HP 4260A User's manual

HP 4260A User's manual
 HP 42604 |
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4260A
UNIVERSAL
BRIDGE
OPERATING AND SERVICE MANUAL
V09Zr dH
il
HEWLETT hp; PACKARD
CERTIFICATION
The Hewlett-Packard Company certifies that this instrument was
thoroughly tested and inspected and found to meet its published
specifications when it was shipped from the factory. The Hewlett-
Packard Company further certifies that its calibration measurements
are traceable to the U.S. National Bureau of Standards to the extent
allowed by the Bureau's calibration facility.
WARRANTY AND ASSISTANCE
All Hewlett-Packard products are warranted against defects in
materials and workmanship. This warranty applies for one year from
the date of delivery, or, in the case of certain major components listed
in the operating manual, for the specified period. We will repair or
replace products which prove to be defective during the warranty
period. No other warranty is expressed or implied. We are not liable
for consequential damages.
For any assistance contact your nearest Hewlett-Packard Sales and
Service Office. Addresses are provided at the back of this manual.
=
OPERATING AND SERVICE MANUAL
MODEL 4260A
UNIVERSAL BRIDGE
SERIALS PREFIXED: 601-, 602-
This manual applies directly to standard Model
4260A Universal Bridges with serial prefix num-
ber 601- or 602-, See Table T-1 in Section VII
(Manual Changes and Options) for changes re-
quired to adapt this manual to older tnstruments,
1965
Copyright HEWLETT-PACKARD COMPANY
1501 PAGE MILL ROAD, FALQ ALTO, CALIFORNIA, U.5. A,
M4 MUFACTURED BY YOROGAWA, HEWLETT-FACKARD LIMITED, JAPAN
Printed: MAY 1967
02337-2
Model 2Z0UA Table of Contents
TABLE OF CONTENTS
Section Page
I GENERAL INFORMATION. ....orrredoodaonmy nun mm. 1-1
1-1, Description .,..one-xreeorrmeoa arden an em ea 1-1
1-4. Terminology «oo i tv tv tb tv tessa manne 1-1
1-6. Instrument Identification .. 44444 4408 2 1 1 1 1 4 0 0 200 1-1
1-8. Applications . . ... ie hae 4 1 un 0 1-1
1-10, Specifications . . .. .. 0 iii ttt bit sam nna 1-1
1-12. Auxiliary Equipment Required ................... 1-1
II INSTALLATION . 1.222424 4 4 4 4 4 4 4 4 8 4 4 0 0 4 0 0 0 1 1 4 4 4 4 8 2-1
2-1. Introduction ....2 22421 4 1044 44 404 4 8 4 a 8 4 4 4 4 a 4 4 + 0 2-1
2-3. Unpacking and Inspection .. 2444440801 1 4 4 0 0 aa as 2-1
2-5. Storage and Shipment .......... Ce ke ee hee 2-1
2-11. Operation from 115 or 230 Volts. . ...... e s.ea mec: 2-3
2-13. 3-Conductor Power Cablé .. . 122444444005 4 4 4 0 4 444 0 2-3
IH OPERATION . 14444 04 4 4 4 4 4 4 4 4 1 6 4 8 4 8 4 41 2 4 4 000 0 3-1
3-1. Introduction .. 121442 44 10 4 6 6 8 4 4 4 4 8 8 5 2 8 4 8 0 4 0 3-1
3-3. Turn-On Procedure .. .. 2444 442 4 4 4 4 4 4 1 4 4 4 4 ww aa 3-1
3-5, Use of the DQ Vernier .. 14 44444 44 4 4 4 4 2 1 0 ore ‚ 3-1
3-17 De Resistance Measurements . ...... 4 4 6 44 281 1505 3-1
3-8 Power Considerations . . . .. . «cv vv vv vt vv awa. 3-1
3-19. Measurements ...e.ooororiodooronoere dado oro 3-1
3-16. Capacitance Measurements , .............. are. 3-3
3-117. Introduction . ..... ci iit tiene eee 3-3
3-19. Residual Capacitance. .. . 2.444444 8 1 1 4 4 1 210 0 3-3
3-21 Cs and Cp Measurement Differences ,.,......... 3-4
3-23 Measurement Procedure ., 12444 44404 44 4 4 1 0 ue 3-4
3-25 Voltage Across Unknown C ......oorreedererro 3-5
3-27, Influence of D in Cp Auto Measurement ,........ 3-5
3-29. Inductance Measurements. ....... cv vv ovr saan 3-5
3-30, Introduction 2.1 444 4 4 4 4 4 2 8 4 4 4 4 4 4 4 43 5040 0 3-5
3-32. Residual Inductance .. 1.444 41 40244 4 a 4 4 5 4 5 44 à 3-5
3-34, Ls and Lp Measurement Differences ........... 3-5
3-36, Measurement Procedure 2... 444245 44 2 1 1 1 4 4 6» 3-6
3-40, Influence of Q in Ls Auto Measurement ......... 3-6
3-42. Special Measurements .. +24 44404 40 4 0 a ee 5 4 41 000 3-6
3-43. 20 Hz to 20 kHz Measurements . . ......... 4 4 à 3-6
3-46. Operation with External Generator. ............ 3-1
3-48. Influence of Residual and Lead Impedances ,...... 3-8
3-50, Dand @ Measurements . . . . + «cv vv vv vv evn vas 3-8
3-54, C Measurements with DC Bias . .......... ая 3-8
3-57. L Measurements with DCBias ......... +. ++. 3-9
IV THEORY OF OPERATION .......... Ce eee ere ae eee 4.1
4-1. Introduction + . . ...eeanrerare reso daon num 4-1
4-3, Description . . . «e.aoanrerrdr»edraasd ana nm e no e e 4-1
4-4 General 212244 14 104 4 4 44 4 4 0 4 4 4 4 4 1 0 1 4 8 446 4-1
4-6 Block Diagram ...2.204 40440844 4 0 4 4 0 1 1 0 410 0 4-1
4-9, Basic Bridge for Resistance Measurements ...... 4-1
4-11. Basic Circuits for Capacitance Measurements . . . . 4-1
4-13, Basic Circuits for Inductance Measurements. ... .. 4-1
4-15. Range and Function Switch A100 . ........ +. cv vo 4-1
4-18, Power Supply and 1 kHz Oscillator A200 ............ 4-3
4-20, Power Supply. .. 220420400400 0 0 4 1 80 0 0 0 0 4 1 a 0 4-3
4-26. 1 kHz Oscillator. ....12 2404 4 6 1 04 00 0 01 2 1 10» 4-3
4-28, Reference Voltage A300 , .. 2.021242 4 4 4 1 4 4 4 4 1 1 10 0 4-3
4-29, Introduction 2.122244 410404 4 4 48 0 4 4 4 4 4 1 0 0 6» 4-3
4-31, Reference Phase Circuits . 111202 6 4 4 108 4 4 4 4 00» 4-3
4-34, Variable Phase Circuits 2224144 4 214 4 4444 4-4
4.37. Phase Comparator .......444144 44 4 48 5 4 04 00 4-4
4-40, Miller Integrator 4444404 204 4 0554 4 4 4000 4-4
4-42, Switch 2. 1 21 2 4 12 4 4 44 4 4 4 a 4 4 KA 4-4
02337-1 iii
— - AC > te — —.-..
Table of Contents
List of Tables
VI
VII
VII
1 F ROA E
SPHOUSONDHHREREE
t I I 1
DD DAT E Ha
iv
TABLE OF CONTENTS
THEORY OF OPERATION (cont'd) .. 111111114111.
4-44, Detector Assembly A400 . ...................
4-45. Introduction 2.444420 14 8 4 4 4 8 Era aa
4-47. Error Signal Amplifier. . , .....,.........
4-50, One-Shot Multivibrator. . ...............
4-53. Phase Detector . ...................
4-57. Differential Amplifier and Miller Integrator. . ,
4-59, ° Variable Resistance Circuit , . .. . . recrea
4-62, Differential Amplifier and Lamp Driver .,...
4-54, Chassis Assembly A500,...... .....0.0da dm iaa
4-66. Decimal Point and Direction Indicator Lamp A600 ,.,
MAINTENANCE EI 64 54 10 1 0 4 0 0 ue 1 0 1 1 8 0 4 46H AE 1 8
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Introduction 2244404 4 104 4 4 4 4 44 4 4 8 4 4 4 1 106
Test Equipment 1.444444 1 1 2 1 4 4 4 4 4 4 8 4 44 0 4 4 0
Instrument Cover Removal , ................,
Assembly Identification. ............,........
Performance Check .. 2424424444 4 4 4 4 4 4 Va un
Troubleshooting 212,224 4 444444 4 4 4 4 4 1 a 4 a 14 à
Repair 1... 2121 2 4 6 4 4 4 4 8 1 4 4 4 4 8 4 4 4 4 4 4 4 4 40
Cover and Front Panel Removal ..........
Printed Circuit Component Replacement .....
CRL Counter and R3 Replacement .........
DQ Dial and R5 Replacement .......o oros.
Adjusiments .. 141242 1 4 4 4 4 8 A 84 4 4 8 4 4 4 4 444 0
Bridge Circuit Component Checks .........
Operation Checks of Printed Circuit Assemblies . . . .
Power Supply and 1 kHz Oscillator Assy A100 .
Reference Voltage Assembly A300. ........
Detector Assembly A400 ,,.,............
1 y
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Ella al oS EE ol
PLACEABLE PARTS. ©... iii i tt tt een sss LL.
Introduction .... 1214 4 4 4 4 4 4 4 4 4 4 4 a 1 4 ee
+ + FE EF FE кк + я нон EE EE EE + 4 4 4 6 4 =m
ro +
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NUAL CHANGES AND OPTIONS ...... . ir 4 44 111 0 0
Manual Changes .. 44444 4 0 1 1 18 4 4 4 04 4 eee
Options. . . .. om oereraca aaa menors wa ere dona
er |»
CUIT DIAGRAMS , ,........ eh hh he aaa ada
Introduction 1.102422 4 4 4 4 4 8 4 4 4 4 4 8 8 8 8 8 4 4 4 à
Specifications .. 4444242 44 4 4 4 4 4 4 8 4 4 4 4 0 4 4 4 4 44 0
Correction Terms for Residual Lead Errors...........
