Jerrol Distribution System Manual for instalation of LSA

Jerrol Distribution System Manual for instalation of LSA
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INSTRUCTION MANUAL
155-392
LSA-L10A AND ILSA-L:10AB
DISTRIBUTION SYSTEM MANUAL
JFRROLD ELECTRONICS CORPORATION
COMMUNITY SYSTEMS DIVISION
15th AND LEHIGH AVENUE
PHILADELPHIA 32, PENNSYLVANIA
A subsidiary of The Jerrold Corporation
SECTION I =
SECTION IT -
SECTION IIT -
TABLE OF CONTENTS
PAGE
INTRODUCTION
1-1
Scope 8 6% 200908 RT OL OPO OE EHO HO HO PERLE EH OSS 1
1-2 General Description °c... CANADA 1
1-3 Model LSA-L10A +0... 1-2
Tesla Model LSA=L10AB “1.0... 04%#0..#..#. e
1-5 Cable Equalizers - Models ILSE-1 and LSE-2 sees 2-3
1-6 Thermatic Equalizers - Models LSET-1 and £ ... 3
1-7 Equivalent Cable Lengths - Models 150-2,4,6,8. 3
1-8 Hybrid oplitter - Model IS~92 .«.arecavorerece 3-4
1-9 Directional Couplers - Models LS-8, 12, 16 ... L
SPECIFICATIONS
2-1 System Specifications ..e.esrsorsecocsocaoacon D
2-2 Jerrold Amplifier Specifications ..e.scsosccsaro 5-6
INSTALLATION
Il. General serien Y
3-2 Chart of Controls and Connectors for
Jerrold Amplifiers .ceeeseceorsessessenssosecs 7-10
2-3 Preliminary Installation of Electronic
Equipment PR 880 OH OSE RO PPE ERS eee shen? RO eS 10-11.
3-1. Final Installation and System Check .....……..…... 11-13
Schematics
1-3
SECTION I
INTRODUCTION
SCOPE
This manual describes two similar closed-circuit TV distribution
systems for low-sub vhf channels in the 5 to 90 mc band. These
systems are lmow, respectively, as LSA-L10A and LSA-L10AB de-
pending on which of these Jerrold amplifiers is used in the
system. In addition, the manual contains a complete description
of system components together with all information necessary to
install and maintain these systems.
GENERAL DESCRIPTION
The LSA-L10A distribution system is designed for extremely
efficient transportation of low-sub vhf channels in the 5 to
90 me band via coaxial cable over extremely long distances.
The system comprises Jerrold Model ISA-L10A distributed line
amplifiers, and the required numbers of Jerrold cable equalizers
(either fixed or thematically controlled), Jerrold splitters,
and weather cabinets, and the necessary coaxial cable (aerial or
buried),
The LSA-L10AB distribution system employs an additional amplifier
Jerrold Model LSA-LIOB connected in push-pull with the amplifier
section of Model ISA-L10A for the express purpose of bettering
the second order distortion components by a minimum factor of 25
db to increase the number of cascaded amplifiers,
An additional benefit obtained is the reduction of third order
components by 6 db. The lay-outs of the two systems are exactly
alike. The only difference in components is the additional
LSA-L10B amplifier at each location in the LSA-L10AB system.
The operating input and output levels for the two systems are
the same. |
“NOTE: When a distribution system includes intercity microwave
links of less than broadcast quality, one half the noise
objective must be allocated to the radio link, thus re-
ducing the recommended number of amplifiers in cascade
in the cable portion of the system,
MODEL LSA-L10A
Model LSA-LIOA comprises a 12-tube, c-stage, distributed amplifier
section, a 3-tube automatic gain control circuit, and a built-in
regulated power supply, The unit covers a frequency range from
5 me to 90 me. The minimum full gain of the amplifier is 35 db
with 30 db recommended as operating gain.
