics . U se mo r e t h an o r d i n ary care w h e n sol d eri n g .
T h e following ru les s h o u l d be o b se r ved w h en removing or
re p lacing p arts on t h is board :
2. Wh e n t h e sol d er begins to melt, pull t h e lead o u t gently. T h is s h ou ld leave α clean h ole i n t h e b oard . If not, t h e
h ole ca n be clea n ed by re h eating t h e sol d er a nd p laci n g α
s h ar p ob j ect, s u c h as α tooth p ic k or pointed tool, i n to t h e
h ole to clean it o u t. Anot h er met h od for clea n ing t h e h ole
is to u se α solder-removi n g d evice .
3. B e n d t h e leads of t h e
n ew
com po n ent to fit t h e holes i n
n ew com p one n t to t h e same
lengt h as t hose of th e ol d com p o n ent. I n se rt t h e lead s i n to
t h e board un til t h e com ponent is firmly seate d against t h e
t h e board . C u t t h e leads of t h e
1 . Do not apply any mec h anical st r ess to t he board .
2. Use α ve ry small soldering iro n (not over 15 watts) .
3. Use low-temperature sold e r .
4 . Do n ot apply mo r e h eat, o r apply
time, t h a n is absol u tely necessary .
h eat
for α lo n ge r
5. Use some form of solder removing d evice (desoldering
tool) es pecially w h en r emoving m u lti-lea d d evices .
In p ut and O u t put B oard s . Use ord inary 60/40 sol d e r
and α 15 to 30 watt p encil ty pe sol d ering iro n on t h e circ u it
board s. Th e ti p of th e i ron s h o u l d be clea n an d p ro p er ly
tinned for best h eat t ra n sfe r to t h e sol d e r j oint . Α h ig h er
wattage solde r i n g i ron may sepa rate t h e etc h ed wi r ing from
t h e base mate r ial .
4-2
F ig .
4-1 .
Using n eed le-noise p lie rs
as α
h eat
sink .
M aintenance-Ty p e 7Α 13
ε
6
ο
Ο
P lastic Case T ran sistors
D
G
Ι" \.
Case
Vol
5
__~1
I
1141RE
n dex
Dot
FE T
Metal Case T r a n sisto r s
Fig . 4-2 . Tra n sistor p in identification .
board , or as positioned originally . If it d oes not seat p ro p erΙγ , h eat t h e j oi n t, and ge n tly p ress t h e com pon e n t into p lace .
4 . Apply t h e iron an d α small amo u nt of sol d e r to t h e co n nectio n to ma ke α firm sol d er joint . To p rotect h eat-sensitive
com p o n ents, h ol d t h e lea d between t he com p onent bo d y an d
t h e sol d er j oint wit h α p air of long-nose p liers or oth er h eat
si nk , see F ig . 4-1 .
5 . Cli p th e excess lead t h at p rotr u d es t h ro u g h
the
b oa rd .
6 . Clean t h e a rea aro u nd t h e soldere d connection wit h
fl ux-remove r solvent to mai n tain goo d environme ntal c h aracteristics a n d a p pearance . B e ca r ef u l not to remove i n fo r mation printe d on th e boa r d .
CA U TIO N
Sil k screen lettering d issolves w h en contacte d by
fl u x-remover .
Metal Te r minals . Wh en soldering to metal te r mi nals (i n ter
co nn ecting p l u g p ins, switc h terminals, p otentiomete r s, etc.)
ord inary 60/40 solder can be u se d . T h e sol d e ring iro n s h o u ld
h ave α 40 to 75 watt r ating wit h α 1/Θ inc h wi d e c h isel-s h a p ed
tip .
Observe th e following p reca utions w h en sol d eri n g to metal
termi n als :
1 . Apply
freely .
h eat
only long eno u g h to ma ke t h e sol d er flow
2 . Apply only eno u g h sol d e r to fo r m α solid connectio n ;
excess sol d er may im pair t h e f unctio n of t h e p art .
3 . If α wire extends beyond t h e solder j oi n t, cli p t h e excess
close to t he j oint.
4 . Clean th e fl u x f rom t h e sol d e r j oi n t wit h α fl u x-remover
solvent to mai n tain good environme ntal c h a racteristics and
a pp earance .
4-3
Maintenance-Ty p e
Switc h
7A13
R eplacement
9.
R emove
Mode
t h e screws t h at h old t h e +I NPU T and -I NPU T
switc h es to t h e front s u b pa n el .
V a rio u s ty p es of man u ally-o p erated switc h es are u se d in
t h e Ty p e 7Α 13: R otary, sli d e, s u bminiat u re sna p -actio n and
10 . R emove th e 9/1 ,s-inc h n u ts f r om t h e +I NPU T and
p u s hbu tton . If α switc h (excl u d ing t h e ill u minate d p u s h b u tton
-I NPU T BN C connectors .
type) is d amage d , it s h o u l d be re p laced as α u nit. If α
11 . R emove t h e two sc r ews at t he r ea r end of th e Atten u ill u mi n ated pu s h b u tto n switc h ( V c Polarity, BW, +I NPUT
boa rd t h at fasten t h e Atte nu ato r boa rd assembly to
M o dator
e or -I NPU T Mode) n ee d s to be rep laced , t h e switc h
t
h
e
s
up
p o r t brac k et.
is attac h e d to α ci rc u it boa rd an d t h is assembly m u st be
re p laced , as α un it . R efer to t h e M ec h a n ical Pa r ts L ist for
12 . L ift t h e Atten u ator board assembly (incl udes t h e elect h e p a rt nu mber of t h e assembly .
trical s h iel d fastene d to t h e board) o u t of th e p l u g-in u nit.
Observe t h e soldering p r eca u tions given previo u sly i n
13 . Re p lace t h e defective switc h by re placi ng t h e comt h is section w h en r e p lacing α switc h . U se t h e ex p lo d ed view
p lete boar d wit h switc h es attac h ed . B e s u re to save p a r ts,
in t h e rea r p o rtio n of t h is ma nu al as α g u id e w h en removing
s u c h as t h e sh iel d an d switc h lam p h o u sings, t h at m u st be
and reassembling mec h a n ical pa rts . T h e followi n g re p lacet r ansfe rr ed to t h e new boar d . R eve rse t h e or d er of t h e above
ment informatio n is p rovid e d .
p roced u re to re-i n stall th e Atte nuato r board assembly, f r ont
p a n el, k nobs and ot h er p arts t h at h ave bee n removed .
+ I NPU T or -I NPU T Mo d e Switc h . U se t h e followi n g
p roced u re w h en re p laci n g eith e r switc h .
ΝΟΤΕ
1 . Remove all k nobs exce p t th e release latc h k nob . To
Wh en re p lacing t h e Atten u ator board assembly,
remove th e V c REF -ID EN T p u s h b u tto n k nob, fi r st loose n t h e
first install t h e screws t h at h ol d t h e p u s h b u ttons
P OSITIO N kn ob setscrew an d t h e n pull off t h e POSITIO N
to t h e front s u b p anel . T h is ens u res t h at t h e p u s hk nob . T h e Vc REF -ID EN T k nob will sli d e off at t h e same
b u ttons will be centere d in t h eir res p ective s q u are
time.
h oles to p reve n t r u bbing or binding w h en t h ey
2.
R emove
wrench .
t h e G n d con n ector assembly u si n g α %-inc h
3 . R emove t h e V c O U T 0-10V j ac k by unsoldering the
cable wi re lea d a n d t h e ca p acitor co nn ecte d to it . T h en,
u se α 5/1,6-inch wrenc h to loose n t h e j ac k at th e front p anel
locatio n . U se α small screwdriver as α wed ge to h ol d t h e
rear mo u nting n u t stationary as th e j ac k is loosened for removal . R emove t h e jac k .
4 . Pull t h e release latc h o u tward to allow r emoval of t h e
fron t p a n el . Remove th e front p anel, t h e R
;,-- οο indicato r
lig h t lens an d t h e V O LTS co u nte r lens h older assembly .
ΝΟΤΕ
T h e R,, - cc indicator lig h t lens a n d t h e V O L TS
Co u nter lens h ol d er assembly fit loosely in t h e
s u b p anel . H ol d t h e Ty p e 7 Α 13 wit h t h e front
facing u p ward to p revent t h ese p arts from falling
o u t w h ile removi n g t h e front p anel .
5 . R emove t h e Atten u ato r elect r ical s h iel d cover by removi n g th e two screws t h at h old it in p lace .
are o p erate d .
BW or Pola rity Switch es .
Th e
p roced u re is as follows :
1 . Perform ste ps 1 t h ro u g h 4 of t h e +I NPUT
re p lacement p roced u re .
Mode
Switch
2 . Disconnect t h e m u lti- p in connectors from t h e switch circ u it boa rd .
3 . R emove t h e front- p anel screw t h at h olds t h e switc h an d
ci rc u it boar d assembly .
4.
R emove
t h e switc h wit h its circ u it board .
5.
Re p lace
t h e switc h and circ u it board assembly .
6 . To r e-i n stall th e assembly, r eve rse t h e order of t he
above p roced u re .
CO MPAR ISO N V O LTAG E Switch . T h e followi n g re p lacement p roce d u re is suggested :
1 . Pe r form ste p s 1 t h ro u g h 4 of t h e +I NPUT
re p laceme n t p roce d ur e .
Mode
Switch
2 . Disconnect t h e m u lti- pi n co nn ecto r from th e CO MPA R ISO N V O L TAG E switch asembly ci r c u it boa rd an d discon6 . nect
U nsolder t h e t hree Atte nu ator wires w h ere th ey attac h
t h e 4- p in connector from t h e Vc P ola r ity switc h boa r d .
to t h e front en d of t h e In p u t board .
3 . U se F ig . 4-10 to c h ec k th e color cod e of t h e switc h wires
7 . Un sold er t h e ca pacitors a n d lea d s w h e r e t h ey a r e atw h ere t h ey co nn ect to t h e p i n co nn ectors on t h e O u t p u t
tac h e d to t h e BN C I NPU T co nn ectors .
board . Ma ke α note of any d iffe re n ces . Disconnect th ese
wires .
ΝΟΤΕ
4 . R emove t h e two screws t h at h old t h e switc h to t he
To ma k e removal of t h e Atten u ator boar d asfront s u b pa n el .
sembly easier, t h e .019 μ F co u p ling ca p acitors
5 . R emove th e switc h com p lete wit h gear train and V O L TS
s h o u ld be com p letely removed .
Co u nter rea d o u t.
Β . M a k e α color-co d e wi r i n g s k etc h of t h e eig h t wires t h at
co nn ect to th e bac k si d e of t h e Atten u ator board . Disconn ect th ese wi r es f r om t h eir p in connectors .
4-4
VO L TS/DIV Switc h .
matio n as α g u i d e .
U se t h e following removal infor-
Maintenance-Ty pe
1 . Set t h e PULL V A R FO R X10 Vc R A N G E kn ob to its
o u twar d positio n . R emove t h e VO L TS/DI V and V A R IA BLE
k nobs .
panel, k nobs and ot h e r p arts t h at h ave bee n remove d .
Be
th e pu s h b u ttons wo rk freely w h e n re-installing t h e Atten u ator boa rd assembly .
s ur e
2 . Ma ke α color co d e wiri n g s k etc h of t h e VO L TS/DI V
switc h wires . U nsolder t h e wires .
3 . Loosen t h e t h ree setscrews th at h old t h e VA R IA BLE control s haft co up li n gs to th e VA R IA BLE cont rol plastic exte n sio n
s h aft . (Do not loosen t h e setsc rew in th e p lastic half co up li n g
attac h ed to th e V A R IA BLE control d r ive s h aft b u t do loosen
t h e setscrew in t h e front h alf of t h is two- p iece p lastic coupling .)
4 . Sli d e t h e f r ont h alf of t h e p lastic co u p ling fo r wa rd .
5.
t h e p lastic exte n sion s haft wit h its co up li n gs .
R emove
6 . L oosen t h e fo u r 3/1,6 -inc h nu ts on t h e V O L TS/DI V switc h
t h at h ol d t h e rear end of th e switc h to t h e s up port brac k et.
7 . R emove t h e 7/1 , 6 -inch fro n t p anel n u t f r om t h e V O L TS/
DI V switc h .
8 . L oosen t h e n u ts on t h e PULL V A R FO R Χ 10 R A N G E
1
sli d e switc
h u ntil th ey are located near th e e n d of th ei r
mounting stud s . L ift th e slide switc h to allow removal of th e
slide switc h co u p ling off t h e V A R IA BLE co n trol metal extension s h aft . R emove t h e slide switc h co up li n g .
9 . L oosen th e setscrew in t h e V A R IA BLE control s h aft εοΙ lar . Sli d e t h e colla r off t h e metal exte n sion s h aft .
7Α 13
T R O UBLE S H OOTI N G
Introd u ction
T h e following informatio n is p rovided to facilitate tro u bles h ooting of t h e Ty p e 7Α 13 . Information contai n ed in ot h e r
sections of t h is man u al s h o u l d be used along wit h t he following i nformation to ai d in locating the d efective comp one n t. An u nd erstanding of t h e ci rc u it o p eratio n is ve r y
h el p f u l in locating tro u bles . See t h e Circ u it Desc r i p tio n section for com p lete informatio n .
General
If tro u ble occu rs in t he Type 7Α 13, t h e following p r oced ur e
is recommen d ed to accom p lis h ra p id a n d effective re p airs .
. C h ec k t h at t h e p l u g-i n un it and t h e oscillosco p e connecto rs a r e not d amaged, a n d t hat t h e p l u g-i n u nit is p ro p e r ly
inserted .
2 . I n s p ect t h e fro n t panel of t h e Ty p e 7Α 13 a nd indicato r
oscillosco p e to be s u re t h at t h e tro u ble is not from an i n correct co n trol setting .
3 . Ins u re t h at t he indicator oscillosco p e is not at fa u lt by
10. R emove t h e two V A R IA BLE control extension s h aft
inserting
α known p r o p erly-o p erating p l u g-in un it an d c h ec k retaining r ings locate d on eac h si d e of t h e rota ry switc h
ing its o p eration .
sto p .
11 .
R emove
4 . Determine all tro u ble sym ptoms .
t he switc h .
12 . Wh en re p lacing th e switc h , c h ec k t h at t h e p lastic exte nsio n s h aft exte n d s abo u t 1/16 -inc h into th e p lastic half
co u p ling fastened to t h e VA R IA BLE cont r ol . T h is enables t h e
s haft to sli d e smoot h ly i n to t h e co u p ling wh en t he PULL V A R
F O R Χ 10 RA N G E kn ob is p u s he d n .
i
L am p R e p lacement
followi n g p roce d u res d esc r ibe
lam ps u se d n t h is i n stru ment.
Th e
i
re p lacement of t h e
UN CA L L am p . U nsna p t h e p lastic ca p from t h e neon
lam p h old er. U nsolder t h e lam p from t h e ca p and install
th e new lam p .
5 . P erform α vis u al ins p ection of t h e Ty p e 7 Α 13 .
6.
R e p ai r
or re p lace obvio u sly defective p a rts .
7 . Tro u bles h oot t he Ty p e 7Α 13 as necessa r y .
8.
Recalibrate
t h e Ty p e 7Α 13 .
Indicator Oscilloscope
T h e q u ic k est c h ec k of th e in d icator oscillosco pe is to u se
it wit h α goo d p l u g-in u nit, or c h ec k t h e q u estionable p l u gi n wit h a n ot h er oscillosco p e . R efer to t h e oscillosco p e man u al
to verify p ro p er o peration of t h e oscillosco p e .
O perating Proced u res and Control Settings
R;,, - φ or νε Decimal Readout Lamps . R emove t h e
two screws th at h ol d t h e blac k p lastic lam p cover in p lace .
R efer to th e O p e r ati n g Instru ctions Sectio n to verify opRemove th e lam p cover . P artially remove t h e circ u it boa r d
erating
p r oce d ur es and f r ont p a n el co ntrol setti n gs of th e
o u t of t h e instr u ment and disconnect th e m u lti- p i n co n nector .
Ty p e 7Α 13 .
R e p lace t h e d efective lam p .
Vc P olarity or BW L am p .
th e metal lam p cover in p lace .
p lace t h e defective lam p .
Remove
R emove
t h e screw th at h ol d s
t h e lam p cover . R e-
Trou ble Symptoms
T h e Ty p e 7 Α 13 r es po n se to all fro nt p a n el controls s h o u l d
be observed . T h e First-Time O p eratio n in Section 2 o r t h e
P erformance C hec k in Sectio n 5 may be u se d for t h is p urp ose .
+ ΙΝΡUΤ o r -I NPUT M ode Switc h L amp . P erform
ste p s 1 thr o u g h 12 of t h e +I NPU T Mo d e Switc h r e p lacement
All tro u ble sym p toms s h o u l d be eval u ate d an d com p a re d
n st eac h ot h er . Α circ u it fail u re will ofte n create α combip roceagai
dur e . R emove t h e screw th at hol d s t h e metal lam p
nation of sym ptoms t h at will enable t h e tro u ble to be isolate d
cover i n p lace . R emove t h e lam p cover . R e p lace t h e d efective lam p . R e-install t h e Atten u ator board assembly, f r ont
to α p artic u lar area .
4-5
Main tenance-Ty pe
Visual
7Α 13
Ins p ection
Trou bles h ooting
In p h ysically examining t h e Ty p e 7 Α 13, ta k e special note
of th e a r ea in d icated by eval u ation of symptoms . L oo k fo r
loose or bro k e n co nn ections, im p r o p erly seated t r a n sisto rs
an d b ur ned or ot h e r wise damaged p arts . R e pai r or re p lace
all obviou sly defective components .
Calibration C h ec k
Direct Re p lacement
Semi-con d u ctor fail u res acco u nt for t h e ma j ority of elec-
t ronic eq u i pment tro u bles . T he ease of replacing transistors
often ma k es s ub stit u tio n th e most p ractical mea n s of r e p air .
If th is meth od is u sed, t h ese g u ide li nes s h o u l d be followed :
Determi n e t h at th e ci r c u it is safe for t h e s u bstit u te compo n e n t .
U se only s u bstit u te com p onents th at are k now n to be good .
Tro u bles can freq u ently b e located and co rrected by r ecalib rati n g t h e instr u ment . U nless th e circ u it fail u re h as definitely b ee n isolate d to α s p ecific ci rc u it, it is recomme n ded
t h at t h e calib r ation p roce d u re in Section 5 be p erformed to
p r ovide α logical circ u it t ro u bles h ooting seq u e n ce .
DE TAI LE D
by
TR O UBLE S H OOTI N G
General
If t h e t ro ub le has not been d isclosed a n d correcte d
t h ro u g h t h e p roced ur e ou tli ne d , α d etailed tro u bles h ooting
analysis will h ave to be p erformed . Th e Circ u it Descr i p tion
sectio n , th e Sc h ematic Diagrams, a n d t h e tro u bles h ooti n g
ai d s contained in t h is section are d esig n ed to ex p e d ite tro u b les h ooting .
T h e Ci rc u it Desc ri ption sectio n provi d es α f u ndamental υη -
d ersta n d i n g of ci rc u it o p eration an d is refer r ed to t h e Sch e-
R emove t h e p l u g-in from th e oscillosco pe before s u bstit u ting
com p onents, to p rotect both you a n d t h e eq u i p me nt.
B e s ur e com p one nts a re i n se rted p ro p e rly . U se F ig . 4-2 as
an aid .
C hec k operation after eac h com ponent is re p laced .
R et u
rn good com p onents to t h eir original soc k ets .
C h ec k calibration after α ba d component h as bee n rep laced (see Table 4-1) .
Tro u bles h ooting Aid s
Diagrams. Ci rc u it d iag rams a r e s h own on fol d o ut pages
in Sectio n 8 . T h e circ u it n u mber a nd electrical val u e of eac h
com p one nt i n th is u nit a r e i nd icate d on t h e d iagrams . Im po rtant voltages and wavefo r ms a r e also s h own .
matic Diagrams . T h e Sch ematic Diagrams contain voltage
Switc h Wafer Identification . Wafers for t he switc h es
an d resista
n ce val u es a n d signal waveforms . T h e s p ecifie d
are
co d ed on th e sc h ematic d iagrams to indicate t h e p h ysical
o p e rating con d itio n s s h o u ld be d u p licate d before ma k ing
locatio n of t h e wafe r on t he act u al switc h es . T h e n u mbe r
voltage or waveform com pa risons .
portio n of t h e code refers to t h e wafe r n u mber on th e switc h
assem b ly . W afe rs are n u mbere d from th e fi r st wafer locate d
NOTE
b e h ind t he detent section of t h e switc h to t h e last wafer . T h e
lette rs F a n d R in d icate w h et h er t h e f r ont or rear of t he wafer
V oltages
a n d waveforms may vary slig h tly between
is
u se d to p erform t h e partic u la r switc h ing f u nction . For exi n str u ments . Th ose given in t h e sc h ematics s h o u l d
am p le, 3 F of t h e V O L TS/DI V switch ind icates t h at th is is t h e
be c h ec k ed
t eac h instrument w h ile it is opfro n t side of t h e t h ird wafer w h e n co u nting bac k from t h e
erati n g properly . Deviations sshould
h o u l d be n ote d on
f r o n t p anel .
t h e sc h ematics for later reference .
Test Eq u i p ment R ecommen ded for Tro u ble-
s h ooting
T h e test e q u i p ment liste d h ere s h ou ld s u ffice for most tro u bles h ooting j obs . Test eq u i p me n t re q u i r ed for calibratio n is
liste d in t h e Pe r fo r ma n ce C h ec k /Calib r atio n sectio n of t h is
man u al .
H ig h Im p e d a n ce V oltmeter (20,000 Ω / V DC o r greate r)
O h mmeter
(2 mA o r less c u rrent on t h e Χ 1 kΩ scale)
Test Oscillosco pe an d P robes
Plug-In E xtender
Dy n amic Transistor Tester
If t h e o u t p u t DC balance is c h ec ked fi r st and is in er r o r,
wo rk toward t h e front u ntil an u nbalance no longe r exists .
Th is localizes th e tro u ble to t h e circ u it ry between t h e points
wh ic h are balanced an d th e p oi n ts w h ic h a re u nbalanced .
Th e i n d ivi d u al com pone n ts m u st t he n be c h ecked .
4-6
i
Wi r ing Colo r Code . All n s u lated wi res in t h e Ty p e 7 Α 13
are colored coded to facilitate traci n g t h e wire f rom o n e
poi n t to anot h er .
R esisto r Co d ing . Th e Ty p e 7 Α 13 u ses α nu mber of very
stable metal film r esistors u s u ally identified by t h eir gray o r
lig h t bl u e bac kg ro u n d colo r a nd colo r co d ing .
If α metal-film resistor h as th ree significa n t fig ur es wit h α
m u lti p ler, t h e resisto r will be ΕΙΑ color coded accor d i n g to
t h e se q u ence ill u strated i n F ig . 4-3 . If th e r esistor h as fo ur
significant fig u res wit h α m u lti p lier, t h e val u e will be p ri n ted
on t h e r esistor . For exam p le, α 333 kΩ resisto r will be colo r
co d e d , b u t α 333 .5 k Ω resistor will h ave its val u e printed on
t h e resisto r.
Circuit B oa r d Ill u strations . Fig . 4-6 t h ro u g h 4-11 s h ow
illustrations of t h e in d ivid u al ci r c u it boar d s, wit h t h e ci r c u it
n u mbers fo r eac h com p o ne n t identified on t h e boa rd . In
ad d itio n , t he wiri n g color cod e to eac h p in connector is given . On t h e d iag ram th e circ u it boa rd a r eas are o u tlined
i n bl u e as an ai d to locati n g com pone n ts t h at are associate d
with α boa rd .
Maintenance-Ty pe
and
R esisto r
Ca p acito r Colo r Code
Tole
Mu lti p lie r
Signifi- Ι
Resiscant
ResisCa p aci-1
Colo r
F ig ur es _toys
tors Ι
tors
Comp osition Resistors :
Silve r
--10
--±10 ο/ο
--Gol d
10 - 1 Ι --- Ι ±5%
0
B lac k
1
1
---
ra n ce
Ca p acito r s
----
-2
Γ
Br own
10
2
Red
R esisto r s :
Metal-Film
3
O r a nge
±3%
Yellow
Gr een
10
±0
Bu
l
e
Violet
Gray
Ceramic Ca pacitors :
--Wh ite
and
(none)
Ο
3 -1st, 2n d a n d 3 rd significant fig ures;
-mu ltip lier;
*F or
ΤΟ -tole ra n ce ;
10
10
4
Ι 10
~_ 10
10 4
5
10 5
Ι
6
Ι
Ι
7
8
Ι
10
6
±2 ο/ο
2
2
3
_L1 %
Ι
10
3
±4 ο/ο
10 4
5
105
-----
--1 ρ -2
9
---
10 -1
---
---
---
cap acita n ce of 10 pF o r less.
.5%
-
Ι
-----
±20 ο/ο
Ι
Ι
+20% or
2 pF *
_L1% or
0 .1 p F *
±2%
±3 %
ο
+100%
-0%
_-L5% or
0.5 pr *
---
--+800/.
-20%
or 0 .25 pF *
±10% or
1 pF *
--t:10 0/. or
1 pF*
NOTE : (D a nd /o r TC colo r code for ca p acito rs de p en d s upon
ma nufact ure r a n d capacito r typ e . May not be pr esent in some cases .
temp e rat ure coefficient .
0-
F ig .
4-3 .
R esistor
an d ca p acito r color code .
Tro u bles h ooting Tec h niq ues
r
1
7Α 13
T h is tro u bles h ooti n g p roce d u re is arra n ge d in an o rd er
w h ic h c h ec ks t h e sim p le tro u ble possibilities befo r e p rocee d ing wit h more d etaile d tro u bles h ooti n g . T h e first few c h ec ks
ass u re p ro p er connection, o p eration and calibration . If t h e
tro u ble is not located by t hese c h ec ks, t h e remaining ste ps
ai d in isolating t h e tro u ble to α partic u lar circ u it; t h en t h e
circ u it m u st be c h ec k ed to locate t h e d efect i n t h e circ u it .
Wh en th e d efect is located, t h e re p air s h o u l d be ma d e u sing
t h e information p revio u sly p rovi d e d in t h e Corrective M ainte n ance portio n of t h is sectio n .
C h ec k Front- Panel Control Settings . Incorrect control
settings can in d icate α t ro u ble t h at d oes not exist . F or example, an incorrect setting of t h e VA R IA BLE control a p pears
as incorrect gain . If the re is any q u estion abo u t t h e correct
f u nction or o p eration of any con t rol, see t h e O perating
I n stru ctions sectio n for th e Ty p e 7Α 13 or t h e associated oscillosco p e .
Tro u bles occ ur ing in t h e oscillosco p e can u s u ally be d etected by s u bstit u ti n g α no r mal o p erating p l u g-in u nit for t h e
Ty p e 7 Α 13 . T h en, α tro u ble s u c h as α loss of t h e internal
trigger sig n al, ca n be r ea d ily isolate d to eith er t h e p l u g-in
u nit or t h e oscillosco p e . If α s u bstit u te u nit is n ot available,
th e trigger signal can be isolated by u sing anoth er oscillosco p e' as α test oscillosco p e for signal-tracing t h e Ty p e 7Α13 .
NOTE
B e s u re p ro p er line voltage (t h at d oes not exceed
h armonic d istortion limits of t h e in p u t p ower waveform) is a pp lie d to t h e oscillosco p e u sed wit h t h e
Ty p e 7 Α 13 . T h is ass u res t h at t h e oscillosco p e lowvoltage p ower s u pp lies will reg u late p ro p erly .
Isolating DC Imbalance . Α p ro p erly o perating oscillosco p e will h ave its trace centere d vertically on t h e C RT only
w h e n t h e Ty p e 7 Α 13 h as α balanced o u t p u t . T h e Ty pe 7 Α 13
is α bala n ce d am p lifier w h en t h e P OSITIO N co n trol is set to
mi d range and all t h e DC balance controls are p ro p erly a d
Isolate T rouble to Type 7Α 13 or Oscillosco p e . Wh en
ju sted . Wit h no signal or com parison voltage a pp lied to t h e
a
following α tro u bles h οο ti η g p roce d u re ,,,
it is assu me d t h at
FE T gates (Q120 Q220)ny
poi n t in t h e +In p u t sid e of t he
t h e oscillosco p e' u se d with t h e Ty pe 7 Α 13 is o p erating norcirc u it s h o u l d h ave α p ote n tial essentially eq u al (exce p t for α
mally . Si n ce th is is n ot always t he case, c h ec k th e o p eration
mi n o r voltage d iffere n ce occ u rri n g in th e In p u t Am p lifier
of t h e oscillosco p e before attem pting to tro u bles h oot t h e
stages) to t h at at an identical p oint i n t he - In p ut si d e of t h e
Ty pe 7Α 13 .
circ u it
4-7
Maintenance-Type 7Α 13
If t h e C RT t r ace is deflected off t h e screen as α res u lt of
α Type 7 Α 13 problem, DC u nbala nces exist . T h ey can be d etected by co n necting α DC voltmete r between i d e n tical
points s u c h as th ose listed in Table 4-2 . (Α p l u g-in exte n d er
is nee d ed d ur ing t h is p roce d ur e to allow access to t h e points
being c h ec k ed .) V oltage d iffe re nce limits a re p rovide d n
th e table to s h ow h ow m u ch voltage d iffere n ce can be present betwee n two p oints w h e n t h e t r ace is positioned to t h e
to p or bottom of t h e gratic u le with respect to gratic u le center . If t h ese limits are not excee d ed , th e t r ace s h o u ld be
p r esent wit h i n th e gratic u le viewing a rea .
i
TA BLE 4-2
DC I MB A L AN C E V O LTAG E DI FFERENCE L I M ITS
( VO L TS/DIV S WITC H S E T TO .1)
Voltage
Difference
L imits'
DC V oltmeter Con n ected B etween
t h e Following Test P oints
ΤΡ 360 and ΤΡ 460
Q340 Collector a n d Q440 Collecto r
Q330 B ase and Q430 B ase
Q300A Collecto r and Q300 B Collecto r
Q1 95A Collector a n d Q195 B Collector
Q170 Collector an d Q270 Collecto r
Q152 E mitter a n d Q252 E mitte r
Q130A
E mitter
an d Q130 B E mitte r
Ι
±0 .20 V DC
±0 .07 V DC
±0 .02 V DC
±0 .10 V DC
±0 .02 V DC
±0 .03 V DC
-0 .03 V DC Z
±0 .04 V D CZ
'To obtain on-screen p ositio n i n g of t he tr ace .
'Take i n to consideration t h at an add itio n al voltage difference as
hig h as ±0 .04 V ca n be prese n t betwee n these two p oi nts in α
normal op e rati n g p l u g-i n unit .
As α s u ggested p roce d ure, c h ec k t h e o u t pu t DC balance
fi rst . If it is i n e rr o r, wo rk toward th e i n p u t stages un til an
un bala n ce no lo n ge r is detecte d . T h is localizes t h e tro u ble
to t h e circ u itry b etwee n t he p oi n ts p r ovi d i n g bala n ce an d
th ose provi d i n g un bala n ce .
Signal T r acing . Α met h od is desc ri b e d h ere fo r c h ec k i n g
wavefo r m am p lit u d e a nd p ola rity at t h e test p oint s h ow n on
the Atte nu ato r & Switc h ing, Inp u t Am plifie r a nd O u tp ut Amp lifie r sc hematic diag rams. Th e tec h niqu e is b ased on u sing α
p l u g-i n exte n d er to o p e r ate t h e Ty p e 7Α 13 o u tsid e t h e oscilloscope p l u g-in com partme n t . T he p l u g-in extend e r p ermits
access to th e ci rc u its i n t h e Ty pe 7 Α 13 for d etaile d sig n al
t r acing an d t ro u bles h ooting .
nector and to the test oscillosco pe exte rnal Trigge r
conn ecto r .
I
npu
t
4 . Set t h e test oscillosco p e I n p u t Co u pling switc h to AC,
t h e V / d iv switc h to .1, t h e Time/cm switc h to 0 .2 ms, a n d
t h e trigge r i n g controls fo r + ΕΧΤ triggeri n g on t h e 4 V calib rator signal .
ς , R emove t h e atte nu ator s h iel d . To u c h t he test oscillosco p e 10 Χ p robe ti p to t h e sol d ere d co nn ection (wire d e nd )
of th e I nput co n nector ce n te r cond u ctor fo r th e c h annel to
be c h ec ked .
6 . Set t he test oscillosco pe T r iggeri n g L evel control so t h e
first h alf cycle of t h e wavefo r m is p ositive going . T h e d isp layed wavefo r m on t h e test oscillosco p e s h o u ld co rres p o nd
to th e wavefo rm pola r ity a n d am p litud e s h own at t h e In p u t
co n necto r test p oint on th e Atten u ator & Switc h ing diagram .
Disco nn ect t he p robe .
7. On th e diagram, locate t h e next test p oi n t w h ere α
waveform is shown . Set th e test oscillosco pe ve r tical d eflection factor to co r res p o n d to t h e setting given at t h e left side
of t h e d iag r am wavefo r m .
8 . Locate t h e same test poi n t i n t h e Ty p e 7 Α 13 th at corres po n d s to t h e one on t h e d iagram an d connect t h e p robe
ti p to t h is test p oi n t. C h ec k t h e d is p laye d waveform am p litu de an d p olarity . Disconnect th e p robe .
9 . R e p eat ste ps 7 and 8 u ntil α test p oint is fo un d w h ere
an abnormal in d icatio n is definitely obtaine d . T h en p rocee d
wit h detailed tro u bles h ooti n g c h ec ks betwee n t h at stage a n d
the pr eceding test poi n t to isolate t h e t r o u ble to t h e smallest
possible area u ntil t he ca u se of t h e tro u ble is fo u nd . Detailed c h ec k s consist of sig nal tracing t h e circ u its betwee n th e
test p oints to d etermine w h e re t h e signal becomes ab n ormal .
T he n voltage c hec k s may h ave to be ma d e ; semico n d u ctors
an d oth er com p one n ts may h ave to be s ub stit u te d .
Com ponent C h ecks
Transisto rs (excl ud ing FET's) . T he best mea n s of c h ec k i n g α tra n sisto r is by u si n g α t r a nsistor c ur ve d is p lay inst ru men t s u c h as t h e Te k t ro n ix Ty p e 576 . If α tra n sistor ch ec k er
is n ot rea d ily available, α d efective t ransisto r can be locate d
by sig n al traci ng, by ma k ing i n -ci rc u it voltage c h ec k s, by
meas uri n g t h e transistor resistances o r by t h e s u bstitu tio n
method previo u sly d escribed .
When tro u bles hooti n g u si n g α voltmeter, meas u re t h e
Afte r t h e fa u lty stage is located a n d th e t r o ub le fo un d
emitter-to-base a n d emitte r-to-collector voltages to d etermine
a nd co rr ected, t h en it is easy to remove t h e exten d er, i n se r t
w h et her t h e voltages are consiste n t wit h no r mal circ u it νοΙ t h e p l u g-in in t h e oscillosco p e and go di rectly to t h e P er. Voltages across α tra n sisto r va ry with t h e d evice and
fotages
r mance Check/ Calibration proced ure in Sectio n 5 to c h ec k
its
circ
u it f un ction . Some of th ese voltages a re p red icta b le .
fre q u ency compensation a n d ot h e r perfo r mance re qu ireme n ts .