Assembly Designations ... 1220244 44 4 4 14 4 4 4 4 4 14 440
Performance Check Test Equipment ................
Performance Checks . . . ........ 0c ii ister.
Test Equipment Required for Troubleshooting ..........
Trouble Symptoms and Possible Causes . . , , , aaa
Decimal Point and Units Indication Logie .............
Test Equipment for Bridge Circuit Checks ............
Reference Designation Index ...,44 1444 1 4 4 4 4 4 4 4 44 0
Replaceable Parts . ............ inn...
Manufacturer's Code List. . . ...............,......
Model 4260A
3-5
5-12
6-15
02337-1
AA —
Model 4260A
02337-1
LIST OF ILLUSTRATIONS
Page
Model 4260A and Accessory ....... Cee eh ae 1 1 100 1-0
Adapter Frame |. ee KK KR Kan 1 1 1 0 0 2-1
Combining Case eK .. 2=2
Front and Rear Panel Controls, Indicators and Connectors . 3-2
Capacitance and Inductance Errors in AUTO vs DE Q .... 3-5
Operation with External Generator .......... aaa 4 3-7
DE) Range vs Frequency ..... Ch he eee aaa 3-8
De Biased Capacitance Measurement .. 11445844 454 44 6 3-9
Dc Biased Inductance Measurement ................ 3-9
Basic Bridge Circuits... 124444440154 40445 8 1 eee as 4-2
CRL Light Control 1... 222440444044 44000 1 5 5 440 10e 0 4-5
Capacitance and D Accuracy Check . ................ 5-2
Internal Oscillator Check 1.244454 454 4 4 44 4 4 4 4 4 4 0 5-4
Right and Left Side Internal Component Location ........ 5-7
Error Signal Amplifier Phase and Gain Test Setup. ...... 5-8
Test Setup for Adjustments .....ecoroeeesrrerrereo. 5-11
Resistance Network for Checks, .. ..onresssroerrre o 5-12
Top and Bottom Internal Component Location . ......... 5-13
Modular Cabinet Parts . ... . co vv 40000 0 44 4 8 4 #8 44140 6-2
Schematic Diagram Notes... ....... cou, «+. B-2
Overall Block Diagram ..o.eoeoe e e red 22 a 2 6 ., 8-3
Range and Function Switch A100,
Decimal Point and Direction Light A600, Component
Location and Schematic Diagram ............. ‚т, 8-5
Power Supply and 1 kHz Oscillator A200,
Component Location and Schematic Diagram ........, 8-1
Reference Voltage Assembly A300, Component
Location and Schematic Diagram. . .. . .e=enadrrecas 6-9
Detector Assembly A400, Component Location
and Schematic Diagram .....o oo rieradanv nevar, 8-11
List of Illustrations
Section I
Figure 1-1
Model 4260A
1-0
Figure 1-1,
Model 4260A and Accessory
02337-1
HE Tt "dri i i Th re
Model 4260A
Section I
Paragraphs 1-1 to 1-13
SECTION |
GENERAL INFORMATION
1-1. DESCRIPTION.
1-2. The YHP Model 4260A Universal Bridge (Figure
1-1) makes fast, easy measurements of resistance (R),
capacitance (C), inductance (L), capacitor dissipation
factor (D}, or inductance quality factor (Q). The in-
strument includes five bridge circuits, selected by the
FUNCTION switch, as well as the detector and 1 kHz
oscillator necessary for dc and ac measurements, For
measurements at frequencies other than 1 kHz, an
external oscillator must be used.
1-3, Front panel controls select the measurement
function and range, with R, L, and C values displayed
with four-digit reselution on an in-line, digital coun-
ter. Q and D values are displayed on a dial with a
redhairline indicating the meagured value. The auto-
balance circuit and an easy-to-read meter reduce the
time required for measuring low Q or high D compo-
nents, Correct decimal point location is automatic
and direction lights indicate which way the CRL con-
trol should be rotated for the measurement.
1-4. TERMINOLOGY.
1-5. The definitions of the following terms apply as
they are used throughout this manual.
a, RESIDUAL {inductance or capacitance}: distri-
buted inductance or capacitance always present at
UNKNOWN terminals,
b. DISSIPATION FACTOR (D): loss factorior cap-
acitors (equal to reciprocal of Q).
с, QUALITY FACTOR (6): figure of merit for in-
ductors (equal to reciprocal of D).
d. Cs: represents equivalent circuit of capacitor
in series with resistor.
0. Cp: represents equivalent circuit of capacitor
in parallel with resistor,
f. Ls: represents equivalent circuit of inductor in
series with resistor,
Е. Lp: represents ‘equivalent circuit of inductor in
parallel with resistor,
02337-1
h. AUTO NULL: eliminates DQ manual control;
direction for null is automatically indicated for Cp
and Ls measurements.
1-6. INSTRUMENT IDENTIFICATION,
1-7. Hewlett-Packard uses a two-section, eight-digit
serial number (000-00000). The first three digits
(serial prefix) identify a series of instruments; the
last five digits identify a particular instrument in that
series, If the serial prefix on the rear panel of your
instrument does not agree with the serial prefix on
the title page of this manual, there are differences
between your instrument and the one described inthis
manual which are explained in the insert sheet sup-
plied with the manual, If the insert sheet is missing,
the information can be supplied by your nearest
Hewlett-Packard field office (addresses are listed at
the back of this manual).
1-8. APPLICATIONS.
1-9, The Model 4260A makes quick, easy measure-
ments of В, L, C, D, or Q characteristics of passive
electronic components, R, L, and C measurements
are made with 3- or 4-digit resolution, With external
null voltmeter, accurate measurements are possible
for milliohmsor megohms, The instrument is readily
portable (accessory carrying handle, HP 110574, can
be easily attached without screws),
1-11, Tabie 1-1 lists all technical specifications for
the Model 4260A Universal Bridge, Figure 3-4 shows
DQ range versus frequency characteristics,
1-12. AUXILIARY EQUIPMENT REQUIRED.
1-13, External de null millivoltmeter (such as the
HP Model 413A} is recommended for accurate R meas-
urements below 100 ohms and above 10 kilohms, Ex-
ternal generator (such as HP Model 200 CD) with 2 volt
output and 600 ohms output impedance is required for
20 Hz to 20 kHz measurements. External tuned null
detector with 90 dB gain and input impedance greater
than 10 kilohms or oscilloscope with 100 4 V/cm sen-
sitivity is recommended for the measurement with
external generator.
1-1
Section I
Model 42604
Table 1-1,
Table 1-1, Specifications
CAPACITANCE MEASUREMENT AUTOMATIC NULL DIRECTION INDICATOR
CAPACITANCE Direction of the CRL control rotation required for
Range: 1 pF to 1000 uF, in T ranges, the bridge null is automatically indicated by the
Accuracy: front panel indicator lights,
+{1% + 1 Digit), from 1 nF to 100 uF,
+(2% + 1 Digit), from 1 pF to 1000 y F,
Residual capacitance =2 pF,
DISSIPATION FACTOR
Range:
LOW D - - -D {of series C): 0,001 to 0, 12,
HIGH D - - - D {of parallel C): 0,05 to 50,
Accuracy:
LOW D - - -D (of series C): +(5% + 0, 002) or
ONE DIAL DIVISION, whichever is greater,
HIGH D - - - 1/D (of parallel CY: +(5% + 0,05)
or ONE DIAL DIVISION of LOW Q dial,
whichever is greater,
(C greater than 100 pF,)
INDUCTANCE MEASUREMENT
INDUCTANCE
Range: 1 uH to 10C0 H, in 7 ranges,
Accuracy:
+(1% + 1 Digit), from 1 mH to 100 H.
+(2% + 1 Digit), from 1 uH to 1000 H,
Residual inductance 5 1uH,
QUALITY FACTOR
Range: -
LOW Q - - - Q (of series LI: 0,02 ta 20.
HIGH & - - - Q (of parallel L): 8 to 1600,
Accuracy:
LOW Q - - - Q (of series L): +(5% + 0,05) or
ONE DIAL DIVISION, whichever is greater,
HIGH Q - - - 1/Q (of parallel 1): +(5% + 0. 002)
or ONE DIAL DIVISION of LOW D dial,
whichever is greater,
(L greater than 100 uH,)
RESISTANCE MEASUREMENT
RESISTANCE
Range: 10 milliohms to 10 megohms, in 7 ranges,
Accuracy:
+(1% + 1 Digit), from 10 ohms to 1 megohm,
+(2% + 1 Digit), from 10 milliohms to 10 ohms
and 1 megohm to 10 megohms,
Residual resistance = 3 millichms,
Resistance measurements at DC only.
ELECTRONIC AUTO NULL
Eliminates need for DQ adjustments in parallel C
and series L measurements at 1 kHz,
Accuracy (when D É 1, Q 2 1and CL measure-
ments are made in 3 and 4 figures) equals
[normal operating condition +0, 5%],
OSCILLATOR AND DETECTOR
INTERNAL OSCILLATOR: 1 kHz 2%, 100 mV
rms +20%,
INTERNAL DC SUPPLY: Less than 40 volts at
nominal AC line voltage,
INTERNAL DETECTOR: Tuned amplifier at 1 kHz;
functions as a preamplifier for measurements
with external generator,
EXTERNAL OSCILLATOR: 20 Hz tc 20 KHz meas-
urements of capacitance, inductance, dissipation
factor and quality factor are possible with
external oscillator (range will be a function of
applied frequency),
GENERAL
POWER SUPPLY: 115 or 230 volts +10%, 50 or 60
Hz, approx, 7 watts.
DIMENSIONS:
— —— e ba 11251 he 00 -—
|
FT |
e
SIDE FRONT
E (us)
I
| == y x
7
DIMENSIONS IN INCHES AND (MILLIMETERS) Bim
WEIGHT:
Net, 11 los, (5 kg).