= 4m
1-1
1-5
Each amplifier stage employs six 565/103B pentodes. The
AGC circuit uses a 565L/L,03B as an rf amplifier, a 5726/6ALSW
as a detector and clamp, and another 5651/103B as a de
amplifier. In addition, the gain of the unit can be manually
controlled. In both cases, control is exercised over the gain
of the input stage, with a maximum change in frequency response
of $ db for a 26 db variation about the setting of the operating
gain,
The AGC is lightly coupled from the amplifier output and tuned to
the carrier selected for control purposes. This carrier can be a
video, sound or special control carrier, depending on system re-
quirements,
The clamping action in the AGC circuitry prevents the amplifier
from exceeding its full rated gain in case of system failure thus
assuring that tubes will be held within prescribed ratings. |
Input and output impedances are nominally 75 ohms from 6 to 90 me
with a VSWR of 1.2:1 (21 db return loss). The noise figure is
essentially constant at all frequencies; 7 db at full gain of 35
db, and 8,5 db at the operating gain of 30 db.
To achieve a system flatness of 41 db over the entire frequency
range, equalization of coaxial cable having 30 db attenuation at
90 me is required.
A built-in metered test circuit permits checking all tubes and
supply voltages during operation, This feature is a proven aid
in the preventive maintenance of distributed amplifiers,
All variable components are factory-aligned and are not accessible
Irom the chassis top except two (L101 and L102) for tuning the
AGO; tube replacements will not require field alignment.
MODEL LSA=-1.10AB
Jerrold Model LSA-L10AB comprises Model ISA-L10A and Model LSA-
L10B. Model LSA-L10B provides the necessary push-pull circuitry
and an additional 12-tube, 2-stage distributed amplifier which
derives its power and AGC control from Model LSA-L10A via inter
connecting cables, The combined amplifier provides an output
remarkably low in distortion due to second order beats,
CABLE EQUALIZERS ~ MODELS LSE-1 AND LSE=2
Jerrold Models LSE-1 and LSE-2 are cable equalizers used in
systems employing LSA-);10AB amplifiers in the main trunk line.
These units will provide compensation for varying cable attenua-
tion (tilt) due to variations in irequency. They are used at
amplifier locations where temperature fluctuations have a
negligible effect on tilt,
че Y =
Model LSE-1 will compensate for the variation in cable attenuation
due to variation in frequency between 5 and 90 mc for 28.5 db of
cable measured at 90 me. Model LSE-2 will perform the same function
for 2.5 db of cable. Two trimmer capacitors on each of these
models provide respectively for very slight adjustment of the over-
all tilt and high-frequency response. These adjustments are made
only when the swept response of an amplifier at a particular loca=
tion is being observed on an oscilloscope.
These units have an input and output impedance of 75 ohms with a
maximum VSWR of 1.2:1 and are equipped with "N" fittings. They
cover the band from 5 to 90 me and have an insertion loss of less
than 2 db at 90 me. Overall dimensions are 2 3/8" x 2 3/4" x lı 1/8,
1-6 Thermatic Equalizers - Models LSET-1 and LSET-?
Jerrold Models ISET-1 and LSET-2 are thermatic equalizers used
in systems employing LSA-L10AB amplifiers in the main trunk
line. These units will provide compensation for varying table
attenuation (tilt) due to fluctuations in temperature as well
as to variations in frequency.
Model LSET=1 will compensate for the variation in cable attentua-
tion due to variation in frequency between 5 and 90 mc for 28.5
db of cable measured at 90 mc at 80 F, In addition, it will
compensate for the variation in cable attenuation due to variation
in temperature between OF and 120 F for the same length of cable.
Model LSET-2 will perform the same functions for 21.5 db of cable.
Bach has trimmer capacitors which are used exactly as are those
on the LSE=1 and 2 models.
These units have an input and output impedance of 75 ohms with
a maximum VSWR of 1,22:1 and are equipped with "NN" fittings,
They cover the band from 5 to 90 mc and have an insertion loss
of less than 2 db at 90 mc at 80 Е, These thermatic equalizers
are always mounted on the pole at the amplifier location outside
the weather housing. Overall dimensions are approximately
2 3/8" x 2 3/4 x L 1/8",
1-7 EQUIVALENT CABLE LENGTHS ~ MODELS LSC-2, LSC-l, LSC=6, AND ISC-6
Jerrold Models LSC-2, LSC-L, LSC-6, and ISC-8 are equivalent cable
lengths used in systems employing LSA-L10AB amplifiers in the
main trunk line. They are equivalent, respectively to 2, Ц, 6, or
8 db of cable measured at 90 me, They cover the 5 to 90 mc band,
have an input and output impedance of 75 ohms with a maximum VSWR
of l.l:1 and are equipped with "Nu fittings.