Α silico n tra n sisto r will normally be 0 .6V . T h e collectoremitter
To sig n al trace t he Ty p e 7Α 13 am p lifie r stages, procee d
voltage will vary wit h t h e ci r c u it a nd ci rc u it condias follows :
tions, b u t it s h o u ld always excee d 0 .5 V . T h e best way of
chec k ing t h ese d evices is by co nn ecting α voltmete r ac ross
1 . Co nn ect α pl u g-in exten d er betwee n t h e Ty p e 7Α 13
t h e ju nctio n a n d u si n g α sensitive voltmete r setting (see Fig .
a n d t h e i nd icato r oscillosco p e .
4-4) .
2. Set th e fro n t- pa n el co ntrols of t h e Ty p e 7 Α 13 to the
o h mmeter can be used to c h ec k α transistor if t h e safe
same pAn
ositions as listed i n t he IMPO R TA NT note locate d
meter's
voltage so u rce a n d c u rrent are k e pt wit h in
on t h e i n side p o r tio n of t h e B loc k Diag ram pull-out p age .
limits . 1 .5 V a n d 2 mA a re generally acce p table . Selecting
3. Apply α 4 V p ea k to p ea k calib rato r sig n al t hr o u g h α
t h e Χ 1 k Ω scale on most o h mmeters will p rovi d e voltage
Τ connecto r and coaxial cables to th e Ty p e 7Α 13 npu t canand c u rrent below t h ese val u es .
I
4-8
Maintenance-Typ e
7Α 13
gree n i n dicates α d iod e with Te k tronix P a rt No . 152-0185-00 .
T h e cat h ode an d anod e of α metal-encased d io d e ca n be
i d entified by t h e d io d e symbol ma rk e d on t h e body . See
F ig . 4-5, Diod e P olarity and Color Co d e .
Resistors. R esisto r s can be c h ec k ed with an o h mmeter .
C h ec k t h e E lectrical Parts List for t h e tolera n ce of t h e resistors u se d in th is u nit . R esistors n ormally d o not nee d to be
re p lace d u nless t h e meas u re d val u e is in excess of t h e s p ecifie d tolerance .
Ca pacito r s . Α lea k y or s h o rted ca p acitor can be d etecte d
by un sol d e r i n g one end of t h e ca p acito r a n d t h en c h ec ki n g
resistance wit h an o h mmeter, u si n g t h e h ig h est scale t h at
d oes n ot exceed t h e voltage rating of th e ca pacitor. Th e
resistance rea d i n g s h o u ld be h ig h after t h e initial c h a r ge of
th e ca p acitor . An o pe n ca p acitor can be d etected wit h α
ca pacita n ce mete r or by c h ec k ing w h et h e r t h e ca p acitor
passes AC sig n als .
Fig .
4-4 . M eas ur i n g transistor voltages .
Table 4-3 contains t he normal val u es of resistance to exp ect w h en ma k ing an o h mmeter c h ec k of an oth erwise unconnected transistor .
TA BLE 4-3
T R A N SISTO R RESISTA N C E C HE C K S
O h mmeter
Co n nectio n s
R esistance
E mitter-Collector
H ig h rea d ings bot h ways
E mitter- B ase
Base-Collector
Rea d ing
T h at Can be
Translate to 3 digits
of Tek tr o n ix pa rt
nu mb e r
Ex p ecte d U si n g t h e R Χ 1 k Range
H ig h rea d ing one
rea d ing th e ot h er
H ig h rea d ing one
rea d ing t h e ot h er
way, low
way
way, low
way
'Test pro ds from t he o h mmete r a re first con n ecte d to t h e tra n sisto r
leads a nd t h e n t h e test lea d connections are reve r se d . T hu s, t he
effects of the p ola r ity reve rsal of th e voltage a pp lied f rom t h e o h mmete r to th e transistor can be o bserved .
Fiel d E ffect Transistor C h ec ks. F iel d Effect Transistors
( FET's) ca n be c h ec k e d in t h e same man n er as oth e r t r a n sis
tors . H owever, it sh o u l d be noted th at normal o p eration in
th e Ty p e 7Α 13 h as t h e gate-to-so u rce jun ction reverse biased
h e control grid-to-cath o d e is biased in vacuu m tu bes .
ju st as tIf
Dio d es . Dio d es may be c h ec k ed in m u c h t h e same ma n ner as transistors by resista n ce c h ec k s . T h e r esista n ce s h o u ld
be h ig h in one directio n a n d low in t h e ot h er . Again, ca r e
m u st be ta k en not to exceed t h e voltage an d c u rre n t limits .
Some d io d es u sed in t h e 7Α 13 a r e color cod ed to i d e ntify
th e d io d e ty p e . T h e cat h ode end of each glass-encase d d io d e
is in d icated by α st ri p e, α series of stri p es o r α d ot . F o r most
d iod es wit h α se r ies of stri pes, t h e first stri p e (eit h er p in k or
bl u e) i n d icates α Te k tronix p art an d t h e next t h ree stri p es
indicate t h e t h ree significant fig u res of t h e Te k tro n ix Part
Nu mber . Example : α d iode color co d ed bl u e-brow n -gray-
Pin k o r B l u e
Ι
b a nd ind i-
cates next three b and s
t ra n slate to α Tekt ro n ix
p a rt num be r
E xam p le : pi nk- r ed -o ra n ge-o r a n ge
/
\J/
Tektronix 152-02 3-00
F ig 4-5 . Diode p ola rity a nd color co d e .
IN STRUMEN T REPAC K AGI N G
t h e Ty p e 7Α 13 is to be s h i pped for long d ista n ces by
commercial means of tra n s p o rtation, it is recommen d e d t h at
t h e instr u ment be re p ac kage d n t h e original ma nn er for
m axim u m protection . T h e o r igi nal s h ip ping carton can be
save d a nd u se d for t h is pu rpose . R e pac kaging i n formatio n
and/or n ew s h i pp ing carto n s can be obtaine d f rom Te k tronix, Inc. Co n tact yo u r local Te k tro n ix F iel d Office or
re p rese n tative .
i
NOTE
T h e p l u g-ins s h o u ld not be s h i p p ed i n stalle d in an
oscillosco p e . T h e oscillosco p e p ac k aging material
is not designe d to p rotect t h e p l u g-ins .
Maintenance-Type
7A13
Ν
'ΑΕ ' νια on ωhι -
'AD' yel-bl k on wht --
'AC' brn on wht ---'ΑΒ ' red on wh t
TV grn on w ht
' Χ' red- ΥΪΟ on tan
'
L' Υ brn
2' blk on wht
'ΑΑ' bIu-blk on wht=----
Fί g. 4-6. P artial Input Am plifier board showing component locations and wire color code.
4- 1 0
Maintenance-Type 7Α13
R 141'
C
'
o ,n on wh t
'R' b Ιυ on wh t
Fig .
4-7 .
Pa rtial
Input Amplifier boa r d showing com ponen t locatio ns an d wi re color code .
4-1 1
7A13
4-8
Partial Output Amplifier board showing component locations
Maintenance-Type
Fig.
4-1 2
.
.
Maintenance-Type 7AI3
P42B -, W,
Α
R519
15 1 D
F
CING ,
LP549,
.
11 - L R !,-I!]
"C511
R377 ,
-" 37
D
.
HW2 1
CA5
R375
10380
?q=W
,C477
1 177
I
0470
' R 475
. C4T,
, R W)
RM,
RM
-R351
R45C
( : v .5 ~
Ajl'
0460
'"W
CR364
CRQ5
Located
on rear
of Board
Fig. 4-9. Partial Output Amplifier board showing component locations .
4-1 3
Mai n tenance-Type
7Α 13
'ΑΟ ' yeΙ αη w h t -- ' Α Q' b1 υ οη ω h2
` ΑΝ ' gry-bl k αη wh t
'Α Fi' bik οη ωh τ
' ΑΚ ' οr π
'ΑIVi' αrη -b1k οη w s,t
'AL' re d οη ω t, τ
'A J ' νϊο -bi k οη w ht
'ΑG' biu
'A F ` biu οη wht
' Α ~' νία οη wh t
'Ν ` νίο αη ta n
'Μ ' ο rη οη r e d
`ζ'
bi k
Κ ' o rn-b1k οη wi,t
'J' bl k οη wfit'i' νϊο-b 1 k οη ω h τ 'Η ` g ry απ ω h τ 'G` νίο οη w ht-'F` bi u αη ωhτ 'Σ' gτη αη wh t --'C1` γe1 αη wht
`C' οrr r οη wht
' Β ' red αη wht
'Α ' b r n οη wh t
---' Β f.Τ tαη οη wh t
' ΒΜ ` bik οη νία
'Bl' red οη Σαr ι
Ρ' Σαη οη red
'Q' biu -b ΙΙτ αιι w h t ~
'Ρ' yet-bl k οη ω h τ
'Ο ` t απ οη ννει t
Fσg .
4- 1 4
4-10 . O ut pu t Am p l ί fie r board
'U' blk
' Τ ' g τη- b l k οπ wht
'S" r ed-bi k οη wi,t
s h owing
wί r e color code .
Maintenance-Type
Fig .4-11
.
Attenuator boa rd showing
7Α 13
co mp o n e n t locatio n s .
4- 1 5
NOTES
Ty pe 7Α13
S ECTIO N 5
PERF O RMA N C E C HE CK / CA LI BR ATIO N
C h ange
information, if
rear of t h e man u al .
any,
affecting t h is section will be fo u n d at t h e
Introdu ction
To ass u re instr u ment acc uracy, c h ec k t h e calibration of
th e Type 7Α 13 every 1000 h o u rs or every six month s if u sed
i nfre qu ently . B efore calibratio n , th oro u g h ly clea n and ins p ect t h is u nit as o u tlined i n t h e Mai nte n a n ce sectio n .
T h e P erforma n ce C h ec k /Calib r atio n P roce d ur e ca n be
to c h ec k i n str u ment performa n ce wit h o u t removi n g t h e
si d e cove r s o r ma ki n g i nter n al a dju stme nts by p e rfo r ming
eve r yth ing exce p t th e AD JU ST part of t h e ste p s . Screwd r iver ad ju stments w h ic h are accessible wit h o u t r emovi n g
th e cove rs are a d ju sted as p art of t h e p erforma n ce c h ec k
proce d u re . Ste p s 1 t hro u g h 7, and 12 t hro u g h 16, are calib r ation P roced u re Only ste p s and t h erefore s h o u l d be excl ude d w h en ma k i n g α pe r fo r mance c h eck .
u se d
Com p letion of eac h ste p in t h e com p lete P erfo r mance
C h ec k /Calibration P roced u re ins ures th at t h is instr u ment
meets th e elect r ical s p ecifications give n n Sectio n 1 . F o r
best ove rall inst ru ment p erforma n ce w h en p e rfo r mi n g α
com p lete calib ration p roced u re, ma k e eac h a d ju stment to
t h e exact setting even if t h e C HE C K is wit h in t h e allowable
tole r ance .
i
from t h e p relimi n ary setti n gs for t h is portio n of the calib r ation p roced ure, t h ey are listed un der "Contr ol Setti n gs"
n ea r t h e e q u i p me n t-req u i r ed p ict ur e .
To p reve n t unnecessary recalibratio n of ot h er p a rts of t h e i nst ru me n t, r ea d ju st only if t h e tolera n ce given in t h e C HEC K pa r t of t h e
ste p is not met . If read ju stment is necessary, also c h ec k
t h e calib r ation of any ste p s listed in t h e I N T ER ACTIO N part
of th e ste p.
TEST EQU IPMEN T REQU I RE D
General
T h e followi n g test eq u i pment and accessories, or equ ivale n t, a r e r eq u ired for α com p lete p erfo r ma n ce c h ec k or calibration of t h e Typ e 7 Α 13 . S p ecificatio n s give n a re t h e mi n im u m n ecessa r y for acc u rate p erfo rma n ce of t h is i n st ru me n t.
All test e q u i p ment is ass u med to be correctly calib r ated a n d
o p e rating wit h in th e given s p ecifications . If e qu i p me n t is
s u bstit u te d , it m u st meet or exceed t h e specificatio ns of t h e
recomme nd ed eq u i p ment .
For t h e qu ic kest and most acc u rate calib r atio n o r p e rΑ S h o rt- F orm P roced u re is give n prior to t h e com p lete
formance c h ec k , s p ecial Te k tronix calibratio n fixt u res a re
p roced ure . To facilitate instr u ment calibratio n for th e exu sed w h ere n ecessa r y. T h ese s pecial calibration fixt u res are
p erie nced calibrato r , t h e S h ort- F orm P roced u re lists t h e
available from Te ktronix, Inc . Ord er by d esc r i p tion an d p art
calib r ation ad ju stment necessary for eac h ste p a n d t h e αρnu mber t h ro u g h yo u r local Tektro n ix F ield Office or rep rep licable tolerances . T h is p roced ure also i n cl ud es t h e ste p
sentative
.
n u mber an d title as liste d in th e com p lete P erforma n ce
C h ec k /Calibration P roce d ure and t h e page nu mbe r on
NOTE
wh ic h eac h ste p begins . T h e r efore, t h e S h ort- F orm ProceF or p erformance c h ec k , t h e following items are
du re can be u sed as an i n d ex to locate α ste p n t h e comp lete p roced ure . Th is p roced ure may be r e p rod u ced a nd
not neede d : Items 9, 12, 17, 18, 26, 28, 30 an d
31 .
u sed as α permanent record of i n stru ment calibratio n .
i
ΝΟΤΕ
All waveforms s h own in t h is p roced u re were ta k en
wit h α Te k tronix Oscillosco p e Camera System
u sing α p ro jected gratic u le . L imits, tolerances and
waveforms i n t h is p roced u re are given as calibratio n g u ides and s h o u l d not be inter p reted as instr u me n t s p ecifications exce p t as stated in Sectio n 1 .
Α p artial calib ratio n is often d esirable afte r r ep lacing
α com p onent, or to to u c h up an ad ju stment of α p artic u lar
ci rc u it betwee n ma j o r r ecalib rations . For p a rtial calibration,
set t h e controls as give n u nde r P reliminary P roce d ur e an d
sta rt wit h t h e n earest test e q u i p ment p ict u re p rece d i n g th e
desired am
c h ec k or ch ec k s . If any co n t rols n eed to be c h anged
Test Eq u ip ment (incl u ding
accessories and tools)
calibration fixt u res,
(1) Te ktro n ix 7700 Series Oscillosco pe with α 7 Β series
Time B ase p l u g-i n un it and α pola r ize d viewer or viewi n g
h oo d . T h is p roced ur e ass u mes t h e i n d icato r oscillosco pe and
t h e time-base u nit a re calibrate d .
Α Ty p e 7704 Oscillosco p e with α Ty p e 71370 Time- B ase un it
was u sed w h en p re paring t h is pr oce d u re . T h e in d icator oscillosco p e 4-m V calib r ator signal, havi n g an am p litu de tole r a n ce of I%, is used to set t h e gain in ste p 8 . If g r eater
accu racy is needed , u se α 5-m V Ρ - Ρ signal from α sta nd a rd
p lit ud e calibrator (Te ktro n ix calib ration fixt u re No . 067-
P erfor mance C h ec k /Calibration-Ty p e 7Α 13
0502-00) h aving an am p litud e acc ur acy of 0 .25% as t h e
signal so urce . Set t h e GAI N co n t rol for 5 divisions of deflectio n .
(10) Inp u t R C No r malizer . R eq u ired c h a racteristics : R C =
1 mego h m Χ 20 p F. Equ i p p e d wit h BN C co n necto r s . Te k tro n ix Pa r t No . 067-0066-00 .
(2) S q u a r e- W ave Ge n erator . R eq u i red c haracteristics : O u t(11) Overd rive R ecove r y Test F ixtur e . Req u i r ed c h a ractrispu t re petitio n rate of 100 Hz to 1 kH z, 10 kH z an d 100 kH z .
tics : R eed switc h wit h drive coil fo r switc h i n g 15 volts exO u t pu t ter
imped a n ce of 600 o h ms or less . R isetime, 20 ns o r
n ally ap p lied . Te k tro n ix P a r t No . 067-0608-00 Overd rive
faste r from h ig h -am p litude o u t pu t; 1 n s or faste r f r om fastR ecovery test fixt ure recommend e d .
r ise o u t p u t. H ig h-am p lit u d e o u t pu t : Va r iable f rom 0.5 V to
(12) Plug-in E xtend e r. F o r Te k tro n ix Ty p e 7000 series i n 12 V i n to α 50-o h m loa d , a b o u t 7 V to 120 V un te r minate d .
stru ments . Te k tronix P art No . 067-0589-00 .
F ast-rise o u tp u t : Va riable from 50 m V to 500 m V into α 50oh m load . Te ktronix Ty p e 106 S qu a r e- W ave Generator
(13) L ong c ha r ge line . R equ i red c h aracteristics : L e n gt h ,
recomme nde d .
60 ητ . Im p edance, 50 oh ms, ±1 % . Cable q u ality, ap p r oximately 1 .5-d B loss p er 100 feet at 1000 MHz; r isetime a pp roxia r Co n stant A m p litu d e Sine-Wave Generato r. R eq u ire d
m ately 0 .1 ns . Equ i p p ed wit h G R connecto rs . Te k tronix Ty p e
c h acte ristics : O u t p u t fre
u e n cies of 3 MHz a n d 95 MHz
frequencies
113 Delay Cable fo r u se as α c h a rge li n e r ecomme n d ed .
to 125 MHz . O utpu t amplit u de, 800 m V into α 50-o h m load .
Am p lit u de acc uracy, wit h i n
i n t h e 95-to-125 MHz
±3%
(14) S h o r t c h a r ge line (O p tio n al) . Lengt h , 3 .45 ns (do u blera n ge u si n g the am p lit u d e at 3 MHz fo r refe r en ce . Te k tro n ix
transit time, see desc r i p tion t h at follows) . Im p eda n ce, 50
Consta n t Am plit u de Signal Ge n erato r, 067-0532-00 Cali brao h ms. G R con n ector on o n e en d; ot h e r end is o p en . T h e
tio n F ixtu re, r ecomme n d ed .
le n gt h of t h is c h a r ge line was obtai n ed by co nn ecti n g α 2- n s,
(4) Consta n t Amplit ud e Sine- W ave Generator. R equ i red
Ty pe RG58C/ U , 50-o h m cable, Te k tronix P a rt No . 017-050500, to t h e Type 109 and u si ng α Te k tro n ix Ty pe 561 Β /3Τ 2/
c h a r acte r istics : O u t pu t freq u e ncies of 50 kH z, 1 MHz, 5 MHz,
3S2/S-1 Sampli n g Oscillosco pe to measur e th e p u lse widt h at
10 MHz and 20 MHz . O u t put am p lit ud e, 80 m V i n to α 50t h e 50% am p lit u de level . T h en, t h e cable was c ut off at t h e
o h m load at 50 kH z and 5 MHz ; up to 2 volts ( un te r minated)
free en d u ntil it was t h e r ig h t le n gt h to p rod u ce α 3 .45- ητ
for t h e ot h e r f r eq u encies . Am p lit u de acc ur acy, wit h in ±2%
at 5 MHz w h e n u sing t h e am p lit u d e at 50 kHz as α refe rence .
p ulse wid th d is p lay, meas ured at th e 50% am p lit ud e level, on
t h e sam p li n g oscillosco p e C RT . Overall le n gt h of t h e c h arge
Te k tronix Ty p e 191 Consta n t Am p litu de Sig n al Ge n e rator
li n e u sed in t h is proce d u re was 14- 1/α i n ch es . (T h is lengt h
r ecomme n d ed .
does not apply to all cables beca u se cable le n gt h is de(5) Low- F re qu e n cy Si n e- W ave Generato r. Re q u i r ed c h a rp e n d e n t on cable a n d ge nerator ch aracter istics .) U se of th is
acte ristics : O u t pu t f re qu e n cies of 10 kH z a nd 100 kH z. O utc h arge li ne is α pr actical met hod for meas u ring r isetime mo r e
pu t am p lit u d e, mo r e th an 20 volts at 10 kH z ; 20 volts at
acc ur ately . T h is ch a r ge li n e is not n eeded if th e conve ntio n al
100 kH z .
meth od of meas ur ing risetime f rom th e 10% to 90% poi n ts
is u sed . H owever, w h en th e conventio n al met hod is used,
Ge n e ral R adio Ty p e 1310- Α Oscillato r , wit h α specified
swee p -timi n g acc uracy, o rt hogonality, an d geomet r y i n th e
amplitude of 20 volts o r mo re, was u sed for t h is p roced ure .
meas u rement area on t h e C RT m u st be ta ke n n to co nside r aT h is pa rtic u la r oscillato r h ad an o u t pu t of 50 volts p ea ktion .
to- ρ ea k at 10 kH z . U se α gene r ato r t h at can p rovide t h is
am p lit u d e w h en p e rfo rmi n g ste p 22 .
(15) Coaxial cables (two) . Im pe d ance, 50 o h ms ; length ,
5 n s; Type RG213/ U ; G R con n ecto rs . Te ktronix P art No . 017(6) Pu lse Gene rato r. R eq u ire d c h aracte r istics : R isetime,
0502-00.
S upp lied wit h items 2, 4 a n d 6 .
250 picosecon d s or less . Amplit u de, a d ju stable f rom 80 m V
to 40V i nto α 50-o h m loa d . R epetition r ate, p r eset between
(16) Coaxial cable . Im p eda n ce, 50 o h ms ; le n gt h, 42 inc h es;
500 ρ / τ a nd 720 ρ /s . Pu lse du ration, 3 .45 ητ a n d a pproxiBNC co n necto rs . Te k tronix Pa r t No . 012-0057-01 .
mately 130 ns, wh en meas ure d at t h e 50% am p litude level,
items 14 a n d 15 a re u sed as c h arge lines . Te k tro n ix Ty pe
(17) P atc h co rd . 6 inc h es long, wit h α BN C p l ug and j ac k
109 Pu lse Generato r recomme n d ed .
on o n e end a n d α bana n a p l u g and j ac k on t he ot h er e nd .
R ed, ord e r Te k tro n ix Part No . 012-0089-00 . B lac k , o r d er Te k(7) Pr ecision DC V oltmete r . R equ i re d c h a racte r istcs : Nont r onix Pa rt No . 012-0088-00 .
load i n g type . R a n ge, 100 m V to 10 volts . Acc u racy, 0 .02%
or bette r . J o hn F l uk e Diffe rential V oltmete r , M o d el 825Α,
(18) P atc h cords (two) . 6 i n c h es long, with ba na n a p l u g
was u sed i n t h is p roced ure .
and jac k connecto rs on eac h e n d . R ed, o rd e r Te k t r onix P art
(8) DC V oltmete r (V O M) . Re q u i r ed c h a racte ristics : SenNo . 012-0029-00 . B lac k , orde r Te k t ro n ix Pa r t No . 012-0028sitivity 00
of 20,000 Ω / V DC . L ow ra n ge, 0 to 3 V o r less . U sed
. Attac h o n e ins u lated alligato r clip (not s u p p lied) to o n e
fo r setting am p lifie r DC balance to zero volt . Fo r exam p le,
en d of patc h co rd .
T r i p lett Model 630 NA wit h test leads .
(19) P atc h co rd . 5 i n c h es long . Con sists of α p r o b e gro u nd
(9) Pr ecisio n DC Divide r. Re q u i r ed c haracte r istics : Atte nu lea d (Te ktr onix P a rt No . 175-0124-00) a n d α p robe spri n g ti p
atio n, 10 Χ a n d 100 Χ . Acc uracy, --±:0 .01% .
(Te k t r o n ix Pa rt No . 206-0060-00) .
i
Pe rfo rmance Check/ Calibration-Type 7A13
(20) Termi n atio n . Im ped ance, 50 o h ms ; G R to BN C male;
Acc uracy, _L1%, Te k t ronix Pa r t No . 017-0083-00 . Su p p lied
with items 2 and 4 .
(21) 10 Χ atten u ato rs (two) .
DC and
ρ
Imped ance, 50 o h ms ; acc u -
017-0078-00 .
(22) 5 Χ atte nu ato r . Im p eda n ce, 50 o h ms; acc ur acy, ±1 %
into 50 o h ms ; G R co nn ecto r s . Te k tro n ix P a r t No . 017-0079-00 .
Te ktro n ix
(24) G R-to- BN C female ad a p te r.
0063-00 .
Te k t r onix
Pa
rt No . 017-
P a rt
No . 017-
0
2. C h ec k /Ad ju st X10 DC
0
3 . C h ec k /Ad ju st Ste p Atten u ator DC
Tektronix
ρ
(29) Screwd river. T hree-i n c h s h aft; 3/32-inc h wid e bit for
slotte d sc r ews . Te k t r onix Pa rt No . 003-0192-00 .
(30) L ow-capacitance screw d rive r. Rod, ail plastic, 5 inc h es
lo n g ; h as screwdriver ti p on o n e end . Te ktronix Pa rt No .
003-0301-00 .
(31) Alignment tool . Consists of t he following :
0
n ce ( R288)
P age
B alance
5-8
p u lled
P age
5-8
Repeat
4 . C h ec k /A d ju st
a d ju stment)
ste p 2 .
P osition
Cente r ( R 335 final
Page
5-8
5 . C h ec k /Ad ju st T rigge r DC
Balance
( R371)
P age 5-9
C h ec k : Voltmeter readi n g of 0 volts betwee n ΤΡ 380
and ΤΡ 480 .
Inte ractio n :
ρ
Te ktronix
P a rt No .
Re p eat
ste p 4 a n d
then
6 . C h ec k /A d ju st Sig nal O u t put DC
( R 360)
L
step 5 .
evel
Page 5-9
C h ec k: Voltmeter r eadi n g of 0 volts betwee n ΤΡ360
and chassis g r o u nd .
003-0307-00
003-0308-00
003-0334-00
ι0
7 . Ch ec k /Ad ju st Trigger
( R 380)
O u tpu t
DC Level
P age
5-9
C h ec k: Voltmete r r ea d ing of 0 volts betwee n ΤΡ380
and gro und .
S H ORT-FORM PERFORMANCE
C HECK/CA L I BR ATIO N
5-7
Ch ec k : Voltmete r r eading of 0 volts betwee n ΤΡ360
a n d ΤΡ 460 .
(28) Resistor . F ixed, 1 mego h m, 1/2 o r 1/4 W, 1 % . Te kt ro n ix
Part No . 323-0481-00 fo r α 1/2 - W r esistor .
(Α) Han d le
( Β ) Nylon insert with recessed wire p in
(C) Nylon i nse rt wit h metal sc rewd r ive r
tip
B ala
C h ec k : No t r ace s h ift as VA R IA BLE k nob is
to its o u twa r d positio n .
Inte raction :
Part
(27) F lexible Τ co nn ector. P rovides matc h ed sig n al tra n sfe r
to bot h inp u ts . Te k tronix P art No . 067-0525-00 .
Descri p tio n
P age
C h ec k : No trace sh ift as VOLTS/DI V switc h is set
to eac h position .
(25) Ad a p ter . D u al binding post to BN C male . Te ktronix
No . 103-0035-00.
Pa r t
(26) A d apte r. BN C female to cli p leads .
No . 013-0076-00.
1 . C h ec k /Ad ju st Positio n Ce n te r ( R335) a n d
DC Balance ( R 173)
C h ec k : T race p osition ed wit h i n ±1 division of g r atic u le cente r and no trace s h ift as VAR IA BLE ( VO L TS/
DI V ) control is rotated .
r acy, ±1 % into 50 o h ms ; G R con n ecto rs . Te kt ronix P a r t No .
(23) G R-to- BN C male ada p te r.
0064-00 .
GAI N ADJ U STMEN TS
ρ
PROC E D URE
8 . Ch ec k /Adju st Gai n ( R 329 f r o n t panel)
Re qu i reme n t :
1 m V /div wit h
wave i n p ut.
Page
5-9
Fou
r divisio n s vertical d eflection at
4-m V pea k -to- p ea k 1- kH z s q u a r e-
T h is s h o rt-fo rm p roced ure is p r ovided to aid i n c hec k ing
t h e pe rfo rma n ce o r cali bration of t h e Ty p e 7Α 13 . It may be
used as α g u id e 6γ th e expe r ienced operator o r calibrator,
o r it may b e re p rod u ced a n d u sed as α p e rma ne nt reco r d of
calibratio n .
ρ
Perfo r ma n ce r eq u i rements th at are listed afte r th e wo r d
" Re qu irement" co rres pon d to th ose give n in Section 1 . Th e
tole ra n ces, w h en given after t he wo r d "C h ec k ", a re given as
α g u ide to c hec k th e Ty p e 7Α 13 fo r co rr ect ope r ation an d
are not i n stru ment s p ecification s.
PRELIMI NARY CO MPAR ISON VOLTAGE CHECK
& THERMAL COMPEN SATION ADJUSTMENT
9 . C h ec k Gate C u rrent
Page
5-9
eq u ireme n t : T race s hift s h o u l d not exceed 0 .2 divisio n (0.2 mV o r 0 .2 ηΑ ) as th e + or - I NPU T M od e
switc
h is set from G N D to AC . Α 50-o h m te rminatio n
Si
n ce t h e ste p nu mbe rs and titles u sed he re co r res po n d
is connected to t h e i nput bei n g ch ec k ed . C h ec k bot h
to those u se d in th e complete p roced u re, t h is p roced u re also
inp uts.
se rves as an in d ex to locate α ste p in t h e com p lete p roced u re .
Ty p e 7 Α 13, Serial No.
Calib r atio n Date
Cali brate d by
_
R
0 10. C h ec k Compa r ison Voltage
Page
5-10
C hec k : Wit h 10 volts app lied f rom t h e Ty p e 7 Α 13 Vc
O UT 0-10V j ac k to th e +I NPU T conn ecto r t r ace
d eflection sh o u ld b e 5 d ivisio n s with i n ±0 .5 d ivision w h en t he VO LTS/DI V switc h is set to 2 V and t he
+I NPU T switc h is set to DC .
5-3
Performance Check/Calibration-Type 7Α 13
11 . Check/A d just Common
Compensation (R167)
M ode
Thermal
P age 5-10
ATT ENU ATO R CO MPEN SATIO N ADJU STMEN TS
i
E] 18. Check/Ad just +INPUT Attenuator
Page 5-20
Compensation (C14, C8A, C88, C5A, C58)
Check : With 10 volts applied to the Ty pe 7 Α 13 nput
circuit via the V c p osition of the + or -INPUT
M ODE switch t he trace shoul d return quickly (within
one second or less) to graticule center within 0 .5 division or less when the app ropriate INPUT M ode switch
is set to GND . Check both n p uts .
i
INPU T RE SISTA N C E
& DC ATT ENU ATIO N
RATIO
ADJUSTMENTS
12 . Check/A d just +INPUT 10 Χ
Attenuator Ratio (R8G)
DC
P age
5-11
C heck : Trace shift shoul d n ot excee d ±0 .3 d ivision .
See p rocedure for d etails.
F~ 13 . Check/Ad just +INPUT 1 Χ DC In p ut
R esistance (R7)
Page 5-12
Check : F or α null indication with 5 mV on the voltmeter . See p rocedure for details .
Interaction :
R
e p eat ste p 12 .
Check : O p timum square corner an d flat to p within
±1 % or ±0 .06 d ivision for α 6- d ivision p eak-to-peak
dis p lay . R efer to Table 5-5.
E] 19. Check/Adjust -INPUT Attenuator
Page 5-23
Com p ensation (C34, C28A, C28B, C25A, C258)
Check : O p timum square corner an d flat to p within
±1 % or ±0 .06 d ivision for α 6-d ivision peak-to- p eak
dis p lay . R efer to Table 5-6.
CO MM O N
MODE
ADJUSTMENTS
Ε 20 . Check/Adjust Amplifier H igh-Fre q uency
P age 5-25
Common-Mod e R ejection (C171, C271, C162, C262,
C124, C224, C134, C234 and, if necessary, rea d just
R167)
R e q uirement : With t he VOLTS/DIV switch set at 1 mV,
check t he common mo d e d ifference signal p eak-top eak am p litude using the sequence p rovi d ed in the
following chart .
Sine-Wave
In p ut Signa l
Requirement
Ρ - Ρ Dis p lay Am p litu d e
CMRR
F] 14 . Check/Adjust +INPUT 100 Χ DC
P age 5-13
10 ΜΗτ, 1 V
1 mV o r less
1,000:1
Attenuation Ratio (RSE)
1 MHz, 10 V
1 mV o r les s
10,000
:1
C heck : Trace shift shoul d n ot excee d ±0 .3 d ivision .
See p rocedure for details .
F-1 15 . Check/A d just -INPUT 10 Χ Attenuation
R atio (R28G)
P age 5-13
Check : Trace shift should not excee d ±0 .3 d ivision .
See p roce d ure for d etails.
F-1 16 . Check/A d just -INPUT 1 Χ DC In put
R esistance (R27)
P age 5-14
Check : F or α null indication within 5 mV on the voltmeter. See p roce d ure for details .
Interaction :
R epeat
step 15 .
20 MHz, 1 V _
5 MHz, 2 V
100 kHz, 20 V
4 mV or less
1 mV o r less
1 mV o r less
Interaction :
Re p eat
250 :1
2,000 :1
20,000 :1
step 17 an d t hen ste p 20 .
0 21 . Check/Adjust Attenuator Common Mod e
R ejection at 100 Hz (R28G, R SE)
P age 5-27
Re q uirement : With α 100-Hz 50-volt s q uare-wave
signal a pp lied, peak-to-peak dis p lay am p litud e
shoul d be 0 .25 d ivision (25 mV) or less with VOLTS/
DIV switch set to .1 V ; 1/8 of α minor d ivision (25 mV)
or less with VOLTS/DIV switch set to 1 V . This is
equivalent to α C MRR of 2,000 :1 .
22 . Check/Ad just Attenuator Common Mode
Rejection at 10 kHz (C28A, C25A)
P age 5-28
W ith α 10-kHz 50-volt sine-wave signal
ap p lie d , peak-to-peak d is p lay amplitude should be
0.25 d ivisio n (25 m V ) or less wit h V OLTS/DI V switc h
set to .1 V ; 1/8 of α minor division (25 mV) or less with
VOLTS/DIV switch set to 1 V . This is equivalent to α
CMRR of 2,000 :1 .
Requirement :
H IGH-FREQ UEN CY CO MPEN SATIO N
AD JU ST MEN TS
0 17 . Check/Adjust H igh-Frequency
Compensation (R196, R432, R300, C187,
C113, C150, C250, C213; bot h in p uts)
Page 5-15
R 187,
C163,
System r isetime of 3 .5 nanosecon d o r
less for all V OLTS/DIV switch positions . Check both
in p uts .
TR IGG ER
& SIG NA L
C HECKS
R equirement :
Check : System aberrations u sing Table 5-3 in the
procedure as α g uide . Check both inputs .
(inclu d ing
A MPL I F I ER
α
trigger gain
RES PO N S E
check)
E] 23 . Check T rigger Am p lifier Gain a nd Ste p
Res ponse
P age 5-28
P e rfo rmance C h ec k /Calib ration-Ty p e 7 Α 1 3
C h ec k : U si n g t h e 6- d ivision signal am p lifier waveform
as α r efe re n ce, th e t r igge r wavefo rm d is p lay s h ou l d
be with in 15% (±0 .9 d ivisio n ) of t h e sig n al wavefo r m .