Shipping, 15 Ibs, (6,8 kg).
ACCESSORY SUPPLIED: 7 ft, power cable with
NEMA plug,
EQUIPMENT AVAILABLE:
18-pin printed circuit extender board 5060-2041
15-pin printed circuit extender board 5060-0049
DC Null Voltmeter, HP Model 413A
20 Hz to 20 kHz Oscillator, HP Model 200CD
Oscilloscope, HP Model 140A
02337-2
DO — de A
Model 4260A
Section II
Paragraphs 2-1 to 2-10
SECTION II
INSTALLATION
2-1. INTRODUCTION.
2-2, This section of the manual contains informa-
tion for unpacking, inspection, repackaging, storage,
and installation of the Model 42604.
2-3. UNPACKING AND INSPECTION.
2-4, H the shipping carton ís damaged, ask that the
carrier's agent be present whenthe instrument is un-
packed. Inspect the instrument for damage (scratches,
dents, broken knobs, etc.) If the instrument is dam-
aged or fails to meet specifications (Performance
Check, Paragraph 5-9), notify the carrier and the
nearest Hewlett-Packard field office (see list at back
of this manual). Retain the shipping carton and the
padding material for the carrier's ingpection. The
field office will arrange for the repair or replacement
of your instrument without waiting for the claim against
the carrier to be settled.
2-5. STORAGE AND SHIPMENT.
2-6, PACKAGING. To protect valuable electronic
equipment during storage or shipment always use the
best packaging methods available, Your Hewlett-
Packard field office can provide packing material such
as that used for original factory packaging. Contract
packaging companies in many cities can provide de-
pendable custom packaging on short notice. Here are
two recommended packaging methods:
a. RUBBERIZED HAIR. Cover painted surfacesof
ingtrument with protective wrapping paper, Pack in-
strument securely in strong corrugated container (350
Ib/sq in. bursting test) with 2-inch rubberized hair
pads placed along all surfaces of the instrument. In-
вет! fillers between pads and container to ensure a
snug fit. Mark the box "Delicate Instrument" and seal
with strong tape or metal bands.
h. EXCELSIOR, Cover painted surfaces of instru-
ment with protective wrapping paper. Pack instrument
in strong corrugated container (350 1b/sq in. bursting
test) with a layer of excelsior about 6 inches thick
packed firmly against all surfaces of the instrument,
Mark the box "Delicate Instrument” and seal with
strong tape or metal bands.
2-7. ENVIRONMENT, Temperature during storage
and shipment should be limited as follows:
a, Minimum temperature -40°C (-40°F).
b. Maximum temperature +75°C (+167F).
2-8. The Model 4260A 1s equipped with plastic feet
and tilt stand for bench operation as shipped from the
factory. When the instrument is to be rack mounted,
a combining case {Paragraph 2-9) or adapter frame
(Paragraph 2-10) is required. These items are avail-
02337-1
able through your Hewlett-Packard Sales/Service
office, These two methods for rack mounting are
outlined in the following paragraphs:
2-9, COMBINING CASE. The combining case (HP
1052A) shown in Figure 2-2 is a modular unit which
accepts sub-module units such as the 1/2 module,
Model 42604. The combining case can be used as a
bench instrument or it can be rack mounted, A rack
mounting kit (HP No. 5060-0778) is supplied with the
instrument. When only half the case is used, a blank
filler panel (HP No. 5060-0794) is available to enclose
the unused half,
2-10, ADAPTER FRAME. The adapter frame (HP
No. 5060-0797) in Figure 2-1 is a rack frame that
accepts any combination of sub-module units; it can
only be rack mounted. Install instruments in the
adapter frame as follows:
a. Place adapter frame on edge of bench and stack
sub-module units (steps 1 and 2) in frame, Place
spacer clamp between units (step 3).
b. Insert two end spacer clamps (step 4) and push
units into frame.
C. Insert screws on either side of frame (step 5)
and tighten until units are tight in frame.
d. The complete assembly is now ready for rack
mounting,
O
ADAPTER
FRAME
Te | - A
Jem == и E
ps | ~~: AD
SUB MODULAR
©) UNIT
> ;
- TY > SPACER
— [Ramada CLAMP
SPACER CLAMP “a
RETAINING SCREWS
Figure 2-1, Adapter Frame
2-1
—_——
Section II
Figure 2-2
Model 4260A
STEP (1)
SLIDE TOR PART
TO LIMIT
STEP (2)
SLIDE BOTTOM PART
TO LIMIT
stEP (3)
PUSH IN TO LIMIT
STEP (4)
SLIDE OVER TO LIMIT
en
NE A ach”
pe dd "TE
3 TE | oo LL
; PP FA
eds ti
DIVIDER ASSEMBLY
SUBMODULE RETAINER
PUSH DOWN
TO RELEASE
STEP
PLACE INSTRUMENT
INTO CASE
pA > STEP (7)
a Fi % SET RETAINER BACK
| | INTO PLACE
/ à, E
/ - Yo
=== E
PUSH UF TO LOCK
Figure 2-2. Combining Case
02337-1
102-11, OPERATION FROM 115 OR 230 VOLTS.
2-12. The Model 4260A can be operated from either
115- or 230-volt (+10%) 50 to 60 Hz power lines, A
slide switch on the rear panel permits quick conver-
sion for operation from either voltage. Insert a nar-
row blade screwdriver in the switch slot and slide the
switch to expose 115" marking for 115-volt operation
or "230" marking for 230-volt operation. The instru-
ments are supplied with a 0. 1 ampere fuse for either
115- or 230-volt operation.
CAUTION
Do not change the 115/230 switch setting
during operation.
02337-1
Section II
Paragraphs 2-11to 2-14
2-13. 3-CONDUCTOR POWER CABLE.
2-14. The Model 42604 is equipped with detachable
i-wire power cable. Proceed as follows for instal-
lation:
a. Connect flat plug (3-conductor female connector)
to AC line jack at rear of instrument.
b. Connect plug (2-blade male with round grounding
pin) to 3-wire (grounded) power outlet. Exposed por-
tions of instrument are grounded throughthe round pin
on the plug for safety; when only the 2-blade outlet is
available, use connector adapter (HP Stock No. 1251-
0048), then connect short wire from side of adapter
to ground.
2-3/2-4
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Section III
Paragraphs 3-1 to 3-12
SECTION 1!
OPERATION
3-1. INTRODUCTION.
3-2. This section outlines operation of the Universal
- Bridge. An operating procedure is given for each
* measurement function. All front and rear controls,
connectors, and indicators are briefly explained in
Figure 3-1.
3-3. TURN-ON PROCEDURE.
3-4, Before applying power to the instrument, set
controls as follows:
a, Set FUNCTION control for type of measurement
to be made and RANGE switch near mid-range.
b. Set SENSITIVITY control near full counterclock-
wise to reduce meter sensitivity.
c. Set CRL control to 1030,
d. Set red VERNIER D3 knob full counterclockwise
to CAL,
e. Set rear-panel 115/230 volt switch to expose
numbers which correspond to the line voltage used.
f, Setrear-panel OSCILLATOR switchto INT 1 KC,
Three rear shorting straps should be in place (see
Paragraph 3-42 for special measurements).
g. If meter pointer is not mechanically centered,
center as follows:
{1) Turn instrument off. Wait 30 seconds for all
capacitors to discharge.
(2) Remove two screws which hold top cover to
rear panel and slide cover toward rear.
(3) Locate the black zero adjust screw at top center
of meter, Rotate screw clockwise until meter
pointer is to left of zero and begin moving right
toward zero,
(4) Continue to rotate screw clockwise; stop when
pointer is on zero. If the pointer overshoots
zero, repeat steps (3) and (4),
(5) When pointer is exactly on zero, rotate screw
approximately 15 degrees counterclockwise,
This is encughto free the adjustment screw from
the meter suspension. If pointer moves during
the step, repeat steps (4) and (5),
h. Apply powerto instrument by connecting ac power
cord and setting LINE switeh to ON, One of the deci-
mal point lights in the CRL counter will light to indi-
cate power is applied to the instrument. Allow 30
seconds for the instrument to stabilize. The 42604 is
now ready to use, The following paragraphs outline
procedures for standard R, L, and C measurements.
02337-2
3.5. USE OF THE DQ VERNIER.
3-6, The DQ VERNIER control provides fine electri-
cal adjusting during D or Q measurements. The DQ
dial setting does not change as the DQ VERNIER is
changed. For any setting of the DQ VERNIER, DQ
dial accuracy is maintained as outlined in Specifica-
tions, The DQ vernier is useful for large D or small
Q measurements. Using the DQ vernier for a bridge
null prevents false nulls caused by lack of resolution
with the DQ control, DQ VERNIER ranges are:
0 (CAL) to 0.001 in LOW D range
0 (CAL) to 0,016 (of 1/D) in HIGH D range
0 (CAL) to 0,016 in LOW Q range
0 (CAL) to 0,001 (of 1/0) in HIGH Q range
3-7. DE RESISTANCE MEASUREMENTS.
3-8, POWER CONSIDERATIONS,
3-9, Power applied to the unknownresistor will vary
depending upon the unknown value, the RANGE switch
position, and the CRL control setting, Maximum
open circuit voltage across the UNKNOWN terminals
is 40 Vdc. Short-circuit current through the UN-
KNOWN terminals is 25 milliamperes maximum.
Voltage across the unknown resistor can be measured
with a high input impedance Voltmeter such as the HP
410C, 412A, or 413A (see Paragraph 3-15). Current
through the unknown resistor can be measured with a
clip-on milliammeter such as the HP 428B (see Para-
graph 3-15),
3-10, MEASUREMENTS,
3-11. Resistance values between 100 ohms and 10
kilohms can be measured quickly with 1% accuracy by
using only front-panel controls, For measurements
of values between 10 milliohms and 100 ohms or be-
tween 10 kilohms and 10 megohms, an external null
meter such as the HP 413A is desirable for better
sensitivity during the measurements. Thesetwoatypes
of measurements are outlined as separate procedures
in the following paragraphs.