1-8 HYBRID SPLITTER - MODEL 15-92
Jerrold Model LS-92 is a hybrid splitter used to split one 75-ohm
line into two 75-ohm lines with only 3 db loss in each leg. The
— | unit covers the 5-90 mc band, has input and output impedance of
75 ohms with a maximum VSWR of l.2:1, and insertion loss of 3 db,
a
1-9
and is equipped with "М fittings. The isolation between
outputs is 30 db,
DIRECTIONAL COUPLERS - MODELS LS-0, LS-12, AND 15-16
Jerrold Models LS-8, LS-19, and LS-16 are directional couplers
used to tap off a 75-ohm line. These units cover the 5-90 me
band, have input and output impedance of 75 ohms with a VSWR
of 1.2:1, and are equipped with 'N" fittings. The isolation
between output and tap is 30 db minimum,
Model L5=0 has 8 db loss in one leg and less than 1 db in the
other. Models LS-12 and LS-16 have, respectively, 12 and 16 db
loss in one leg and less than 0.5 db loss in the other.
„Мо
SECTION IT
SPECIFICATIONS
2-1 SYSTEM SPECIFICATIONS
LSA-L10A System
Input Level +0 dbmv
Output Level +37 dbmv
LSA-LI0AB System
Input Level +11 dbmv
Output Level +10 dbmv
NOTE 1. In either system, either thermatic equalizers Jerrold
Models LSET-1 or LSET-2 or regular equalizers Jerrold
Models LSE-1 or LSE-2 shall be used at every amplifier
location,
NOTE 2, A carrier generator Jerrold Model CGS-T73,5 will be
used in the head end of the system as an AGC control
carrier,
2-2 JERROLD AMPLIFIER SPECIFICATIONS
SPECIFICATIONS
ISA-L,10A LSA-LIOAB
MINIMUM FULL GAIN 35 db 3 db
OPERATING GAIN 29 db 29 db
BANDWIDTH 5 to 90 me 5 to 90 me
FLATNESS WHEN EQUALIZED
THRU 30 DB OF CABIE
MEASURED AT 90 MC db “db
MINIMUM INPUT O dbmv O dbmv
OPERATING INPUT 10 dbmv 10 dbmv
IMPEDANCE (OUTPUT AND INPUT) 75 ohms 75 ohms
VSWR 1.2:1 dou DE
OUTPUT (MAXIMUM 5 CHANNELS) L8 db for Pl db for
=57 db cross mod. 57 db cross mod,
- 5 =
LSA-10A LSA-L10AB
OUTPUT (OPERATING) LO dbmv LO dbmv
NOISE FIGURE (FULL GAIN) 7 db 7 db
NOISE FIGURE (OPERATING GAIN) 8.5 db 8.5 db
AGC ACTION +10 db in = +1 db out +10 db in = +1 db out
- 5 db in = -1 db out - 5 db in = -1 db out
SECOND ORDER BEAT (FOR LO DBMV) 15 db -70 db
oECOND HARMONIC (FOR LO DEN) -51 db -76 db
TUBE COMPLEMENT 1 103B/5651 26 1,03B/5651
1 6ALSW/5726 1 6ALSW/5726
POWER SOURCE 117-v 60-eycle ac 117-v 60-cycle ac
POWER CONSUMPTION 100 watts 120 watts
FUSE PROTECTION (B+) + amp. (2) $ amp.
(FIL) 10 amp, (1)10 amp.
INPUT AND OUTPUT FITTINGS N TYPE N TYPE
TEST POINT FITTINGS 2 BNC TYPE 2BNC ON LSALIOA
DIMENSIONS 2-1/8" x 191 x 8-3/1 2-1/8" x 191 x 1)"
WEIGHT 18 1bs, 25 1bs,
3-1
3=2
NAME
SECTION III
INSTALLATION
GENERAL
This section is concerned with the installation of electronic
equipment at the various amplifier locations on either an LSA-11 0A
or LSA-U10AB distribution system. It is assumed that the prelim-
inary construction work has been accomplished i.e. the Jerrold
weather housings Model WC-L10 have been installed, a 117-v ас
power connection has been provided within each housing, all system
coaxial cable has been run, and the cable ends at the various
amplifier locations have been prepared with proper connectors for
connection to equipment, It is further assumed that one construction
crew will be concerned with the preliminary installation of elec-
tronic equipment while a technical erew equipped with the necessary
test instruments will follow to set system levels at each amplifier
location, to check the response of the amplifier or amplifiers, to
make final connections, and to do whatever else is required to
leave each location in perfect operating condition.