C h ec k : System r isetime, with t h e t rigger am p lifier
connected i n to t h e system, s h o u l d be abo u t 0 .1 of α
nanoseco nd slowe r t h a n t h e risetime o b tai n e d w h e n
t h e signal am p lifie r is co nn ected into th e system .
C h ec k : System aber r ation, wit h t h e trigger amplifier
connecte d i n to th e system, s h o u l d be no g r eater t h an
+4%, -4%, o r α total t h at d oes n ot exceed 6%
p ea k to p ea k .
r-] 24 . C h ec k Trigge r Am p lifier H ig h - F req u ency
Sine Wave R es p onse
P age 5-30
C h ec k : H ig h - F re qu ency respo n se s ho u ld not be mo re
t h a n -3 d B at 10O MHz .
F-1
25 . C h ec k Signal Am p lifier H ig h - Fr equ ency
R es ponse
P age
5-31
i r ement : H ig h fr equ e n cy res po n se s h o u l d
not more t ha n -3 d B at 100 MHz .
R eq u
be
0 26 . C h ec k Signal Am p lifier 5-MHz B a nd width P age 5-31
Si n e Wave R es p o n se
Up p e r fre q u e n cy res p onse limit s h o u l d
be -3 d B at 5 MHz wit h in 500 kH z .
Re q u ireme n t :
COMPARISON VOLTAGE ADJUSTMENTS
27. C h ec k /Ad ju st 10- Volt Calib r atio n ( R 573)
Page 5-32
R e qu ireme n t :
Null readings at +10 volts an d -10
volts wit h in α tolerance of ±0 .015 V ; eq u ivale n t to
±(0 .1 % of 10 volts p l u s 5 m V) .
E] 28. C h ec k /Ad ju st 1- Volt Calib r ation ( R 575)
P age 5-33
Null r eadings at +1 volt an d -1 volt
wit h i n α tolerance of ±0 .006 V .
R e qu ireme n t :
I n teraction :
F-1
Re
peat ste p 27 and t h e n ste p 28 .
29. C h ec k Com p arison Voltage L inea r ity
P age 5-33
Re q u i r eme n t : Meas u re t h e voltages at t h e V c O U T
to
0-1 Ο V j ac k an d com p a r e t h ese voltages to t h e V O L TS
Co un te r in d icatio n . Tole rance is _-L(0 .11% of V O L TS
Co u nte r indicatio n p l u s 5 m V) . R efer to Table 5-8 .
N OISE & OVERDRIVE RECOVERY CHECKS
0 32 . C h ec k N oise
Page 5-35
rement: 400 μ V or less at 1 mV /div ta n ge n tially
meas ure d .
R equ i
0 33 . C h ec k Overd r ive
R ecovery
Time
P age 5-36
R e q u i r emen t : T race ret u rns to wit h in 2 d ivisions (2 m V)
of gratic u le ce nter wit h in α r ecove ry time of 1 microsecond after th e removal of α +10-volt or -10-volt
pu lse; t race ret urn s wit h in 0 .5 division (0.5 m V) of
g ratic u le center wit h in α r ecovery time of 0 .1 millisecond . C h ec k bot h i n p u ts .
PERFORMANCE C HECK/CALIBRATION
PROCEDURE
General
T h e following p roce d u re is arra n ged i n α se qu e n ce w h ic h
allows t h e Ty p e 7Α 13 to be calib rated with t h e least i n te raction of ad ju stme n ts a n d reco nn ection of eq u ipment . T h e
step s i n w h ic h ad ju stments are ma d e are iden tified by t h e
symbol 0 following t h e title . I n st ru me n t pe rfo r mance is
ch ec k e d in t h e "C HEC K" pa r t of t he ste p before an a d ju stment is ma d e . T h e "AD JU ST" pa rt of th e ste p i dentifies t h e
poi n t w h e r e th e act u al ad justme n t is made' T h is p o r tion of
th e ste p is p rinted in red . Ste p s liste d in t h e "I NT ERACTIO N "
part of th e ste p may be affecte d by t he ad ju stme n t ju st p e rformed . T h is information is p artic u la r ly h el pfu l w hen only
α p a r tial calibration p roce d u re is p e rformed .
ΝΟΤΕ
To p revent recalibration of ot h er p arts of t h e i nstr u me n t w h e n performing α p a r tial calibration,
rea d ju st only if t h e tolera n ces given in t h e
"C HE C K" p art of t h e ste p are n ot met . H owever,
w h en p erforming α com p lete calibratio n , best overall p erformance is obtaine d if eac h a d ju stment is
made to t h e exact setting even if t h e "C HEC K" is
wit h i n t h e allowable tolerance .
In th e followi n g p r oced ur e, α test-equ i p me n t set u p p ict ure
is s how n fo r eac h ma j or g ro u p of c h ec k s a nd a d ju stmen ts .
E ac h ste p co n tin u es from t h e e qu i p me nt set u p and co n trol
settings u se d in th e p rece d ing ste p (s) un less ot h erwise n oted .
If only α p a rtial cali b ratio n o r pe r formance c h ec k is performed, start wit h t h e test e q u ipmen t set u p p rece d ing th e
d esi r e d p o r tion . External co n t r ols o r ad ju stments of th e Ty pe
7Α 13 refe r red
i n t h is proced ure a r e ca p italized (e .g .
POSITIO N) . I nternal a d ju stme n t n ames a r e i n itially capitalize d only (e .g . P ositio n Ce n te r ) .
All wavefo rms s h own in t h is pr oced ur e are act u al wave
fo rm p h otogra ph s ta k en with α Tekt ronix Oscillosco p e Came ra System a n d P ro j ected Gratic u le . T h e followi n g proced ure
C h ec k : One digit or less; see p roced ur e fo r details .
u ses t h e eq u i p me n t listed u n d er Test E q u i p ment R e qu i r ed .
If eq u i p me n t is s u bstit u ted, cont r ol setti n gs o r test eq u i pme n t
η 31 . C h ec k Elect r ical Zero
set up may need to be alte r ed to meet t h e req u ireme n ts of
Page 5-34
t h e eq u ipme n t u sed . Detailed operating instr u ctions fo r t h e
R e qu i rement: Com p a r e Vc elect r ical ze ro to gro u n d
test
e q u i p me n t are n ot given in th is pr oced ur e . If i n d ou bt
refe r ence . T r ace s h ift s h o u l d be 0 .5 m V ( 0 .5 d ivisio n )
as to t h e cor rect operatio n of any of t h e test eq u i p ment,
or less wit h t h e V O LTS/DI V switc h set to 1 mV .
refer to th e i nst ru ction man ual for t hat un it.
F-1
30 . C h ec k V olts Co un ter
M ec hanical
Bac k las h P age 5-33
5-5
Perfo r mance
Ch eck /Calib r atio n -Ty pe 7Α 13
refe rence
for setti n g t h e controls wh e n pe rformi n g α pa rtial
p roced ure . H en ce, th e power
an d R ; n - οο control settings are incl u ded eve n t h ou g h
th ese co n trols have al ready been p reset i n ste p s 1 and 6 of
t h is Pr eliminary Proced ur e .
P e rfo rmance Check/ Calibration
In d icato r Oscillosco p e
Foc u s
Β Intensity
Set fo r well-d efi n e d t r ace
a n d no rmal brig h tness (afte r
p l u g-in u nits are i nstalled
a nd power is t u r n ed on) .
Calibrator
4 mV
R ate (Calibrator)
Vertical Mode
H orizo n tal Mo d e
Β
T rigger
1 kH z
L eft
Β
Left Ve r t
So urce
Power
On (see Prelimina ry Proced u re, ste p 6)
Con trols not listed a r e consi d ere d less im p o r tant an d ca n
be set as desire d fo r p e rfo rming t h e proced ure .
Fig . 5-1 . Location of t h e R ; c 00 switch S10 on the Attenuator
boa rd .
Time
Base
Trigge ri n g
Level/Slo pe
ΝΟΤΕ
Positive slo pe
Mo d e
Ρ -Ρ A u to
It is ass u med t h at pe rformance is c h ec k e d wit h in α
Co u p ling
tem p erat u re range of 0 ° C to +50° C an d caliSo
u rce
bration at +25° C, ±5° C . Th e tolerances give n
in t h Set
is proced ur e are for t h is tem p erat u re range .
Position
H owever, if t h e proced u re is performed at some
ot he r tem p erat u re, c h eck to t h e a pp licable tolerMag n ifier
ances for t h at tem p erat u re range .
Time/D ίν
PREL I MI NA RY PR OC E D URE
1 . Set th e Ty p e 7 Α 13 R; - οο switc h, S10 (see
to t h e R ; = 1 ΜΩ (co u nte rcloc kwise) position .
F ig .
5-1),
2 . ( P erforma nce C h ec k only .) I n se rt t h e Ty p e 7Α 13 directly
into th e L eft Vert p l u g-i n com pa rtme n t of t h e i n dicato r oscilloscope .
3 . (Calibratio n Proced ure only.) Remove th e left side panel
an d bottom cover f r om t h e i n dicato r oscillosco p e . Remove t h e
si d e covers from t he Ty p e 7Α 13 . Insert th e Plug-in Extend e r
betwee n t h e Ty pe 7Α 13 and th e connecto r in the L eft Vert
pl u g-in com
p a rtment of th e indicator oscillosco pe .
10
4 . Inse r t t h e time-base un it i nto t he Β
pa rtment of t h e i n d icator oscillosco pe .
H o r iz
p l u g-i n com-
5 . Connect t h e oscillosco p e p ower co rd to t h e design center o pe r ati n g voltage fo r wh ic h t he oscillosco p e is wi r e d .
6 . T urn on th e oscillosco pe Powe r switc h . Allow at least
20 mi nu tes wa rm u p befo re c h ec k ing t h e system to t h e given
accu racy . Preset t h e va r io u s f ront- panel co ntrols to the settings give n n th e list t h at follows . T h is list is also u se d as α
i
Plug-in
region
AC
Int
so t h at t h e trace sta rts
at left side of graticu le
Χ1
0 .5 ms
Va r iable (Time/Div)
Dis play Mo d e
Pu s h e d in
Time B ase
Typ e 7 Α 13
CO MPA R ISO N V O LTAG E (Vc)
Pola r ity
VO LTS Counter (Digits set
by V c Selector switc h an d
F I NE co n t rol)
+I NPU T Mod e
-I NPU T Mod e
VO L TS/DI V
Pu s h b u ttons canceled
0 .000
GND
GND
mV
VA R IA BLE ( V O L TS/DI V )
CA L (cloc k wise, i n d etent)
Vc R A N G E
VA R B A L
M i d range
PULL VA R F O R X10
5 MHz
Βω
POSITIO N
R; - οο (i n ternal switc h ,
S10, see
F ig .
Pus hed in
5-1)
M i drange
R ; = -1 ΜΩ (see Prelimi n a ry Proced u re, ste p 1)
Pe rfo rmance C h ec k /Calibration-Ty pe 7Α 13
50-011 11)
Termination
ig . 5-2 . Equ i p me n t
text .)
F
re qu i r e d whe n
DC A N D
42-Inch
50-ohm ΒβΙ C
Coaxial Cab le
using ste ps 1 t hr o u g h 9 as α calib ratio n pr oce dur e .
( P erformance C h ec k Only)
ΝΟΤΕ
Ste p s 1 t h ro u g h 7 are Calibration P roce d u re Only
ste p s . F or α p erformance c h ec k p roced u re, go to
Section 2, O p erating Instr u ctions, p age 2-3, and
p erform t h e Front P anel Ad ju stme n ts p roced u re for
t h e VA R B A L, Χ 10 B A L an d ST EP ΑΤΤΕΝ B A L adju stments . T h en start wit h ste p 8 (C h ec k /A d ju st
Gain) in t h is P erformance C h ec k /Calibration p roce d u re to co n tin u e c h ec k ing t h e p erformance of t h e
Typ e 7A 13 .
T h is is α p relimi n ary ad ju stment . It is not necessary
t h at t h e trace a pp ear exactly at gratic u le ce n ter at
t h is time . F inal a d ju stment for R 335 occu rs in ste p
4 . Leave t h e front p a n el P OSITIO N control at mi d
range u ntil ste p 7 h as been com p lete d .
e . Rotate th e VA R IA BLE (VO L TS/DI V ) cont rol past t h e
d ecent to its f u lly co u nterclockwise position . N ote th e positio n of th e trace.
f.
C h ec k /Ad ju st Position Center and DC
B alance
0
α . Test e q u i p me n t setu p is s h own in F ig . 5-2 .
b . C h ec k that t h e co n trols are set as give n in t h e P reliminary P roced u re . In a dd ition, p reset t h e Ty p e
7A13
X10 B A L
and ST EP ΑΤΤΕΝ B A L front p anel ad ju stme n ts to t h e cente r
of t h eir range .
ι . C HE C K-For trace positioned wit h i n ±1
gratic u le cente r .
See
d . AD JU ST-If t r ace does not a p pear on t h e scree n or
with i n ±1 d ivision of gratic u le ce n ter, ad ju st th e P ositio n
Cen ter control R 335 (see F ig . 5-3 Α) to p osition th e t race to
gratic u le ce n te r.
GAI N AD JU ST MEN TS
ΝΟΤΕ
1.
(Th e p erfor ma n ce check begi n s wit h step 8 .
d ivision of
C HEC K- F or no trace s h ift.
g . ADJU ST-If t h e t r ace s h ifts as t h e VA R IA BLE ( VO L TS/
DI V ) control is rotated , n ote t h e d irectio n of t h e s h ift. R et u r n
t h e control to its CA L (cloc kwise, in d ete n t) p ositio n. If th e
trace s h ift is up, a d ju st t h e DC ΒαΙ control R 173 (see F ig . 5-3 Β )
slig h tly in α co u nte r cloc k wise d irectio n u ntil t he trace is p ositio n ed slig h tly above t h e locatio n noted in ste p le . If t h e
s h ift is d ow n , a d ju st R 173 slig h tly in α cloc k wise d i r ection to
p osition t h e trace slig h tly below t h e locatio n n ote d in ste p le .
h. R e p eat t h e p roced u re i n t h is ste p u ntil t h e trace d oes
not sh ift as t h e V A R IA BLE ( V O LTS/DI V ) control is r otate d
bac k and fort h t hro u g h o u t its r a nge of r otatio n .
5-7
P e r fo r mance
C h ec k /Calibration-Typ e 7Α 1 3
c. C HE C K-F o r no trace s h ift as t h e V A R IA BLE k nob is
to its o u twar d p osition .
p u lle d
d . AD JU ST-If t h e trace h as s h ifted, note t he di rection of
t h e s h ift . Pu s h t h e VA R IA BLE k nob to its inward position . If
t h e t race s h ift is up, a d ju st t h e internal Χ 10 DC ΒαΙ control
R288 (see F ig . 5-3 Β ) in α slig h tly co u ntercloc k wise directio n . If
t he trace s h ift is d ow n , ad ju st R288 slig h tly cloc k wise .
e . Re p eat t he p roced u re given in ste p s 2b th ro ug h 2 d u ntil
t h ere is no trace s h ift as th e VA R IA BLE k nob is pu lled o u t a n d
p u s h ed in .
ΝΟΤΕ
Wh en performing ste p 2, it may be necessary to
read ju st t h e Position Center control R 335 to center
t h e trace on t h e C R T screen .
of Οιιιρω Ι) ο eι r λ .
3.
C h eck /Ad ju st Ste p Atten u ator DC
B alance
Ο
α . C h ec k th at t h e fro n t panel ST EP ΑΤΤΕΝ B A L control is
set to mi d ra n ge a n d th e VA R IA BLE (V O LTS/DI V) knob is
p u s h e d in .
b.
N ote
th e p osition of t h e t r ace .
ι . Set t h e VO LTS/DI V switc h to 50 m V .
d . C HE C K- F or no trace s h ift .
e . If t h e trace s h ifts, note t h e direction of t h e s h ift an d
ret u rn t h e V O LTS/DI V switc h to t h e 10 m V position .
f . AD JU ST-If th e trace s h ifted up, a d ju st th e inte r nal
Ste p Atten DC ΒαΙ co n trol R307 (see F ig . 5-3 Α ) slig htly cloc k wise . If t h e t race s h ifted d own, a d ju st R307 slig htly co un te r cloc kwise.
Fig . 5-3 . A dju stme n ts a nd test point locations use d when followi n g
the DC and Gain A dju stme nts p roce d ure .
i . C HE C K-As α final c h ec k , set t h e VO L TS/DI V switc h to
1 m V . Re p eat ste p s le t h ro u g h lh u ntil t h ere is no trace s h ift .
ΝΟΤΕ
(ste p s 1 e t h ro u g h 1 i) , it may be necessary to rea d ju st t h e P osition Center control R 335 to ret u rn t h e
trace to gratic u le center . Do not use t h e POSITION
control . Instea d , use t h e Position Center control
R 335 for t h is p u r p ose .
C h ec k /Ad ju st
Χ 10 DC
Balance
C h ec k /Ad j u st
Ad ju stment)
P ositio n
Center ( Final
Ο
α . Set t h e VO L TS/DI V switc h to 10 m V .
b . C h ec k t h at t h e front p anel POSITIO N control is set to
mi d range .
Ο
α . Set t h e VO LTS/DI V switc h to 10 m V.
b . C h ec k t h at t h e VAR IA BLE control is set to t h e CA L positio n . Pull th e VA R IA BLE ( V O LTS/DI V ) knob o u tward to t h e
X10 Vc position .
5-8
If trace s h ift is note d w h en setting t h e VO LTS/DI V
switc h to t h e 1, 2, a n d 5 mV positions, rec h ec k t he internal
Χ 10 DC ΒαΙ a d ju stment R288 as described in ste p 2 . R e p eat
ste p s 1 t h ro u g h 3, as n ecessary, to obtain p ro p er DC balance .
4.
D u ring t h e DC ΒαΙ ad ju stment R 173 proce d u re
2.
g . Re peat t h e p roce d u re in t h is ste p un til t h e t race d oes
not s h ift in any position of t h e VO L TS/DI V switc h ; p artic u larly, for any p osition from 10 m V to 5 V .
c . A d ju st t h e internal Position Center control R335 so t h at
t h e trace coincides with t h e gratic u le ce n terli n e .
d . Connect α DC voltmeter (V O M), set to its lowest voltage
ra n ge, from ΤΡ 360 to ΤΡ 460 (see F ig . 5-3 Α) . Th ese test p oints
are connecte d to t h e Ty p e 7Α 13 signal o u tp u t .
e . C HE C K - F or α voltmeter rea d ing of 0 volts .
P erfo r mance Chec k /Calibration-Typ e 7Α 13
f . ADJUST-To obtain α 0-volt rea d ing, read ju st t h e internal P ositio n Cen ter co n t rol R335 . Th is is t h e fi n al a d ju stme n t fo r R 335 .
g . Disco n nect t h e voltmete r .
EMENEEMEME
10ι ιιιιιιι,
MENNEEMENE
C h ec k /Ad j u st Trigger DC
5.
Balance
Ο
α . Connect t h e DC voltmete r (V OM), set to its lowest voltage ra n ge, from ΤΡ 380 to ΤΡ480 (see F ig . 5-3 Α ) . T h ese test
p oints are con n ected to th e Ty p e 7 Α 13 trigger o u t pu t .
4 Di ν 9
Peak-to-Peak
b . C HE C K -For α voltmeter rea d ing of 0 volts .
EMENEMENEW
c . ADJUST-To obtai n α 0-volt read ing, a d ju st t h e Tr ig DC
B ala n ce co n t r ol R 371 (see Fig . 5-3Α) .
MENEEMENNE
d. Disco n nect th e voltmeter.
e . I N T ER ACTIO N- Re p eat ste p s 4 and 5 as often as necessary to obtain α 0-volt r ea d ing at t h e signal a n d t h e trigge r
o u t p u t test p oi n ts .
6. C h ec k /Ad ju st Signal O u tp ut DC
Level
Ο
α . W it h t h e DC V oltmeter (VO M) set to its lowest voltage
range, connect t h e voltmeter f r om ΤΡ360 to c h assis gro u n d .
ΤΡ 360 (see F ig . 5-3 Α ) is th e signal o u t p u t test poi n t . Fo r α
c h assis gro u nd con n ection, u se t h e test p oint located at t h e
u pp er center portion of t h e O u t p u t board (see Fig . 5-3 Α ) .
b . C HE C K - F or α voltmeter rea d ing of 0 volts .
ι . ADJUST-To obtain α 0-volt rea d i n g, a d ju st t h e Signal
DC L evel control R360 (see F ig . 5-3Α) .
d . Disco nn ect t h e voltmeter.
e.
I N T ERACT I O N :
Re p eat
7. C h eck /Adj u st Trigger O u tp u t DC L evel
Ο
a . W it h t h e DC voltmeter (V O M) set to its lowest voltage
range, connect t h e voltmeter betwee n ΤΡ380 (t rigger o u tp u t
test point) an d gro u n d . U se the grou n d test p oint locate d in
th e u pper center area of t h e O u t p u t boa rd (see F ig . 5-3Α ) .
b . C HE C K - For α voltmeter reading of 0 volts .
c . ADJUST-To obtai n α 0-volt rea d i n g, a d ju st th e T r ig
DC L evel co n t r ol R380 .
d. Disconnect t h e voltmeter .
e . I N T ER ACTIO N :
s.
Re p eat
Fig .
5-4 . Wavefo rm d is p lay obtained
at 1 m V / div. Swee p rate : 0 .5 ms/div .
s h owing
correct vertical gain
c . CH E C K-C R T d is p lay for exactly 4 d ivisions of vertical
d eflection (see F ig . 5-4) .
d . AD JU ST-T h e f r o n t p anel GAI N cont rol
exactly 4 divisio n s of ve r tical d eflectio n .
( R 329) for
ΝΟΤΕ
P erformance C h ec k : Since t h e Gain a d ju stment is
an external control, t h is control may be ad ju ste d
as p art of t h e p erformance c h ec k .
Disconnect t h e calibrator signal .
9. Chec k Gate C u rrent
α . Connect α 50 o h m termi n ation to th e +I NPU T connecto r .
b . Set th e V O L TS/DI V switc h to 1 m V .
c . Check t h at th e +I NPU T an d -I NPU T
are set to G N D .
Mode
switc h es
d. U sing t h e P OSITIO N control, p osition t h e trace to cointi d e with t h e gratic u le cente rline .
e . Set th e +I NPU T switc h to AC .
f . C HE C K-Amo u nt of trace d eflectio n should not exceed
0 .2 d ivision (0 .2 m V ) . T h is is eq u ivalent to 0 .2 ηΑ or less
(0.2 m V - 1 ΜΩ - 0 .2 ηΑ) .
ste p 5 .
Ch eck /Ad ju st Gain
Ο
a . Apply t h e 4-m V pea k -to- p ea k sq u a r e wave from t h e ind icato r oscillosco p e Cal o u t pu t con n ector t h ro u g h α 50-o h m
coaxial cable to t h e Ty p e 7 Α 13 -{-INPU T connector.
b . Set t h e Ty p e 7 Α 13 controls as follows :
+I NPU T M o d e
0
V O L TS/DI
1
V
NEENEEMENE
e.
ste p 4 .
ι
DC
mV
Center
P OSITIO N
t h e d is p lay
g . Move t h e 50 o h m te r mination from th e +I NPU T cannector to t h e -I NPU T co nnector .
h . Set t h e +I NPU T
t h e trace is centere d .
i.
Set th e -I NPU T
M ode
switc h to G N D an d c h ec k
Mo d e
switc h to AC .
t h at
j.
C HE C K-Amo u nt of trace d eflection s h o u l d not exceed
.2 d ivision .
k.
R emove
t h e 50 o h m termination .
5-9
Perfo rmance Chec k /Calibration-Ty pe 7Α 13
F ig .
5-5 . I n itial set up
nee ded .
PREL I M I N A RY
s h owi n g
equipment required for performi n g ste p s 10 a n d 11 .
COMP A R ISO N
V OLTAG E
C HE CK
& T HERM AL COMPEN SATIO N AD JU STMEN T
Control
Settings
Wh en pe r fo r ming α com p lete p roced u re, c h ange t h e following control settings a n d p roceed with ste p 10.
Ty p e 7Α13
-I NPU T
M ode
V O LTS/DI
2
V
V O LTS Co u nter
GND
V
999 .9 p l us 1 digit to obtain
α 900 .0 read ing a n d p rovi d e
10 volts at t h e Vc O U T
0-10 V j ac k .
If t he r emaining cont r ols n eed to be c h ec k ed for p ro per
settings o r if ste p 10 is bei n g u sed as α starting point fo r
p a r tially calibrating th e Ty p e 7Α 13, refer to t h e P reliminary
Procedure .
10 .
C h ec k Com p arison
V oltage
For
α pe r fo r ma n ce check t he Plug-in
E xte n de r
is n ot
c . Con n ect 5-inc h p atc h cord f rom t he re d bin d ing p ost on
the ada p ter to th e V c O U T 0-10 V j ac k .
d . U sing t h e Ty p e 7Α 13 POSITIO N control, p ositio n t h e
t race 3 d ivisio n s below gratic u le ce n ter .
e . De p ress th e + P ola r ity p u s h b u tto n a n d set t h e +I NPU T
switc h to DC .
Mode
f . C HE C K-T h at t h e t race is d eflecte d 5 d ivisio n s from its
original p osition with in α tole rance of ±0.5 d ivisio n .
ΝΟΤΕ
T h is is α q u ic k c h ec k to be s ur e t h at 10 volts will
be a vailable for u se i n p erforming ste p 11 . T h e
tolerance is given as α g u i d e to c h ec k for correct
i n str u me n t o p eration an d is not an i n str u ment s p ecification .
g . Set t h e +I NPUT
M od e
switc h to G N D .
h . Discon n ect t h e p atc h cor d a n d t h e d u al bi n d ing p ost
a d apter .
11 .
C h ec k /Ad ju st Common
Com pensation
Mo d e
Thermal
Ο
α . Test eq u ipment setu p, wit h connectio n s made at comh
α . Set t h e V O LTS/DI V
1 m V . C h ec k th at t h e
p letioswitc
n to
of ste p 1 Oc, is s h own i n F ig . 5-5 .
V O LTS Co u nter is set to read 9 .999 p l u s 1 d igit (9 .000 or
b. Connect α d u al bin d i n g p ost to t h e +I NPU T co nn ector.
e q u ivalent to α V c o ut p u t of 10V) .
5- 1 0
P e r formance C heck /Calib r ation-Type 7Α 13
b . Using t h e P OSITIO N control, p osition t h e trace to coinci d e wit h th e graticu le cente r li n e .
c.
Set th e +I NPU T Mod e switc h to V c .
d . C HE C K -Set t h e +I NPU T Mode switc h to G N D a n d
observe t h at t h e trace ret u r n s q u ic k ly (with in o n e second or
less) to gratic u le center wit h in α tolerance of 0 .5 mV (0.5
d iv) or less .
ΝΟΤΕ
T h e tolerances given in t h e C HEC K an d AD JU ST
p roced u res for ste p 11 are g u i d es to c h ec k t h e
instrument for correct o p eratio n an d are not instrument s p ecifications .
ε . AD JU ST-If tole ra n ce is exceed e d , ad ju st t h e Common
ΒαΙ co n trol R 167 (see F ig . 5-6) for q u ic kest ret u rn of
t race (with mi n im u m final trace d rift) to wit h in 0 .5 m V from
gratic u le center .
Mod e
f.
De p ress t h e - P olarity pu s h b u tton an d set t h e +I NPU T
Mod e switch to V c .
ί
g . C HE C K-Set t h e +I NPU T M od e switc h to G N D and
observe t h at t h e t r ace ret u rns q u ic k ly (as desc r ibed in ste p
12d ) to gratic u le ce n te r wit h in α tole rance of 0 .5 m V o r less .
h. AD JU ST-If tolerance is exceed e d , rea d ju st t h e Com-
mo n Mod e ΒαΙ co nt rol
R 167 .
ΝΟΤΕ
It may be necessary to com p romise t h is a d ju stment
setting
w h en p erforming ste p s 1 1 b t h ro u g h
1
1 h.
T h e trace s h o u ld ret u rn q u ic k ly to its origi n al p osition wit h in α tolerance of 0 .5 m V or less wit h t h e
P olarity p u s h b u ttons in t h e + or - p ositio n s .
T h is is α p reliminary a d justment p roce d u re . Final
a d ju stment of R 167 occ u rs i n ste p 20 .
i.
C h ec k t h at t h e +I NPU T Mod e switc h is set to G N D .
C HE C K- U sing ste p llb t h ro u g h lld and ste ps llf
th ro u g h 11g as α g u i d e, c h ec k t h e -I NPU T circ u it of th e
Ty p e 7Α 13 . T h e trace s h o u l d ret u rn g υί c k 1y to gratic u le
center within α tolerance of 0 .5 m V or less as th e -I NPU T
M od e switc h is set f rom V c to G N D fo r eac h Vc Polarity
switc h position .
j.
I NPU T RE SISTA N C E 8ε DC ATT ENU ATIO N
RATIO AD JU ST MENTS
NOTE
Γ
P erformance C h ec k Only :
Control
Go to ste p 17 .
Settings
When p erformi n g α com p lete calibration p roce d u re,
c h ange d
t h e following control settings an d procee d with ste p
12.
F ig .
5-6 . Pa rtial view of I npu t boa rd showing a dj ustment location
fo r ste p 11 .
Polarity
-I NPU T Mode
V O LTS/DI V
Pu s h b u ttons canceled
GND
.1 V
If t h e remai n i n g controls n ee d to be c h ec ke d for p ro p er
settings or if ste p 12 is being u se d as α starting point for
p a rtially' calibrati n g th e Ty p e 7 Α 13, refe r to t h e P reliminary
P roce d u re exce pt as follows :
VO LTS Co u nter
99 .99 p l u s 1 d igit
(to rea d 90 .00)
NOTE
T h e tolerances given in t h e C HE C K an d AD JU ST
p roced u res for ste ps 12 t h ro u g h 16 are g u i d es to
c h ec k t h e instr u ment for correct o p eration and are
not instr u ment specifications .
12 .
C h ec k /Ad ju st +I NPU T 1O X
Atten uation Ratio
DC
Ο
α , Test e q u i p ment set u p , with co nn ections mad e at comp letion of ste p 12g, is s hown in Fig . 5-7.
b . Co nn ect α 1-mego h m 1 % resistor from t h e Pr ecision
DC Divid er V oltage O u t p u t connector to t he P recision DC
Divi d e r Grid connector .
c . Connect α 6-inc h p atc h cord from the Ty p e 7Α 13
+I NPU T connecto r to th e Precision DC Divi d e r V oltage Input connector (see F ig . 5-8) .
. Co n nect α 6-i n c h p atc h cord from t h e Ty p e 7Α 13 Grid
connecto r to th e P recision DC Divi d e r Grid connector .
P erfo r mance C h ec k /Calibration-Typ e 7Α 13
Indicator
osci l l οsco R ε
P recision
D C Divider
Dual-Binding
Post A dapter
F ig .
5-7 . I n itial set up s h owi ng equipment required fo r p e rfo rmi n g calibration ste ps 12 t h roug h 16 .
ced ure, go to ste p 16 Α .
e . Disconnect t h e Ty p e 7 Α 13 brown-on-white wire from
pi n connector "0'' located on th e O u t p u t board (see F ig .
5-9) . T h is wire d isconnects t h e V c s u pp ly locate d on t h e
O u t p u t boa rd from th e V c in pu t circ u it on t h e Atten u ator
boa rd b u t d oes not d isconnect t h e V c s u pp ly from t h e V c
OU T 0-10 V j ac k .
f . Connect α 6-inc h p atc h cord from t h e P recision DC
Divi d e r to t h e free en d of th e brown-on-white wire .
CA U TIO N
U se care w h en ma k ing t h is connection to p revent
t h e brown-on-white wire from to u c h ing c h assis
gro u nd or becoming d isconnecte d from t h e p i n
connector on t h e Atten u ator boar d .
To conti nu e th e
Pe rforma n ce
C h ec k pro-
NOTE
T h e in p u t im p edance of t h e P recision DC Divider
lowers t h e 40- V DC calibrator o u t p u t to a pp roxito tely 15 volts . T h is is t h e voltage t h at is a pp lie d
t h e -F INPU T connector . T h e voltage a pp lie d
to t h e brown-on-white lea d is exactly one-tent h
of t h e a pp lie d voltage at t h e -{-INPU T con n ector .
h . AD JU ST-If t race s h ift excee d s ±0 .3 division, leave
th e +I NPUT Mod e switc h in th e DC positio n an d a d ju st
R8G (see F ig . 5-10) so th at t h e t r ace is wit h in t h e given tole r ance . R ec h ec k for no t r ace s h ift as t h e +I N PU T switc h is
set from V c to DC . If n ecessary, rea d ju st R 8G .
i . Sim u ltaneo u sly set bot h +I NPU T a nd -I NPU T M o d e
g . Connect α 42-inc h 50-o h m coaxial cable to t h e in d icato
switc
r oscillosco p e Cal o u tp u t connector . Connect α cli p
h es to G N D .
lea d a d a pter to th e ot h e r en d of th e cable . Connect t h e
j.
Disconnect t h e P recision DC Divi d er from t h e Ty p e
red lea d from t h e cli p lea d a d a pter to t h e P recision DC
7 Α 13 b u t leave all ot h er connections un altered .
Divi d er V oltage I n p u t con n ector an d connect th e blac k lea d
t o t h e Precision DC Divi d er Grid connector .
k . L eave t h e brown-on-white wire to p in " Ο " on t h e O u th. Set t h e ind icator oscillosco pe Calibrator Volts switc h
p u t board d isconnected .
to 40V a nd t h e Rate (Calibrator) switc h to DC V olts .
i . Set th e +I NPU T an d -I NPU T M od e switc h es sim u lta n eo u sly to V c . U sing t h e P OSITIO N co n trol, position th e
trace to gratic u le center .
j.
C HEC K-Set t h e +I NPU T Mo d e switc h to DC and note
t h e trace s h ift. Amo u nt of trace s h ift s h o u l d n ot excee d
±0 .3 d ivision .
5- 1 2
13 .
C h ec k /A d just + I NPU T 1 χ DC In p u t
Resistance
α . Connect t h e
co n nector .
d u al
Ο
bin d ing p ost a d a pter to t h e +I NPU T
Performance Check/Calibration-Ty pe 7Α 13
r-
k . Disconnect the voltmeter .
Ι.
M ode
Cancel the + P olarity pushbutton and set the +INPUT
switch to GND .
m . Disconnect resistor an d bind ing p ost a d a pter.
14. Chec k/A d just -1-INPUT 100X DC
Attenuation
Ο
Ratio
α . Reconnect the P recision DC Divi d er in the same manner
as was described in ste p 12 and illustrated in F igs . 5-7 and
5-8 . B e sure the 1 megohm 1 % resistor is connecte d from the
P recision DC Divi d er V oltage . Outp ut connector to Grid .
σ ctar
b . Set the V OLTS/DIV switch to 1 V .
c . Set t h e Precision DC Divi d er switch to 100 :1 .
d . Simultaneously set both +INPUT an d -INPUT
switches to V c .
M ode
e . U sing the P OSITION control, position the trace to coincid e with graticule center.