3-12. 100 OHM to 10 K OHM MEASUREMENTS.
a, Perform theturn-on procedure outlined in Para-
graph 3-3.
b, Set FUNCTION switch to R position.
с. Connect the resistor to be measured to the UN-
KNOWN terminals,
а. Ве! RANGE switchfor meter indication near cen-
ter and increase meter sensitivity by rotating SENSI-
TIVITY control clockwise. If meter indication is right
of center, turn CRL control cew. If left, turn CRL
control ew. Adjust CRL control for meter center indi-
cation while increasing SENSITIVITY control to maxi-
mum sensitivity (full cw}.
3-1
Section IM Model 42604
Figure 3-1
10, 11 J 34 19
:
3 В !
Ae 7 4
10 Jane Ll ; 3
11 7
6 9 я
1 4 2 b 9 8 1
FRONT PANEL 11, DQ Dial: indicates Dissipation Factor (I} or Quality
hab, Factor (G), Mechanically rotated by DQ control. Dial
1. LINE Switch: applies ac line voltage to Instrument, scales are: LOW D: .001 to .12; HIGH D, .05 to 50,
2. SENSITIVITY: controls meter sensitivity; cw for max, LOW @ 02 to 20; HIGH G: 8 to 1000,
J. RANGE switch: selects measurement range. Mech-
anically controls equivalent circuit and units displayed REAR PANEL
in window below meter and also pointer for DG dial, 1. AC LINE Connector: connects to flat plug on power
4. FUNCTION switeh: seleets type of measurement, cable.
Mechanically controls units value displayed in window 2. LINE Voltage Switch: permits operation from either
below meter, Changes decimal point placement in nu- 115 Vac or 230 Vac.
merical display.
. 3. LINE fuse: 0,1 ampere provides overload protection,
3. Null Meter; indicates null at center scale. For R
measurements, meter deflects either left or right. 4, OSCILLATOR INT=EXT switch: selects internal oscil -
For Cor L measurements, meter deflects right only lator or external oscillator and controls error signal
until nulled. amplifier frequency response. For INT setting, error
6 inal signal amplifier ls tuned to 1KHEz;for EXT, amplifier
‚ UNKNOWN terminals: connect component tobe meas- response is flat between 20 Hz and 20 kHz.
ured between these twohbinding posts, Connect directly
or use very short leads. 5. External Oscillator Terminals: connect external os-
¢illator to these terminals,
7, CRL control: adjusts bridge balance for meter null
during measurements. Mechanically connected to nu- 6. DETECTOR Output Terminals: error signal amplifier
merical counter which indicates R, L, or C measured output supplied to external tuned amplifier or oscillo-
value, Direction lights just above control indicate ro- scope.
ju direction for null on meter (for Cp AUTO or Ls 1. DQ RESISTOR Cs Lp Terminals: connect variable re-
UTO functions only). sistor for special low frequency D (Cs function) or Q
8. Tecimal Polnt Lights: one of three lights (selected by {Lp function) measurements, Terminals normally con-
FUNCTION and RANGE switch positions) indicates cor- nected together with shorting strap.
ree! coon point ght on indicates ac line voltage B. DQ RESISTOR Cp Ls/ BIAS CAPACITOR Terminals:
5 applicc to Lae nsirument. Connect variable resistor for special low frequency D
8. Numerical Counter; displays value of R, L, or С. (Cp function) or @ {Ls function) measurements. For
Mechanically driven by CRL control, Range ls from C or L measurements with dc bias, connect a capacitor.
0000 to 1030. Terminals normally connected together with shorting
10. DQ Control: outer black knob rotates DQ dial for D or strap.
Q measurements, Red center knob is a vernier; does 9. BIAS BATTERY Terminals: connect battery (6 Vdc
not rotate dial. DQ scale is calibrated with vernier max) for C or Lh measurements with de blas. Termi-
full counterclockwise. nals normally shorted together with shorting strap,
Figure 3-1. Front and Rear Panel Controls, Indicators and Connectors
3-2 02337-2
agen — Aa 1
ZZ |
on serve decimal point location and units displayed
ih window below meter.)
Note
For maximum resolution, final CRL coun-
ter display should be greater than 0100.
"3-13, MILLIOHMS AND MEGOHMS MEASUREMENTS,
> For measurements between 10 milliohms and 100 ohms
Por between 10 kilohms and 10 megohms, a sensitive
-. -de null voltmeter such as the HP 413A should be used.
2 “Referto Paragraph 3-15 for voltage and current meas-
5 urements for the unknown В. Connect the null volt-
+ “meter and make resistance measurements asiollows:
a. Remove the shorting straponthe voltmeter rear
panel ground terminals to avoid ground loops.
b. Perform the turn-on procedure outlined in Para-
graph 3-3.
c, Connect the voltmeter input ground or low term-
inal to the rear-panel detector ground terminal onthe
Universal Bridge. Connect UNKNOWN LOW terminal
to the other Voltmeter input terminal.
d, Set FUNCTION switch to R.
: : @ Connect the resistor to be measured to the UN-
KNOWN terminals.
E f. Set RANGE switch for meter indication near the
> “center and increase meter sensitivity by rotating
SENSITIVITY control clockwise, If meter indication
ig right of center, turn CRL control cew, If left, turn
CRL control cw. Adjust CRL control for meter cen-
ter indication while increasing SENSITIVITY control
to maximum sensitivity (full cw),
g. Read measured resistance value on CRL coun-
ter, (Observe decimal point location and units dis-
played in window below meter, )
CAUTION FOR LOW RESISTANCE
MEASUREMENTS
For best connection to the bridge, leads
should be inserted into the binding posts,
and the binding posts should be screwed
tightly to reduce contact resistance. Short
heavy leads can be used. Lead resistance
should be measured with the free ends con-
nected together. Subtract the lead resis-
tance from the bridge reading.
3-14. The fastest procedure for R measurements is
as follows:
a, Set FUNCTION switch to R position.
b. Connect the resister tothe UNKNOWN terminals.
¢. Turn CRL control cw to 1030,
d. Increase SENSITIVITY for deflection (right or
left) on the null meter,
02337-1
E Read measured resistance value on CRI counter,
Section III
Paragraphs 3-13 to 3-20
e. Rotate the RANGE switch until the meter pointer
passes the null, If meter deflection is right, perform
step f. If meter deflection is left, turn RANGE switch
one step cw. Adjust SENSITIVITY control for right
deflection.
f. Turn CRL control cow to obtain a null on the
meter; set SENSITIVITY control full cw, adjust for
the null with CRL control.
g, Read the final resistance on CRL counter along
with the unite display.
3-15, VOLTAGE AND CURRENT FOR UNKNOWN К,
When voltage and current values for the unknown are
to be measured, a dc voltmeter such as the HP 413A
should be used with a current meter such as the HP
428B clip-on milliammeter. Make voltage and cur-
rent measurements as follows:
a. Make the resistance measurements as outlined
in Paragraph 3-12 or 3-13 and leave the Model 42504
set up for the null.
b. Remove the shorting strap on the voltmeter rear
panel ground terminals to avoid ground loops,
с, Connect the voltmeter input ground or low ter-
minal to the rear-panel detector ground terminal on
the Universal Bridge. Connect the UNKNOWN high
terminal to the other voltmeter input terminal,
d. Read voltage across the unknown R on the volt-
meter.
e, For current through the unknown R, clip the
milliammeter probe to one of the unknown leads and
read unknown current.
3-16. CAPACITANCE MEASUREMENTS.
3-17. INTRODUCTION,
3-18, Capacitance measurements are normally made
at a frequency of 1 kHz from the internal oscillator,
For C measurements at frequencies between 20 Hz
and 20 kHz, an external oscillator can be connected,
as outlined in Paragraph 3-42, Special Measurements,
Direction lights indicate the correct rotation direc-
tion for Cp AUTO measurements. The measured C
value is displayed on the CRL counter with correct
decimal point location, units and equivalent circuit
also displayed. Dissipation factor (D) can be meas-
ured after the bridge is balanced for the capacitance
measurement, The measured D value is displayed on
the DQ dial.
3-19. RESIDUAL CAPACITANCE.
3-20. The residual capacitance of the UNKNOWN
terminals can he measured with nothing connected to
these terminals, Ks value is typically 2 pf or leas,
When smail capacitance meagurements are made, this
residual capacitance should be subtracted from the
measured value. I external leads are used to connect
the unknown, the residual capacitance measurement
should include the lead capacitance, Errors caused by
residual andlead capacitances are listed in Table 3-1.
3-3
Section III
Paragraphs 3-21 to 3-23
Table 3-1. Correction Terms for Residual Lead Errors
(Add to Measured Value as Indicated)
Model 42604
Measured Series Resistance Series Inductance Parallel Capacitance
Quantity Ro Lo Co
2,1 2 2
с. No error -4п Lo e -C, (1 - D}
2,2 7
D of Cs -2nf Ro с. -4 п} Lo C.D, + D, (1 + р.) Eye,
2 21 а a
Cp r4rfR €, D, -4 5° f L, C, (1 - р.) бо
_ 2 A? 2
D of Cp 2niR C (1 + D} 4 pif L,C,D, (1+D} + D, eE,
R -R, No error No error
2,2 1
Ls No error "Бо -47 Co L, (1 ea )
2 В Lo 3 2 1
— Y _— - —
Q of Ls +Q sut Pa +n? CL (Q, + a
X X
Ro 1 7
L - -L (1- dr?
Р TQ of a ) arte E
Ro , L, 1 2.2
Q of Lp * HAL U+Q - ‘9, * @) +4 1 CL Q
X X
where О is frequency
Cx is unknown capacitance
D, is unknown D
Ly is unknown inductance
Qu is unknown Q
3-21. Св AND Cp MEASUREMENT DIFFERENCES,
3-22. The measured value of capacitance depends on
whether a series or parallel equivalent circuit is used
for the measurement. The relationship between a
series capacitance (Cs) circuit and a parallel capaci-
tance {Cp) circuit is as follows: Cs = (1 + D?) Cp,
where D is the measured D value. The difference
between Cs and Cp is large when D is greater than
0.1 but Cs is within 1% of Cp if D is 0. 1 or less.