CHART OF CONTROLS AND CONNECTIONS FOR JERROLD AMPLIFIERS
This chart is included here to familiarize installation personnel
with the functions of the various controls and connections on the
LSA-l10A and LSA-LI10AB,
CONTROLS AND FITTINGS
FRONT PANEL LSA-L10A
TYPE POSITION FUNCTION
INPUT N Connection for input cable from
fitting LSA-LIOB or for trunk line in if used
independently.
AUX POWER Jones es Connection for power cable from
B+
plug LSA-L10B.
$ = amp. das Protects B+ supply for LSA-)10A.
fuse
FIL 10A 10= amp = Protects filament supply for
fuse LSA-L10A or ILSA-L10AB,
METER 3-scale Measures current or voltage
meter depending on amplifier switch positions,
Top Calibrated from O-l volts to measure
Scale bias on tubes VI thru V13 in LSA-110A
and V1 thru V12 in ISA-)10B,
m [ =
NAME
TYPE
CATH CURRENT OR BIAS
A
B+ VOLTS
NOTE :
B
17-pos
function
switch
Called FUNCTION
Switoh in copy
for proper
identification.
REDUCE FIL 10% 2-pos
Ga TH
CURRENT
Switch
POSITION
Middle
scale
Bottom
scale
V1 thru
V1i3
SP
А В
Normal
Moved down
2-pos
switch
IK
FUNCTION
Calibrated from 0-70 ma to measure
cathode current on tubes VI thru V15
in LSA-L10A and V1 thru V12 in ISA-)103.
Calibrated from 0-200 volts to measure
supply voltages for amplifier stages
in LSA-LIOA and LSA-LI0B .
Selects meter function according to
position.
Enable meter to read cathode current
or bias on tubes V1 thru Vi3 in
LSA-L104 and Vl thru V12 in LSA-L10B
depending upon the positions of the
AUX-MAIN and CATH CURRENT switches.
Enables meter to read plate voltage
for the first stage of either amplifier
LSA-J10A or LSA-JI0B according to
position of AUX-MAIN switch.
Enables meter to read the screen vol tage
for the first stage of either amplifier
ISA-L,10A or ISA-)10B according to
position of AUX-MAIN switch,
NOTE: The screen voltage of the first
stage of the amplifier is equal
to the plate voltage of the
second stage,
Enables meter to read screen voltage of
the second stage of either amplifier
according to position of AUX-MAIN switch.
Enables meter to read B- voltage supply
for ISA-L10A unit with CATH CURRENT
switch in BIAS B-position.
Permits Normal filament supply to all
tubes,
Reduced filament supply by 10% as a
final check on tube condition by ob-
serving change in bias reading,
Enables meter to read cathode current
on tubes V1 thru V13 in ISA-L104 on
V1 thru V12 in LSA-L10B depending on
position of AUX MAIN switch and re-
Spective FUNCTION switch,
“E a
NAME
AUX
MAIN
AN
AGC
MAN
Le
TPO
TYPE
2-pos
switch
2=pos
switch
pot
pot
BNC fitting
BNC fitting
LINE INPUT N
fitting
LINE OUTPUT N
FUNCTION
SWITCH
BATANCE
fitting
15=pos
POSITION
BLAS B-
AUX
MAIN
MAN
AGC
FUNCTION
Enables meter to read bias on tubes.
Permits voltage or current readings
to be taken on LSA-410B.
Permits voltage or current readings
to be taken on LSA«l104,
Energizes manual gain control circuit.
Energizes automatic gain control
circuit.
Regulates level of manual gain
control,
Regulates level of automatic gain
control,
Test point for input to LSA-l104B
(20 db down)
Test point for output of LSA-II10AB
(LO db down)
FRONT PANEL ISA-L10B
function switen
pot
adjusted
at factory
V1 thru
Viz
Input to LSA-J10AB from main trunk,
Output of ILSA-L10AB to main trunk.
Selects meter function according
to position with AUX MAIN switch
in AUX position.
Enables meter to read cathode
current or bias on tubes V1 thru
V12 in ILSA-L10B depending upon
the positions of the AUX MAIN and
CATH CURRENT switches,
Same function as these positions on
LSA-III0A FUNCTION switch but for
LSA-L10B.