P recision
DC Divider
J
1 Μ
1%
Resistor
Lack
Lead
g . ADJUST-If the tolerance is exceed e d , leave the + ΙΝPUT Mo d e switch in t he DC position an d a d just R 5E (see
F ig . 5-10) for minimum trace shift .
Fig . 5-8 . Closeup view of the Precision DC Divider interconnections
to t he Ty p e 7A 13 .
Γ
b . R emove the 1 megohm 1 % resistor from the Precision
DC Divi d er. Connect the resistor between the re d bind ing
p ost on the a d a pter an d t he V c OUT 0-10 V jack on the
Ty p e 7 Α 13 .
c . De p ress th e + Polarity p u s h b u tto n an d set t h e +I NPUT
Mod e switc h to DC .
F_ '
f. CHECK-Set the +INPUT M od e switch to DC an d note
the trace shift . Amount of trace shift should not excee d
±0 .3 d ivision .
ΝΟΤΕ
15 . C h ec k/Ad just -I NPUT 10 χ Attenuation Ο
R atio
ΝΟΤΕ
No a d justment is p rovi d e d for the -INPUT 100 Χ
DC atten u ation ratio .
α . Sim u ltaneo u sly set bot h +I NPUT an d -I NPUT switc h es
to G ND . Set t h e V O LTS/DI V switc h to .1 V.
b . Move th e p atc h co rd from t h e +I NPUT connector to
When p erforming ste p s 13 ε t hrough 13i in t his
the -INPUT connector . Leave the other en d of the p atch
proce
d ure, it is normal for the trace to be d eflecte d
cor
d connecte d to the P recision DC Divi d er V oltage In p ut
u p ward off the CRT .
connector .
d. P reset the P recision DC Voltmeter to measure a pp roximately +5 volts .
e . Connect the P recision DC V oltmeter between the r e d
(+) an d the black (ground) bin d ing p osts on the a d a p ter.
f.
Set the voltmeter for α null read ing .
g . Set the V OLTS/DIV switch to 50 mV.
h . CHECK-For α null in d ication within 5 mV on the voltmeter.
i . ADJUST-If α null rea d ing is not obtained, a d just R7
(see Fig . 5-10) for α . ηυΙΙ in d ication on the Precision DC V oltmeter.
j.
I NTERACTION-If
R7
was a d justed, re peat ste p 12 .
c . Set the
P recision
DC Divider switch to 10 :1 .
d . Simultaneously set both +INPUT and -INPUT switches
to Vc .
e . U se the
f.
c heck
POSITION
control to center the trace.
CHECK-Set the -INPUT M o d e switch to DC an d
t hat the trace shift d oes not exceed ±0 .3 division .
g . ADJUST-If trace shift exceeds ±0.3 d ivision, leave
the -INPUT M o d e switch at DC and a d just R28G (see F ig .
5-10) for minimum trace shift .
h. Disconnect the P recision DC Divi d er from the Type
7Α 13 a n d in d icator oscillosco p e . Reconnect the brown-onwhite wire to p in "0" on the out p ut board .
5- 1 3
Pe rfo rmance Ch ec k /Calib ration-Ty pe 7Α 13
5-9 . Pa rtial view of O u tpu t boar d s h owing t h e V c input wi r e
a nd t h e Vc out pu t pin co nnector location .
Fig . 5,10 . Atte nuato r boar d a dju st m e n t locations u sed in the DC
Input Resistance and Atte nuato r Ratio Ad ju stme n ts proce du re .
C h eck /Adju st -I NPU T 1 χ DC In pu t
R esistance
e . Ch ec k t h at t h e P recision DC V oltmeter is set to measu re +5 volts .
F ig .
16 .
Ο
f . Connect th e P recisio n DC Voltmete r betwee n t h e red
(+) a n d th e blac k (-) bi n d ing p osts on t he a d a pter .
α . Set t h e front p anel control as follows :
Indicator Oscillosco p e
Calibrator
Rate (Calibrato r)
-I NPU T
M ode
g . Set t h e voltmeter for α null rea d ing .
4 mV
h . Set th e VO L TS/DI V switc h to 50 m V .
1 kH z
i . C HE C K-F or α null indication wit h in 5 mV on t he voltmeter .
Type 7 Α 13
G ND
b . Connect t h e d u al-bind ing post a d a p ter to t h e -I NPU T
connector.
c . Connect t h e 1 mego h m 1 % resistor between t h e re d
bi nd ing post on t h e ada p ter and t h e V c O UT 0-10V j ac k
on t h e Ty pe 7Α 13 .
d. Set t h e Polarity switch to + and t h e -I NPU T
switc h to DC .
Mo d e
ΝΟΤΕ
Wh en p erforming ste p s 16d t h ro u g h 16 k , th e trace
will be deflected downwar d off t h e C RT .
j . AD JU ST-If α null rea d i n g is n ot obtai n e d , a d ju st R 27
(see F ig . 5-10) for α null i n d ication on th e P recision DC V oltmete r .
k . I N T ERACTIO N -If
Ι.
R27
was a d ju sted , re peat ste p 15.
Disconnect th e voltmete r.
m . Set th e Ty p e 7Α 13 controls as follows :
+ P olarity
Pu s h b u tton canceled
V O LTS Co u nter
0 .000
-I NPU T
GND
Mod e
η . Disconnect t h e resistor a n d bi n d ing post a d a pter .
Pe r for mance Chec k /Calib ration-Typ e 7Α 13
GO ns
C Ιια r α e Cable
Polarized
Viewer or
View ing Hood
Inrlicator
1 ΠΧ
Attenuator
squate "lave
Ge n erator
5-ns
50-ohm
Coaxial
Cable
5-n ;
5 0 ο 1171
Coaxial
Cable
Fig . 5-11 . I n itial set u p showing eq u i pment r equ i re d fo r performing th e high-frequency com p e n sation calibration
p l ug-in exte nd e r is not neede d for α p e rfo rmance c h ec k .
H IG H-FRE Q UEN CY CO MPEN SATIO N
ADJU STMEN TS
Control
Settings
+I NPU T
-I NPU T
Mod e
Mo d e
Ty pe 7 Α 13
DC
GND
V10
O L TS/DI V
mV
BW
FULL
Time/Div
Time Base Plug-in
.05 μτ
If t h e remaining controls n ee d to be c h ec k ed fo r p ro per
settings o r if ste p 17 is bei n g u sed as α starti n g p oint fo r
an d cd i u stme n ts. The
p a r tially calibrati n g t h e Ty p e 7 Α 13, refer to th e Preliminary
Procedure .
17 .
Wh en p erformi n g α com p lete p r oced u re, c h ange t h e followi n g control settings and pr oceed wit h ste p 17 .
ch ec k s
Chec k /A d ju st H ig h - F re q u ency Com p en- Ο
sation (both inp u ts)
α . Test e q u i p ment set up, wit h co nn ections ma d e at comF ig . 5-11 .
p letion of ste p 17e, is s h own in
b . T u rn off t h e indicato r oscillosco pe . R emove th e P l u g-in
Exte n d er an d insert th e Ty p e 7Α 13 d irectly i n to t h e in d icato r
oscillosco p e L eft V ert p l u g-in com p a rtment . T urn on th e i n -
d icator oscillosco pe .
c.
Set t h e Ty pe 109 Pu lse Generator controls as follows :
Am p lit u d e
9
V oltage
5 .0
Range
Pu lse P olarity
Powe r
On
Performance C h ec k /Calibration-Typ e 7Α 13
d. Connect α 3 .45-ns c h a rge line to th e Ty p e 109 50t2
C h g L ine 1 connector . Connect α 5- n s coaxial from t h e Ty pe
109 50 Ω C h g L ine 2 connecto r to t h e Ty p e 113 Delay Cable .
S ΙορίηgCorner
(see text)
==
"si,
e Pulse
Lr
MMd10MMMMEM
MEMMEMEMEM
MEEMMEMEME
MEN
ENO
e. F rom th e Ty p e 109 50 Ω Out pu t connector, connect t h e
signal t h ro u g h α 10 Χ atten u ator, 5-ns coaxial cable an d α
50-o h m termination to t h e Ty p e 7Α 13 +I NPU T connector .
Connect all items in t h e given se q u ence (see F ig . 5-11) . R emove th e C RT lig h t filter and mo u nt α p olarize d viewer o r α
viewi n g h ood to t h e in d icator oscillosco p e bezel .
f. U se t he indicator oscillosco p e C R T co ntrols, t h e Ty p e
7Α 13 P OSITIO N control, an d t h e Ty p e 109 Am p lit u d e control
to obtain α d is p lay 8 d ivisio n s i n am p lit u d e as s h ow n in F ig .
5-12 Α .
Narrow
®,
u se
ΝΟΤΕ
( Α ) Dual p ulse w aveform d isp laye d at α sw eep rate of .05 μs/d iv .
a"®W4ιωω 1f
ΜΕ
"®Ν"M ΙΜΕ
o
ιι.ιΙ Ι& ι~ιιι
INN
El
Ρυί7 ~~
Pu lse;
div MEN
_P ]
FiN
IREg
Narro~ Ise :
6 4
d ίν
Ρ-Ρ
higher
ΜΕΝιιπΜΕ m®®"1
__
0
MENMEEMMEN
1 0°/ο Ρ oi n t
Μ
ιωt
~Ν
lυ ι
ns οr less illill!
( Β ) Check i ng risetime u si ng th e n arro w p ulse tec hn i que or th e
10%-to-90% meth o d . Sweep rate is 2 ns/d iv .
~
ρ
ϊ
Am plitude
n
~Ιϋ~ιηϋ(i~
°'~
ds
Point
ί
NIM
ME
Time α esuse d w h e n es
Ι////~///~ΙΛ! tablish i n g the
~tΛ1
-d i v ision refΒ ce α mρΙί MΙ N eren
ΜΕ/ΟΝ~"1 Mt~
ιι
ιιαι
IME
MM
"~~ Am p li
_®®
{C) C h ec k i n g p ea k -to-pea k aberratio n am p litude . Swee p rate is
10 ns/ div . Th e 8-division reference a mp litu d e was establis h ed '
when t h e top of th e waveform was positione d to t h e to p of th e
graticule . T h e n t h e wavefor m was positio n e d d ow n war d on e d ivision as α vertical position refere n ce location for c h eck i ng aberrations .
ε ig . 5-12 . Waveform exam p les s h owi n g correct h ig h-frequ ency reto α squa re wave gene r ator by t h e Ty p e 109 fo r ( Α ) a nd
( Β ) ; ge n e rate d by t h e Type 106 for ( ε ) . Vertical deflection factor
is 10 m V / d iv fo r ( Α ) and ( Β ) ; 5 mV/ d iv fo r (C) .
s p onse
5-16
U se t h ese controls as desired to d is p lay t h e waveform for best viewing w h en p erforming ste p 17 .
g . De p ress t h e time base u nit X10 M agnifier p u s h b u tto n
an d use t h e P osition control to position th e waveform to t h e
locatio n s h own in F ig . 5-12 Β .
h . C HE C K-System risetime an d aberratio n s (+I NPU T) :
am p lit u d e s h o u l d be 80% or more of th e wi d e
p u lse am p lit u d e . T h is is eq u al to 6 .4 d ivisio ns p ea k to p ea k
(see F ig . 5-12 Β ) o r more w h e n t h e wi d e pu lse is 8 divisions
in am p lit u d e as s h ow n in F ig . 5-12 Α . T h is is also e q u ivalent
to α system r isetime of 3 .5 ns as meas u re d betwee n t h e 10%
and 90 0/. p onts on t h e rising p ortion of t h e wi d e p u lse (see
Fig . 5-12 Β ) base d on an 8- d ivision p u lse am p lit u de (see F ig .
5-12Α) .
N arrow p u lse
U si n g Table 5-1 a n d t h e p roce d u re t h at follows as α g u id e,
c h ec k th e system risetime an d aberration s for all t h e V O L TS/
DI V switc h settings given in t h e table .
Calib ration Proced u re Only : Wh en p erforming ste p 17 h ,
c h ec k t h e 50 m V to 1 m V VO L TS/DI V switc h settings fo r bot h
in p uts . If t h e i n str u ment o p erates p ro perly, chec k t h e remaining V O LTS/DI V switc h settings . If t h e i n str u ment need s
recalibration, p erform t h e h ig h fre q u ency a d ju stments as
d escribe d in t h e remaining p ortion of t h is proce d u re . T h en
p erform ste ps 18 th ro u g h 20. N ext, re p eat ste p 17 to rec h ec k t h e VO LTS/DI V switc h settings for both in p u ts .
P erformance C h ec k and /or Calibration Proced u re :
Wh en c h ec k ing aberrations, use t h e information given in
Table 5-2 an d t h e NOTE th at follows .
ΝΟΤΕ
T h e aberration tolerance is given as α g u i d e to
ch ec k t h e instr u ment for correct o p eration an d is
not in instr u ment s p ecification . T h e tolerance measu rement excl u des t h e t h ic k ness of t h e trace . F ig .
5-12C s h ows an exam p le of α waveform obtained
when u sing α Ty p e 106 α 5 α generator . W hen
using t h e Ty p e 109 α 5 α generator, t h e tolerance
meas u rement also excl u d es t h e slo p ing front cor
ner of t h e waveform ca u se d by t h e c h aracteristics
of t h e Ty p e 113 Delay Cable u se d as α c h arge line
to prod u ce the wide p u lse .
P erfo rmance Ch ec k /Calib ration-Ty pe 7Α13
TA BLE 5-1
Ch ec k Step Res ponse
Risetime
& Aberrations (bot h
in pu ts)
C HE C K
System
Ge n erator
V OL TS/DI V Ι U se 10 Χ Use 50Q
System
Aberrations'
Atten . ~
Term .
~ Switc h Setting
~ R isetimel
10 mV
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
20 mV
Χ
Χ
Χ
Χ
.1 V
.2 γ
Χ
χ
Χ _
χ
Χ
χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
5 mV
2 mV
1 mV
Ty pe
109
Pu lse
Generator
50 mV
.5 V
Not
Used
1 V
2V
5V
'
50 mV
'
Χ
Χ
10 mV
106
Squ arewave
Generato r
Χ
Χ
20 mV
Ty pe
No
C h ec k
Χ
Χ
Χ
No
C h ec k
Χ
5 mV
Χ
Χ
Χ
Χ
Χ
1 mV
Χ
Χ
Χ
2 mV
1 To meet the syste m r iseti me requ i r eme nt, the n a r row pulse amp lit u de must be 80% of the wide pulse
am p litud e. Wit h an 8-divisio n p eak -to- pea k wid e pulse disp layed, t he narrow p u lse amp lit ude sh o u ld
be 6.4 divisions or more pea k to p eak .
2Am p lit ud e of the generator out pu t sh o u l d be mai ntai n e d at 8 division s peak to pea k . Then th e
dis play s h o u l d be positio ned downwar d o n e division wh en a pp lying th e sig nal to th e + I NPUT conn ector (as shown i n F ig . 5-12C) a n d h e Time/Div switch set to 10 ns/ div to per mit vis u al measureme n t of
t he a berratio n s. When h e signal is a pp lied to h e - INPU T co nn ector, the 8-d ivisio n wavefor m s h o u ld
be position ed o ne divisio n ab ove t he botto m of t h e graticule .
t
t
t
Wh en t h e c h ec ks usi n g t h e ly pe 109 Pu lse Generato r as
signal so urce are completed, t u rn off th e gene r ato r and
Step Res ponse Aberration Tole rances (bot h in puts)
d isconnect it from t h e Type 7Α13 . To complete th e c h ec k s
listed
i n Tables 5-1 and 5-2 u si n g t h e Ty pe 106 Sq u are- Wave
Aberration
Signal
VOL TS/DI V
Tolerance3
r
ator as th e sig n al so u rce, set t h e co ntrols as follows:
Gene
App lied to :
Switc h
greate r t h an)
(No
TA BLE 5-2
th e
Settings
1 mV to .5V 1 +2 .5%, -2.5%, o r α total
of 4% p ea k to pea k
+I NPU T
1
Connecto r
V to 5 V
1 mV to .5 V
' +7%, -7%, or α total of
10% p ea k to pea k
+3%, -3%, or α total of
5% pea k to pea k
-IAm
NPUT
1 V to 5 V
Co n nector
+7%7%
, -, or α total of
10% pea k to pea k
'This is n ot an inst rume n t s p ecificatio n ; see t h e NOTE in step 17 h .
Wh e n c heck i n g the abe rratio n s, use α 10-πs/ d iv swee p rate a nd
meas ure the total p ea k-to- p ea k aberration in t he fo rm of ove rs h oot,
r o un di n g, ringing, o r tilt ex presse d as α pe r ce n tage of p u lse amp lit ude. E xcl ude t h e t h ic kn ess of t he trace in t h e meas ur eme n t. ( Wh en
u sing t h e Ty p e 109 with α Ty pe 113 as α ge n e rator, also excl ud e
t h e f ront co r ne r slo p e f ro m the meas urement.) Th e p u lse am p lit ude
r efe re n ce level is t h e ave rage level i n t h e 40 ns to 50 ητ pe r iod afte r
the 90% point of t h e ste p (see F ig . 5-12C) .
Ty pe 106
Repetitio n R ate
Ra n ge
100 kH z
Mu ltiplier
1
Symmet ry
As is
N ot
plitu de
H i Amplitude/Fast
Rise
a pplicable
F ast R ise
+T ra n sition Am plit u de
Fu lly CC W
-Transition Amplit u de
Not
Power
On
ap p licable
Type 7A13
VOLTS/DI V
50 mV
Performance C h ec k /Calibration-Ty p e 7Α 13
Time Base Plug-in
Mag n ifier
Χ1
Time/Div
5 Its
Apply t h e signal from t h e Ty p e 106 +O u t p u t connecto r
th ro u g h α 5-ns coaxial cable and 50-o h m termination to t h e
Ty p e 7Α 13 +I NPU T connecto r . Set t h e Ty p e 106 +T ransition
Am p lit u d e an d Symmetry cont rols for α symmet r ical waveform 8 divisions p ea k to pea k in am p lit ud e . Set t h e time-base
un it M agnifier switc h to Χ 10 a n d t h e Time/Div switc h to .1 .
R ec h ec k t h e am p lit u d e of t h e ste p waveform an d reset t h e
gene rator +Transition Am p lit u d e control as necessary, to
obtain 8 divisions of vertical deflection in th e 40 ns to 50 n s
r egion as d escribed earlier (ste p 17h ) . C h ec k aberratio n s
for t h e 50 m V to 1 m V p ositions of t h e Ty p e 7 Α 13 V O LTS/
DI V switc h .
i . Afte r c h ec k i n g t h e system ste p res p onse and aberrations
with t h e sig n al a pp lied to t h e +I NPU T connector, d isco n n ect t h e signal from th e +I NPU T co nn ector a n d apply it to
t h e -I NPU T co nn ecto r
j.
Fig .
5-13 .
boa rd.
Set t h e controls as follows :
+I NPU T Mo d e
Ty p e 7Α 13
Locatio ns
of the high-frequency a dju stme n ts on the Input
GND
-I NPU T Mode
DC
Time B ase Unit
L evel/Slo pe (T r igge r i n g)
N egative
slo p e regio n
k. C HEC K-System r isetime an d aberrations (-INPUT) :
U se step 17 h with Tables 5-1 and 5-2 as g u i d e to c h ec k
t he system ste p res p onse . T he waveforms will appear similar
to th ose s h own i n F igs . 5-12 Β an d 5-12C exce p t t h at t h e
wavefo r ms will be n egative-going .
Ι.
F or Pe r fo r ma n ce C h ec k Only, go to ste p 18 .
m . AD JU ST- R 196, R 432, R 300, C187, R 187, C163, C113,
C150, C250 an d C213 (see F igs . 5-13 and 5-14) i n t h e given
ord e r fo r o p tim u m response to α s q u are wave . C250 a n d
C213 a re mai n ly -I NPU T a d ju stme nts . To p e rfo r m t h e ad ju stments, u se th e information i n t h e p roce d u re t h at follows :
η . Afte r p e rformi n g ste p s 17 α th ro u g h 17 k a n d it is d etermined th at th e Ty pe 7Α 13 h ig h -f re q u ency squ a re-wave res p onse nee d s to be im p rove d , α s u ggested se q u ence is o u tline d n Table 5-3 . T h e ste ps th at follow p rovid e ad d ition al
info rmatio n based on th is se qu ence . Rea d t h e p roced ur e a n d
study t h e table to d etermine, if p ossible, t h e ad ju stme nts
t h at need to be made to resto r e th e Ty pe 7 Α 13 to its req u i r e d
p erforma nce .
i
Fig . 5-14 . Pa rtial view of t h e O ut pu t b oa rd
hig h -,freq u e n cy a d ju stmen ts .
s howing
locations of t h e
ο . Tu rn off t h e i n d icato r oscillosco p e . I n se rt t he Plug-In
between t h e Ty p e 7Α13 a n d t h e in d icator oscillosco p e . Tu rn on t h e i nd icator oscillosco pe .
E xte n d er
P erformance Check/ Calibration-Type 7A13
TABLE 5-3
High-Freq uency Compensation Adjustment Sequence
Type 106
R e p etition
Rate
Ι
10 kHz
Signal
A pp lied
to :
Time B ase
Swee p
R ate
A d justment
+INPUT
Connector
50 μ s/ d iv
or
20 Its
R 196'
100 kHz
1 ριτ / d iv
.1 μ s/div
A p proximate
Time
Domain'
R432
I
R300
5 n s/ d iv
1
or
R 187
10 ns/ d iv
Cl 63
C113
50 ,us
Turn off the oscilloscope . Insert the Plug-In E xten d er between the Type 7 Α 13 a nd indicator oscilloscope . Turn on
the in d icator oscillosco p e . Set the V OLTS/DIV switch to
10 mV a nd the BW switch to 5 MHz. Ad just for best flat
to p . R eset BW switch to FULL for remaining a d justments .
100 n s
Ι Ad just for o ptimum square corner . (Ignore fast s p ike, if
any, that may remain on the top front corner.)
50 n s
Cl 87
P roce d ure
I Ad just for best flat to p .
5 ητ to 10 n s
Turn off in d icator oscillosco p e. R emove the Plug-in Exten d er and insert the Ty p e 7Α 13 d irectly into the ind icator
2 n s to 7 ns
d oscilloscope . Turn on indicator oscillosco pe . A d just for
optimum square corner . Leave the Type 7Α 13 inserted
2 ns
d irectly in the in d icator oscillosco p e for the remaining adjustments .
1
2 ns to 4 ns
C150
1 ns to 3 ns
C250
1 n s to 7 ns
C213
2 n s to 6 ns
C250
1 n s to 5 n s
I Ad just for minimum ri pp le near front corner .
Adjust for o p timum square corner . A d just in e qual incre
ments to maintain C150 an d C250 at or n early the same
p hysical positions .
-INPUT
Connector
10 ητ / d iv
+INPUT
Connector
5 ns/ d iv
-INPUT
Connector
5 n s/div
C213
C250
Same as given Ι R epeat ste ps 17i an d
p reviously
+INPUT
Connector
5 π s/d iv
C163
a pp licable portions of step 17ρ. R eadjust for optimum square corner. Set Ty p e 7 Α 13 for 1 mV a nd r eadjust
Same as given
for o p timum square corner . R epeat steps 17h through 17k .
p reviously
If α b ump is p resent in the 5 ns to 10 n s r egion, p erform ste p
20 .
~
C150
C113
C163
C1 13
C150
C187
R e peat
ste p s 17i and
j.
Adjust for optimum square corner .
Ι
Same as given Repeat ap p licable portions of ste p 17ρ.
previously
mum square corner.
j.
R eadjust
R ea d
just for opti-
for o ptimum square corner .
R epeat
~ Same as given Ι After performing step 20, C187 may nee d to be read juste d .
previously
Re p eat steps 17h t hrough 17k .
'The 90% p oint on t he r ising portion of the waveform (see F ig . 5-15C for location) is the time reference used to determine the time d omain
o r a rea affected by the adjustment . For example, with t he sweep rate set at 5 n s/div, adjustment of C187 will affect the 5- ητ to 10-ns area
n ear the top f ront corner of the waveform when measured with respect to the 90% point on the rising portion of the waveform.
'if
196 is a d juste d , r epeat step 3 .
R
Time B ase Plug-In
ρ . Set the controls as follows :
Typ e 7Α 13
+INPUT
-INPUT
M ode
Mo d e
DC
GND
VOLTS/DIV
10 mV
BW
5 MHz
L evel/Slo p e (Triggering)
Positive slo p e
Time/Div
50 μs
Magnifier
Χ1
Typ e 106
R epetition
R ate Range
10 kHz
r egion
P erfo rmance Chec k /Calib ration-Type 7Α 13
q. R emove t h e 10 Χ atten u ator an d connect t h e 5-ns coaxial cable di r ectly to th e Type 106 +O U T PU T co n nector. Disconnect t h e Ty p e 106 sig nal from t h e Ty pe 7Α 13 -I NPU T
co nn ector an d apply it to t he +I NPU T co nn ecto r.
MMMMMEN
BEEN 0
NAPPEREN
"
Co rrect ""
"
NEENEEN
"
offlowns
ΑΙ Waveform exa m ple sh owi ng cor rect h igh -frequ e ncy res po n se
ο α 10- kH z squ a re wave at α sweep rate of 50 μ s/ div .
ΙΙΟηΥ
ΜΕΕ
90 N S
EMPW
.O
r . U si n g Table 5-3 and 5-15 as α g u ide, pe r form th e
h ig h -freq u e n cy com pe n satio n a dju stme n ts . N ote t h at w h en
u sing th e table, t h e Plug-In E xte n d e r is u sed w h ile ad ju sting
R 196, R432 an d R300 . For all t h e remai n i n g ad ju stme n ts, t h e
Plug-In E xten d er is removed and t h e Ty pe 7Α 13 is inse rted
directly i nto t he i n d icator oscillosco p e . U se α 6-d ivision p ea k
to p ea k waveform am p lit u d e d u ring t h e ad ju stment procedure . K ee p t h e wavefo r m p ositioned abo u t o n e d ivision
below th e to p of t h e gratic u le w h en u sing t he +I NPU T
connecto r a n d abo u t one division above th e bottom of t h e
g ratic u le wh en u sing t h e -I NPU T con n ecto r
s . Afte r com p leting t h e h ig h -freq u e n cy com p ensation a d ju stme n ts and c h ec k ing t h at t h e i n str u ment o p erates p ro pe r ly
for all V O L TS/DI V switc h settings from 50 m V to 1 m V , p e rfo r m ste p s 18 t h ro u g h 20. T h e n , re p eat ste p 17 to rec h ec k
all t he V O L TS/DI V switc h setti n gs .
t. Disconnect t h e sig n al from t h e Ty p e 7 Α 13 a nd leave
t h e generator t u rned on .
ATTENUATOR COMPEN SATION ADJU STMENTS
1ηcοr r ect
Control
Settings
Wh en p erfo rming α com p lete p roced ure, change the followi ng co ntr ol setti ngs and procee d with step 18 .
16-6
6-ι
1 6-6 .
.
+I NPUT
t
Β ) R 196 is m isad justed to sh ow its effect on h e 10- kH z ωαν
Sweep rate is 50 μs/div .
or m . 10
INMNXEE~N
MMEMEN0000
0
int
MEMO
0
M
No
No
-I NPU T
Ty pe 7Α13
M ode
DC
Mode
GND
V O LTS/DI V
mV
BW
5 MHz
Time- Base Plug-in
L evel/Slo pe (Trigge r i n g)
P ositive
Time/Div
0 .5 ms
Mag n ifier
Χ1
slo p e region
If t h e remaining co n t r ols nee d to be c h ec ked fo r p r o p er
settings or if ste p 18 is b ei n g used as α sta r ting p oint fo r
p a rtially calibrating t h e Ty p e 7 Α 13, refe r to t h e Pr eliminary
P roce d ur e .
18. C h eck/Ad just +INPU T Attenuator
(C) Wavefor m exa mp le showi ng cor r ect h igh -f r eque n cy resp onse
to α 100- kH z sq uare wave at α sweep rate of 10 ητ/d iv .
F ig . 5-15 . Waveform exa mp les obtaine d w h e n performing t h e h ig h fre qu e n cy adju stme n ts pr ocedure usi n g t h e Type 106 as α signal
gene rator . Ve r tical deflection facto r is 10 mV / d iv .
5-20
Com pensation
Ο
α . Test e q u i p ment set u p, wit h co nn ectio n s made at comp letio n of ste p 18 ι , is s h own in F ig . 5-16 .
b . Set the Type 106
the followi n g p ositio n s :
S qu
a r e-Wave Ge n erator cont rols to
P erformance Check/ Calibration-Type 7A13
Indicator
Oscilloscope
5- n s
50-ohm
(, R -t ο -B RI C
Coaxial
Adapter
Cable
F ig .
R e p etition
R ate R ange
Multi p lier
1 kHz
M i d range
Am p litud e
Fast Rise controls
qui pment required when performing steps 18 and 19.
E
1
Symmetry
Hi Am p litu d e/Fast
5-16.
Fully CCW
R ise
H i Am p litu d e
N ot
A pp licable
c . A pp ly the 1 kHz signal from the Ty pe 106 h igh am plitu d e Out p ut connector through α 10 Χ attenuator, 5-ns coaxial cable, 50-ohm in-line termination an d α 20- p F input R C
normalizer to the Ty p e 7Α 13 +INPUT connector .
d. Set the Type 106 Am p litu d e control to p roduce α d isplay 6 divisions in am p litu d e . U se the Ty pe 7 Α 13 POSITION
control to center the dis p lay .
e . Set the Ty p e 106 Symmetry control for α symmetrical
waveshape an d , if n ecessary, r eset the Multi p lier control to
obtain the 1 kHz output repetition rate .
f . CHECK-The waveform shoul d h ave α flat to p similar
to the illustration s hown in Fig . 5-17Α . Aberrations shoul d n ot
excee d ±1 % or ±0 .06 division for α 6-division p eak-to- p eak
d is p lay .
U sing Table 5-4 as α g uide, check the waveform for α flat
to p a nd square front to p corner in the 10 mV to 5 V p ositions
of the V OLTS/DIV switch . U se α 6 d ivision display am p litu d e
for each switch position .
ΝΟΤΕ
T he aberration tolerance describe d in this ste p
is given as α g ui d e to correct instrument o p eration
an d is not an instrument specification .
g . ADJUST-The +INPUT shunt ca p acitance an d t he attenuator a d justments listed n Table 5-4 for optimum s q uare
corner an d flat to p (see F ig . 5-17Α ) . R ea d just the generator
out p ut with each setting of the VOLTS/DIV switch to obtain 6
d ivisions of d eflection . Remove the 10 Χ attenuator an d t he
50-ohm termination when necessary to obtain more signal
drive . In the 2 V /DIV position, re p lace the 50-ohm termination with α G R-to-BNC a d a pter .
i
F igs . 5-17 Β through 5-17 Ε are some waveform exam p les
obtaine d w hen the a d justments were misadjusted . Fig . 5-18
shows the location of the adjustments .
Perfo rma n ce C h ec k /Calib ration-Typ e 7Α 13
;, r ν
O CORE
SN,
Op ti mum
squ are
corner and
flat to p
( Α ) Correct .
EM
00
moommo
MEN
( Β)
(C)
I
npu t shunt cap acitan ce ad j ust ment i nco rr ect .
I np ut shun t ca pacita nce adju st me n t i n correct .
F ig .
5-22
5-17.
E xa mp les
of wavefo r ms obtai ne d whe n
Iffi
mmu%
mm
(D) I nput atten u ator ad justmen ts i ncorrect .
(Ε)
I
np ut atten u ato r adjust me n ts i ncorrect.
p erformi n g
ste p 18 .
Sweep
r ate
is 0 .5 ms/ d iv.
P e rfo r mance Chec k /Calibration-Typ e 7Α 13
TABLE 5-4
-1-I NPUT Attenuato r Ad justments
V O L TS/DI V
Switc h Setting
U se 10 Χ
Atten .
10 m V
20 m V
50 m V
.1 V
2V
.5 V
_
1 V
Χ
χ
Χ
Χ
χ
χ
_2 V
5V
50 Ω
Term .
U se
χ
Not
U sed
U
se G R -to- B N C
Ada pter
U se
RC
Norm .
Χ
Χ
N ot
U se d
Χ
Χ
ot
U sed
χ
Χ
Χ
Χ
Χ
Χ
Χ
N
Ad ju st for Op tim u m
Top F ront
Corner Sq u areness
No Ad ju stment
C8A
C h ec k
C h ec k
C5A
C h ec k
C h ec k
F lat
Top
C14
C hec k
C h ec k
C8 B
C h ec k
C h ec k
C5 B
Ch ec k
C h eck
If th e waveform aberrations excee d th e ±1 % tole rance
req u i rement w h en p erforming th e "C h ec k " p o r tio n of t h e
table, it may be n ecessary to com p romise t h e ad ju stme n t(s)
t h at p recede t h e Ch ec k . F o r exam p le, to mi n imize the to p
front co r ner aberratio n in t h e .5V p ositio n , slig h tly rea d ju st
C8A ; th en rec h ec k t h e .2 V.a nd .1 V switch p ositio n s to determine if t h e tole ra n ce is wit h in t he sp ecified req u iremen t .
Wh en a d ju sti n g C8A an d C5A, t h e i ndicator oscillosco p e
can be set for α swee p rate of 0 .2 ms/d iv .
b . Disco n nect th e 20- pF in p u t R C normalizer from t h e
+I NPU T connector an d connect it to t h e -I NPU T co nn ector.
c . Inse rt th e 50-o h m ter mi n ation i n p lace of t h e G R-to- BN C
a d a p te r . Reco n nect th e 10 Χ atten u ator between t h e coaxial
cable an d Ty p e 106 O u t p u t connector . T h is is t h e same set u p
as s h own in F ig . 5-16 exce p t th e signal is ap p lied to th e
-I NPU T co nn ector.
ig . 5-18 . A dju stme n t locations
Adjustmen ts procedure .
F
19 .
C h ec k /Ad ju st
Com p ensation
u se d
in t h e Atte nu ato r Com p ensation
-I NPU T Atten u ator
ρ
α . Set10
t h e Ty pe 106 Am plit u d e cont rol for mi n im u m o u t pu t .
d . Set t h e Ty p e 7Α 13 co ntrols as follows :
+ ΙΝΡυΤ Mo d e
GN D
-I NPU T Mod e
DC
VO LTS/DI V
mV
P e rfo rma n ce Ch ec k /Calibration-Ty pe 7Α13
e . Ch ec k t h at t he time-base p l u g-in u nit Time/Div switch
is set to .5 ms .
f . Set th e Ty p e 106 Am p lit u de control to obtai n α d is p lay
6 d ivisions in am p lit u d e .
g . Set t h e time base p l u g -i n un it L evel/Slo pe control in
t h e negative slo pe r egion .
ME
h. C HEC K-T h e waveform s h o u l d h ave α flat bottom as
ill u strate d in F ig . 5-19 . Aberratio n s s h ou l d n ot excee d ±1
o r ±0 .06 division for α 6 division pea k -to- p ea k d is p lay .