3-23. MEASUREMENT PROCEDURE.
a. Perform the turn-on procedure outlined in Para-
graph 3-8,
b. Check to insure that the 3 DQ RESISTOR and BIAS
terminal pairs onthe rear panel are shorted withtheir
respective shorting straps,
с. Rotate the SENSITIVITY control full cow,
d. Set FUNCTION switch to Cp AUTO position.
€. Connect the capacitor to be measured to the UN-
KNOWN terminals,
3-4
I, If the right direction indicator is lit, rotate CRL
control clockwise. H the left direction indicator is
lit, rotate CRL control counterclockwise. Rotate
SENSITIVITY control clockwise to give near full scale
meter deflection.
g. If the CRL control is fully cw and the right di-
rection indicator remains lit, turn RANGE switch cow
until left direction indicator lights. Adjust CRL con-
trol for meter null and rotate SENSITIVITY control
CW as null is approached.
h. When null (bridge balance) is achieved below
0100 on the CRL indicator, set RANGE switch to the
next position cw and rotate CRL control for null indi-
cation. (This is possible for all measurements above
100 pf.) Capacitance is indicated on the CRL counter,
i. To measure D for the unknown capacitor, set
FUNCTION switch to Cp HIGH D position,
J. Adjust DQ control for minimum meter indication.
(The CRL control can be adjusted slightly for best
null, )
К. When a null indication is impossible in the Cp
HIGH D position, set FUNCTION switch to Cs LOW D,
02337-2
D of the unknown capacitor is read from the D scale
* Ewilleated by the red pointer in the DQ window.
8.24, The fastest procedure for C measurements is
- às follows:
2, Set FUNCTION switch to Cp AUTO position.
b. Connect capacitor to unknown terminals,
ec, Turn the CRL control cw to 1030,
d. Rotate RANGE switch until a crossover point of
- the indicator lights is obtained, (Left indicator lights
Instead of right one and vice versa.) I you cannot
obtain a crossover, see step e note.
e. I left indicator lights, adjust SENSITIVITY con-
“trol for a right deflection of the null meter pointer.
K the right indicator lights, furn RANGE switch one
step cew and adjust SENSITIVITY control for a right
deflection of the null meter pointer, Note: if the
right indicator stays lit regardless of the RANGE
switch position, the unknown value of the capacitor
must be beyond the highest range of the bridge ( >
1000 pf), I the left indicator stays lit regardless of
the RANGE switch position, the unknown value of the
capacitor must be below 1000 pF.
: £L Rotate the CRL control ccw until a crossover of
the indicator lights is obtained.
= £, Set SENSITIVITY full ew and adjust for null with
- CRL control.
h, Read final capacitor value on the CRL counter
and units display.
3=25. VOLTAGE ACROSS UNKNOWN C,
3-26, When voltage across the unknown C is to be
measured, a vacuum tube voltmeter such as an HP
400D, 400H, or 400L should be used. The procedure
is as follows:
a, Make the capacitance measurement as outlined
In Paragraph 3-23, and leave the instrument set up at
null,
b. Isolate the Voltmeter from power line ground by
using a two-prong power cord adapter and leaving the
adapter pigtail lead disconnected from ground,
—€. Connect the Voltmeter input ground terminal to
the 42604 rear panel detector ground terminal,
d. Connect the other voltmeter input terminal tothe
42680A UNKNOWN terminal {not the LOW terminal),
Read the voltage across the unknown C onthe voltmeter.
8-27, INFLUENCE OF D IN Cp AUTO
| MEASUREMENT
9-28. The accuracy that is specified for Cp AUTO
measurement is obtained when D is less thani, When
D is greater than 1, accuracy of Cp AUTO measure-
02337-1
Section III
Paragraphs 3-24 to 3-35
ment is reduced due to the reactance of the variable
resistance circuit of the AUTO null. Typical data is
shown in Figure 3-2,
ALLOWABLE ERROR ]
EXPECTED ERROR (NOT SPECIFIED)
TYPICAL
+6
+4
CL ERROR)
© г
i
Ma
-4
05 10 20 50 LG 22 5010 zo 50
Q 20 Ю 50 20 1.0 03 Ce e. 02
a
Figure 3-2, Capacitance and Inductance
Errors in AUTO ys DE Q
3-29. INDUCTANCE MEASUREMENTS.
3-30, INTRODUCTION,
3-31, Inductance measurements are normally made
at frequency of 1 kHz fromthe internal oscillator. For
L, measurements at frequencies between 20Hz and 20
kHz, an external oscillator can be connected, as out-
lined in Paragraph 3-42, Special Measurements. Di-
rection lights indicate the correct rotation direction
for Ls AUTO measurements. The measured L value
is displayed on the CRL counter with correct decimal
point location, units, and equivalent circuit also dis-
played. Quality factor (Q) can be measured after the
bridge is balanced for the inductance measurement.
The measured Q value is displayed on the DQ dial,
3-32. RESIDUAL INDUCTANCE,
3-33, Residual inductance of the UNKNOWN terminals
can be measured with heavy short wire connected to
these terminals, Ms value is typically 1 uh or less.
When small inductance measurements are made, this
residual inductance should be subtracted irom the
measured value. Ifexternal leads are used to connect
the unknown, the residual inductance measurement
should include the lead inductance. Errors caused by
residual and lead inductances are listed in Table 3-1
3-34. Ls AND Lp MEASUREMENT DIFFERENCES,
3-35. The measured value of inductance depends on
whether a series or parallel equivalent circuit is used
for the measurement, The relationship between a
series inductance (Ls) circuit and a parallel inductance
(Lp) circuit is as follows:
3-5
Section IH
Paragraphs 3-36 to 3-45
whereQ is the measured @ value, The difference be-
tween Ls and Lp is large when Q is smaller than 10,
but Ls is within 1% of Lp ií Q is 10 or greater.
3-36, MEASUREMENT PROCEDURE.
a. Perform the turn-on procedure outlined in Para-
graph 3-3,
b. Check to insure that the 3 DO RESISTOR and
BIAS terminal pairs on the rear panel are shorted with
their respective shorting straps.
с, Rotate the SENSITIVITY control full ccw,
d. Set FUNCTION switch to Ls AUTO position,
e, Connect the inductor to be measured to the UN-
KNOWN terminals,
i. If the right direction indicator is lit, rotate CRL
control clockwise. I the left direction indicator is
lit, rotate CRL control counterclockwise. Rotate
SENSITIVITY control clockwise to give near full scale
meter deflection,
g. If the CRL control is fully ew and the right di-
rection indicator remains lit, turn RANGE switch cw
until left direction indicator lights, Adjust CRL con-
trol for meter null and rotate SENSITIVITY control
¢w as null is approached.
h. When null (bridge balance) is achieved below
0100 on the CRL counter, set RANGE switch to next
position cow and rotate CRL control for null indica-
tion, (This is possible for all measurements above
100 4H.) Inductance value is indicated on the CRL
counter,
1. To measure @ for the unknown inductor, set the
FUNCTION switch to Ls LOW Q position,
j. Adjust DQ control for minimum meter indica-
tion, (The CRL control can be adjusted slightly for
best null.)
k, When a null indication is impossible in the Ls
LOW @Q position, set FUNCTION switch to Lp HIGH ©,
Adjust DQ control for minimum meter indication,
The Q of the unknown indicator is read from the Q
scale indicated by the red pointer in the DQ window,
3-37, The fastest procedure for L measurements is
as follows:
a, Set FUNCTION switch to Ls AUTO position.
b, Connect inductor te unknown terminals,
с, Turn CRI control cw to 1030,
d. Rotate RANGE switch until a crossover point of
the indicator lights is obtained, (Left indicator lights
instead of right one and vice versa.) I you cannot
obtain a crossover, see step e note.
3-6
Model 42604
e, If the left indicator lights, adjust SENSITIVITY
control for right deflection of the null meter pointer,
If the right indicator lights, turn RANGE switch one
step cw and adjust SENSITIVITY control for right de-
flection of the null meter pointer. Note: if the right
indicator stays lit regardless of the RANGE position,
the unknown value of the inductor must be beyond the
highest range of the bridge (> 1000 H). I the left in-
dicator stays lit regardless of the RANGE position,
the unknown value of the inductor must be below 1000
microhenries.
f. Rotate CRL control cow until a crossover of the
indicator lights is obtained.
eg, Set SENSITIVITY full cw and adjust for null with
the CRL control.
h, Read final inductor value onthe CRL counter and
units display.
3-38, VOLTAGE ACROSS UNKNOWN L,
3-39. When voltage across the unknown L is to be
measured, a vacuum tube voltmeter such as an HP
400D, 400H, or 400L should be used along with a
capacitive voltage divider (HP 11041A), The proce-
dure is as follows:
a. Make the inductance measurement as outlined
in Paragraph 3-36, and leave the instrument set up at
null.
b. Isolate the Voltmeter from power line ground by
using a two-prong power cord adapter and leaving the
adapter pigtail lead disconnected from ground.
¢. Connect the Voltmeter divider ground lead tothe
4260A rear panel detector ground terminal.
d, Connect the Voltmeter divider probe to the UN-
KNOWN terminal (not the LOW terminal), Read the
voltage across the unknown L on the Voltmeter.
3-40, INFLUENCE OF Q IN Ls AUTO
MEASUREMENT,
3-41, The accuracy specified for Ls AUTO measure-
ment is obtained when Q is more than 1. When Q is
smaller than 1, accuracy of the Ls AUTO measure-
ment is reduced due to the reactance of the variable
resistance circuit of the AUTO NULL, Typical data
is shown in Figure 3-2.