To minimize 2nd order distortion.
NAME TYPE POSITION
F E
fittings
1 amp fuse m
FUNCTION
For use in observing the response
of LSA-LIOB amplifier with push-pull
circuit disconnected,
Protects B+ for LSA-Ll10B,
3-3 PRELIMINARY INSTALLATION OF ELECTRONIC EQUIPMENT
The electronic equipment at each amplifier location will vary
according to the particular system. This equipment will have
been selected by those concerned with making the original lay-out
and will have been properly marked for installation in the
particular location.
Step-by-step Procedure
1. Mount ISA-L104 or LSA-L10!B in weather housing,
2. Connect other electronic equipment to either LSA-L104
or ISA=L10AB .
NOTE:
de
Co
de
3. Set
de
All equipment except thermatic equali,ers LSET-1
or LSET-2 is located within the enclosure, No
cable connections will be made at this time,
If LSE-1 or LSE-2 is used, connect OUTPUT of
equalizer to INPUT
fitting of either LSA-HIOA
(ISA-L104 system) or LSA-L10B (LSA-LIOAB system).
If ISET-1 or LSET-2 is used, break cable outside
WC-L10 enclosure and mount unit in the 1iH6,
ST ÉD TT
8 is used with LSE-1 or LSE-2,
connect OUTPUT of build-out unit to INPUT of LSE-1
or LSE-2,
If LSC-2, L, 6, or 8 is used with LSET=1 or LSET=2
(located outside enclosure), connect OUTP'TT of
build-out unit to INPUT of IS:-h10A oc LSA-hI0AB.
controls on Jerrold Amplifier
LSA. TOA
CATH CURRENT
AUX MATN
FUNCTION
MAN ACC
- 10 =
IK
MAIN
VI
MAN
b. ISA-10B
FUNCTION VI
le. Plug amplifier into 117-v ac source.
NOTE: If LS.-J10B is used, plug unit into LSA-L10A and
interconnect the amplifiers with the jumper cables
р rovide Ca
>. Observe that green light on LSA-L10A lights and wait
approximately one minute.
6. Adjust manual GAIN control (to the left of MAN ACC switch)
until the meter reads 3 MA.
To Proceed to next amplifier until preliminary installation work
is complete.
FINAL INSTALLATION AND SYSTEM CHECK
It is assumed that the levels of the channels at the head end have
been adjusted to provide the proper tilt between the lowest video
carrier and the highest, and that sound carriers are approximately
15 db below video carriers. During the initial check of the system
oniy the lowest and highest video carrier and the ACC control
carrier should be fed to the system, This will permit accurate
setting of AGC levels throughout the system and when the other
channels are added they will be maintained at the proper levels.
Step-by-step Procedure
1. Connect Jerrold Field Strength Meter Model. FSM-70LB to
OUTPUT fitting on either LSA-110A or LSA-L10B (depending
on amplifier used) and tune to the control carrier for
AGC. |
2. Read output on 70L-B and adjust manual GAIN control on
LSA-L10.. to give the desired output (usually LO dbmv) as
read on 70L-B.
3. Place MAN AGC switch in AGC position and adjust AGC control
(to right of MAN AGC switch) to obtain desired output as
read on 70l.-B.
be Adjust L-102 for minimum reading on LSA-L10A meter or
FSM-70LB.
5. Adjust 1-101 for minimum reading on ISA-L10A meter or
FSM-701B.
wa
Ti
9:
10
11,
12.
13.
Re-adjust AGC control to obtain desired output as
read on 70l=B,
Note cathode current as read on meter of LSA-L10A when
the desired output is read on 70l-B. The reading should
be between 2 and L millivolts at normal (60°F) temperature.
The reading will be slightly higher at higher temperatures
and lower with lower temperatures.
Place FUNCTION switch on LSA-L10A, in turn, to positions
Vi thru V6 and observe LSA-L10A meter reading at each
positions Each reading should be approximately the same
as for VÍ. Record average reading on a card for reference
when performing periodic maintenance or trouble-shooting.
Place FUNCTION switch on ISA-L10A, in turn, to pesition V7
thru V13 and observe ISA=4101 meter reading at each position.
Each reading should be approximately the same (between 9 and
11 milliamps). Record average reading on card.