MENNEN
Ι
MMEMMr~
U sing Table 5-5 as α g u i d e, c h ec k t h e wavefo r m fo r α flat
bottom and sq u are front bottom corn er i n th e 10 m V to 5 V
positions of th e V O LTS/DI V switc h . U se α 6 d ivisio n d is p lay
am p lit u de fo r eac h switc h p ositio n .
an d flat
ONEWWRIFEEN
ΝΟΤΕ
MMMMMMMMMM
T h e aberration tolerance described in t h is ste p is
given as α g u ide to correct i n str u ment o p eration
and is not an instr u ment s p ecification .
ADJU ST-T h e -INPUT shunt capacitance C34 and the
atten u ato r ad ju stments listed in Table 5-5 fo r α sq u a re lowe r
front corne r an d flat bottom (see F ig . 5-19) . T h e p roced u re
u sed h e r e is simila r to t h e p roced u re u se d n perfo r ming ste p
18 . F ig . 5-18 s h ows t h e locations of t h e ad ju stments.
Ί.
i
Fig . 5-19 . C h ec k ing fo r optimum -I NPU T wavefo rm at swee p rate
of .5 ms/ d iv .
j.
Disco nn ect t h e sig n al from t h e -I NPU T connector and
t ur n off t h e generator.
TA BLE 5-5
-I NPU T Atten uator A d justments
VO L TS/DI V
Switc h Setti n g
10 m V
20 m V
50 m V
.1 V
_
.2 V
_
.5 V
_1 V
_
2V
5V
Use 10 Χ
Atten .
~
U se 50, Ω ~ U se G R -to- BN C
Term .
Ada p ter
Χ
Χ
Χ
Χ
Χ
Χ
N ot
U sed
Χ
Χ
Χ
Χ
N ot
U se d
Not
U sed
Χ
Χ
~
U se
Adju st for O p tim u m
RC
N orm .
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
Χ
~
B ottom F ront
Corner S q u are n ess
No Ad justment
C28A
Ch ec k
Ch ec k
C25A
Ch ec k
Ch ec k
F lat
B ottom
C34
C h ec k
Ch ec k
C28B
Ch ec k
Ch ec k
C25B
Ch ec k
Ch ec k
P e r forma n ce Check/ Calibration-Type 7A13
42-inch
50-αhm '
Coaxial
Ca ble
F ig
CO M M O N
Control
MOD E
. 5-20 . Initial set up s h owing equipment required fo r ste p s 20 t h ro u g h 22 .
REJE CTIO N
ADJU STMEN TS
Settings
Wh en p erforming α com p lete p roce d u re, c h ange t h e following control settings an d p roceed wit h ste p 20 .
Ty p e 7 Α 13
20. C h ec k /A d ju st
Common
Am plifier H ig h - Fre q u ency Ο
Re j ection
Mod e
α . Test e q u i p me n t set u p, wit h connectio n s mad e at comp letion of ste p 20 d is s h own in F ig . 5-20.
b . Set th e Ty p e 191 Constant Am p lit u d e Signal Generator
controls as follows :
F req u ency
d ial
1O MHz
DC
F re q u ency R ange
8-18
50
VO L TS/DI V
GND
.2 γ
Am p litu d e
V ariable
BW
FULL
+I NPU T
-I NPU T
M od e
Mod e
Am p lit u d e
P ower
Time B ase Plug-In
L evel/Slo p e (Triggering)
P ositive
Time/Div
50 μs
slo p e region
If t h e remaining controls need to be c h ec ke d for p ro p er
setti n gs or if ste p 20 is being u sed as α starting p oint for
p artially calibrati n g t h e Ty p e 7 Α 13, refer to t h e P reliminary
P roced u re .
Cal
Range
50-500 mV
On
c . Co n nect th e 10- MH z signal from t h e Ty p e 191 O u t p u t
connector th ro u g h α 5- ητ coaxial cable an d G R -to- BN C
a d a p ter to t h e flexible Τ co nn ector .
d . U se t h e p ositioning co n trols to position t h e d is p lay fo r
best viewing .
e . Set t h e Ty pe 191 Variable co n trol to obtain α dis p lay
5 d ivisio n s p ea k to p ea k in am plit u d e . T h is i n d icates t h at α
1-volt sig n al is a pp lied to t h e Ty p e 7 Α 13 .
Performance C h ec k /Calibration-Typ e 7Α 13
maximum
Allowable "ΕΝ
ERC+υ a Ι
Amplitude
Α m ρ ! ιι , υεie
1 d' ν
F ig . 5-21 . M easur i n g t h e peak-to-pea k am p litude of α common mo de
d ifference signal . Vertical deflection facto r : 1 m V / dίν ; swee p r ate :
.05 μ s/ d iv .
f.
5-22 . L ocation s of adju stme n ts on t h e I npu t b oard for t h e Commo n M o d e Rejectio n Adjustme nts procedure .
F ig.
Set th e controls as follows :
Ty p e 7Α13
a n d C224 to obtain mi n im u m dis p lay am p lit u d e .
necessary read ju st R 167 (see Fig . 5-6) .
Also, if
Mode
DC
i . Set t h e controls as follows to apply α 10-volt 1-MHz
VO
L
TS/DI
1
V
mV
common
mo d e sig n al to t h e Ty p e 7 Α 13 .
-I NPU T
Time Base Plug-in
Time/Div
.05 μ s
g . C HE C K-One divisio n o r less dis p lay am p lit u d e. Th is is
e q u ivalent to α CMRR of 1,000 :1 o r greate r. M eas u re th e
p ea k to pea k excur sion, excl u d ing t h e trace th ic k ness, as
s h ow n in Fig . 5-21 .
h . AD JU ST-C171, C271, C162, C262, C124 an d C224 (see
F ig . 5-22) to red u ce t h e d is p lay amplit u de .
N ext, ad ju st eit h e r C134 or C234 (see F ig . 5-22) by tu r n i n g
t h e sl u g cloc k wise several t ur ns . T hen, read ju st C124 a n d
C224 for minim u m dis p lay am p lit u d e . If t h e mi n im u m am p lit u de t hu s obtai n ed is n ot less t h an t h e am p lit u d e obtained
befo re C134 or C234 was a d ju ste d , t u rn C134 or C234 sl u g
(w h ic h ever was p revio u sly a d ju sted) to α positio n t h at is
f ur t h er o u tward t h a n t h e o r iginal p osition . Read ju st C124
a n d C224 fo r minim u m am p lit u d e .
Ty p e 191
F re q u ency
Fr eq u e n cy
Am p lit u d e
d ial
1 MHz
R ange
.5-5 V
R ange
.75-1 .6
Time B ase Plug-in
Time/Div
.5 μτ
j.
C HE C K-O n e d ivision or less d is p lay am p lit u d e . T h is is
eq u ivalent to α C MRR of 10,000 :1 or g reater.
k . AD JU ST-If necessa r y, rea d ju st C162, C262, C171 and
C271 to obtain minim u m dis p lay am p lit u de .
I
R epeat, if n ecessa r y, t he p roced u re fo r a d ju sting C134
(or C234), C124 a n d C224 to obtain minim u m d isplay am p lit u d e . Also, if n ecessary rea d ju st R 167 (see F ig . 5-6) .
Ι , N T ER ACTIO N- R e p eat ste p s 20α thr o u g h 20i u si n g th e
1-volt 10-MHz sig n al . Rea d ju st C134 o r C234 (see F ig . 5-22)
an d R 167 (see Fig . 5-6) α slig h t amo un t to obtai n minim u m
am p lit u d e . T he proced u re an d all adjustments given in ste p
20 may need to be r ea d ju sted several times to obtain t h e best
com p romise between t h e dis p lay am p lit u d e obtai n ed u si n g
t h e 10-MH z signal a nd th e one obtai ne d u sing th e 1-MHz
signal .
R ea d ju st C124 a n d C224 fo r mi n im u m am p litud e . R e p eat,
if necessary, t h e p roce d u re fo r ad ju sti n g C134 (o r C234), C124
m . C HE C K- U sing Table 5-6 as α g u ide, c h ec k t h e pea k -top ea k d is p lay am p lit u de at t h e given f r e que n cies .
P e rfo rmance
C h ec k /Calibration-Ty p e 7Α 13
TA BLE 5-6
Rej ection
Common Mod e
Gene r ator
VO L TS/
Generator
Fr e qu ency Am p lit u d e
Type
191
20 MH z
5 MHz 1
L ow- F req .
100 kH z
Sine-W ave
Gene r ator
DI V
1 V
2V
1 mV
I
20V
1 mV
1 mV
C h ecks
Ρ - Ρ Dis p lay
C MRR
~ Time/Div ~ Am p lit u d e
.02 μs or ~ 4 d iv or less
250 :1
Ι .05 μs
1 .1 Its o r 1 1 d iv or less
2,000 :1
.2 μ s
I 10 μ s or ~ 1 div o r less Ι 20,000 :1
5' ιs
η . Discon n ect t h e signal from t h e flexible Τ co nn ector.
NOTE
ο . N T ER ACTIO N - R e p eat ste p 17 and th e n ste p 20 as
often as necessary to meet th e p e r for mance re qu ireme n ts .
To c h ec k t h at t h e signal is set to t h e p ro p er amp lit u de, p ress t h e Vc REF -ID EN T b u tton a n d c h ec k
t h at t h e trace is p ositioned to gratic u le center .
R elease t h e V c REF -ID EN T b u tton . Rea dju st, if nec
essary, t h e generator Am p lit u de control to p ositio n
t h e bottom of t h e s qu are waves to coi n cide wit h
gratic u le center .
I
21 .
C h ec k /Ad ju st Atten uator Common
Rejecti on at 100 Hz
Mod e
0
α . Set t h e cont r ols as follows :
Ty pe 7 Α 13
+I NPUT Mod e
GND
-I NPUT Mode
G ND
V O LTS/DI
2
V
Pola r ity
V
5 MHz
B ase
Time
Time/Div
Plug-in
5 ms
Typ e 106
R e p etitio n R ate R a nge
100 Hz
Symmetry
Mid r a n ge
Mu lti1
p lie r
Am p litu de
H i Amplit u d e/ Fast R ise
F ast
R ise co n t rols
Set t h e controls as follows :
Typ e 7Α 13
-I NPUT Mod e
CC W
H i Am p lit u d e
N ot A pp licable
POn
owe r
6 . Apply t h e 100-Hz signal f r om th e Ty pe 106 O ut pu t conn ecto r t hro u g h α 5-η 5 coaxial cable an d α G R -to- BN C
ada pter to t h e flexible Τ con n ecto r attac h ed to t h e Ty pe
7Α l3.
ε . U sing t h e Type 7Α 13 P OSITIO N co n t r ol, positio n t h e
trace to gratic u le center .
d . Sim u ltaneo usly set th e +I NPU T Mod e switc h to DC
an d th e -I NPU T Mod e switc h to Vc.
e . Set t he Ty pe 106 Am p lit u de co nt rol to p osition t h e b ottom of t h e squ are waves to coi ncide with g ratic u le ce n te r.
At t his p oi nt i n t h e proced ure, t h e Ty pe 106 ge ne rato r is set
for α -50 volts to 0 volt p ea k am plit u d e s qu are-wave o u tpu t sig nal .
DC
VO L TS/DI V
-
V O LTS Co unte r
050.0
BW
f.
.1 V
Time
B ase
Time/Div
Plug-in
2 ms
g . C HE C K-F or α 0 .25 d ivisio n (25 mV) or less dis p lay
amplit u d e w h e n com pa r ing t h e flat to p a n d bottom portions
of t h e common mo d e d ifference sig n al . Th is is eq u ivale n t to
α CMRR of 2,000 :1 or g r eater. Ig n o re t h e spi k es on th e lea d ing po r tions of t h e s qu a r e waves.
h . ADJU ST- R 28G (see F ig . 5-9 Β ) fo r minim u m s q u a r e
wave d is play am p lit u d e w h en com pa r i n g t h e flat po rtion s of
t he sig nal .
i.
Set t h e V O LTS/DI V switc h to 1 V.
j . C HECK-F or 1/8 of α mino r d ivisio n (25 m V) or less display am p lit u de w h e n com p a ring th e flat to p a n d bottom
po rtions of the sq u a re wave . T h is is equ ivale n t to α CMRR
of 2,000 :1 o r greater .
ΝΟΤΕ
1/8 minor division (abo u t 7/τ trace wi d t h ) is d ifficu lt to meas u re . H oweve r , meas u re t h e am p lit u d e as closely as p ossible to d ete r mine w h et h er
or n ot t h e r eq u irement is met .
Calibratio n P roce d u re Only : If t h ere is some do ub t,
slig h t ad ju stment of R S E ( p art k of t h is ste p ) r ed u ces t h e am p lit u de to α straig h t li n e so t h at t h e
Typ e 7A 13 will h ave α C MRR of 2,000 :1 or greater .
k . AD JU ST- RS E (see
F ig .
5-913) for minim u m s q u a re wave
d is play am p litu de w h en com p a r i n g t h e flat p ortio n s of th e
signal .
Ι . Disconnect t h e signal f rom th e flexible Τ con necto r an d
t urn off t h e generato r .
5-27
P e rformance Ch ec k /Calib ration-Typ e 7Α 13
22 . C hec k /A d just Atten u ator Common
R e j ection at 10 kH z
Mod e
Ο
α . Set t h e cont r ols as follows :
Type 7Α 13
Mode
Mode
GND
V O LTS Co u nter
025 .0
+I NPU T
-I NPU T
Meas u re
V
Time B ase Plug-in
Time/Div
.5 ms
Low- F re quency Sine- Wave Generator
F requ2
ency switc h
Freq u e n cy
d ial
L evel co n t r ol
i . CHE C K-Fo r 1/Θ of α minor divisio n (25 m V ) o r less d isplay am p litu d e . T h is is e q u ivale n t to α CMRR of 2,000 :1 o r
greate r .
ΝΟΤΕ
GN D
2
V O LTS/DI
V
Set t h e νοιτ S/DI V switc h to 1 V .
i.
kH z-20 kH z
10
t h e am p lit u d e as closely as p ossible .
Excl u d e t h e t h ic k ness of t h e trace w h en ma k ing
t h e meas u rement . Calibratio n Proce d u re Only :
If t h ere is do u bt w h et h er or n ot t h e d is p lay am
p lit u de meets t h e re q u irement, slig h t a d ju stment
of C25A ( p art k of t h is ste p ) ca u ses α noticeable
effect on t h e d is p lay a nd it is easy to observe
w h en t h e minim u m am p lit u d e p oint is reac h ed .
k . AD JU ST-C25A (see Fig . 5-9 Β) slig h tly fo r mi n im u m display am p lit u d e .
Ι . Disconnect t h e sig nal a n d t urn off t he generator .
t h e flexible Τ co nn ecto r from t h e Ty p e 7Α 13 .
As is
b. Apply t he 10 kH z sig n al from t h e low fre q u ency si n ewave ge n erator O u t pu t connecto r t h ro u g h α 42-inc h 50o h m coaxial cable to t h e flexible Τ connecto r attac h e d to
t h e Type 7 Α 13 .
ε.
t r ace
switc h to DC
e . Set t h e ge n e rato r L evel co n t rol so t h at t h e bottom ti ps
of t h e si n e waves coi n ci d e wit h gratic u le ce n te r . At t h is
poi nt i n t h e p roced ure, t h e generator is set fo r α 50-volt
pea k-to-pea k o u tpu t signal .
ΝΟΤΕ
10
To c0
h ec k t h at t h e sig n al is set to t h e p ro p er amp lit u d e, press t h e V c REF -ID EN T bu tto n and c h ec k
t h at t h e trace is p ositioned to gratic u le center .
Release t h e V c REF -ID EN T b u tto n .
R ead ju st, if
necessary, t h e ge n erator Level co n trol to p osition
t h e sine wave ti p s to coincide wit h gratic u le ce n ter .
f.
RE S PO N S E C HE CK S
(i n cl u d ing
to gratic u le ce n te r.
Mode
Set t h e co n t rols as follows :
Typ e 7Α 13
-I NPUT
Mode
V O LTS/DI V
DC
.1 V
Time Base Plug-in
Time/Div
AMPLI F I ER
T R IGG ER ά SIG N A L
U sing t he Ty p e 7 Α 13 POSITIO N control, p osition t h e
d . Sim u ltaneo u sly set t h e +I NPUT
and t h e -I NPU T M ode switc h to V c .
Remove
α
trigger gain c h ec k)
Control Settings
Wh e n p erforming α com p lete p roced u re, c h a n ge th e following co n t r ol settings a n d pr oceed wit h ste p 23 .
Ty pe 7 Α 13
-I NPU T
Mod e
GND
mV
VO L TS/DI V
VO L TS Coun te r
Polarity
.000
Pu s h b u ttons ca n cele d
BW
FULL
Time B ase Plug-In
Time/Div
.05 μs
If t h e remaining co n t rols need to be c h ec ke d for pro p er
setti n gs o r if ste p 23 is bei n g u sed as sta rti n g p oi n t fo r p arti
ally calibrating t h e Ty pe 7Α 13, r efe r to t h e Prelimi n a r y Pr oce d u re exce p t as follows :
Typ e 7Α 13
+I NPU T
Mod e
DC
.2 ms
g . C HE C K-Fo r 0 .25 d ivisio n (25 m V ) o r less dis p lay amp litu de. T h is is eq u ivale nt to α CMRR of 2,000 :1 or g reate r .
h. AD JU ST-C28A (see F ig . 5-9 Β ) slig h tly fo r minim u m display amplit ud e .
23 .
C h ec k T rigger Amplifier Gain an d Ste p
R es ponse
α . Test e qu i p ment setup, wit h connections made at comp letion of ste p 23c, is s h own in F ig . 5-23 .
Perfo r mance C h ec k /Calib r ation-Type 7Α 13
Polarized
Viewer or
Viewing Hood
I
In d icato r
Oscii l osce, ίι e
',instant Amplitude
3 .45 ns
C h arge Ca ble
, .ne
G
ρ : ϊ^
5-23 . Initial set u p and t h e eq u i p ment required fo r
-00 Calibration
Fixtu re}
Co nstant A m pl it u d e
Sine Wave Ge nerator
(Type 191)
5 ns
50-oh m
Coaxial Gable
Fig .
W a ve Generator
c
h ec ki n g t h e t r igger and signal amplifier res ponse desc ribed in steps 23 t hro ug h 26 .
b . I nam
sert t h e Plug-In Exte n d e r between t h e Type 7 Α 13 and
th e indicator oscillosco p e L eft Ve r t p l u g-i n connector.
c. Re peat ste p s 17 ι t h ro ug h 17g exce p t t h at t h e generator
s h o u l d be set to obtain α 6- d ivision p ea k -to- p ea k d is p lay
am p litud e .
p litu d e of t h e wi d e p u lse t r igge r waveform . Th e am p li
tu d e of t h e wi d e p u lse s h ou l d be wit h in 15% (-±-0 .9 d ivision)
of t h e 6-division signal am p lit u d e u sed as α reference in ste p
23d .
d . N ote t h e am p litud e of t h e n a rr ow pu lse or c h ec k th e
risetime by meas u ring t h e time interval b etween t h e 10%
a n d 90% am p litu de p oints on t h e rising portion of t h e wi d e
p u lse waveform .
e . Partially remove t he Plug-In E xten d er (with Ty p e 7Α 13
attach ed ) . Interc h a nge t h e signal and trigger coaxial cables
on t h e Plug-In Exte nd e r . Fig . 5-24 s h ows t h e locations of th e
coaxial cables on t h e rig h t si d e of t h e Plug-In Exte n d er . Th e
cables on t h e left side of t he exten d e r are in simila r locatio n s . (After i n terc h anging t h e cables, th e signal from p ins
All and Β 11 on t h e Ty pe 7 Α 13 O u tp u t board connector
will be a p p lied via th e coaxial cables to t h e trigger connectors on eac h si d e of t h e Plug-In Exten d er . T h e t r igger
from pins Α 13 an d 1313 on t h e O u t p u t boa rd will now be
a pp lie d via th e coaxial cables to t h e signal connectors on
eac h si d e of t h e Plug-In E xten d er) .
f . R e-insert th e Plug-in E xten d er (with Ty p e 7 Α 13 attac h ed)
i nto t h e i nd icator oscilloscope.
g . Calibratio n P roced ure Only . C h ec k t h e trigger am p lit u d e to signal am p lit ud e gai n matc h i n g by meas ur ing th e
Cable
~ι
C: ο ί
c α b1 Ρ
lnterc h and e th esεt cables
to
d isplay
th e trigger
Fig . 5-24. Right si de view of t h e Plug-In E xtend e r showing the
locatio n s of the signal and t rigge r con n ectors with their associated
coaxial cables . Left side view (not s h own ) is th e same .
P erfo r mance
C h ec k /Calibration-Ty p e 7 Α 13
ΝΟΤΕ
T h is
15% gain matc h ing tolerance is given as α
g u i d e to c h ec k t h e instr u ment for correct o peration
an d is not an instr u ment s p ecification . T h ere are
ot h er ways to c h ec k trigger gain if it is desired to
p erform t h is c h ec k o u t of se q u ence using anot h er
signal so u rce . For exam p le, use t h e in d icator oscillosco p e 4-m V calibrator as α refere n ce signal an d
p erform t h e c h ec k after ste p 8 .
h. Set t h e generator o u t p u t am p lit u d e to obtai n α 6-d ivision
p ea k-to- pea k wi d e
p u lse dis p lay am p iltu d e.
i . C HE C K-System risetime u sing t h e trigger. T h e measu rement is p erformed as follows : U si n g α wi d e pu lse am p litu de of 6 divisions as α reference, t h e narrow pu lse am p litu de s h o u l d be 0 .4 d ivision (or less) lower i n am p lit u d e th an
t h e am p lit u d e of t h e p u lse noted i n ste p 23d . For exam p le,
if ste p 23d pu lse am p litud e is 4 .9 divisions, t h e trigger p u lse
am p lit u de s ho u l d be 4 .5 divisions o r more i n am p lit u d e . T he
risetime of th e wi d e p u lse, meas u red from t h e 10% to t h e
90% p oi n ts, s h o u ld be abo u t 0 .1 ns slower (or less) for t h e
trigger wavefo r m as com p ared to t h e signal waveform . For
exam p le, if th e signal wavefo r m h ad α risetime of 3 .5 ns, th e
risetime of t h e trigger waveform s h o u l d be 3 .6 ητ or less .
ΝΟΤΕ
The
risetime meas u rements are given as α g u i d e
to c h ec k t h e instr u ment for correct o p eration an d
is not an instr u ment s p ecification .
Ι . R etu rn t h e sig n al an d trigge r coaxial cables on th e
Plug-In E xte n d e r to t h eir origi n al connections .
k . Set t h e Ty p e 106 controls to t h e settings given in ste p
17 h an d use ste p 17 h as α g u i d e for a pp lying t h e signal to
t h e Ty p e 7Α 13 . Leave t h e VO L TS/DI V switc h at 10 m V .
Ι . C hec k t h at th e dis p lay is 6 d ivision s p ea k to p ea k in
am p litu d e in t h e 40 ns to 50 ns region w h en u sing α swee p
rate of 10 ητ / d iv.
m . Positio n t h e d is p lay 2 d ivisio n s below t h e to p of t h e
gratic u le and meas u re t h e total p ea k to p ea k aberration in
t h e form of overs h oot, ro u n d ing, ringi n g, or tilt, ex p ressed as
α p e r centage of sq u are-wave am p lit u de . Excl u d e t h e t h ic kness of t h e trace in th e meas u rement . U se t h is i n formation
as α g u i d e to c h ec k t h e trigger aberratio ns in th e p roced u re
th at follows .
η . Interc h ange th e sig n al an d trigger coaxial cables on
th e Plug-in E xte n d er to p e r mit viewi n g t h e trigger.
Fig . 5-25 . C RT d is p lay obtained when checking h ig h-f requ e n cy
upper-limit sine-wave res p onse . Swee p rate is 50 μ s/ d iv.
ΝΟΤΕ
Th e
aberration tolerance is given as α g u i d e to
c h ec k t h e instr u ment for correct o p eration an d is
not an instr u ment s p ecification .
q . Disconnect t h e sig n al a n d
t ur n
off t h e Ty p e 106 ge n era-
ο . Reset th e generato r to obtain α 6- d ivision d is p lay am pl it u de .
to r.
C HE C K-System aberration u sing t h e trigger . Meas ur e
total p ea k to p ea k aberratio n in th e form of overs h oot,
ro u ndi n g, ringing, or tilt, ex p resse d as α p e rcentage of sq u arewave am p litud e .
24, Check Trigger Am p lifier High-Frequency
Sine W ave Response
ρ.
th e
T h e t r igger waveform s h o u l d a ppear ve r y similar to t h e
sig n al waveform noted i n step 23 η . T h e pea k to p ea k abe r ration s h o u ld be no greater t h a n -h4%, -4%, or α total t h at
does n ot exceed 6% p ea k to pea k .
α . Set t h e controls as follows :
Time
B ase
Plug-in
Mag n ifier
Χ1
Time/Div
50 μs
P e rformance Ch ec k /Calib ration-Typ e 7 Α 13
26. C h eck Signal Amplifier 5-MHz B andwid t h
Constant Am p litud e Signal Gene rator
(067-0532-00 Calib ration Fixt u re)
Fr eq u ency dial
Am p lit u d e
Cal
b . Apply t h e 3-MHz sine wave sig n al f rom t h e 067-053200 gene rato r t h ro u g h α 10 Χ atten u ato r a nd 50-o h m te r mi nation to th e Ty pe 7 Α 13 +I NPU T co nn ector.
ε . Ad ju st t h e ge n e r ato r V ariable (Am p litu d e) co n t r ol to
obtain α d is p lay 8 d ivisions i n am p lit u d e . T h is is t h e r efe re n ce
am p litu d e (see F ig . 5-25 Α ).
R ange
switc h to 65-500 .
e . Wit h o u t c h a n gi n g t h e gene r ator o u tp ut am p lit u d e, i ncrease t h e o u tp u t freq u e n cy u ntil t h e ve rtical deflectio n of
t h e d isplay is red u ced to 5 .66 d ivisio n s (see F ig . 5-25 Β) . Th is
is t h e 30% d ow n voltage point t hat is e qu ivale nt to the
-3 d B poi n t .
f . Cbe
HE C K-O u t pu t freq u ency sh o u l d
h ig h e r .
100 MHz
or
h . I nterc h a n ge t h e coaxial ca b les on t he Plug-In Extend e r
to r etur n t h e cables to th ei r res p ective co nn ecto r s . T h e PlugIn Exte nd e r will n ot be n eed e d for th e r emai n i n g steps .
R esponse
α
50 kH z Only
Range
Am p lit u de
V a riable
5
Am p litu d e
Power
Cal"
R a n ge
Ra n ge
fre q u e ncy
Disco nn ect th e sig n al a nd
t urn
50-500 m V
On
b . Apply t h e generato r sig n al th ro u g h α 5- ns coaxial ca b le
a n d 50-oh m te r mi n atio n to th e Ty pe 7Α 13 +I NPU T con n ecto r .
Range
switc h to 3 .6-8.
e . Slowly i n c r ease th e Ty p e 191 fre q u e ncy u ntil t he am p lit u d e of t h e d is p lay is 5 .66 d ivisio n s p ea k to p ea k n am p litude.
i
f . C HE C K-Th e setti n g of th e Ty pe 191 Fre que n cy d ial . T h e
fre q u e ncy s ho u ld be betwee n 4 .5 MHz and 5 .5 MHz.
g . Disconnect t h e signal and t u r n off t h e ge n e rato r .
Settings
Ty p e 7Α 13
co n trol to obtain
switc h to 65-500 .
d . W it ho u t c h a n gi n g t h e ge n e r ator o u tp ut am p lit u de, i ncrease t h e o u tp u t freq u e n cy u ntil t h e ve rtical d eflectio n of
th e d is p1
lay is red u ce d to 5 .66 d ivision s .
f.
Freq u e n cy
3.0
Set t h e ge n erator F re qu en cy
e . C HECK-O u t pu t
h ig h e r .
3 .6 MHz
Wh e n pe rfo rmi n g α com p lete proced ure c h a n ge t h e followi n g control settings a n d proceed wit h step 27.
95
b. Set9
th e ge n erato r V a r iab le (Am p lit u d e)
d is p lay 8 d ivisio n s i n am p litu d e.
ε.
Fr e q u ency dial
Control
α . Set t h e 057-0532-00 generato r con trols as follows :
R ange
Typ e 191
CO MPAR ISO N V O LTAG E AD JU ST MEN TS
25. C h eck Signal Amplifier Hig h - F req u ency
Freq u ency
.5 ms
d . Set th e Ty p e 191 F re qu e n cy
g . R emove t h e Plug-In Exten d e r a nd i n se r t th e Ty p e 7 Α 13
d i r ectly into t h e Left Ve r t p l u g-in com pa rtment of t h e i n d icato r oscillosco p e . Leave t h e signal a pp lie d to t h e Type 7 Α 13 .
d ial
Time/Div
i
Th is u p p er limit ba n d wi d t h c h ec k is give n as α g u ide
to c h ec k t h e instr u ment for correct operation a nd is
n ot an instr u ment s p ecification .
F requ e n cy
Time B ase Plug-in
c . Set th e Ty p e 191 V ariable co nt rol to obtai n α d is play
8 d ivisio n s pea k to p ea k n am p litude. U se t h e positio n ing
co ntrols to positio n t h e display fo r best viewing .
ΝΟΤΕ
Wave
mV
5 MHz
BW
Power
On
d . Set t h e generato r Fr eq u ency
Type 7Α 13
VOLTS/DIV
Fre10
qu ency R a nge
3.0 (MHz)
Sine
R esponse
α . Set t h e controls as follows :
.5
V ar ia ble
Wave
Sine
95
sh o u ld
be
100 MH z
off th e gen e rator .
or
V O LTS Co u nte r
P ola r ity
+I NPU T
Mode
VO L TS/DI V
.999 p l u s 1 d igit to i nd icate
9.000 (e qu ivalen t to α V c
o utpu t of 10 V)
+
GND
mV
If t h e r emai n i n g co n t r ols n ee d to b e ch ec ke d fo r p ro p e r setti n gs o r if step 27 is bei n g u sed as α sta rti n g point fo r partially calib r ati n g t he Ty pe 7Α 13, refe r to t h e P relimi n a r y Proced u re .
P e rformance Check/ Cal ί bration-Ty p e 7Α 13
Fig .
27 .
C h ec k /A d ju st
5-26 . Initial set up
10- V olt
showi n g
equipment r equ i red fo r p erfo r ming steps 27 t h ro u g h 31 .
Calibration
0
α . Test e q u i p me n t set u p, wit h connections ma d e at com-
rea d ju st R 573 to obtain α com p romise setting between t h e +
an d - P olarity null in d ications .
p letion of ste p 27d , is s h own in F ig . 5-26 .
b . U si n g th e P OSITIO N cont r ol, p osition t h e trace to coinci d e wit h t h e gratic u l e cente r line .
c.
P reset
t h e P recision DC V oltmeter to meas u re +10 volts.
d . Connect t h e P recisio n DC V oltmeter between t h e V c
O UT 0-10 V j ac k a n d Grid on th e Ty p e 7Α 13 .
e . C HE C K - F or α null rea d i n g at +10V on t h e P recision
DC Voltmeter, wit h i n α tole rance of -4--0 .015V . (T h is is
eq u ivalent to 0.1% times 10 V p l u s 5 mV .)
f . Sim u ltaneo u sly set th e Ty p e 7Α 13 and
Voltmeter P olarity switc h es to - .
P recision
DC
g . C HEC K- F or α null readi n g at -10V on t h e P recisio n
DC Voltmeter, with in α tolerance of -0 .015V.
h . Calibratio n P roce d u re Only .
sco p e on its rig h t si d e.
L ay th e ind icator oscillo-
i . AD JU ST-10 V Cal co n trol R573 (see Fig . 5-27) to obtain
α null i nd ication on th e Pr ecision DC V oltmeter. Sim u ltane
o u sly set t h e Ty p e 7Α 13 an d P recisio n DC V oltmeter P olarity
switc h es to + . R e p eat ste ps 27e t h ro u g h 27i . If necessary,
Fi g . 5-27 . Com pa rison voltage a d j u stme n t locatio ns on t h e o u t put
boa rd .
Perfo r mance C h eck /Calib r ation-Typ e 7Α 13
28 .
C h ec k /A d ju st
1- Volt
Calibration
0
TABLE 5-7
Com p a r ison Voltage L inearity
α . Decrease t h e se n sitivity of t h e Pr ecision DC V oltmeter
a nd set it to meas u re -1 V . C hec k t h at t h e Ty p e 7Α 13 Ρο-
VO L TS Co u nter
larity switc h is set to - .
b . Set t h e Ty p e 7 Α 13 V O L TS Co u nter to i n d icate 0 .999 p l u s
o n e digit to p rovide α V c o u t pu t of one volt .
0 .100
0 .300
d. CHE C K - For α null rea d i n g at -1 V on t h e Precisio n DC
0 .500
V oltmeter, wit h in α tolera n ce of ±0 .006 V . (T h is is eq u ivalent
to 0 .1 % times 1 V plus 5 m V .)
e . Sim u ltaneo u sly set t h e Ty p e 7Α 13 and Pr ecisio n DC V oltmete r Polarity switch es to + .
f. C HE C K - For α null readi n g at +1 V on t h e P recisio n
DC V oltmete r , wit h in α tolerance of -0 .006V .
g . AD JU ST-1 V Cal control R575 (see F ig . 5-27) to obtain
α null in d ication on t h e P recision DC V oltmeter . Sim u ltaneously set t h e Ty p e 7 Α 13 and Pr ecision DC V oltmeter P ola r ity
switc h es to - . R e p eat ste ps 28d t hr o u g h 289 . If necessary
read ju st R 575 to obtai n α com p romise setti n g between t h e
+ and - P olarity null indications .
h. I N T ER ACTIO N - R e p eat ste p s 27 an d 28 (up to ste p
289) several times d u e to i n teractio n between R573 an d R 575 .
i . Calib r ation P roce d u re Only . P lace t h e i nd icato r oscillosco p e i n its u p r ig h t p osition .
29 .
C h ec k Com p arison
α . Ch ec k th at t h e Ty p e 7 Α 13 an d Pr ecisio n DC Voltmeter
b . Set t h e Ty p e 7 Α 13 V O L TS Co unter to 0 .100 a nd preset
t h e P recision DC Voltmeter to meas u re 100 m V .
c . C HE C K -U sing Table 5-7 as α g u i d e, c h ec k t h e acc u racy
of t h e V O L TS Co u nter rea d o u t. U se t h e P recision DC V oltmete r to meas u re th e voltages . T h e voltage ra n ge given i n
t h e table is t h e tolera n ce and is d e r ived as follows : 0 .1 %
times t h e V O L TS Co u nte r i n d ication p l u s 5 m V .
30. C h ec k Volts Co u nter Mec h anical Bac k lash
α . Decrease t h e sensitivity of t h e P recisio n DC V oltmeter
an d set it to meas u re +5 .5V . Ch ec k that t h e Ty p e 7 Α 13
Polarity switc h is set to + .
b . Set t h e V O L TS Co un ter to i nd icate 5 .300 .