3-42, SPECIAL MEASUREMENTS,
3-43, 20 Hz TO 20 kHz MEASUREMENTS,
3-44, Bince the 42504 internal oscillator frequency is
fixed at 1 kHz, an external generator must be con-
nected ior measurements at irequencies between 20
Hz and 20 kHz. For such measurements, an audio
oscillator with 600 ohms output impedance (Hp 2084,
204B, or 200CD) and a voltmeter (HP 403B or 400D,
400H, 400L) are recommended.
3-45, If the presenceof a non-linear unknowncauses
appreciable distortion in the 42004 detector, the best
null indication may not give the correct value for the
02337-1
del 42604
ed unknown. Also, if electromagnetic or static
on from the ac line or other source affects the
‘these cases, a tuned null detector or selective amp-
QMier with 90 dB gain and input impedance above 10K
“Mbms is recommended.
Note
The electronic auto null circuit and direction
indicator lights do not operate for measure-
mente with an external oscillator.
3-48, OPERATION WITH EXTERNAL GENERATOR.
CAUTION
DO NOT APPLY MORE THAN 2 VOLTS RMS
AT THE EXT. OSCILLATOR TERMINALS.
3-41. For impedance measurements at frequencies
other than 1 kHz (between 20 Hz and 20 kHz), con-
pect the external oscillator and associated equipment
as shown in Figure 3-3 and proceed.
| a. Check to insure that the DQ RESISTOR Cs Lp
and Cp Ls terminals and BIAS terminals onthe instru-
ment rear panel are shorted by their shorting straps.
b. Set external oscillator output voltage to mini-
mum and connect to EXT. OSCILLATOR terminals
(see Figure 3-3).
e. For the most accurate and sensitive measure-
‘ments, a tuned null detector such as the HP 302A is
‘recommended. However, an oscilloscope with 100
microvolt/cm such as the HP 140A with 14004 plug-
in can be used. Connect the 4260A UNKNOWN LOW
terminal tothe null detector high input terminal. Con-
nect the detector low or ground terminal tothe 4260A
и сч rn, a satisfactory null indication will be difficult.
Section III
Paragraphs 3-46 to 3-47
Note
Bridge null can be obtained using a tuned
null detector with less than 90 dB gain con-
nected to the DETECTOR terminals, (The
DETECTOR terminals are connected to the
output of thé internal pre-amplifier.) For
most accurate and sensitive measurements,
the method shown in Figure 3-3 is
recommended.
d. Set the 4260A INT-EXT OSCILLATOR switch to
EXT,
e Set the FUNCTION switch to Cs LOW Dor Cp
HIGH D for capacitance measurements, or to Ls LOW
Q or Lp HIGH Q for inductance measurements.
f. Connect the unknown component tothe UNKNOWN
terminals,
€. Adjust the SENSITIVITY control for near full
scale deflection and set RANGE switch for minimum
on meter.
h, Adjust CRL and [email protected] controls for minimum meter
indication, SENSITIVITY control can be adjusted cw
as bridge balance is approached.
i. Read capacitance or inductance of the unknown
on the CRL counter, Correct decimal point, units,
and equivalent circuit are also displayed. TheD or @
of the unknown is computed as follows:
For LOW D (D of series C): De = e where Df is
2
the D value at applied frequency ! (kHz), D, is the D
reading on the D scale.
rear-panel detector ground terminal. For HIGH D (D of parallel C): Dg = Dp { 1 =>) .
HP200 CD our a IE -— HP 4260A
OSCILLATOR EXT OSC Ce ; DE REAR PANEL
> ;
IN
HPAZEOA Gy fy 5 у) HP302A
FRONT PANEL | | : a A TUNED NULL
< + wo | LOW DETECTOR
. i
= и
* DO МОТ GROUND CABINET
Figure 3-3, Operation with External Generator
02337-1
3-1
Section IT
Paragraphs 3-48 to 3-55
For LOW Q (Q of series L): Qf = Q, TE
where Q; is the Q value at applied frequency I (kHz)
and Qy is the Q reading on the Q scale,
1 kHz
For HIGH Q (Q of parallel L): Qr = Q, f
3-48. INFLUENCE OF RESIDUAL AND LEAD
IMPEDANCES.
3-49, At frequencies above 1 KHz, errors resulting
from residual bridge impedances and lead impedances
become significant, Table 3-1 lists the correction
terms for these errors,
3-50. D AND @ MEASUREMENTS,
3-51. GENERAL. Measured D or Q values are a
function of the frequency applied during measurement.
Figure 3-4 illustrates the possible values of D or Q
‘for minimum error at various frequencies. Dor Q
values which fall in the overlap area of Figure 3-4
can be measured with the FUNCTION switch set for
any D or Q measurement except AUTO. However,
below 650 Hz there is a groupof D or Q values (shaded
area of Figure 3-4) which can be measured by adding
an external DQ resistor. This DQ resistor addition
is autlined in the following paragraph.
3-52. EXTENDING THE D AND Q RANGES. An ex-
ternal resistor added at the instrument rear-panel DQ
RESISTOR terminals will extend the D and Q ranges.
To avoid error, Cp HIGH D and Ls LOW Q should not
be extended below a value of 0.1 at the frequency of
measurement. The DQ resistor should be added as
follows:
00 100
100 100k
200 5ot
500 720}
Le LO}
en:
CplLs
00 OJO
Lo .GIOF
000 ‚001
9 Di 0 | | || ; Cl |
20 50 200 500 2 5 20 50
lOHz lOCHz [kHz [QHZ |CGOKHZ
FREQUENCY —
EXTERNAL DO RESISTOR REQUIRED
Figure 3-4. DQ Range vs Frequency
3-8
Model 42604
a. For Cs LOW D or Lp HIGH Q measurements,
remove the shorting strap from the rear=-panel DQ
RESISTOR Cs Lp terminals.
b. The external resistor should be selected as
follows:
1) maximum current: 6 milliamperes, resistance
range: 0 to 300K ohms.
2) use a metal film or carbon film resistor.
Note
The resistance of the external resistor used
can be measured with the 426004 after the D
or @ measurement is completed.
c. Connect the external resistor tothe DQ resistor
terminals from which the shorting strap was removed
in step a.
d. With the external DQ resistor and oscillator con-
nected, balance the bridge with the RANGE switch,
CRL, and DQ controls. Read the value of the
unknown irom the CRL counter and decimal point,
units, and equivalent circuit as displayed.
3-53. The D or Q or the unknown is given as follows:
{от LOW D (D of Cs), D.=(1.256R+ Dy) f where Df is
the D value at applied frequency f (kHz); Dy is the D
reading on the D scale; and R is the external resistor
value in K ohms. For HIGH D (D of Cp),
1
D. =
17 (1.256 R+ 5)
r
For LOW Q (q of Ls), Q = (1, 256 В + Q,) f; where
Qf is the Q value at applied frequency i (KHz); Qr is
the Q reading on the Q scale; and R is the external
resistor value in K ohms. For HIGH Q (Q of Lp),
1
Q= (1.256R + A Ni
1
Qr
3-54, C MEASUREMENTS WITH DC BIAS.
3-55, GENERAL. À debias voltage (6 vdc maximum)
can be applied to capacitors such as electrolytic types
during the C measurement. Figure 3-5 schematically
illustrates the de bias application, Operating proce-
dure for dc-biased measurements is described below
and pictorially shown in Figure 3-5. The following
equipment will be required:
1. 6 Yde battery or dry cell.
2. electrolytic capacitor (aluminum or tantalum) des-
ignated Cy) 6 Vdew, more than 100 uF at 1 kHz
or more than (100 kHz/f) HF.
dc voltmeter, VTVM not required.
electrolytic capacitor {aluminum or tantalum) des-
ignated (Cp) 6 Ydew, more than (200% ) НЕ for
less than 1% error measurements. Dy is the D
value of the unknown,
02337-2
ado
Az
TEESE ог.
7
ide! 42604
With the FUNCTION switch set to Cp HIGH D, the ca-
ipatitance of C,, required depends upon the unknown D
nd desired accuracy. The error introduced by Cr is:
E с,
he, — > 2
; measured C = e 1 с D, ) and
Cy ,
measured D = D, (1 + on D_) ,
‘where Ct =0.2 uF and C, or Dyis the correct С ог О
-value of the unknown.
3-56, PROCEDURE.
a. Connect the measurement setup as shown in Fig-
-ure 3-5. All Instrument cabinets except 4260A must
be isolated from power line ground,
b. Connect the unknown C to the UNKNOWN termi-
“nals.
CAUTION
The LOW UNKNOWN terminal is at de posi-
tive potential. DO NOT APPLY A DC BIAS
YOLTAGE GREATER THAN 6 YDC OR A
DC BIAS CURRENT GREATER THAN 10
MILLIAMPERES,
i.e. Set FUNCTION switch to Cp AUTO position for
3 aneasurements withthe internal 1 kHz generator, Ad-
: just RANGE switch and CRL control for bridge bal-
=ance (meter null). Read the measured € value on the
© CRL counter,
3-57, L MEASUREMENTS WITH DC BIAS.
— 3-58, GENERAL, A de bias voltage (6 Vdc maximum)
can be applied to an unknown inductor during the L
DETECTOR
Cl
AJS Ne Rd ем
`
BIAS ВУ МАХ
+———
+ 1 СУ
1%
(у)
NOTE: (REAR PANEL]
JÉ BIAS BATTERY
J? BIAS CAPACITOR Cpls
JR DQ RESISTOR Csip
Figure 3-5. Dc Biased Capacitance
Measurement
02337-2
OZ 80 & = 3
Section III
Paragraphs 3-56 to 3-59
measurement. Figure 3-6 schematically illustrates
the dc bias application. Operating procedure for dc-
biased measurements is described below and pic-
torially shown in Figure 3-6. The following equipment
will be required:
1. 6 Vde battery or dry cell.
2. electrolytic capacitor (designated C,), aluminum
or tantalum, 6 Ydew, more than 100 uF at 1 kHz
or more than (100 kHz/f) HF.
3. de milliammeter, VTVM not recommended, or
clip-on milliammeter HP 428B.