NOTE: If LSA-LIOB is used, turn AUX MAIN switch on
LSA=110A to AUX position and FUNCTION switch on
ISA-L10B, in turn, to positions V1 thru V12. The
readings on the LS.i-l10A meter should be approxi-
mately the same as those obtained in steps 8 and
9,
Place CATH CURRENT switch on ISA-L10A in BIAS B- position,
МАМ AGC switch in MAN position, and AUX MAIN switch in
MAIN position,
Place FUNCTION switch on LSi-L104, in turn, to positions
V1 thru V6 and read top scale on LSA-L10A meter to
measure bias. The meter should read between 2.5 v and |
volts for all positions. Record average reading on card.
Place FUNCTION switch on LSA-L10A, in turn, to positions
V7 thru V13 and read meter as in step 13. Meter should
read between 1 and ? volts for all positions. Record
average reading on card,
NOTE: If LSA-110B is used, turn AUX MAIN switch on
LSi=104 to AUX position and FUNCTION switch
on ISa-.10B, in turn, to positions V1 thru V12,
The readings on the LSA-L10A meter should be
approximately the same as those obtained in
steps 11 and 12.
Place C.THODE CURRENT switch in BIAS B- position, FUNCTION
switch in B- position, MN ¿00 switch in MAN position and
LUX MAIN switch in MAIN position. Meter on LSA=1:10A should
read between 160 and 180 volts. Record reading on card.
“ 1) a
Ll
15, °
16,
17.
18.
19,
20.
Turn MAN AGC switch to AGC position, place CATHODE CURRENT
in IK position, place FUNCTION switch, in turn, to P,, SaPpa
and Sp positions and observe LSA~N10A meter readings at each
position, The meter should read 180 to 200 volts in Py
position, 130 to 150 volts in S Pz position, and 120 to 1LO
volts in Sp position. Record readings on card.
NOTE: Approximately the same readings will be obtained
for the LSA-L10B by placing AUX MAIN switch in
AUX position and making the same check.
Place CATHODE CURRENT switch in IK position, AUX MAIN switch
in MAIN position, MAN AGC switch in AGC position and dis-
connect 7OL-B from OUTPUT fitting of either LSA-L10A or
ISA-L10AB.
Connect outgoing trunk to OUTPUT fitting of either LSA-L10A
or LSA-N10AB and proceed to next amplifier location.
When steps 1 thru 16 have been finished at all amplifier
locations, the system levels will have been established.
The response of each amplifier must now be checked and
the trimmers on the equalizer used at each location ad-
Justed.
Connect a Jerrold Sweep Generator Model 601 (or equivalent)
and a Jerrold Marker Generator Model CM-6 (or equivalent)
into the output of the system head-end. Set sweep generator
to sweep between O and 95 mec.
At each amplifier location disconnect output cable from
LS-L10A or ISA-L10AB and connect the output of the
LSA-L10A or LS1-)10AB via a Jerrold D-86 detector (or equiva-
lent) to an oscilloscope. Observe the detected response of
the amplifier, The response should be flat within “db
from 6 to 90 mc.
Adjust trimmers on the equalizer used at the Lnsation
(ISE-1, LSE-2, ISET-1, or LSET-2) for best resvunca,
NOTE: The tilt adjustment provides a small change
in the tilt of the whole response while the
frequency adjustment provides for peaking at
90 me.
Disconnect detector and scope and resconnect output cable
to LSA-LI0A or LSA-LIOAB.
When steps 17 thru 20 have been completed, the response
of the system has been checked out. It may be necessary
to repeat steps 1 thru 16 as a final touch-up of signal
levels,
This completes the system installation.
a as
Pa
LINE INPUT
A
a
éés LOW SUB AMPL
7,5pf
== C67
OI
T4
Is COIL ASSY
= 1800 pt SEE DWG.
NL ==
/ ( )
TO INPUT
93 Lsa-410a
Woo
а»,
TEST POINT
(F&I)
COIL ASSY.
SEE DWG.
C822-059
alió
-—.> M-16
+125v
+180 V
| с47
Ta
RI
330
VW
OIL ASSY.
E M-15 SEE DWG
+ cea C822-058-1
< R22 a.