+0 .3946V to +0 .4054V
+0 .4945V to +0 .5055V
0 .600
+0 .5944V to +0 .6056V
0 .700
+0 .6943V to +0 .7057V
0 .800
+0 .7942V to +0 .8058V
0 .900
+0 .8941 V to +0 .9059V
1 .000
+0 .994V to +1 .006V
2 .000
+1 .993V to +2 .007V
3 .000
+2 .992V to +3 .008V
4 .000
+3 .991 V to +4 .009 V
5 .000
+4.990V to +5 .010V
6 .000
+5.989 V to +6 .011 V
+6 .988V to +7 .012V
7 .000
8 .000
+7.987V to +8 .013V
9 .999 p l u s 1 digit
+8 .986V to +9 .014V
+9 .985V to +10 .015V
`F I NE cont r ol set fully counterclockwise so t hat t h e last t hree d igits
indicate all ze ros fo r th is reading an d all remai ni n g r ea di ngs thr o u g h
9 .000 .
Voltage Linearity
P ola r ity switc h es are set to + .
+0 .2947V to +0 .3053V
0 .400
9 .000
V oltage O u t pu t
at V c O U T 0-10 V J ac k
+0 .0949V to +0 .1051 V
+0 .1948V to +0 .2052V
0 .200
I n crease t h e sensitivity of t h e P recision DC V oltmete r .
c.
I
NOTE
Wh ile p erformi n g t h is ste p , do not rotate t h e F I NE
co n trol co u ntercloc kwise at any time . Bu t, d o rotate
t h e FI NE control slowly in t h e cloc k wise d irection .
As soon as t h e null p oint is reac h ed immediately
sto p rotating t h e control .
d . N ote t h e exact V O LTS Co un te r rea d i n g ; i .e ., note t h e
exact p osition of th e last d igit by estimating t h e rea d ing to
t h e 4t h d ecimal p lace .
e . Decrease t h e se nsitivity of t h e P recision DC Voltmete r
an d set th e V O LTS Co u nter to indicate 5 .700 .
f. R otate t h e F I NE control slowly co u ntercloc k wise toward
5 .500 . Wh e n app ro p riate, increase t h e sensitivity of t he P recisio n DC V oltmeter to obtai n o ptim u m rea d o u t r esol u tio n . As
t h e P recision DC V oltmeter reac h es th e null in d icatio n , sto p
r otating t h e F I NE co n t rol in th e co un tercloc kwise d irection .
g.
N ote
t h e exact V O L TS Co un ter r ea d i n g .
h . C HE C K -T h e d iffere n ce between th e V O L TS Co u nte r
rea d i n g note d in ste p 30d and t h e rea d i n g obtaine d in ste p
c . R otate t h e Ty pe 7 Α 13 F I NE control slowly clockwise to30g s h o u ld be less t h an 1 d igit. F or exam p le, if ste p 30d
wa rd 5 .500 . Wh en a p p ro p r iate, inc r ease t h e se n sitivity of th e
rea d ing is 5 .5004 (estimated 4th decimal p lace rea d i n g) a n d
Precision DC V oltmeter to obtain o ptim u m reado u t resol u tion .
ste p 309 rea d ing is 5 .501, t h e d ifference betwee n th e two
As th e Prea
recision DC Voltmeter reac h es t h e null in d icatio n , sto p
d ings is 0 .0006, w h ic h is with in t h e 1 digit tolerance for
rotating t h e F I NE co n tr ol i n th e cloc kwise d irection .
correct i nstr u ment o p e ration .
P e rformance Chec k /Calibration-Ty pe 7Α 13
Indicator
Oscilloscope
Fig .
5-28 .
E q u i p ment
ε . Set th e +I NPU T
ΝΟΤΕ
Th e one d igit tolerance is given as α g u i d e to correct instr u ment o p eration an d is not an instr u ment
s p ecification .
i.
31 .
Disco nn ect a nd t u rn off t h e
C h ec k E lectrical
P recision
-I NPU T
Mode
Mode
VO L TS/DI
1
V
V A R IA BLE (V O LTS/DI V)
PULL VA R F O R X10
Vc R A N G E
VAR BAL
switc h to V c .
d. C HE C K-F or trace s h ift t h at does not excee d 0 .5 d ivision . Excl ud e th e th ic kn ess of th e trace w h e n ma k ing t h is
meas u rement .
N OIS E
Zero
b . If desired , c h ec k th e settings of t h e remaining Ty p e 7Α 13
co n t rols :
+I NPU T
Mo d e
DC V oltmeter.
α . Set t h e V O LTS Co u nter to 0 .000 .
Pola r ity
set up fo r ste p 32 .
+
GND
GND
mV
Cal
Pu s h ed in
&
O V ER D R I VE
RE COVERY C HE C K S
Control Settings
Wh e n p erformi n g α com p lete p roced ure, c h ange t h e following co n trol setti n gs a nd p rocee d wit h ste p 32 .
Type
Polarity
+I NPU T
-I NPU T
Mod e
Mod e
BW
P ro p erly a d ju sted
Triggering
BW
5 MHz
Time/Div
Trace centered
P OSITIO N
7 Α 13
Pu s h bu ttons cancele d
DC
GND
FULL
Time B ase U nit
Mod e
A u to
10 μs
P erfo rmance C h ec k /Calibration-Ty p e 7 Α 13
®
If t h e remain i n g co n trols need to
settings o r if ste p 32 is bei n g used
partially calib rati n g t he Type 7Α 13,
Proced u re exce p t as follows :
Ty p e 7Α13
VOLTS/DI V
1
be c hec k ed for p r ope r
as α sta rti n g p oi n t for
refer to th e Pr elimina r y
mV
32 . C h ec k Noise'
α . Test e qu i pme n t set u p, wit h connections made at comp letion of ste p 32 ε , is s how n in F ig . 5-28 .
b . Set th e Ty pe 106 S q u are-W ave Ge n e rato r controls as
fo l lows :
R e petitio n
Rate
Range
Mu lti plier
( Α ) Too m uch trace separation, step 32e .
1
Symmetry
+T r ansistion Am p lit ude
H i Amplit u d e/ Fast
H i Am p lit u d e
P ower
1 kH z
R ise
M i d r ange
Mi d range
Fast Rise
N ot
a pp licable
On
c . Apply t h e 1 kH z signal from t h e Ty p e 106 -}-O u t p ut
connector th ro u g h two 10 Χ atte nu ators (con necte d in se ries),
α 5 Χ atte nu ato r, α 5- n s coaxial cable, an d α 50-o h m te rmination to th e Ty p e 7Α13 +I NPU T connector. F ig . 5-28 s h ows
t h e co nn ecti n g se q u e n ce for t h e items .
d . Set t h e Ty p e 106 +T r a nsition Am p lit u d e control to p rovide two se pa rate t races on t h e C RT . Set t h e Level/Slo pe on
t h e Time Base un it to obtain α free-r u nning swee p. Th ese
traces a r e ca u sed by th e u p p er a n d lowe r exc ursio n s of th e
sq u are waves being pr ese nted on t h e free ru nning swee p.
e . Rotate th e +T ransition Amplit u d e co n trol slowly cou ntercloc k wise to ju st eliminate th e da rk line between t h e two
traces . U se F ig . 5-29 Α a n d Β as g u i d es .
( Β ) Desire d dis p lay, ste p 32e.
f.
Maxi m m
Allowa ble r"~
Am p litud e
4 Div
(C)
~~
ta"γ~γ
Ε~
Ac tual
Am plitud e
ίιmαη
Meas ur i n g the sq uare wave a mp litu de, step 32 h .
F ig . 5-29 .
running .
N oise measu re m ent displays . Sweep rate : 10 μs/ d iv, f ree
Set th e V O L TS/DI V switc h to 10 m V .
g . Remove two 10 Χ atte nu ato rs so th at t h e 5 Χ atte nu ato r
is conn ecte d to t h e Type 106 +O utpu t co nn ector. T h is i n c r eases th e sig nal drive by 100 times, allowi n g mo re acc urate
meas urement of d isplaye d n oise .
h. C HE C K-N oise amplit u d e . Meas u re t h e dista n ce b etween t r ace cente r s in mV (see Fig . 5-29C) . T h is is th e f r eer u nning s q u a re-wave amplit u d e . Divide t h e am p litud e in m V
by 100 . T h e res u lt s h o u ld be 400 μ V , o r less, noise tangentially meas ur ed . Division by 100 com p e n sates fo r t h e removed
atte nu ato r s .
U sing Fig . 5-29C as an exam p le, th e act u al sq u a re-wave
am p litud e is 2 .3 d ivisions or 23 m V. 23 m V d ivided by 100
is 0.23 m V o r 230 μV of d isplaye d noise. T h is am p lit u de is
wit h in t h e 400 μ V n oise re q u i r ement .
i.
Disco nn ect t h e sign al f r om t h e Ty p e 7Α 13 .
'V al Ga ru ts a n d C h arles Samuel, "M eas ur i n g Co nve n tio n al Oscillosco pe Noise", Te k tr onix, Inc ., O rego n , 1969. Pages 8-11, April 1969
"Te ksco p e", Vol . 1, No . 2 .
5-35
P e r for mance C h ec k /Calibration-Ty p e 7Α 13
Power cable is connected
to the indicator oscilloscow~
rear panel Probe Power Con nector .
10verd , ive Recovery
Test Fixtu r e
42-inch
5β-ohm Coaxial Cable
Fig .
5-30 . Equipment setup requ i r e d fo r performing ste p 23 .
Control Settings
Wh en p e r forming α com p lete p roced u re, c h ange th e following control settings an d p rocee d wit h ste p 33 .
Ty p e 7Α 13
2
VO L TS/DI
V
V
Triggering
Time/Div
Mode
N egative
slo p e region
Ρ- Ρ A uto
1 ms
If t h e remai n ing controls need to be c h ec k e d for p ro p er
settings, refer to t h e P relimina r y P roced u re exce pt as follows :
+I NPU T
BW
Mo d e
33. C h ec k
Ty pe 7Α13
Overd rive
DC
FULL
Recovery Time
α . Test e q u i p ment set u p , wit h connections ma d e at com-
p letion of ste p 33f, is s h ow n i n F ig . 5-30 .
ι . Connect th e Overd rive R ecovery test fixt u re p ower
cable to t h e in d icator oscillosco p e rear p anel P robe P ower
con n ecto r.
d . Set t h e Overd rive R ecovery test fixt u re Polarity switc h
to + a n d t h e L evel control to its f u lly co u nterclockwise p ositio n .
e . Set th e Ty p e 106 controls as follows :
Time B ase Plug-in
Level/Slo p e (Triggering)
Power Cable
b . Connect t h e Overd rive R ecovery test fixt u re o u t p u t
connecto r to t h e Ty p e 7 Α 13 +I NPU T connector .
R e petition
Rate Range
Mu lti p lier
5
Symmetry
Am p lit ud e
' H i Am p litu d e/ F ast
Fast R ise cont r ols
100 Hz
R ise
M i d range
M i d range
H i Am p lit u d e
N ot
A pp licable
f . Apply t h e signal from t h e Ty p e 106 h ig h am p litud e O u tp u t co n nector t h ro u g h α G R-to- BN C a d a p ter an d α 42-inc h
50-o h m coaxial cable to t h e Switc h Drive co nn ector on t h e
Over d rive R ecovery test fixtur e .
g . A d ju st t h e Ty p e 106 Symmetry, Mu lti p lier, an d (if necessary) t h e Am p lit u d e controls for a u d ible reed reasona n ce .
NOTE
Do not excee d t h e mi d range setting of t h e Am p lit u d e control . E xcessive am p lit u d e will ca u se t h e
reed d rive coil to over h eat .
Per formance C h eck/Calibration-Ty pe 7Α 13
IMMETO
m
m rrace returns to
ωrt h in 0.5 dίν
Ι
=NONE
DiMMMMMMMMMM
5
g raticule ce n ter
Α
,~ιιιιιωiι ίίΙ. W
MMMNNMMMMM
EMMOMMMEMM
( Α)
Refere nce amplit ud e,
(ρ)
ste p 33h . Swee p rate: 1 ms/d iv .
+I NPUT + ροΙα rίtγ over d rive recovery time waveform, step 33 ο.
Swee p rate : 20 μs/div .
Μιι"r
EMMEMEME
~
"
G rat ί c u le
ME
W"
WW
""
"""Mr OWNr_r0
Ιι Centerline
σΝ""""""ι"""ιιιι
EEMMWMMMMM
mm,
Trace return s to
within 1
M
", 0 ce nter
μ"
"
ωίth ί
B ottom of DιsΡ Ια
t1t>"
Grat=vl.ί ne~~
ME
( Β) Bottom of disp lay p ro perly positio n ed, step 33 j . Swee p rate : 1 ( Ε) + I NPUT - p olarity ove rdrive recovery time waveform, ste p
ms/d iv .
33 ω. Sweep rate : 0.2 μs/ div .
low
_A6106uis"
"""rA"""""'
"" ~τmw1 " MEMO'
Α
""W MME""
EM""
""Μ""Μ
ς ) +I rate :T0.2+ .
(Swee
olarity o e
s/div
μ
p
NPU
p
v rdrive recove r y waveform,
Fig. 5-31 . Exam ples of wavefo rms obtained w h e n
2 V/ d ίν ; remai n ing wavefor ms a re 1 mV/div .
check ing
step 33m.
LA, ~._ I
WFACA'Sw9b,
Μ
/"ι
ΡΑΜΜ--"
NEMEME
-I NPUT -p ola rity over drive recovery ti me wavefo r m, step 33 τ.
Swee p rate: 0.2 μs/d iv .
(F)
overdr ive r ecovery time .
V e rtical d eflectio n
factor fo r wavefo rms (Α) an d (Β) is
5-37
P erformance Check/Calibration-Type 7Α 13
h . A d just the Overdrive R ecovery test fixture L evel control
to obtain α 5-division display am p litu d e (see F ig . 5-31 Α ) .
i.
If n ecessary, re p eat step 339 to obtain α steady d is p lay .
j.
U sing the position controls, p osition the bottom of the
dis p lay to coincide with t he graticule centerline an d to start
at the 1-d ivision graticule line (see F ig . 5-31 Β) .
k . Set the Time/Div switch to .2 μ s, increase the trace intensity an d u se the time base P ostion control to re p osition if
n ecessary, the bottom front corner of the d isp lay to start at
the 1-division graticule line that will be u se d as α time reference .
Ι . Set the Type 7Α 13 V OLTS/DIV switch to 1 mV . Set the
Overdrive R ecovery test fixture Polarity switch to '0' and u se
the POSITION control to p osition t he trace to graticule center.
This is the zero am p litu d e r eference . Set the Overd rive R ecovery test fixture Polarity switch to + .
m . CHECK- That the trace returns to within 1 .5 divisions of
graticule vertical center within α recovery time of 1 μτ (5
h orizontal d ivisions) when measure d with res p ect to the 1division g raticule line as shown n Fig . 5-31C .
i
η . Set the Time/Div switch to 20 μs and d ecrease the trace
intensity .
ο . C HECK-That the trace returns to within 0 .5 d ivision
of graticule vertical center within α r ecovery time of 0 .1 ms .
Recovery time is measured with res pect to the 1- d ivision g raticule line (see F ig . 5-31D) .
ρ . Set the controls as follows :
2γ
Time Base Plug-in
L evel/Slo pe (Triggering)
Time/Div
t . Set the Ty p e 7 Α 13 V OLTS/DIV switch to 1 mV . Set the
Overdrive R ecovery test fixture Polarity switch to '0' and u se
the POSITION control to p osition the trace to graticule center .
Set the Over d rive test fixture P olarity switch to + .
υ . C HECK-That the trace r eturns to within 1 .5 divisions of
graticule vertical center within α r ecovery time of 1 μs when
measured with respect to the 1- d ivision graticule line (see F ig .
5-31 Ε ) .
ν , Set the Time/Div switch to
intensity .
P ositive slo p e region
1 ms
Overd rive R ecovery Test F ixture
P olarity
q. Check that the d is p lay is 5 d ivisions in am p litu d e . If
n ecessary, r ea d just the Over d rive R ecovery test fixture Level
control to obtain the p ro p er am p litud e .
r . Position t he top of the d is p lay to coinci d e with gratic ule center an d to start at the 1- d ivision g raticule line .
20 ρι s
and
d ecrease
the trace
ω . C HECK-That the trace returns to within 0 .5 division of
graticule vertical center within α recovery time of 0 .1 ms .
Recovery time is measured with respect to the 1-division graticule line as d escribe d p reviously . The waveform will be
similar to F ig . 5-31D except that it will be inverte d .
χ . Set the controls as follows :
Typ e 7Α13
+INPUT
-INPUT
Mode
Mode
GND
DC
V OLTS/DIV
2V
Time Base Plug-In
L evel/Slo p e (Triggering)
Ty p e 7 Α 13
V OLTS/DIV
s . Set the Time/Div switch to .2 μs, increase the trace
intensity and use the time base P osition control to re p osi
tion, if necessary, the to p front corner of d is p lay to start
at the 1-division graticule line .
Time/Div
N egative
1 ms
slo p e region
γ . Disconnect the Overd rive R ecovery test fixture from the
+ INPUT connector and reconnect it to the -INPUT connector. Do not change any other connections .
τ . C HECK-Using ste p 33h an d ste p s 33j through 33ω as
α g uid e, check t he overd rive recovery time for t he -INPUT.
F ig . 5-31F s hows an exam p le of α -INPUT - polarity overd rive recovery time waveform .
αα . Disconnect an d turn off all e q ui p ment.
This com p letes the P erformance Check and/or Calibration
p rocedure . if remove d , re p lace the si d e covers on the Ty pe
7Α 13 ; re p lace the left si d e and bottom covers on the in d ica
for oscillosco p e . If the Ty pe 7Α 13 h as been completely
checke d a n d adjusted to the tolerances given in this p roce d ure, it will meet or exceed the s pecifications given in
Section 1 .
P A RTS
L IST A BBREV IATIO NS
ΒΗΒ
bin d i n g h ead brass
BH S
int
binding h ea d steel
19
capmet
.
ca p acito r
cer
ce ramic
com
com p
p osition
internal
mtg
connector
ΟΗΒ
C RT
cat h ode- ray tu be
O HS
DE
d ia
d iv
elect .
EM C
EMT
ext
F & Ι
FHB
d o u ble e n d
d iameter
divisio n
PH S
p lstc
PM C
poly
electrolytic, metal cased
p rec
electrolytic, metal t u b u lar
PT
exter n al
ΡΤΜ
foc u s and intensity
RHB
flat h ea d brass
RH S
F il ΗΒ
filliste r h ea d brass
HH S
h ex h ea d steel
h ex soc k et b rass
hdw
ΡΗΒ
electrolytic
FH Ssi
flat h ea d steel
metal
OD
conn
co
cs k
u nters u n k
lengt h or long
.
SE
mo u nting h ardware
o u tside d iamete r
oval h ead brass
oval h ead steel
pan h ead brass
pan h ead steel
p lastic
pa per, metal cased
polystyren e
p recisio n
p a p er, t u b u la r
pa pe r or p lastic, t u b u la r, molde d
r o u nd h ead b rass
ro u n d h ead steel
n gle e n d
S N o r S/ Ν
se r ial n u mbe r
THS
tru ss h ead steel
Fswitc
il H S
fillister h ead steel
SW
h
h TC
h eig h t or h ig h
tem p erat u re com p e n sated
h ex .
h exago n al
ΤΗΒ
tr u ss head brass
ΗΗΒ
h ex h ead brass
t hk
t h ic k
HS B
H SS
ID
i n cd
h ex soc k et steel
inside
d iameter
inca n descent
tub.
var
ω
WW
t u b u lar
variable
wi d e or wid t h
wire-wo u n d
P AR TS
O RD ERING INF O RMATION
R e p lacement parts are available from
Office or re p rese n tative .
o r th ro u g h yo ur local Te ktro n ix, I n c . F iel d
C h anges to Te k tronix instr u ments are sometimes ma d e to accommo d ate im p roved
com p onents as t h ey become available, an d to give you t h e benefit of t h e latest circ u it
im p rovements develo p e d in o ur enginee r ing d e p artment. It is t h erefore im p ortant, w h en
or d ering p arts, to incl u d e t h e following information in your ord er : P art n u mber, instr u me n t
ty p e o r nu mber, se r ial or mo d el nu mbe r , an d mo d ification nu mbe r if a pp licable .
If α p a r t you h ave o r d e r e d h as been re p lace d wit h α new or im p rove d p art, yo u r
local Te k tronix, Inc . F ield Office or re p resentative will contact you concerning any c h ange
in p a rt n u mbe r .
SPE CIA L N OT E S
AND
SYMB O L S
X000
Part
first a dd e d at t h is serial nu mbe r
ΟΟΧ
P art
r emoved afte r th is serial n u mber
*000-0000-00
U se 000-0000-00
Aste r is k p rece d ing Te ktronix P art Nu mber in d icates man u fact u re d by
or fo r Te k t r o n ix, Inc ., or r ewor k ed o r c h ec k ed com p onents .
Pa
rt nu mbe r indicate d is d irect re p lacement .
Sc r ewdriver ad ju stment .
Cont r ol, a d ju stment or co nn ector .
Title
INDEX OF ELECTRICAL PARTS LIST
Page No.
CHASSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
POLARITY Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
ATTENUATOR Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
OUTPUT Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
DECIMAL LIGHTS Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
INPUT Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
BANDWIDTH Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Ty p e 7Α 13
S ECTIO N 6
ELECT RICA L PA RTS
LIST
Val u es a re fixed u nless ma rked Variable .
Te k t r o n ix
P art No .
C k t . No .
Se r ial/M odel No .
Disc
Eff
Description
C H ASSIS
Bu lb
DS47
N eo n
150-0084-00
2 ΑΑ
Ca pacitors
Tolera n ce ±20% un less ot h erwise i n d icated .
*295-0116-00
C1 1
C2 Ce
283-0000-00
*295-0116-00
C21 1
C22 Ce
283-0000-00
C582Cer
283-0000-00
0 .019 1,,F
0 .001 1 ι F
0 .019 F ι F
0 .001 1 ι F
0.001 j ιF
MT
r
MT
r
Co n necto rs
Jl
J 21
131-0679-00
131-0679-00
BN C, rece ptacle, elect r ical
BN C, rece ptacle, elect r ical
I nducto rs
L2
*108-0536-00
*108-0535-00
L4
L25 2
L262
165/ιΗ (bl u e)
165 ΙιΗ (b rown)
1-27'=
L 40 2
L42°-
Resisto rs
Resistors are fixe d, com positio n , ±10%
R175
R287
R309
R435i
311-0641-00
311-0467-00
311-0361-00
311-0880-00
'C1 a nd C21 furn is h e d as α matche d pair .
'Furnis h ed
as
'Furn is h e d
as α unit with 540 .
α
un it wit h
Main C h assis
Cable .
un
less ot h e rwise i n dicated .
200 k Ω , V a r
100 k Ω , V a r
500 k Ω , Va r
5 k Ω , V ar
600 V
500 V
600 V
500 V
500 V
2%
2%
Electrical P a rts
List-Type
7Α 13
C H ASSIS (cont)
Te k tronix
P art No .
C k t . No .
Serial/ Model No .
Disc
Descri p tion
Eff
Switches
Wired or Un wired
311-0880-00
S404
S50
260-1033-00
580
260-0816-00
V O LTS/DI V
R ota ry
Sli d e
P O LAR ITY Circ u it
PULL V A R F O R Χ l0 Vc
B oard Assembly
Com p lete
*670-1042-00
B oard
Bu lb
*150-0093-01
DS570
Incan d esce nt
T3/4, selected
Semicon ductor Device, Dio d e
VR 570
152-0171-00
Ze n er
1 Ν 944
Pu s h b u tto n
Vc
11 .7 V
5%
Switc h
Wire d or
S570'
U nwire d
*670-1042-00
P O LA R ITY
ATTENU ATO R Circ u it Boar d Assembly
Com p lete Board
*670-1043-00
Bu lbs
DS1
DS21
*150-0057-01
*150-0057-01
Incan d escent
I n candescent
7153AS15, selecte d
7153AS15, selected
Capacitors
Tole rance ±20% un less ot h e rwise i n d icated .
C3
C4
GA
C58
C5C
283-0175-00
283-0156-00
281-0064-00
281-0081-00
281-0627-00
'Furnished as α
'See
6- 2
un it wit h R435 .
M ec h a n ical P arts
L
ist fo r re p laceme n t parts .
10 pF
1000 p F
0 .25-1 .5 p F, Va r
1 .8-13 p F, Va r
1 pF
Cer
Cer
Tu b.
Air
Cer
200 V
200 V
600 V
5%
+100%-0%
Electrical P arts L ist-Ty p e 7Α 13
B oard
ATT ENU ATO R Circ u it
C k t . No .
Te k tronix
P art No .
Assembly
(cont)
Se rial/ M odel No .
Disc
Eff
Descri p tio n
Ca p acito rs (co n t)
C5D
C6
C7
C8A
C8 B
283-0159-00
283-0156-00
283-0156-00
281-0064-00
281-0080-00
18 p F
1000 p F
1000 p F
0.25-1 .5 pF, V ar
1 .7-11 pF, Var
C8C
C8D
C8 E
C10
283-0159-00
283-0160-00
281-0627-00
283-0156-00
18 p F
1 .5 pF
1 pF
1000 p F
C12
C13
C14
C15
C23
283-0156-00
281-0537-00
281-0064-00
283-0156-00
283-0175-00
1000 pF
0.68 p F
0 .25-1 .5 p F, Var
1000 p F
10 p F
Cer
Ce r
Ce r
Tu b .
Air
Cer
Cer
Ce r
Ce r
50 V
200 V
200 V
50
50
600
200
V
ν
V
V
5%
+100%-0%
+100%-0%
5%
10%
+100%-0%
Ce r
Cer
Tu b .
Ce r
Ce r
200 V
500 V
+100%-0%
200 V
200 V
+100%-0%
5%
Ce r
200 V
+100%-0%
500 V
50 V
.1 pF
5%
Ce r
Ce r
Tu b .
Air
200 V
200 V
+100%-0%
+100%-0%
Cer
Cer
Ce r
Cer
Ce r
50 V
50 V
600 V
200 V
200 V
5%
10%
200 V
500 V
C24
283-0156-00
C25A
281-0064-00
C25 B
281-0081-00
C25C
Cer
281-0661-00
±0
C25D
283-0159-00
1000 p F
0 .25-1 .5 pF, V ar
1 .8-13 PF, Va r
0 .8 pF
18 p F
C26
C27
C28A
C28 B
283-0156-00
283-0156-00
281-0064-00
281-0080-00
1000 pF
1000 pF
0 .25-1 .5 p F , Var
1 .7-11 PF, V a r
C28C
C28D
C28 E
C30
C31
283-0159-00
283-0160-00
281-0627-00
283-0156-00
283-0156-00
18 p F
1 .5 p F
1 pF
1000 p F
1000 p F
C32
C33
C34
283-0156-00
281-0537-00
281-0064-00
1000 p F
0 .68 p F
0 .25-1 .5 pF, V ar
Cer
Cer
Tub .
G ro u nded
G r o u n d ed
Gro un ded
G r o u nded
Gro u nded
G r o und ed
spd t & s p st, 15
s pdt & s pst, 15
s pd t, 15 V DC
spd t & s p st, 15
spd t & s pst, 15
s pdt, 15 V DC
Tu b .
Ai r
Cer
+100%-0%
+100%-0%
+100%-0%
Relays
Κ6
Κ7
Κ 10
Κ 26
Κ 27
Κ 30
*148-0055-00
*148-0054-00
*148-0050-00
*148-0055-00
*148-0054-00
*148-0050-00
A r mat ur e,
A rmat u re,
Armat u re,
Armat u re,
Armat u re,
A r mat ure,
V DC
V DC
V DC
V DC
6- 3
E lectrical Pa r ts List-Ty p e
7Α 13
ATT ENU ATO R Circ u it
Te k t r onix
P art No .
C k t . No .
Board
Assembly (cont)
Serial/Model No .
Disc
Descri p tio n
E ff
Resistors
R esisto r s are fixed, com p ositio n , -!-10% u nless ot h e rwise in d icated .
110Q
4 .3 Ω
47 Ω
900 k Ω
110Q
RI
317-0105-00
R2
307-0112-00
R3
317-0470-00
R SA°
325-0004-00
317-0111-00
R5 C
'/8
'/4
'/8
'/α
'/Β
W
W
W
W
W
Prec
W
P rec
1 /10%
'/4 W
P rec
72
'/α W
Pr ec
1/10 0/.
Pr ec
5%
5%
1 /10%
R 5D'
R5E
R6
R7
R SAs
325-0020-00
311-0635-00
322-0625-01
311-0607-00
325-0004-00
110 .6 kΩ
1 k Ω , Va r
995 kΩ
10 k Ω , V ar
900 k Ω
R 8D
R8E
R 8 F°
R 8G
R10
317-0511-00
317-0241-00
325-0038-00
311-0634-00
317-0101-00
510 0
2400
110.8 k Ω
500 Ω , V ar
100 Ω
'/8 W
'/8 W
R14
R 21
R 22
R 23
R25A'3
321-0181-00
317-0105-00
307-0112-00
317-0470-00
325-0004-00
750 Ω
1 ΜΩ
4 .3 Ω
47 Ω
900 k Ω
'/8
'/8
'/4
'/8
'/4
R25C
R25D'
R 26
R 27
R28AS
317-0201-00
325-0020-00
322-0625-01
311-0607-00
325-0004-00
200 Ω
111 k Ω
995 k Ω
10 k Ω , V a r
900 k Ω
'/8 W
R 28D
R 28 E
R 28 F °
R 28G
R30
R34
317-0511-00
317-0151-00
325-0038-00
311-0634-00
317-0101-00
321-0181-00
510 Ω
150 Ω
110.8 k Ω
500 Ω , V ar
1000
750 Ω
'/Β
W
5
'/8 W
P rec
1%
5%
5%
5%
1 /10%
W
'/4 W
P rec
Prec
5%
1/10%
'/2
'/α W
P rec
1/10%
'/8 W
'/8 W
'/8 W
Prec
5%
5%
1/10 0/.
'/8 W
'/Β W
Pr ec
5
1%
W
W
W
W
W
'/Β
Prec
Switc h es
Wired or Un wired
S1 1 °
s101)
S21 1 °
` R SA a nd R25A f urn is he d as α match ed
' R SD a nd R 25D f urnis he d
"R 8A a nd
Pu sh b u tto n
*670-1043-00
*670-1043-00
*670-1043-00
R 28A f urn is h ed
as
as
Plug-in
Pushbutton
pair .
α matc h ed pai r .
α matche d pai r.
'R 8 F a nd R 28F f urn is h e d as α m atch e d pai r.
"See Mec h a n ical P a rts L ist
6-4
fo r r e p laceme nt
parts .
5%
5%
5
1/10%
5%
+AC-G N D-DC
ATTENUATOR
-AC-G Ν D-DC
Parts L ist-Type 7 Α 13
E lectrical
O U TPU T
Ck t . No .
Te k tronix
P a rt No .
Circ u it
Board
Assembly
Serial/Mo d el No .
Disc
Eff
Desc r i ption
Com p lete B oard
*670-1044-00
Capacito r s
Tolera n ce ±20% un less ot h erwise ind icate d .
C40
C41
C42
C43
C44
283-0000-00
283-0000-00
283-0000-00
283-0000-00
283-0000-00
0 .001
0 .001
0 .001
0 .001
0 .001
μF
1,L F
μF
μF
μF
Cer
Cer
Cer
Cer
Cer
500
500
500
500
500
V
V
V
V
V
C45
283-0000-00
C46
283-0000-00
C47
283-0000-00
C48
283-0000-00
C49Ce
283-0000-00
0 .001
0 .001
0 .001
0 .001
0 .001
μF
μF
μF
μF
Ιι F
Cer
Ce r
Ce r
Ce r
r
500
500
500
500
500
V
V
V
V
V
C50
C51
C52
C53
C54
470 p F
0 .001 μ F
470 pF
470 p F
470 p F
Cer
Cer
Cer
Ce r
Ce r
500
500
500
500
500
V
V
V
V
ν
C55
283-0000-00
C300
281-0524-00
C301
281-0523-00
C304
283-0032-00
C308Ce
283-0000-00
0.001 μ F
150 pF
100 pF
470 pF
0 .001 μι F
Ce r
Ce r
Cer
Ce r
r
500 V
500 V
350 V
500 V
500 V
C311
C313
C315
C318
C319
281-0616-00
281-0618-00
281-0645-00
281-0618-00
281-0618-00
6 .8 p F
4 .7 pF
8 .2 pF
4 .7 p F
4 .7 ρ F
Ce r
Ce r
Cer
Cer
Ce r
200 V
200 V
500 V
200 V
200 V
C326
C328
C337
C355
C364
283-0108-00
281-0616-00
283-0103-00
283-0000-00
283-0193-00
220 ρ F
6 .8 pF
180 pF
0 .001 μ &
510 pF
Cer
Cer
Cer
Cer
Ce r
200
200
500
500
100
V
V
V
V
ν
10%
C372
281-0650-00
C374
281-0523-00
C375
283-0000-00
C404
283-0032-00
C408Cer
283-0000-00
18 pF
100 p F
0 .001 μ F
470 pF
0 .001 /_ι F
Ce r
Cer
Ce r
Ce r
200
350
500
500
500
V
V
V
V
V
10%
C411
C413
C415
C418
C426
6 .8 p F
4 .7 pF
8 .2 p F
4 .7 p F
220 pF
Ce r
Cer
Ce r
Ce r
Ce r
200
200
500
200
200
V
V
V
V
V
283-0032-00
283-0000-00
283-0032-00
283-0032-00
283-0032-00
281-0616-00
281-0618-00
281-0645-00
281-0618-00
283-0108-00
5%
5%
5%
5%
5%
±0 .5
±0 .25
±0 .5
±0 .5
pF
pF
pF
pF
5%
2%
5%
±0 .5 pF
-0.25 pF
±0 .5 pF
10%
6- 5
Electrical Pa r ts List-Ty p e 7 Α 13
O U TPU T
C k t . No .
Te k tro n ix
P a rt No .
Circ u it
Board
Assembly (cont)
Se r ial/ Mo d el No .
Disc
E ff
Desc r i p tion
Ca p acitors (cont)
C428
C432
C434
C437
C439
281-0616-00
281-0523-00
283-0000-00
283-0103-00
281-0612-00
6 .8 p F
100 pF
0 .001 IcF
180 p F
5 .6 p F
Ce r
Ce r
Cer
Ce r
Ce r
200 V
350 V
500 V
500 V
200 V
0 .001 1,L F
5 .6 pF
100 pF
0 .001 /-ι F
5 .6 p F
Cer
Ce r
Ce r
r
Ce r
500 V
200 V
350 V
500 V
200 V
C455
C456
C464
C4475
C477
283-0000-00
281-0612-00
281-0523-00
283-0000-00
Ce
281-0612-00
C490
C505
C506
C514
C515
283-0000-00
Ce
0 .001 Ι.ι F
290-0340-00
10 IcF
Cer
283-0134-00
0 .47' ι F
283-0000-00
0 .001 μ F
283-0000-00
0 .001 1- F
C517
C518
C519
C522
C530
283-0177-00
1 IcF
290-0201-00
100 μ F
283-0000-00
0 .001 IcF
283-0000-00
Cer
0 .001 'ι F
283-0000-00
Ce
0 .001 Ιι F
C532
C537
C542
C543
C548
283-0000-00
0 .001
Cer
283-0000-00
0 .001
Cer
283-0177-00
1 Ιι F
Cer
283-0000-00
0 .001
283-0000-00
0 .001
C549
C552
C553
C578
C580
C581
283-0000-00
283-0134-00
290-0340-00
283-0059-00
Ce
283-0000-00
283-0000-00
Ce
r
E lect.