4. electrolytic capacitor {designated Cr), aluminum
or tantalum, 6 vdew, more than (20/0, ) uF for
less than 15, error measurements. Qu is the Y
of the unknown L.
With the FUNCTION switch set to Lp HIGH Q, the ca-
pacitance of Cr depends upon the unknown Q and de -
sired accuracy. The error introduced by Cy is:
С
_ t
measured L = L, { 1 - Ta
С
measured Q = QU - — a) where Lo or Q, is
L
the correct Lor Q value of the unknown.
3-59, PROCEDURE.
a. Connect the measurement setup as shown in Fig-
ure 3-8. Ground only the 4260A cabinet . to power
line ground,
DETECTOR
LOW" | |
de Ad ем
Er
MOTE: {REAR PANEL)
JE BIAS BATTERY
JT BIAS CAPACITOR Cpla
JB DE RESISTOR Calp
Figure 3-6. Dc Biased Inductance
Measurement
3-9
Section III
Paragraphs 3-60 to 3-61
b. Connect the unknown L to the UNKNOWN
terminals.
CAUTION
LO NOT APPLY A DC BIAS VOLTAGE
GREATER THANE VDC OR A DC BIAS
CURRENT GREATER THAN 10 MA,
c, Set FUNCTION switch to Ls AUTO position for
measurements with the internal 1 kHz generator, Ad-
just RANGE switch and CRL control for bridge bal-
ance (meter null), Read the measured L value on the
CRL counter,
3-60. RESISTANCE MEASUREMENT AT 1 kHZ.
3-61, To make AC resistance measurement at 1 kHz
refer to Figure 3-1, and perform the following steps:
Model 42604
a. Remove shorting strap across DQ RESISTOR
(CsLp) terminals on rear panel,
b. Connect accurate 500 ohm metal filin resistor
(+1% or less) between right CsLp terminal and CpLs
terminal immediately below, DO NOT REMOVE
STRAP ON CpLs TERMINAL,
с, set DG knobs full counter clockwise.
a. Set FUNCTION switch to Lp HIGH Q,
e, Make measurement using RANGE switch and
CRL dial,
f. Multiply inductance reading in Henries by 10, 000
to convert to ohms, For example, 1 milllhenry is
10 ohms,
02237-2
ME rade! 42604
Section IV
Paragraphs 4-1 tc 4-16
SECTION IV
THEORY OF OPERATION
4-1, INTRODUCTION.
4-2, This section includes circuit operation details
for the Universal Bridge. A general description of
operation is given first, with details of the various
circuits following. Each assembly in the instrument
is discussed in the order of its assembly designation
(A100, A200, etc.) as listed in Table 4-1,
Table 4-1. Assembly Designations
A100 Range and Function Switch 04260-7021
A200 Power Supply and 1 kHz
Oscillator 04260-70223
A300 Reference Voltage 04260-7023
A400 Detector 04260-7024
A600 Decimal Point and Direction
Indicator 04260-7026
4-3, DESCRIPTION.
4-4, GENERAL.
4-5, For capacitance and inductance measurements
with the FUNCTION switch set to Cp AUTO or Ls
AUTO, a 1 kHz signal drives the bridge and balance
is achieved by selecting the proper range and adjust-
ing only the CRL control. This is possible because
a voltage-controlled resistor is substituted for one
resistor in the bridge circuit. Thus, simultaneous
adjustment of more than one control is eliminated.
4-6, BLOCK DIAGRAM,
4-7, Figure 8-2 illustrates the bridge and auto null
circuits. The ‘auto null circuits are used when the
FUNCTION switch is set to Cp AUTO or Ls AUTO
position. As seen in Figure 8-2, the phase detector
recelves two signals: 1) an error voltage from the
detector amplifier which is proportional to bridge
unbalance, and 2) a reference voltage derived from
the 1 kHz signal source. The phase detector output
voltage is therefore proportional tobridge unbalance,
This proportional voltage is applied through a dc am-
— plifier tothe voltage-controlled resistor circuit. This
controlled value is the resistance of the one arm of
the bridge. As the CRL control is rotated to achieve
bridge balance, the voltage-controlled resistor value
electronically follows the CRL control. Thus, when
bridge balance is achieved, no error voltage is pres-
ent and the null meter.indicates zero.
4-8, In generating the reference signal input to the
phase detector, two voltages are applied to the ref-
erence phase comparator, The comparator voltage
output has a phase relationship, § , with respect to
the driving signal. The phase multiplier translates
this relationship to 28, since 29 is the most effec-
02337-1
tive angle for maximum sensitivity in the circuit,
This 28 information is applied to the reference volt-
age generator and a 1 kHz square wave results which
is displaced in phase by 26 from the driving voltage.
The generated 20 reference signal is then applied to
the phase detector for comparison with the bridge
error voltage,
4-9. BASIC BRIDGE FOR RESISTANCE
MEASUREMENTS,
4-10. Figure 4-1A shows the basic bridge circuit
used to measure resistance. A four-arm bridge cir-
cuit is formed by resistors Ra, Rx, Rs, and Rb, RX
is the fixed unknown R to be measured; Ra is deter-
mined by the value of Rx; Rs is a fixed value; and Rb
is variable to adjust for bridge balance, In actual use,
the Model 4260A bridge circuit is adjusted for a null
indication on the meter with the CRL control and the
unknown resistance is read directly from the display
with correct units and decimal point placement.
4-11. BASIC CIRCUITS FOR CAPACITANCE
MEASUREMENTS,
4-12. Figure 4-1B illustrates the basic bridge cir-
cuit for parallel capacitance (Cp HIGH D) measure-
ments at 1kHz. Figure 4-1C illustrates abasic bridge
circuit for series capacitance (Cs LOW D} measure-
ments. For parallel capacitance measurements with
the FUNCTION control set to Cp AUTO, the basic
bridge circuit is shown in Figure 4-1D,
4-13. BASIC CIRCUITS FOR INDUCTANCE
MEASUREMENTS.
4-14. Figure 4-1E illustrates the basic bridge circuit
for series inductance (LOW Q) measurements at 1kHz.
Figure 4-1F illustrates the basic bridge circuit for
parallel inductance (HIGH Q) measurements at 1 kHz.
For series inductance measurements with the FUNC-
TION awitch set to Ls AUTO, the basic bridge circuit
is shown in Figure 4-1G.
4-15. RANGE AND FUNCTION SWITCH A100.
{Schematic Diagram, Figure 8-3 )
4-16. Assembly A100 consists of RANGE switch 5101,
FUNCTION switch 8102, and a printed circuit board
for lead and component connections. The RANGE and
FUNCTION switches route signals in the instrument
for proper operation. RANGE switch S101 selects the
resistor which forms one arm of the bridge circuit
for balancing during a measurement. The selected
resistor correctly attenuates the applied signal. Ca-
pacitors C101 through C105 provide frequency comp-
ensation for certain ranges when ac voltages are
applied during L or C measurements.
4.1
Section IV
Figure 4-1
Model 4260A
De Resistance НВ
Rx = RaRb/Rs
A dc voltage from battery ВТ1 is applied between
bridge points 0 and P, Variable resistors Ra and Rb
are adjusted for a zero or null reading on the indica-
tor. With a null condition, voltage drops across bridge
arms XP and YP are equal and the bridge is said to
be balanced. Thus, the value of unknown Rx can be
determined from the basic relationship: Rx _ Rb, or
Rx = RaRb/Rs. Ra Rs
Parallel Capacitance Cp
(HIGH D: 0.05 to 50 at 1kHz)
Cx = Ct Rb/Ra
_ 1 1
X= 3. fCxRx=2.1CL RC
f = frequency
D
This circuit is similar to the basic R circuit, but note
that capacitor Ct is inserted in parallel with Rc {DQ
control), Rx, in parallel with unknown capacitor Cx,
represents the inherent resistance of any capacitor.
A 1kHz signal replaces the dc voltage used in R meas-
urements. The relationships for this equivalent bridge
circuit are given in B.
series Capacitance Cs
(LOW D: 0.001-9,12at 1 kHz)
Cx = Ct Rb, Ra
Dx = 2rfCx Rx = 2riCtRe
frequency
He
El
In this mode, Ct is in series with Rc (DQ control) and
loss resistance Rx is in series with unknown capaci-
tor Cx.
Parallel Capacitance
Cp AUTO |
Cx = Ct Rb/Ra
This circuit is similar to the circuit of B except that
Re is replaced by Rd. Rd represents avoltage-adjust-
able resistor which electronically adjusts this bridge
arm resistance and eliminates the need for simultan-
eous bridge adjustment with more than one control.
Thus, with the Model 42604, the capacitance measure-
ment can be made quickly with only the CRL control.
Series Inductance Ls
(LOW Q: 0,02 to 20at 1 kHz)
Lx = Ct Ra Rb
WX = 2 xi Lx, Rx = 2rf CtREe
f =irequency
Unknown inductance Lx has aseries resistor Rx which
represents the resistance of the coil windings and loss
of inductor,
Parallel Inductance Lp
(HIGH €): 8~1000at 1kHz)
Lx = Ct Ra Rb
_ Rx 1
OX = 50F1x - I,0CIRC
| = frequency
This circuit is similar tothe series inductance equiv-
alent circuit, except that loss resistance RX is in
parallel with Lx and Ct is in series with Rc (DQ
control).
Series Inductance Ls AUTO
Lx = Ct RaRb
This circuit is similar to E except that Re isTeplaced
by Rd. Rd represents a voltage-adjustable resistor
which electronically adjusts this bridge arm resistance
and eliminates the need for simultaneous bridge ad-
justments with more than one control. Thus, with the
Model 42604, the inductance measurement can be
made quickly with only the CRL control.