LIK
IOW == BALANCE
R23
NOK
Las tl c73
Mid E 25/15V |
R27
1500 E
ow
sw V-l2 v-il V-10 V-5 V-4 V-3 V-2 V-
3 4 3 4 3 4 3 4 3 4 3 4 3 4 3
H_ c64-a Lh ul. =
T 10/300v &er| = = = E 7 = = =
1/4 AMP
——— > и =
TO
а ©
“7%
EMATIC
IFIER, PUSH-PULL UNIT
LSA-410B
Р2
TO OUTPUT
LSA- 4108
La!
Pı-2
va
24pt 1800pf
T6
IL
CE SES
с
ces 69
отв,
J4
1 TEST POINT
LE (FBI)
TT
cro
101
|. ALL RESISTOR VALUES GIVEN IN OHMS.
2. ALL RESISTORS 1/2 WATT UNLESS OTHERWISE SPECIFIED.
3. ALL MARKED CAPACITOR VALUES GIVEN IN MF UNLESS OTHERWISE SPECIFIED.
4. ALL UNMARKED CAPACITORS ARE 1000 PF.
L32
c4? +130 V
7-3P
R46 R47
412 470 c65 L45
roy EN
ss de Ш
.7-3pf C 45 —
‚ ©!
39 LL
LYNN Y ima
M-16 M-15 M-14
R48 < R49 < R50
910k < 910k < 910K
$ |
7 M-12 METER SWITCH
|
7 ÓN
M-3 / | N M-7
weal | 2
\
(REAR WAFER) \
\
STE NUN A we du TR
NOTES
SCHEMATIC
SUB AMPLIFIES
LSA- 410A
COIL ASSY
SEE DWG.
822-059 ——
R2
580 Sige TICE
(5654/4038
VI TO VI3 INC.
AND VIS)
EOL ASS La mei _LIG
SEE DWG, E a E a E E DO Des meee SE
a - -
Po — — — — A === = mm mm em em
F
COIL ASSY. s e
SEE DWG. T201 : хо
C822-056-1 >
R202
1500 soa
si LOW
lh R203 ны
LIK
IOW
+ >M-15
+[c203-a
= Teese
330 (o)—¢
EX : M-16
| x c203-8 7
"107 R106 As
A CR3 300Ÿ 3,9K ‘
я Ex E» R104
205 CH = 100 Fk
2200 25715V © Rios
H7V—60 w Fo Y 165 V ar .
c204 c209 = = ск
T 40/250V TF 40/250V O
TO $3 = | = ]
д. a LL. > M-17
F202 =
PE e eu NC V-15 14 V-13
| ! | 6. 3 VAC Sp o V
[ pe A R 207 REDUCE FIL. 10%
18
a — ANN 4
c205 ï Ca lus = R206
EVR QE | 6.3 VAC 0S | 0.16
| | (GREEN)
= OE RE 0
| SEO
—— —
To s5 = =
3 vi EN. q LIZ
4 FE Y YA & ge on
Ps na des men oa pun meza dd
Rs RIS
Л 5.1
+130 у Lac
| TO J2-2
Lal
== Ci o у
„ol i
>
1 e 53
pe 1% ==
LI9
MI
VA LI8 L20
= T с? R25
68K
|W
с44
ing
IX
R50
10 Lal
AA
ca3
„ol
CATH
CURRENT
IK
R47 cas
L39 470 E ‚ О! R306
= 1%
a +190 y
V-14 A
RIO
cios
LIO3 E cli
RI M-16 M-I5 M-14 M-17
22K
3 J
R301 < R302 Z RIOS =:
£104 0K 910K 910 K зе R307 >RIOS5
METER SWITCH 910K B2K
D
2
Lo E
cle 1000
+ 60/250V al
V-14B
| 1/2-5726/6AL5
RII2 = ; L105
100 K | |
AN +
CRA M-4
ov M-5 M-6 Py
{REAR ` МАРЕК} ANA A rb ВД Be N
V-12 V-1I V-10 V-9 V-8 V-7 V-6 v-5 v-4 v-3 V-2 V-I FERNE RUE)
3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4-5 4
|
|
NOTES ‘
|. ALL RESISTOR VALUES GIVEN IN OHMS.
2. ALL RESISTORS |/2 WATT UNLESS OTHERWISE SPECIFIED.
3. ALL MARKED CAPACITOR VALUES GIVEN IN MF UNLESS OTHERWISE SPECIFIED.
4. ALL UNMARKED CAPACITORS ARE 1000 PF.
5. % C201 PART OF T20l ASSEMBLY.
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