Cer
Ce r
Ce r
E lect .
Ce r
r
/ιF
Ιι F
; ιF
,,,F
Cer
Ce r
0 .001 ;al`
0 .47 μ F
10 ; ι F
1' ι F
0 .001 IcF
0.001 Ιι F
Cer
Cer
E lect.
r
Cer
r
500
50
50
500
500
V
V
V
V
V
25
15
500
500
500
V
V
V
V
V
500 V
500 V
25 V
500 V
500 V
500
50
50
25
500
500
V
V
V
V
V
V
5%
±0 .5 p F
±0 .5 pF
±0 .5 p F
10%
+ 80%-20%
+80%-20%
+80%-20%
+80%-20%
10%
+80%-20%
Semicond u cto r Device, Diod es
C R 40
C R 41
C R 42
C R 43
C R 45
*152-0185-00
*152-0185-00
*152-0185-00
*152-0185-00
*152-0185-00
Silicon
Silicon
Silicon
Silicon
Silico n
C R46
C R 364
C R 365
C R 401
*152-0185-00
*152-0185-00
*152-0185-00
152-0271-00
Silico n
Silicon
Silico n
Silico n
6-6
Re p laceable
by
by
R e p laceable by
Re p laceable by
Re p laceable by
R e p laceable
1 Ν 4152
11\14152
I N4152
1 Ν 4152
1 Ν 4152
R e p laceable by I N4152
b y 1N4152
R e p laceable b y I N4152
V oltage Variable Ca p acitance
V-1 OE
R e p laceable
Electrical P a r ts
O U T PU T
Te k tro n ix
P a r t No .
C k t . No .
Circ u it B oard Assembly
L
ist-Ty p e 7Α 13
(cont)
Se r ial/ M odel No .
Disc
E ff
Descri p tion
Relays
Κ47
Κ48
Κ490
*148-0034-00
*148-0034-00
*148-0034-00
A r mat ur e, dpdt, 15V DC
Armat u re, d pdt, 15V DC
A r mat u re, d p dt, 15 V DC
Ind u cto rs
364
464
L503
L505
L515
*108-0095-01
*108-0095-01
276-0507-00
276-0507-00
276-0507-00
L517
L540
L542
L550
L552
276-0507-00
276-0507-00
276-0507-00
276-0507-00
276-0507-00
L
L
1 .4 ΙιιΗ
1 .4 μΗ
Co re, fe rr amic s u pp ressor
Co r e, fe rr amic s u pp ressor
Co r e, fer ramic s u pp resso r
Co r e,
Co r e,
Co r e,
Co r e,
Co r e,
fe r ramic
fe r ramic
fe rr amic
fe rr amic
fe r ramic
s u pp resso r
s u pp ressor
s u p p resso r
s uppresso r
s u pp resso r
LR47
LR48
LR 504
LR507
LR 508
*108-0520-00
*108-0520-00
*108-0537-00
*108-0520-00
*108-0520-00
2 .2 It Η
2 .2 ρΗ
200 IM
2 .2 i ιΗ
2,2,,,H
(wo un d
(wo u nd
(wo un d
(wo und
(wo und
on
on
on
on
on
α
α
α
α
α
22
22
30
22
22
Ω, 1/4 W, 5%
Ω , 1/4 W, 5%
Ω , 1/Β W, 5%
Ω , 1/4 W, 5%
Ω , 1/4 W, 5%
LR 509
LR 511
LR 512
LR 514
LR 516
*108-0520-00
*108-0519-00
*108-0519-00
*108-0520-00
*108-0537-00
2 .2 pH
2 .2 1,,H
2 .21 ιΗ
2 .2 jι, Η
200 1ιΗ
(wo u nd
(wo un d
(wo un d
(wo u nd
(wo un d
on
on
on
on
on
α
α
α
α
α
22
10
10
22
30
Ω,
Ω,
Ω,
Ω,
Ω,
5%
5%
5%
5%
5%
resisto r )
resistor)
r esisto r )
r esistor)
resisto r )
LR 520
LR 530
LR 537
LR541
LR 544
*108-0520-00
*108-0520-00
*108-0520-00
*108-0537-00
*108-0520-00
2 .2 1 ιΗ
2 .2 1,H
2 .2 IM
200 , ιΗ
2 .2 ρΗ
(wo und
(wo und
(wo u nd
(wo un d
(wou nd
on
on
on
on
on
α
α
α
α
α
22
22
22
30
22
Ω , 1/4 W, 5%
Ω , 1/4 W, 5%
Ω , '/4 W, 5%
Ω , '/Β W, 5%
Ω , 7/4 W, 5%
resisto r )
resisto r )
resisto r )
r esisto r )
r esisto r )
*108-0520-00
*108-0520-00
*108-0520-00
*108-0537-00
*108-0520-00
2 .2 / ιΗ (wo und
2 .2 IM (wo u nd
2.2 /ιΗ (wo u nd
200 ; ιΗ (wo u nd
2 .2 pH (wo und
on
on
on
on
on
α
α
α
α
α
22
22
22
30
22
Ω , 1/4 W,
Ω , 1/4 W,
Ω , 1/4 W,
Ω , 1/Β W,
Ω , 1/4 W,
5%
5%
5%
5%
5%
resisto r)
r esistor)
r esistor)
r esisto r)
resistor)
*108-0520-00
*108-0520-00
2 .2 ΙιΗ (wo u nd on α 22 Ω , y4 W, 5%
2.2 pH (wo u nd on α 22 Ω ,
W, 5%
resisto r)
resisto r)
LR545
LR 548
LR549
LR551
LR554
LR 555
LR557
-
1 /4
1 /4
1 /4
' /4
'/Β
W,
W,
W,
W,
W,
r esisto r )
resisto r )
resisto r )
resisto r )
resisto r )
Transistors
Q40
*150-0190-01
Te
Q300
*151-0268-00
Q320
*151-0267-00
Q330
151-0202-00
Q340
151-0202-00
Silico n
Silico n
Silicon
Silicon
Silicon
k S p ec
D u al, Te k
D u al, Te k
2N4261
2 Ν 4261
S p ec
S p ec
6-7
Electrical
P a rts L ist-Ty pe
7Α 13
O UT PU T
C k t . No .
Te k tro n ix
P art No .
Circ u it
Boa rd
Assembly (cont)
Serial/ Mo d el No .
Disc
E ff
T ransisto rs
Desc r i p tio n
(co n t)
Q350
*151-0212-00
Silicon
Te k S p ec
Q3'0
Selected
*151-0259-00
Silico n
from 2 Ν 3563
*151-0212-00
Silicon
Te k Sp ec
Q370
*151-0259-00
Silicon
Selected from 2 Ν 3563
Q380
Q430
151-0202-00
Silicon
2N4261
Q440
151-0202-00
Silicon
2N4261
*151-0212-00
Silicon
Q450
Te k S p ec
*151-0259-00
Q460 Selected
Silico n
from 2 Ν 3563
Q470
*151-0212-00
Silicon
Te k S p ec
0480 Selecte
*151-0259-00
Silico n
d from 2 Ν 3563
Q520
Q530
Te k S p ec
21\14122
Silico n
Silicon
*151-0190-01
151-0220-00
R esistors
Resisto r s are fixe d , composition, ±10% un less ot h e rwise i nd icated .
R41
R42
R45
R46
R47
321-0215-00
321-0215-00
315-0123-00
315-0363-00
315-0104-00
1 .69 k Ω
1 .69 k Ω
12 k Ω
36 k Ω
100 k Ω
1/8 W
1 /8 W
R49
R51 Α
R51 Β
R52A
R52 B
321-0292-00
315-0154-00
315-0753-00
321-0344-00
315-0154-00
10 .7 k Ω
150 k Ω
75 k Ω
37 .4 k Ω
150 k 9
1/8 W
1/4 W
1/4 W
1/Θ W
1/4 W
R53
R54
R55
R56
R57
315-0753-00
315-0154-00
315-0513-00
315-0753-00
315-0154-00
75 k Ω
150 k Ω
51 k Ω
75 k S2
150 k Ω
1/4 W
1 /4 W
1/4 W
1/4 W
1/4 W
R58
R59
R177
R300
R301
315-0753-00
321-0344-00
311-0816-00
311-0635-00
321-0032-00
75 k Ω
37 .4 k Ω
2 .5 k Ω , Va r
1 kΩ , V a r
21 Ω
1/4 W
1/8 W
Prec
5%
1
1/8 W
Pr ec
1
R302
R 303
R304
R305
R306
321-0182-00
307-0124-00
317-0271-00
322-0212-00
317-0124-00
768 Ω
5 kΩ
270 Ω
1 .58 k Ω
120 k Ω
1/8 W
T he r mal
1/Θ W
1/4 W
1/8 W
Prec
1 °%
Pr ec
5
1 °%
5%
R307
R308
R311
R312
R313
311-0827-00
317-0683-00
321-0051-00
321-0702-00
325-0043-00
250 Ω , Var
68 k Ω
33 .2 .(2
30 Ω
22 .5 Ω
1/4 W
1/4 W
Prec
Pr ec
1
1
5%
5%
5°%
Prec
1
5
5%
1 °%
5%
1/4 W
1/8
'/Θ
1/8
1/8
W
W
W
W
Prec
5%
5%
5%
5%
5%
Prec
Prec
Pr ec
5%
1 °%
1 /4 %
V4 °%
E lect r ical Pa rts
O UTPU T
C k t . No .
Te k t r onix
P art No .
Circ u it
Board
Assembly (cont)
Serial/ Mo d el No .
Disc
E ff
Resisto r s
Desc r i ptio n
(cont)
R 315
R 316
R 318
R 319
R 320
321-0039-00
321-0793-03
321-0058-00
317-0130-00
322-0205-00
24 .9 Ω
37 .5 Ω
39 .2 Ω
139
1 .33 k Ω
'/α ω
1/α W
1/α W
'/α ω
1/4 W
R 322
R 323
R 326
R 327
R 328
317-0561-00
317-0332-00
317-0471-00
321-0097-00
321-0120-00
560 Ω
3 .3 k Ω
470 Ω
100 Ω
174 Ω
1/α
1/α
'/α
1/α
'/α
R 329
R 331
R 332
R 334
R 335
311-0828-00
321-0181-00
321-0055-00
315-0512-00
311-0607-00
5 k Ω , V ar
750 Ω
36.5 Ω
5 .1 k Ω
10 k Ω , Var
R 337
R 340
R 344
R 350
R 351
317-0391-00
321-0088-00
317-0101-00
321-0039-00
321-0168-00
390 Ω
80 .6 Ω
100 Ω
24 .9 Ω
5499
1/α
1/α
1/α
1/α
1/α
R 354
R 357
R 358
R 360
R 362
315-0151-00
317-0132-00
317-0272-00
311-0643-00
321-0147-00
150 Ω
1 .3 kΩ
2 .7 kΩ
50 Ω , V ar
332 Ω
1/4 W
R 370
R 371
R 372
R 373
R 374
315-0470-00
311-0605-00
321-0024-00
321-0153-00
317-0151-00
47 Ω
200 Ω ,
17 .4 Ω
383 Ω
150 Ω
1/4 W
R 375
315-0151-00
R 377
317-0132-00
317-0272-00
R 378
R 380
311-0643-00
R 382
321-0147-00
List-Type 7AI3
Var
P rec
Pr ec
1
'/4
1
5%
1
W
Pr ec
Pr ec
5
5%
5
1
1%
/α ω
1/α W
Pr ec
Pr ec
P rec
W
W
ω
ω
1/4 W
W
W
W
W
W
P rec
Prec
Prec
P rec
1/α W
1/α W
1/α W
5
1
5
1
1
5%
5%
5%
1/α W
1/α W
/α ω
1
1
5%
P rec
1%
5%
P rec
Prec
1
1%
5
150 Ω
1 .3 kΩ
2 .7 kΩ
50 Ω , V a r
332 Ω
1 /4 W
1/α W
1/α W
/α ω
P rec
1%
1
1%
5
1
5%
5%
5%
5%
R 401
R 402
R 404
R 407
R 408
321-0032-00
321-0182-00
317-0271-00
322-0215-00
317-0683-00
21 Ω
768 Ω
270 Ω
1 .69 k Ω
68 k Ω
1/α W
1 /α W
1 /α W
1 /4 W
1/α W
Prec
R411
R 413
R415
R416
R 418
321-0051-00
325-0043-00
321-0039-00
321-0793-03
321-0058-00
33 .2
22 .5
24 .9
37.5
39 .2
1/α
/α
yα
1/α
1 /α
W
Prec
W
W
P rec
Prec
Pr ec
Ω
Ω
Ω
Ω
Ω
ω
ω
Pr ec
Pr ec
Pr ec
1
1/4
1%
'/α %
1%
6- 9
E lectrical Pa rts
List-Type 7A13
O UTPU T
C k t . No .
Te k tr onix
P a rt No .
Circ u it
B oa rd
Assembly
Se rial/ Mod el No .
Disc
Descri p tion
E ff
R esisto r s
(cont)
(co n t )
P rec
1
5
1
1%
1
W
W
W
Pr ec
5%
5
5%
1%
ω
Pr ec
W
W
Prec
'/4 W
'/8 W
P rec
R420
R426
R 427
R 428
R 431
322-0205-00
317-0471-00
321-0097-00
321-0120-00
321-0181-00
1 .33 k Ω
470 Ω
100 Ω
174 Ω
750 Ω
R 432
R 434
R 437
R 439
R 440
311-0609-00
315-0302-00
317-0391-00
317-0121-00
321-0088-00
2 kΩ , Va r
3 kΩ
390 Ω
120 Ω
80 .6 Ω
'/4
'/8
'/8
'/8
W
R451
R454
R456
R 462
R470
321-0168-00
315-0151-00
317-0150-00
321-0147-00
315-0470-00
549 Ω
150 Ω
15 Ω
332 Ω
47 Ω
'/α
'/4
'/8
'/8
'/4
R 473
R 475
R477
R482
R 521
321-0153-00
315-0151-00
317-0047-00
321-0147-00
321-0212-00
383 Ω
150 Ω
4 .7 Ω
332 Ω
1 .58 k Ω
'/8
'/4
'/8
'/8
'/α
W
W
W
W
P rec
R 522
R 523
R 525
R 531
R 532
321-0226-00
315-0241-00
315-0681-00
321-0226-00
321-0212-00
2 .21 k Ω
2409
680 Ω
2 .21 k Ω
1 .58 k Ω
'/8 W
'/4 W
'/4 W
'/8 W
'/α ω
P rec
R533
R 535
R 570
R 572
R 573
315-0241-00
301-0241-00
308-0530-00
308-0530-00
311-0558-00
240 Ω
240 Ω
4 .51 k Ω
4 .51 k Ω
500 Ω , V a r
'/4 W
'/2 W
1 ω
1 ω
R 574
R575
R576
R 578
R 579
R 580
R 589
R 590
R591
R 592
R593
R 594
R 595
R 596
R 597
R 598
R 599
6- 1 0
'/8 W
'/8 W
'/8 W
W
W
ω
Pr ec
Prec
P rec
P rec
1%
5
5%
1%
5%
1
5%
5%
1%
1
Prec
Prec
1
5%
5
1
1
ωω
ωω
5
5%
1
1
308-0528-00
311-0226-00
308-0316-00
315-0102-00
315-0102-00
315-0103-00
1 .45 k Ω (nominal val u e) Selecte d
500 Ω , V a r
3 .1 kΩ
'/2 W
ωω
'/4 W
1 kΩ
1 kΩ
'/4 W
10 k Ω
'/4 W
1 °/
5%
5%
5%
308-0547-00
1 kΩ
M atc h e d set
E lectrical
O UTPU T
Te k tronix
P art No .
C k t . No .
Circ u it Board
P arts
L
ist-Ty p e 7ΑΙΙ 3
Assembly (cont)
Se r ial/Mo d el No .
Disc
Eff
Descri p tion
Switc h
Wired o r Un wired
S45
M ic ro
260-0760-00
D E CI MA L
L IG HTS Ci r c u it Boar d Assembly
*670-1045-00
Com p lete
Board
I n can d escent
I n ca nd esce n t
I n candescent
I n can d escent
#683,
#683,
#683,
#683,
Bu lbs
DS10
DS65
DS70
DS75
*150-0048-01
*150-0048-01
*150-0048-01
*150-0048-01
selected
selecte d
selecte d
selecte d
R esisto r
R
esistors are fixed , composition, ±10%
R
577"
u
nless ot h e rwise i n dicated .
5 kΩ , V a r
*670-1045-00
Switc h
Wired or
R
575"
U
nwi r ed
ota r y
*670-1045-00
CO MP A R ISO N
R
INPU T Circ u it Boar d Assembly
*670-1046-00
Complete
B oar d
Ca p acito r s
Tole r ance ±20%
u nless
ot h e r wise indicate d .
C60
283-0059-00
C63
283-0000-00
C65Cer
283-0000-00
C66
283-0000-00
C70
283-0000-00
1 μ&
0 .001
0 .001
0 .001
0 .001
μF
Cer
Cer
25 V
500 V
500 V
500 V
500 V
C75Cer
283-0000-00
C102
281-0523-00
C110
281-0525-00
C112
283-0594-00
C113
281-0123-00
0 .001 /ι F
100 pF
470 pF
0 .001 μ F
5-25 pF
Cer
Ce r
Mica
Ce r
500 V
350 V
500 V
100 ν
100 ν
"See
Mecha n ical
Parts
L
μF
I-ι F
ιF
Cer
Ce r
+80 0/o -20%
1
ist fo r r e p lace me nt pa rts .
6- 1 1
E lectrical Pa r ts L ist-Typ e
7Α 13
INPU T Circ u it
C k t . No .
Te k tro n ix
P art No .
B oard
Assembly (cont)
Se r ial/ M odel No .
Disc
Eff
Descri p tion
Ca p acitors (cont )
C117
Cl22
C124
Cl31
C134
C143
C150
C162
C163
C166
C170
C171
C172
Cl76
C178
C181
Cl83
C187
C190
C191
281-0672-00
281-0650-00
281-0064-00
283-0651-00
281-0064-00
283-0026-00
Ce
281-0092-00
281-0064-00
281-0122-00
Ce
283-0000-00
281-0653-00
281-0064-00
283-0000-00
283-0000-00
281-0650-00
11 .4 pF
18 p F
0 .25-1 .5 p F, V ar
430 pF
0 .25-1 .5 pF, Var
Ce r
Cer
Tub .
Mica
Tu b .
500 V
200 V
1
10%
500 V
1%
0 .2 ; ι F
9-35 p F , Va r
0 .25-1 .5 p F , Va r
2 .5-9 pF , Var
0 .001 j ι F
Cer
r
Tu b .
Ce r
r
25 V
100 ν
500 V
Cer
200 V
±1 pF
Cer
Cer
Ce r
500 V
500 V
200 V
10%
Ce r
Ce r
Ce r
Cer
500
350
100
500
200
5%
10%
3 .3 pF
0 .25-1 .5 p F , Va r
0 .001 μ. F
0 .001 al'
18 pF
Cer
283-0000-00
0 .001 'ι F
281-0523-00
100 p F
281-0123-00
5-25 p F , Var
283-0077-00
330 p F
281-0609-00
1 pF
C197
C202
C210
C212
C213
281-0543-00
281-0523-00
281-0525-00
283-0594-00
281-0123-00
270 p F
100 pF
470 p F
0 .001 μ F
5-25-p F , Var
C217
C222
C224
C231
C234
281-0672-00
281-0650-00
281-0064-00
283-0651-00
281-0064-00
11 .4 pF
18 pF
0 .25-1 .5 pF, Var
430 pF
0 .25-1 .5 pF, Va r
C243
C250
C262
C271
C272
C278
C281
C283
C290
C291
C297
C507
C508
C509
C511
6- 1 2
Tu b .
V
V
ν
V
V
Ce r
Cer
Ce r
M ica
Ce r
500 V
350 V
500 V
100V
100V
10%
Cer
Cer
Tub.
ica
Tu b .
500 V
200 V
1%
10%
Ce r
r
Tu b .
Tu b .
r
25 V
500 V
22 p F
0 .001 μ F
100 p F
330 p F
1 pF
Ce r
Ce r
Cer
Ce r
Ce r
200 V
500 V
350 V
500 V
200 V
281-0543-00
270 p F
Cer
283-0000-00
0.001 1 ι F
Ce
283-0000-00
0 .001 Ιι F
Ce
0 .001 Ιι F
283-0000-00
283-0001-00
0 .005 ;ι F
Cer
500 V
500 V
500 V
500 V
500 V
283-0026-00
Ce
281-0092-00
281-0064-00
281-0064-00
Ce
283-0000-00
281-0656-00
283-0000-00
281-0523-00
283-0077-00
281-0609-00
0 .2 μ F
9-35 pF, Va r
0 .25-1 .5 p F , Va r
0 .25-1 .5 p F , Var
0 .001 ' ι F
M
r
r
Ce r
500
V
1
5%
5%
10%
10%
E lectr ical P arts L ist-Typ e 7Α 13
INPU T Circ u it
Ckt.
No .
Te k tronix
P art No .
Board
Assembly (cont)
Serial/ M o d el No .
Disc
E ff
Description
Capacitors (co n t)
C512Cer
283-0001-00
C520
283-0000-00
C527
283-0000-00
C528Ce
283-0178-00
C538Cer
283-0000-00
0 .005 Ιι F
0 .001 μ F
0.001 μ F
0.1 1 ι F
0.001 1 ι F
C544Ce
283-0000-00
C545Ce
283-0000-00
C546Cer
283-0000-00
C554Cer
283-0000-00
C555Cer
283-0000-00
0.001
0 .001
0 .001
0 .001
0.001
283-0000-00
C557Cer
283-0177-00
C562Cer
C565
290-0139-00
C566Cer
283-0177-00
C567
290-0114-00
0.001' ι F
1 Ι-ι F
180 Ιι F
1 Ιι F
47 μ F
C568
283-0177-00
C569Cer
283-0000-00
1 μF
0 .001 Ιι F
500 V
500 V
500 V
100V
500 V
Ce r
Cer
r
1ιF
/ ιF
/ιF
/ι F
/ιF
r
r
E lect .
E
lect .
Cer
500
500
500
500
500
V
V
V
V
V
500
25
6
25
6
V
V
V
V
V
+80%-20%
+80%-20%
+80%-20%
25 V
500 V
+80%-20%
Semicond u cto r Device, Diodes
C R 66
*152-0185-00
C R 67
*152-0185-00
C R 77
*152-0185-00
C R 101
Te
*152-0367-00
R e p laceable
C R 102
Te
*152-0061-00
Silicon
Silico n
Silicon
Silico n
Silico n
VR 103
1
152-0394-00
C R 110
*152-0061-00
C R 112
*152-0061-00
C R 134
*152-0061-00
C R 150"
*153-0039-01
Ze n e r
Silicon
Silicon
Silicon
Silicon
Ν 3046 Β , 1
Te k Spec
Te k Spec
Te k S pec
Tek S pec
C R 152
*152-0185-00
C R 154
*152-0185-00
VR 155
152-0395-00
C R 156
*152-0185-00
152-0395-00
VR 157
1
Silicon
Silicon
Ze n er
Silico n
Zene r
R e p lacea b le
C R 158
*152-0185-00
VR 166
1
152-0395-00
C R 182
*152-0185-00
C R 201
*152-0367-00
C R 202
*152-0061-00
Silicon
Zene r
Silicon
Silicon
Silicon
R eplaceable
by 1 Ν 4152
Ν 749 Α , 400 rn W , 4 .3 V, 5%
R eplaceable by 1 Ν 4152
Te k Spec
Te k S pec
VR 203
152-0394-00
C R 210
*152-0061-00
C R 212
*152-0061-00
C R234
*152-0061-00
*153-0039-01
C R 250' 2
Ze n er
Silicon
Silicon
Silicon
Silicon
1 Ν 3036 Β 1 W, 47 V, 5%
Te k S pec
Tek Spec
Te k Spec
Te k Spec
''C R 150 a nd C R 250 furn is h e d
Α
as
by 1N4152
R e p laceable by 1N4152
R eplaceable by 1N4152
k Sp ec
k Spec
W,
47 V, 5%
by 1 Ν 4152
R e p laceable by 1 Ν 4152
1 Ν 749 Α , 400 m W , 4 .3 V, 5%
R e placeable by 1 Ν 4152
Ν 749 Α , 400 m W, 4 .3 V, 5%
α matc he d p ai r.
6- 1 3
E lect r ical
P a rts
L
ist-Ty pe 7Α 13
INPU T Ci rc u it B oard Assembly
Te k t r o n ix
P art No .
C k t . No .
Serial/Model No .
Disc
Desc r i p tion
E ff
Semiconducto r Device, Diodes
C R252
C R 254
C R 282
(cont)
*152-0185-00
*152-0185-00
*152-0185-00
(cont)
Silico n
Silico n
Silico n
R e p laceable by 1N4152
Re p laceable by 1N4152
R eplaceable by l N4152
Relays
Κ 60 Α
Κ 60 Β
*148-0035-00
*148-0035-00
A r mat ure, s p d t, 15V DC
A r mat ur e, s pdt, 15V DC
Ind u ctors
278
L563
L 564
L 565
L566
276-0507-00
276-0507-00
*120-0382-00
276-0507-00
276-0507-00
Co r e, ferramic s u pp r esso r
Co re, fe rramic s up p ressor
Toroid, 14 t ur ns si n gle
Core, fe r ramic s u p p r esso r
Co re, fe r ramic s u pp resso r
L 567
L568
LR 527
LR 538
LR546
LR 569
*120-0382-00
276-0507-00
*108-0520-00
*108-0520-00
*108-0520-00
*108-0520-00
To r oi d , 14 t u rns single
Co re, fe r ramic s u pp r esso r
2 .2 μΗ (wo u nd on α 22Q,
2 .2 /,,H (wo u n d on α 22 Ω ,
2 .2 ; ιΗ (wo un d on α 22 Ω ,
2 .2 P.H (wo un d on α 22 Ω ,
L
1/4
'/4
'/4
'/4
W, 5% resistor)
W, 5% resistor)
W, 5% r esisto r )
W, 5% r esistor)
Transisto r s
Q60
065
Q70
Q75
Q105
*151-0192-00
151-0254-00
151-0254-00
151-0254-00
151-0220-00
Silico n
Silicon
Silicon
Silicon
Silicon
R e p laceable by MP S 6521
ΤΟ -98
D1 6P4
ΤΟ -98
D16 P 4
ΤΟ -98
D16 P 4
21\14122
151-0250-00
Silicon
2N5184
Q110
Silicon
R eplaceable by 2 Ν 2219
0115
*151-0103-00
Silico n
d f rom 40235
Ql18Selecte
*151-0230-00
FE T
Te k S pec
Ql20"
*153-0559-00
D u al, Te k S p ec
Q130
*151-0268-00
Silicon
Q140
151-0220-00
Silicon
21\14122
Selecte d f r om S E7056
Q1 45"
*153-0576-00
Silicon
f r om 40235
Q152"
Selected
*153-0575-00
Silico n
Q160
*151-0268-00
Silico n
D u al, Te k Sp ec
Q 165
151-0220-00
Silicon
2N4122
"Furn is h e d as α match e d p ai r wit h 0220 .
"Furn is h e d as α matc h e d p ai r wit h 0245 .
`Furn is h e d as α
match e d
p ai r wit h 0252 .
E lect r ical Parts List-Ty p e 7 Α 13
INPU T Circ u it B oa rd Assembly (cont)
C kt .
No .
Te k tronix
P art No .
Serial/ Mo d el No .
Disc
Desc r i p tion
Eff
T r ansistors
(co n t)
Q170"
*153-0574-00
Silico n
Selected
fr om 2 Ν 2219
Q180
*151-0190-01
Silico n
Te
k Spec
Q182
151-0221-00
Silicon
2N4258
Q185
*151-0272-00
Silico n
D u al, Te k Spec
Q195
*151-0272-00
Silicon
D u al, Te k Spec
Q205
Q210
0215
Q218
Q220"
151-0220-00
151-0250-00
*151-0103-00
*151-0230-00
*153-0559-00
Silicon
Silicon
Silicon
Silicon
FET
2N4122
21\15184
R e p laceable by 2 Ν 2219
Selected from 40235
Te k S p ec
0240
Q245"
0252"'
Q255
Q258
151-0220-00
*153-0576-00
*153-0575-00
*151-0103-00
151-0220-00
Silicon
Silicon
Silicon
Silicon
Silicon
2 Ν 4122
Selected from S E 7056
Selected from 40235
Re p laceable by 2 Ν 2219
2N4122
Q270"
*153-0574-00
Silico n
Selected
fr om 2 Ν 2219
Q280
*151-0190-01
Silico n
k Spec
Te
Q282
151-0221-00
Silicon
2N4258
Q500
151-0220-00
Silicon
2N4122
Q505
151-0260-00
Silico n
2 Ν 5189
R esistors
esisto rs are fixed, com p osition, ±10% u nless ot h erwise indicated .
R
R 61
R 63
R 64
R 65
R 66
71
R 72
R 73
R74
R
R75
76
R 77
R 103
R 104
R
315-0822-00
321-0271-00
321-0352-00
321-0404-00
8 .2 k Ω
6 .49 k Ω
45 .3 kΩ
158 k Ω
1/4
1/8
1/8
1/8
W
W
W
W
321-0434-00
321-0349-00
315-0302-00
321-0281-00
321-0377-00
324 k 9
42 .2 kΩ
3 kΩ
8 .2 5 kΩ
82 .5 k Ω
1/8
1/4
1/8
1/8
W
W
W
W
W
P rec
P rec
321-0297-00
315-0512-00
321-0347-00
317-0104-00
323-0318-00
12 .1 k Ω
5 .1 k Ω
40 .2 k Ω
100 k Ω
20 k Ω
1/8 W
1/4 W
1 /8 W
1/8 W
1/2 W
Prec
ι "0170 a nd 0270 fu rn is hed as α matc h e d pair .
"Furnished as α match e d p ai r wit h 0120 .
"Furn is h e d as α matche d pair wit h 0145 .
"Furn is h e d as α matched p ai r wit h Q152 .
P rec
P rec
Pr ec
P rec
Pr ec
Prec
Prec
5
1
1
1
1
1
5%
1
1
1
5%
1
5%
1
E lectrical P a rts List-Ty pe
7 Α 13
INPU T Circuit
C k t . No .
Te k tro n ix
P a r t No .
Boar
d
Assembly (cont)
Serial/ Model No .
Disc
E ff
R esistors
Descri ption
(cont)
W
W
W
W
R1 05
R 109
R 112
R113
R1 15
315-0221-00
323-0304-00
321-0276-00
317-0750-00
317-0101-00
220 Ω
14 .3 kΩ
7 .32 k Ω
75 Ω
100(2
'/4
'/2
'/8
'/8
'/α
ω
5%
1
1
5
5
R 117
R 119
R1 22
R 124
R 126
317-0222-00
317-0181-00
317-0111-00
321-0212-00
321-0190-00
2 .2 k Ω
180 Ω
110Q
1 .58 k Ω
931 Ω
'/α ω
'/8
'/8
ω
ω
P rec
P rec
5%
5
5%
1
1%
R 131
R 134
R 140
R 141
R 143
315-0681-00
321-0195-00
321-0356-00
321-0356-00
321-0308-00
680 Ω
1 .05 kΩ
49 .9 k Ω
49 .9 k Ω
15 .8 k Ω
'/4 W
'/α ω
'/8 W
'/8 W
'/α ω
Pr ec
Pr ec
Pr ec
Pr ec
5
1 °%
1 °%
1 °%
1 °%
R 145
R 147
R 152
R 155
R 156
317-0101-00
308-0527-00
321-0314-00
317-0472-00
315-0103-00
100 Ω
1 .4 k Ω
18 .2 k Ω
4 .7 k Ω
10 k Ω
'/α ω
3
'/8 W
'/8 W
'/4 W
R 157
R 160
R 162
R163
R164
317-0472-00
317-0562-00
321-0099-00
315-0301-00
317-0331-00
4 .7 k Ω
5 .6 k Ω
1050
300 Ω
330 Ω
'/8
'/α
'/8
'/,
'/8
R1 66
R 167
R 168
R169
R1 70
315-0163-00
311-0609-00
317-0202-00
317-0200-00
317-0300-00
16 k Ω
2 kΩ ,
2 kΩ
20 Ω
30 Ω
R 172
R 173
R 174
R1 76
R 178
317-0203-00
311-0497-00
315-0393-00
315-0304-00
321-0077-00
R179
R 180
R] 81
R182
R183
R 184
R 185
R 186
R 187
R 188
6- 1 6
W
W
W
P rec
Pr ec
ωω
Pr ec
W
ω
W
W
W
Pr ec
5
1
1
5%
5%
5
5%
1 °%
5°%
5 °%
'/, W
5%
'/8 W
'/8 W
'/8 W
5%
5
5 °%
20 k Ω
50 k Ω , V a r
39 k Ω
300 k Ω
61 .9 kΩ
'/8 W
5%
W
W
'/8 W
5
5%
1 °%
317-0221-00
317-0752-00
315-0513-00
315-0103-00
315-0302-00
220 Ω
7 .5 k Ω
51 k Ω
10 k Ω
3 kΩ
'/α ω
'/8 W
321-0093-00
321-0047-00
308-0526-00
311-0622-00
321-0095-00
90 .9 Ω
30 .1 9
2.37 k Ω
100 Ω , Va r
95 .3 Ω
Var
'/,
'/,
Prec
5
5°%
5 °%
5 °%
5 °%
'/, W
'/, W
'/,
W
ω
ω
Prec
P rec
ωω
1 °%
1
1
ω
Prec
1 °%
3W
E lectrical Pa rts L ist-Typ e
INPU T Circ u it
Ck t.
No .
Te k tronix
P art No .
B oa rd
Assembly (cont)
Serial/Mo d el No .
Dis c
E ff
Resistors
7Α 13
Descri p tio n
(co n t )
R189
R 190
R191
R 192
R193
323-0193-00
321-0150-00
321-0072-00
321-0072-00
321-0794-03
1 kΩ
357 Ω
54 .9 Ω
54 .9 Ω
67 .5 Ω
1/2 W
ω
ω
ω
1/8 W
Prec
P rec
Prec
P rec
Prec
1
1
1
1
'/,°/
R194
R1 95
R196
R1 97
R198
325-0042-00
322-0193-00
311-0704-00
315-0271-00
315-0101-00
15 Ω
1 kΩ
500 Ω , Va r
270 Ω
100 Ω
'/Θ ω
1 /4 W
Prec
Prec
'/4'/-
R199
R203
R204
R205
R209
321-0120-00
317-0104-00
323-0318-00
315-0221-00
323-0304-00
1740
100 k Ω
20 kΩ
220 Ω
14 .3 k Ω
1/2 W
1/4 W
R212
R213
R215
R217
R219
321-0276-00
317-0750-00
317-0101-00
317-0222-00
317-0181-00
R 222
R224
R226
R231
R234
1 /4 W
1/4
5
5
W
ω
ω
Prec
W
Prec
7 .32 k Ω
75 Ω
100 Ω
2 .2 k Ω
180 Ω
ω
ω
ω
ω
ω
Prec
317-0111-00
321-0212-00
321-0190-00
315-0681-00
321-0195-00
110Q
1 .58 k Ω
931 Ω
680 Ω
1 .05 kΩ
ω
ω
ω
1/4 W
'/Θ ω
R240
R241
R243
R 245
R247
321-0356-00
321-0356-00
321-0308-00
317-0101-00
308-0527-00
49 .9 k Ω
49 .9 kΩ
15 .8 kΩ
100 Ω
1 .4 k Ω
ω
1/8 W
'/Θ ω
1/8
3W
R252
R254
R255
R256
R257
321-0314-00
321-0356-00
321-0356-00
315-0103-00
315-0243-00
18 .2 k Ω
49 .9 k Ω
49 .9 k Ω
10 k Ω
24 k Ω
1 /8 W
1 /8 W
R258
R259
R260
R262
R269
317-0101-00
308-0496-00
317-0562-00
321-0099-00
317-0200-00
100 Ω
1 kΩ
5 .6 k Ω
105 Ω
20 ι2
R272
R278
R 279
R280
R281
317-0203-00
321-0077-00
317-0221-00
317-0752-00
315-0513-00
20 k Ω
61 .9 Ω
220 Ω
7 .5 k Ω
51 k Ω
1/2
W
'/Θ ω
1/4
1/4
1/8
2 .5
'/Θ
1/8
1/8
W
W
Prec
Prec
Prec
Prec
Prec
Pr ec
Prec
ωω
Prec
Prec
Prec
W
W
ωω
W
Prec
ω
W
ω
ω
yθ ω
ω
1/4 W
1%
Prec
1
5%
1
5%
1 °%
1%
5
5%
5%
5
5
1
1
5
1
1 %
1%
1
5
1 °%
1 °%
1 °%
1 °%
5%
5%
5
1
5%
1 °%
5 ο/
5%
1
5
%
5%
5
6- 1 7
Electrical
P ar ts L ist-Typ e
7Α 13
INPU T Circ u it
Te k tronix
P art No .
C k t. No .
B oard
Assembly
(cont)
Se r ial/ Mo d el No .
Disc
Eff
Descri p tio n
R esisto rs
(cont )
'/, W
'/, W
R 282
R 283
R 284
R 285
R 286
315-0103-00
315-0302-00
321-0093-00
321-0047-00
308-0526-00
10 k Ω
3 kΩ
90 .9 Ω
30 .1 Ω
2 .37 k Ω
R 288
R 289
R 290
R 291
R292
311-0433-00
323-0193-00
321-0150-00
321-0072-00
321-0072-00
100Q, V ar
1 kΩ
3570
54 .99
54 .9 Ω
'/8
W
R 293
R 295
R 297
R 299
R 501
321-0794-03
322-0193-00
315-0271-00
321-0120-00
321-0327-00
67 .5 Ω
1 kΩ
270 Ω
174 Ω
24 .9 k Ω
'/Β
'/,
'/,
'/Β
'/8
W
W
W
W
W
Pr ec
R 502
R 503
R 505
R 528
R 563
321-0327-00
315-0822-00
303-0301-00
321-0143-00
*308-0433-00
24 .9 k Ω
8 .2 k Ω
300 Ω
301 Ω
1 Ω
'/8
'/4
1
'/8
W
W
Pr ec
W
P rec
R 565
R 566
317-0510-00
317-0510-00
51 9
51 Ω
'/8 W
'/Β W
BA N D W IDT H
Circu it
*670-1073-00
Board
W
W
3W
Prec
'/2 W
Prec
P rec
WW
P rec
Prec
Pr ec
'/8 W
'/8 W
P rec
Pr ec
Pr ec
W
'/4 W
WW
5%
5%
1 °%
1 °%
1 °%
1
1
1
1
°%
%
°%
%
'/,%
1%
5%
1%
1 °%
1 °%
5°%
5 °%
1 °%
5%
5%
Assembly
Complete
B oar d
Bu lb
DS490
Incan d esce n t Τ 3/4, selected
*150-0093-01
Switch
W ired
S490-°
''See
Mechanical
6- 1 8
or
U nwire d
Pu s h b u tton
*670-1073-00
Parts L ist fo r re placeme n t
BW
parts .
Α
RE ADO U T
L OGIC
Q 40
ω
+ INPUT
M OD E
SWITCH (V I
SE CTIO N 7
DIAG RA MS
and
MEC HA NICAL PARTS ILLU STRATIO NS
Ι Μ 51/00
SWITCHING
C Ι R C υΙΤ /\
T h e following special symbols are u sed on th e d iagrams :
a
Screw d river ad ju stment
F ront
Ο
or rear- panel control or connector .
Refers
to t he indicate d diagram .
Connection sol dered to circu it board.
r--
` Blue line encloses com ponents located on
circuit board.
ω.
-
INPUT
M OD E
SWITCH
ΤΥΡΕ 7ΑΙ 3
r-111
ADO U T
061C
Vς D E CI M A L
L A MP D R I VER
40
α 60
Q65
INP UT
IOD E
ΤίΗ ΟΙ
+ I NP UT
B OOTST R A P
CI R CUIT
Q70
Q75
Ι
Ι
1
I NP UT
ATTENU ATO RO
+
Ι
Ι
ι
Ο
+ I NPU T
SOU R C E
EM ITT ER
F O LL O WER
0.120
Q Ι 3 ΟΑ
+ I NPU T
ATT ENU ATO R
S W ITC H I N G
REL AYS Ο
+ I NPU T
CO N STA N T
CU RREN T
SOU R C E
Q ιαο
7C H ING ~
ίυιτΟΙ
Τ
βια 5
CO MM O N
M OD E
SIG N A L
CL A MP
S UPPLY
+ ιονΟ
R 155
ΤΗ R Ι
ι R ι 58~
C
DI FFERENTIA L
SIG N A L
C L A MP
Q150
Q Ι5
Q Ι 55
Q158
Q250
Q252
DI FFEREN TIAL
CO MPA R ATO R
Q Ι b ΟΑ Q ΙΙοΟΒ
Q165
Q170/
Q z 7o
Ον
-5
VA
- I NP UT
ATT ENU ATO R
S W ITC H I N G
- I NP UT
B OOTST R A P
CIRCUIT
REL AYS
CO N STA N T
C URRENT
SO UR C E
Q255
Ν FυΤ
)D E
iC Η
Vς REF-ID EN T
R 1 Αβ LE
Χιο
ΒΑ
Q258 Ο
SOU R C E
EM
ITT ER
- I NPU T
Ι ν ~ F O LL O WER
ΑΤΤΕΝ U ΑΤΟ R
Ι
1
Q220
Q ι 3 ΟΒ
- I NPU T
CO N STA N T
CU RREN T
SOU RC E
Q240
Q 245Ο
NOTES :
Ι . HE A V Y LINES S H O W SIG N A L f, T R IGG ER FL O W
2 . + INPUT M OD E S W ITC H ι 5 SET To OC ~ - ΙΝΙ
S W ITC H 15 S E T TO C N D .
FEE D B AC K
L I M IT ER
Q ι8 ο
0 ι 82
Q280
Q2 ατ
2
ΧΙ
Χ ΙΟ ΤΑΙ\
S W ITC H I N G
A MPL I F I ER
Q 185 Α Q 185 Β ~
Q19 5 B
/
ΧΙ
3
Χ2
~Χ 5
ΙΝ
SWITCHING
A MPL I F I ER
Ι
Ι Q300 Α Q300B8/
~~ Q3208 Ι
D R I VER
A MPL I F I ER
Γ Ι
Ι
Ι Q330 Q3 d%
444 Ο
3
Ι
Ι
O U TPUT
A M P L I F I ER
ι Q350 Q360
Q450
1 Q460~
SIG N A L
OUT P UT
TO
I N DICATO R
OSCILLOSCOPE
ΧΙ ξ ΧΙΟ
GAI N
ITC H ING
REL AYS<>
TR IGG ER
OUTP U T
SW
)W SIG N A L ξ T R IGG ER FL O W .
W ITC H Ι 5 -SET TO DC ~~ - I NPU T
TO GLAD .
BL OC K
DIAG R AM
ιό69ΙΙ
VO L TAG E A ND WAVEFO RM CO N DITIO N S
DC circuit voltages were measure d wit h α d igital multimeter h aving an
accuracy of 0.1 ο/ο; input impedance is greater t h an 1 k ΜΩ on th e 1 .500 volt
range and 10 ΜΩ on t h e h ig h er ranges . All voltages were measured with
respect to c h assis groun d unless noted ot h erwise .
Waveforms s h own are actual ph otogra p hs ta ken wit h α Te ktronix Oscillosco pe Camera System and Proj ected Graticule . Test oscilloscope* d eflection
factor and sweep rate con ditions are noted adj acent to eac h waveform . AC
cou pling was use d to obtain ph otogra p h s of t he waveform amplitudes. Th e
test oscilloscope was externally triggere d by t h e 4 V calibrator signal th at
was applied from th e Indicator oscillosco pe* to t h e Ty p e 7Α13 and Test
oscilloscope. External triggering enables t he waveform polarity to be sh own
with respect to t h e i n put signal .
Th e test oscilloscope used for obtaining t h e waveform ph otogra ph s h ad
th e following minimum ch aracteristics : Deflection factor, 1 m V/d iv to .1
V/d iv (10 m V/d iv to 1 V/d iv with α 10Χ probe); AC cou pled in put; frequency response, 2 H z to 10 MH z; sweep rate, 0.2 ms/div .
Type 7Α13 Control Settings
CO MPA R ISON VO L TAG E ( Vc)
Polarity
Selector
F I NE
+I NPU T Mode
-I NPU T M o d e
1
VO L TS/DI V
VA R IA BLE ( VO L TS/DI V)
PULL VA R F O R Χ 10 V c RA NG E
VA R BA L
BW
POSITIO N
Ri n
φ (see F ig.2-1, O perating Instructions)
Push buttons released
As is
As is
AC (for waveforms)
G ND (for voltages)
G ND
V
CA L (C W, in d etent)
P ush ed in
As is
5 MH z
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L
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βςφ5
51
DIAGRAMS
ΑΤΤΕΝυΑΤΟR ξ LWITCNING
COMPARISON VO L7AGΕ
GENERATO R
DISTRIBUTION
DIAG R AM Ο
4 7Οη9
R 572
4.5 Γ Κ
- 50 ν
ΤΟ PIN
Ν
- PARTIAL
OUTPUT
B OA R D
TYPE
7A13
COM PA R ISO N
VOLTAG E (Vc)
5575
F
Q
R 575
500
0
Ι Vol_Τ
CAL
ο
ο
F
F
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Ο
Ο
ο
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ο
Ο
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ο
ΑΤΤ F Ν U ΑΤο R ξ. 5WITC Η ING
No-νε :
HEAVY 1-1WES DENOTE
SIG N A L F LOW
DIST R I B UTIO N DIAG RA M
CO MPAR ISO N
VO LTAG E
G ENE RATO R
WL8
} 0 ό9
F IG UR E 1
83
10
lum
72
γ
Τ1
ΤΥΡΕ 7Α13
D I FFEREN TIAL CO MP AR ATO R
EXP L OD E D
URE
1
EX P L OD E D
1 ί'9)
F IG URE A ND I NDEX NUMBERS
Items in t h is sectio n are r efe r enced by fig u re an d i nd ex nu mbe rs to t h e ill u stratio n s w h ich
appear eith er on t h e bac k of t h e d iagrams or on pu llo u t p ages immediately following t h e
diagrams of th e i n str u ctio n ma nu al .
INDENTATION SYST EM
T h is mec h a n ical p a rts list is i nd e n ted to i ndicate item relations h ips .
example of t h e i n d e n tatio n system u se d in t h e Desc r i p tio n col u m n .
F ollowing is an
Assembly a n d /o r Comp one nt
Detail Pa r t of Assembly an d /or Com pon en t
mo un ti n g hardwa re fo r Detail P art
P a r ts of Detail Part
mo un ti n g hardwa re for P a r ts of Detail Par t
mo un tin g h a rdware fo r Assembly a nd /or Com p o n ent
M o un ti n g h ard ware always a pp ea rs i n t h e same in d entation as t h e item it mo un ts,
w h ile t h e detail pa r ts are i n dented to th e rig h t . I n d ented items are part of, and incl u ded
wit h , t h e next h ig h e r i nde n tatio n .
Mounting h a r d wa re
must be
p urc h ased
se p arately,
u nless
oth erwise s pecif ίced .
P ARTS ORDERING I NFORMATION
R e p lacement p a rts a r e available f ro m or thr o u g h your local Te k tro n ix, I n c. Fiel d Office
o r r e prese n tative .
C h anges to Te k tro n ix i n st ru me n ts a re sometimes made to accommod ate improved
components as th ey become availa b le, a nd to give you t h e be n efit of th e latest ci rc u it
imp roveme n ts develo pe d n o u r e n ginee r i n g de p a r tme n t . It is t h e refo r e im p o rta n t, w h en
o rd ering p arts, to i n cl ude t h e followi n g i n formatio n n yo ur o rd e r : P a r t nu mbe r , i nst ru ment type o r nu mbe r , ser ial or mod el nu mbe r , a n d mo d ification n u m b e r if ap p lica b le .
i
i
If α pa rt you h ave orde red h as bee n re p laced wit h α new or imp r oved pa r t, yo ur
local Te k t ronix, Inc . F ield Office o r rep resentative will co n tact you co n ce rni n g any c h a n ge
i n p a r t nu mbe r .
C h ange i n fo rmatio n , if any, is located at th e rear of t h is man u al .
ABBREVIATION S AND SYMB OLS
F or an ex p lanation of t he abb reviations a n d symbols used in t h is sectio n, p lease refer
to t h e p age imme d iately pr eced i n g th e E lect r ical Pa rts L ist i n t h is inst ructio n man u al .
Ty p e 7Α 13
I NDEX
OF MECHAN ICAL PARTS I LLU STRATION
Title
F ig u re
1
E x p lode d
L ocation (reverse side of)
. . . . . . . . . . . . . . . . . . Comparison Voltage Generator Diag ram
SECTIO N
Ty pe 7Α 13
8
MECHANICAL PARTS LIST
F IG URE
F ig .
&
No .
Te k tro n ix
Index Part No .
1-1
Serial/ M odel No .
E ff
Disc
Q
t
γ
EXPLOD E D
1
ι z s α 5
Descri p tion
-4
-5
366-1023-00
- - - - - 213-0153-00
366-1170-00
- - - - - 213-0153-00
670-1045-00
388-1142-00
131-0589-00
200-1034-00
1
1
1
1
1
5
1
-6
211-0097-00
2
-7
211-0538-00
2
KNOB, g ray- F I NE
k nob i n cl u d es :
S ETSC REW , 5-40x0 .125 i n c h , H SS
KNOB, g r ay-CO MP A R ISO N V O LTAG E
kn ob i n cl ud es :
S ETSC REW , 5-40x0 .125 i n c h , H SS
ASS EMBLY, circ u it boar d -CO MP A R ISO N V O LTAG E ( V c)
assembly i n cl u d es :
B OA R D, ci rc u it
T ERM I N A L, p i n , 0 .50 inc h lo n g
CO VER, lam p
mo un ting h a rd ware : (not incl u de d ω /cove r)
SC REW, 4-40 χ 5/16 inc h , PH S
mo u nti n g h ardware : (not incl u de d ω /assembly)
SC REW, 6-32 χ 5/16 inc h , 100° cs k, FH S
-8
366-1170-00
- - - - - 213-0153-00
- - - - - -
-9
-10
361-0143-00
210-0583-00
1
1
1
1
1
KNOB, gray-V A R B A L
k nob incl u d es :
S E TSC REW , 5-40x0 .125 inc h , H SS
RE SISTO R , variable ( n ot s h own)
mo un ti n g h a rd ware : (not incl u d e d ω /resistor)
S PAC ER , rin g
NU T, h ex ., 1/4-32 χ 5/16 inc h
-11
-12
-13
366-1059-00
366-1077-00
- - - - - 213-0020-00
- - - - - -
-14
-15
210-0046-00
210-0583-00
1
1
1
1
1
1
PU S HBU TTO N, g r ay-V c REF -ID EN T
KNOB, gray- P OSITIO N
k nob incl u d es :
S E TSC REW , 6-32 χ 1/8 inc h , H SS
RE SISTO R , varia b le
mo un ti ng h a rd ware : (not incl u d ed ω/resistor)
WAS HER, loc k , inter n al, 0 .261 1D χ 0 .400 inc h OD
NU T, h ex ., 1 /4-32 χ 5/16 inc h
-16
366-1082-00
- - - - - 213-0153-00
366-1123-00
- - - - - 213-0153-00
260-1033-00
- - - - - 210-1084-00
210-0590-00
210-0405-00
210-0001-00
1
1
1
1
1
1
1
4
4
KNOB, gray-V A R IA BLE CA L
k no b incl u des :
S ETSC REW, 5-40x0.125 in c h , H SS
KNOB, g ray- V O L TS/DI V
k nob i n cl u d es :
S E TSC REW , 5-40x0 .125 inc h , H SS
SW ITC H , u nwi r ed -V O LTS/DI V
mo un ting h ar d ware : (not i n cl u de d ω/ switc h )
W AS HER, key
NU T, h ex ., 3/8 -32 χ 7/ 16 inc h
NU T, h ex ., 2-56 χ 3/16 in c h
W AS HER, loc k , intern al, #2
-2
-3
-17
-18
-19
-20
-21
-22
1
-
Digitally signed by
http://www.aa4df.com
Mec h anical
P arts L ist-Typ e
7A13
FIGURE
F ig .
&
In d ex Te k tronix
No .
P a r t No .
1-23
-24
Serial/Model No .
E ff
Disc
EXPLOD E D
1
Q
t
γ
-25
-26
-27
384-0701-00
105-0077-00
213-0048-00
354-0330-00
105-0078-00
343-0178-00
-28
-29
- - 213-0048-00
376-0058-00
376-0039-00
-30
213-0075-00
260-0816-00
1
1
1
2
1
-31
210-0053-00
210-0405-00
2
2
-32
-33
384-0487-00
376-0073-00
1
1
-34
213-0048-00
376-0072-00
-35
213-0048-00
670-1073-00
1
1
1
1
3
5
1
1
-36
-37
131-0589-00
131-0590-00
380-0153-00
-38
213-0181-00
- - - - - 211-0156-00
-39
670-1042-00
-40
131-0589-00
380-0153-00
213-0181-00
-41
211-0156-00
-42
670-1043-00
-43
-44
131-0608-00
136-0252-01
380-0155-00
- - - - - 213-0181-00
- 45
211-0156-00
1
1
1
2
1
1
1
1
6
1
1
1
1
8
38
2
1
4
(co n t)
ι z 3 α s
Descri p tio n
E XT EN SIO N S H A F T
STO P , rota r y switc h
stop incl u d es :
S E TSC REW , 4-40 χ 1/Θ inc h , H SS
RI N G, retaini n g
STO P, r otary switc h
CO LL A R , s h aft
colla r i n cl u d es :
S E TSC REW , 4-40 χ 1/Θ in c h, H SS
CO UPL I N G, sli d e switc h
COUPL I NG
co up ling incl u d es :
S E TSC REW , 4-40 χ 3/32 inc h , H SS
S W ITC H , sli d e
mo u nti n g h a r d wa re : (not incl u ded ω /switc h)
W AS HER, loc k , s p lit, #2
NU T, hex ., 2-56 χ 3/1 6 inc h
S H A FT, exte n sion, p lastic
CO UPL I N G H A LF, s h aft
co u pli n g h alf incl u d es :
S ETSC REW, 4-40 χ '/Θ inc h , H SS
CO UPL I N G H A LF, s h aft
co u pli n g half i n cl u d es
S E TSC REW , 4-40 χ '/Θ in c h, H SS
ASS EMBL Y, ci rc u it boa r d -B A N D W IDT H
assembly i n cl u d es :
T ERM I N A L, pi n , 0 .50 inc h long
T ERM I N A L, p i n, 0 .71 inc h long
H O U SI N G, lig h t
mo u nti n g hard ware : ( n ot i n cl ude d ω / h o usi n g)
SC REW, thr ea d fo r mi n g, #2x0
.375 i n c h , PHS
mo u nti n g ha r dwa r e : (not i n cl u d ed ω /assembly)
SC REW, 1-72x 1/α inc h, 82° cs k , FH S
ASS EMBLY, ci r c u it boa rd -V C PO L A R ITY
assem b ly incl udes :
T ERM I N A L, pi n , 0.50 inc h long
H O U SI N G, lig h t
mo un ting h ardware : (not incl u d ed ω / h o u si n g)
SC REW, t h rea d fo rming, #2 χ 0 .375 inc h , PH S
mo u nting ha rdwa r e : (n ot icl ud ed ω /assem b ly)
SC REW, 1-72 χ /α in c h, 82* cs k, FH S
ASS EMBLY, ci r c u it boa rd -ATT ENU ATO R
assem b ly incl ud es :
T ERM I N A L, p in, 0.364 inc h lo n g
SOC KET, p in con n ecto r
HO U SI N G, lig h t
mou nti ng har d ware for eac h : ( n ot incl ude d ω/ h o using)
SC REW, t hrea d fo r ming, #2 χ 0.375 i n ch , PH S
mo un ting h a r d wa re : (not icl u d e d ω /assembly)
SC REW, 1-71 χ /α in c h, 82o cs k, FH S
Mec ha n ical Pa rts
FIG URE
Fig .
&
In d ex Te k tronix
No .
Part No .
E X PLOD E D
1
List-Ty pe
(co n t)
Q
t
γ
1 2 3 4 5
136-0187-00
- - 210-0940-00
210-0223-00
210-0583-00
1
1
1
1
SOC KET, 1 p i n , blac k
mo un ting hardwa re : ( n ot incl u d e d ω /soc ket)
W AS HER, flat, ι/4 ID χ ι/8 inc h OD
LU G, sol d e r , ι/4 ID χ '/ι 6 inc h OD, S E
NU T, hex ., 1/4 -32 χ 1/1 6
-49
-50
-51
358-0378-00
358-0301-02
- - - - - -
-52
-53
210-0046-00
129-0213-00
358-0377-00
1
2
1
2
1
1
BU S H I N G, sleeve, p lastic
BU S H I N G, sleeve, p lastic, 0 .250 i n c h diamete r
RESISTO R, va r iable
mo un ting hardwa re : (not incl u de d ω / r esisto r)
WAS HER, loc k, i n te rnal, 0 .261 1D χ 0 .400 i n c h OD
POST, hex ., 1 .156 i n c h es lo n g
BU S H I N G
-54
- - - - - -
-55
-56
210-0046-00
210-0471-00
358-0377-00
1
2
1
1
RE SISTO R , va r iable
mo u nti n g ha r d ware : ( not incl u d e d ω / re τ i τtor)
W AS HER, loc k , inte rn al, 0.261 ID χ 0.400 inc h OD
NU T, hex ., ι/4 -32 χ s/ι 6 χ ι 9/ι 2 i n c h long
BU S H I N G
200-0103-00
355-0131-00
131-0679-00
378-0613-00
378-0621-00
384-0488-00
376-0029-00
- - 213-0075-00
384-0700-00
376-0051-00
- - - - 354-0251-00
376-0049-00
213-0048-00
352-0084-01
378-0541-00
200-0609-00
333-1095-00
386-1447-03
366-1058-02
- - - - - 214-1095-00
1
1
2
1
1
1
1
2
1
1
2
1
4
1
1
1
1
1
1
CA P , binding p ost
ST U D, bin d i n g p ost
CO NNE CTO R , rece ptacle, BN C ω / hard wa re
LEN S, in d icato r lig h t
LEN S H O L D ER ASS EMBL Y
S H A F T, exte nsion
CO UPL I N G
co u p ling incl u d es :
S E TSC REW , 4-40x3/32 inc h , H SS
E XTEN SIO N S H A F T, p lastic
CO UPL I N G, flexible
co u p lin g incl udes :
RI N G, co u p li n g
CO UPL I N G, p lastic
S E TSC REW , 4-40 χ ι/8 inc h , H SS
H O L D ER, neo n
LEN S, neo n
CA P , lam p hol d er, p lastic
PA NEL, f r ont
S UBPA NEL, f r ont
KNOB, latc h
mo u nti n g h ardwa r e : (not incl u ded ω / kn ob)
PIN, spring, s p lit
-72
-73
-74
-75
-76
-77
-78
105-0076-00
214-1280-00
348-0235-00
214-1054-00
105-0075-00
214-1061-00
426-0499-01
1
1
2
1
1
1
1
-79
213-0192-00
2
1-46
-47
-48
-57
-58
-59
-60
-61
-62
-63
-64
-65
-66
-67
-68
-69
-70
-71
Serial/M od el No .
E ff
Disc
1
Descri p tio n
RELEAS E B A R, latc h
S PR I N G, h elical com p ressio n
S H I ELDI N G GAS KET
S PR I N G, flat, latc h d etent
B ODY, latc h , p lastic
S PR I N G, flat, sli d i n g g r o und
FR A ME SECTIO N , bottom
mo u nting h a rd wa r e ( n ot incl u de d ω /f rame section)
SC REW, t hrea d for ming, 6-32 χ ι/2 in c h, F il H S
7Α 13
Mec h a n ical P ar ts
L ist-Typ e
7Α 13
F IG URE
F ig, &
E X PL OD E D
1
(co n t)
Q
t
γ
ι z 3 α s
426-0505-01
- - - - - 213-0192-00
1
2
FR A ME S E CTIO N , to p
mo u nting h ard ware : (not incl u de d ω /frame section)
SC REW, t hrea d forming, 6-32 χ '/2 inc h , F il H S
407-0493-00
- - - - - 210-0586-00
211-0101-00
1
3
3
BR AC KE T, s u pp ort
mo u nting h ardware : ( n ot i n cl u d ed ω /brac k et)
NU T, k e ps, 4-40 χ '/, inc h
SC REW, 4-40 χ 1/4 inc h , 100 0 cs k, FH S
-84
-85
348-0171-00
337-1040-00
- - - - - 213-0055-01
1
1
4
G R O MME T, p lastic, U s h a pe d
S H I EL D, elect r ical, bottom
mo u nting h ardware : ( n ot incl u ded ω /s h iel d )
SC REW, t h read forming, 2-32 χ 3/16 inc h , PH S
-86
337-1042-00
- - - - - 213-0055-01
210-1008-00
211-0008-00
1
4
4
2
S H I EL D ASS EMBLY, electrical
mo un ting h a rdware : ( n ot incl u ded ω /s h iel d assembly)
SC REW, t h rea d fo r ming, 2-32 χ 3/16 inc h , PH S
W AS HER, flat, 0 .090 1D χ 0 .188 i n c h OD
SC REW, 4-40 χ '/4 in c h, PH S
S H I EL D, electrical, to p
mo u nting ha rd wa r e : (not i n cl u d ed ω /s h iel d )
SC REW, th read formi n g, #4
x1 4 inc h , PH S
In d ex
No .
Te k tronix
P art No .
1-80
-81
-82
-83
Serial/Model No .
E ff
Disc
ΧΒ 010128
Descri p tio n
-87
337-1041-00
- - - - - 213-0088-00
1
2
-88
670-1044-00
- - - - 388-1141-00
131-0566-00
131-0589-00
131-0590-00
131-0608-00
136-0220-00
136-0252-01
136-0337-00
214-0579-00
- - - - - - - - - - 407-0581-00
210-0046-00
210-0583-00
1
1
2
43
27
2
3
48
3
13
1
1
1
1
ASS EMBLY, ci rc u it board-O U T PU T
assembly incl u des :
B OA R D, circ u it
L I NK, te r minal
T ERM I N A L, pin, 0 .50 inc h long
T ERM I N A L, p i n , 0.71 inc h long
T ERM I N A L, pin, 0 .375 i n c h long
SOC KET, t ransisto r , 3 p in, squ are
SOC KET, p in co nn ector
SOC KET, relay, 8 p in
PIN, test p oint
RE SISTO R , va r iable
mo un ting h ard wa r e : (not i n cl u d ed ω / resistor)
BR AC KET, component
W AS HER, loc k, i n te rn al, 0 .261 1D χ 0 .400 inc h OD
NUT, h ex .,'/4 -32 χ s/ 6 in c h
-100 - - - - - - - - - - -101 407-0580-00
210-0046-00
-102 210-0583-00
1
1
1
1
RE SISTO R , va riable
mo un ting h ar d wa r e :
(not incl u ded ω / resisto r)
BR AC KET, com p one n t
WAS HER, loc k , i n ternal, 0 .261 1D χ 0 .400 inch OD
NU T, hex .,'/4 -32 χ s/ 6 in c h
-89
-90
-91
-92
-93
-94
-95
-96
-97
-98
-99
Mec h anical Parts
F IG URE
F ig .
&
I n d ex Te k tronix
No .
Part No .
1-103
EX PL OD E D
1
Q
t
γ
Serial/ M o d el No .
E ff
Disc
260-0760-00
- - 407-0498-00
211-0034-00
210-0938-00
210-0001-00
210-0405-00
220-0547-01
1
1
2
2
2
2
6
-108 211-0116-00
1
6
-104
-105
-106
-107
-109 211-0101-00
-110 388-1195-00
-111 670-1046-00
-112
-113
-114
-115
-116
-117
-118
-119
-120
-121
-122
-123
-124
-125
-126
-127
388-1143-00
131-0183-00
358-0136-00
131-0566-00
131-0589-00
136-0183-00
136-0220-00
136-0252-01
136-0263-01
136-0323-00
136-0336-00
136-0352-00
214-0579-00
214-0781-00
214-1121-00
352-0044-00
- - - - - 211-0007-00
385-0149-00
211-0097-00
1
1
1
2
2
4
15
3
10
72
27
2
2
4
1
2
1
1
2
1
1
ι z s 4 s
(cont)
Descri p tio n
S W ITC H , sensitive sna p action
mo u nting h a rd ware : (not i n cl u d e d ω /switc h )
BR AC KE T, switc h
SC REW, 2-56 χ 1/2 in c h, RH S
W ASHER, flat, #2
WAS HER, loc k , inte r nal, #2
NU T, h ex ., 2-56 χ 3/16 inc h
NU T, bloc k
mo u nti n g hardwa r e fo r eac h : (not incl u d e d ω /n ut)
SC REW, sems, 4-40 χ s/16 in c h, ΡΗΒ
mo unting h a rd ware : (not incl u d ed ω /assembly)
SC REW, 4-40'χ 1/4 inc h , 100° cs k, FH S
CI R C U IT BOA R D, RF s h iel d
ASS EMBLY, ci r c u it boa rd -I NPUT
assembly i n cl ud es :
B OA R D, circ u it
CO NNE CTO R , terminal fee d -t h r u
BU S H I N G, p lastic
LI NK , termi n al
T ERM I N A L, p in, 0 .50 inc h long
SOC KET, t r a n sisto r , 3 p in
SOC KET, transisto r , 3 p in, s q u are
SOC KE T, p in co nn ector
SOC KE T, pin terminal
SOC KE T, tra n sisto r , 4 p i n , p lastic
SOC KE T, relay, 5 p in
SOC KE T, co n necto r p i n
PIN, test p oint
I N S ULATO R , p lastic
HEAT SI NK , transistor
H O L D ER, plastic
mo un ti n g h a rd ware : ( n ot incl u d ed ω / h ol d er)
SC REW, 4-40 χ 3/16 inc h , PH S
POST, p lastic
SC REW, 4-40 χ 3/ 16 inc h , PH S
-128 200-0945-00
-129 200-0945-01
- - - - - 211-0062-00
1
1
1
CO VER, h alf transistor
CO VER, h alf transisto r , t hrea d ed
mo un ti n g ha r d ware : (not incl u ded ω /cove r )
SC REW, 2-56 χ 5/16 inc h , RH S
-130 211-0155-00
- - - - - -131 214-1140-00
6
6
SC REW, 4-40 χ 0 .081 i n c h , PH S
mo u nting h ar d wa re : (not incl u d e d ω /assembly)
S PR I N G, h elical com p ressio n
-132
1
4
PA NEL, rea r
mo u nting har d ware : ( n ot i n cl u d e d ω / p anel)
SC REW, t h rea d forming, 6-32 χ 1/Ζ inc h , F il H S
386-1402-00
- - - - - -133 213-0192-00
List-Ty pe
7Α 13
Mec h a nical
Pa rts L ist-Ty pe
7Α 13
F IG URE
F ig .
&
I n dex
No .
1-134
-135
-136
-137
-138
-139
-140
Te k tro n ix
Part No .
179-1430-00
- - - - - 131-0621-00
131-0707-00
352-0163-00
352-0169-00
352-0171-00
179-1431-00
-141
-142
-143
-144
-145
131-0621-00
131-0707-00
352-0162-00
337-1160-00
337-1163-00
- - - - - -146 337-1167-00
070-0978-00
Se rial/ Mod el No .
E ff
Disc
E X PLOD E D
1
Q
t
γ
1
40
13
2
1
9
1
20
5
1
1
1
1
ι
z
(co n t)
s α 5
Description
W I R I NG HA RNE SS,
main
wi r i n g ha rn ess i n cl u des :
CO NNECTO R , terminal, st raigh t
CO NNECTO R , te rmi n al, straig h t
H O L D ER, te r minal connector, 5 wire
H O L D ER, te r minal connecto r , 2 wire
H O L D ER, termi n al con n ector, 1 wi r e
W I R I NG H ARNE SS, reado u t
wi r ing ha rness incl ud es :
CO NNE CTO R, te rmi n al, st r aig h t
CO NNE CTO R, te r mi n al, straig h t
H O L D ER, termi n al con nector, 4 wire
S H I EL D, electrical, left
S H I ELD, elect r ical, rig h t
s h iel d i n cl u d es :
S H I EL D, elect r ical, plastic
STA N DA R D ACC E SSO R I E S
2
MA NU A L, i n struction
( n ot s h own)
MA NUAL C H A NG E I NF O RMATIO N
At Te k tronix, we contin u ally strive to kee p up wit h latest
electronic develo p ments by adding circ u it an d com p onent
im p rovements to o ur instruments as soo n as th ey are d evelo p e d and tested .
Sometimes, d u e to p ri n ti n g an d s h i pp i n g req u irements, we
ca n 't get t h ese c h a n ges imme d iately into p ri nted man u als .
H ence, yo u r man u al may contain new c h a n ge informatio n on
following p ages .
Α single c h ange may affect seve ral sections . Sectio n s of
t h e man u al are often p ri n ted at d iffere n t times, so some of
t h e information on t he c h ange p ages may al r ea d y be in
your man u al . Since t h e c h ange information s h eets are car rie d
in t h e ma nu al until A LL ch anges a r e permane n tly entere d ,
some d u p lication may occ u r . If no s u c h c h ange p ages a pp ear
in t h is section, yo u r man u al is correct as p r inted .
ΤΥΡΕ 7A13
ELE CTRI CAL PARTS LI S T AND SCHEMATIC CORRE C TIONS
CHANGE TO :
Q40
151-0254-00
Sili con
NP S
R41
321-0223-00
R 42
2 .05 kΩ
1/8 W
321-0223-00
Prec
R 49
2 .05 kΩ
1/8
321-0299-00
W
1%
Prec
1%
12 .7 kΩ
1/8 W
Pr ec
1%
TO-98D16Ρ4
Μ16,018/1269
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