4-2
Figure 4-1. Basic Bridge Circuits
02337-2
DO = &
29
17, FUNCTION switch 8102 routes signals to and
#rom various functional circuits in the instrument,
When set to R position, 40 Vde is routed through $102
‘and RANGE switch S101 to the unknown В. For L
measurements, the bridge arm connections to the DQ
‘end CRL controls are reversed from that for C meas-
urements. This technique maintains the same phase
relationship for the bridge error signal and the ref-
erence voltage for the AUTO null circuit, The CRL
direction indicator lights are also energized for Cp
AUTO or Ls AUTO position of the FUNCTION switch.
R110 and R111 are fixed bridge resistors selected by
FUNCTION switch 5102,
4-18. POWER SUPPLY AND 1 kHz
OSCILLATOR A200.
(Schematic Diagram, Figure 8-4)
4-19. Assembly A200 includes four power supply sec-
tions which generate operating dc voltages and also a
1 kHz oscillator circuit. The ~13 Vdc and -12 Vdc
outputs are regulated and the +40 Vde and +110 Vdc
outputs are not, The oscillator circuit generates the
1 kHz signal for driving the instrument bridge circuit
during L or C measurements.
4-20. POWER SUPPLY,
4-21. PRIMARY POWER. As shown in the schematic
of Figure 8-4 , either 115 Vac or 230 Vac is applied
through fuse F1 and LINE switch 81 to T1 primary.
Rear-panel 115/230 switch 82 connects T1 primaries
in parallel for 115 Vac operation or in series for 230
Vac operation.
4-22. +13 VDC SUPPLY. The regulated +13 Vdc sup-
ply consists of full-wave rectifier CR201, CR202 whose
output is smoothed by C201, regulated by Q201, Q202,
Q203, and further filtered by C203. Breakdown diode
CR203 provides a 12.7 volt reference at Q203 emitter.
Output voltage variations are sensed at Q203 base,
amplified, and supplied to driver Q202 base. Q202
thencontrols reguiator Q201 to oppose the output volt-
age change. Resistor R204 across @201 collector-
emitter provides protection for Q201 when the +13 Vdc
output is overloaded.
4-23, -12 YDC SUPPLY, The regulated -12 Vdc
supply consists of half-wave rectifier CR204 whose
output is smoothed by C204, regulated by Q204, and
further filtered by C205, Breakdowndiode CR205 pro-
vides a 12.7 volt reference at Q204 base. When the
output voltage starts to change, this change is sensed
by regulator Q204 which changes its dynamic resis-
tance to oppose the voltage change,
4-24, +40 VDC SUPPLY. The unregulated +40 Vdc
supply consists of half-wave rectifier CR206 whose
output is filtered by the RC combination of R20% and
C208. Series resistor R207 limits the output voltage
to the UNKNOWN terminals during R measurements.
4-25, +110 VDC SUPPLY. The unregulated +110 Vdc
supply consists of half-wave rectifier CR207 whose
output is filtered by C207. This +110 Vdc is supplied
via pin P, FUNCTION switch 8102, and RANGE switch
5101 tothe decimal point and direction indicator neons,
02337-1
Section IV
Paragraphs 4-17 to 4-33
4-26, 1 kHz OSCILLATOR.
4-27. Transistors Q205, Q206, and associated compo-
nents form a 1 kHz oscillator circuit. Emitter fol-
lower Q207 provides the buffered 1 kHz output to
transformer T2 to drive the bridge circuit for Land
C measurements. The oscillator is an RC type with
positive feedback from Q206 collector to Q205 base
to maintain oscillations, Operating frequency is pri-
marily determined by C209, C210, R208, R208, and
R210. Variable resistor R210 permits frequency ad-
justment. R213 is the output level control, Plus 13
Vde is supplied from pinD via OSCILLATOR INT-EXT
switch 83 to pin U. Thus, the oscillator circuit is
energized only when $3 is set to INT, Capacitors
C208 and C214 filter 1 KHz from the +13 Vde line.
4-28. REFERENCE VOLTAGE ASSEMBLY A300.
(Schematic Diagram, Figure 8-5 }
4-29. INTRODUCTION,
4-30. The circuits of assembly A300 receive the 1
kHz signal from bridge transformer T2 and generate
a negative output pulse. The duration of this pulse
is equal to twice the phase angle (0) between the bridge
driving signal from T2 and the 1 kHz signal across
one arm of the bridge circuit. This 26 pulse duration
thus represents a phase relationship in part of the
bridge circuit and is used to detect the error signal
component in phase with the reference voltage of the
phase detector. Detector output drives the voltage-
controlled resistor automatically for bridge balance.
This automatic action occurs when the FUNCTION
switch is set to Cp AUTO or Ls AUTO. The 26 re-
lationship is used because it provides maximum nuli
resolution and stability for the loop circuit,
4-31. REFERENCE PHASE CIRCUITS,
4-32. The reference phase circuits reconstruct the
bridge driving signal from T2 and compose a 1 kHz
square wave which is in phase with this driving source,
This reference square wave is applied to the phase
comparator. The reference phase circuits include
high-impedance amplifier No. 1 {Q305, Q306), dii-
ferential amplifier (Q303, Q304), and limiting amp-
lifier Q3ÛT.
4-33. The 1 kHz signal from T2{4) and switch assem-
bly A100 is applied at A300(9). From pin 9 the signal
is ac coupled through C307 to Q306 base, Q306 and
Q305 amplify the signal current and apply it to dif-
ferential amplifier transistor Q304. Capacitor C305
is selected to provide positive feedback to Q306. This
compensates input capacitance of the amplifier and
stray capacitance of CRL resistor R3, The other in-
put to the differential amplifier is from @301 emitter,
which is the other signal fromthe bridge circuit. Thus
the differentially summed output at Q303 collector is
a reconstructed sine wave in phase with the bridge
driving signal. From Q303 collector, the sine wave
is ac coupled through C309 to Q307 base. Diodes
CR301, CR302 limit peaks, so the output from @307
collector is a squared wave. This squared wave is
ac coupled through C317 to the phase comparator
circuit,
4-3
Section IV
Paragraphs 4-34 to 4-52
4-34. VARIABLE PHASE CIRCUITS.
4-35. The variable phase circuits receive an ac volt-
age from one arm of the bridge circuit and supply a
square wave which is out of phase with the bridge
driving signal at T2. The variable phase circuits
include high-impedance amplifier No. 2 (Q301, Q302)
and limiting amplifiers @308 and Q309.
4-36. The 1 kHz signal from T2{3)} and switch assem-
bly A100 is applied at A300(7), From pin 7 the signal
is ac coupled through C301 to Q301 base. Q301 and
Q302 amplify the signal and supply it to limiter amp-
lifier Q308, (From Q301 emitter, the signal is also
supplied to 303 base in the reference phase circuit.)
Diodes CR303, CR304 limit signal peaks, so Q309 in-
put is a clipped sine wave. Limiting amplifier Q309
and diodes CR305, CR306 further limit peaks, so Q305
output is a square wave. This square wave is the
second input to the phase comparator circuit.
4-37, PHASE COMPARATOR,
4-38. Phase comparator Q310, Q311 receives two
square wave inputs: 1) one from the reference phase
circuits which is in phase with the bridge driving sig-
nal, and 2) a second from the variable phase circuits
which has a phase relationship € with the bridge
driving signal. The phase comparator output at Q311
collector is a negative pulse whose duration is equal
to phase angle éd .
4-39. The phase comparator acts as an AND gate;
that is, when the variable-phase square wave input
at Q310 base is positive-going and the reference
square wave at Q311 base is negative-going, a nega-
tive pulse results at Q311 collector. This negative
pulse is 8 wide; that is, its duration is equal to the
phase difference between the two phase comparator
inputs.
4-40, MILLER INTEGRATOR.
4-41, The Miller integrator circuit receives the
negative pulse from the phase comparator and gener-
ates a positive "A" shaped waveform. The duration
of the "A" shaped pulse is twice that of the input neg-
ative pulse. C318 is the integrating capacitor.
4-42. SWITCH.
4-43. Transistor switch Q313 makes a square wave
from the "A" shaped input pulse. The square wave
output duration is equal to the input pulse duration.
Q313 is normally off. When the input pulse starts,
Q313 saturates and remains on until the input pulse
returns to its base line value. The switched output
is supplied at pin 15 to drive the one-shot multivi-
brator on detector assembly A400,
4-44, DETECTOR ASSEMBLY A400.
(Schematic Diagram, Figure 8-6)
4-45. INTRODUCTION,
4-46. Assembly A400 circuits receive the bridge
unbalance information and the 28 pulse from refer-
ence voltage assembly A300. These inputs are used
to automatically adjust a variable resistance circuit
4-4
Model 4260A
which replaces a resistance in one arm of the bridge
for Cp AUTOor Ls AUTO functions. In addition, these
inputs are used to control the direction indicator lights.
The right or left direction light is on, depending on
which way the CRL control must be rotated to balance
the bridge. Detector circuits include the error sig-
nal amplifier, phase detector, one-shot multivibra-
tor, differential amplifier, Miller integrator, vari-
able resistance circuit, and CRL direction light
control,
4-47. ERROR SIGNAL AMPLIFIER,
4-48. This 80dB amplifier includes transistors Q401
through Q405 and associated components, Input at pin
1 is a 1 kHz sine wave (if internal oscillator is used:
otherwise frequency oi external oscillator) whose amp-
litude represents the amount of bridge unbalance
(error signal), Sine wave outputs from Q404 drive
part of the phase detector and also the meter circuit.
An output from Q405 emitter (phase-shifted 90° lead-
ing) drives that part of the phase detector which con-
trols the direction indicator light circuit. Thus, when
an unknown L or C is connected across the UNKNOWN
terminals, the bridge circuit is unbalanced and an
error signal results, This causes a meter reading, a
direction light to be on, and also controlled value for
the variable resistance.
4-49, The error signal is applied at pin 1 and ampli-
fted by Q401, Q402, and Q403. Diodes CR402 through
CR405 provide limiting at Q402 to obtain logarithmic
amplifier characteristics. Also, when oscillator
switch 53 is set to INT (pins 6 and 7 shorted), nega-
tive feedback occurs from Q404 emitter to Q403 base
through a twin T filter. The T filter provides mini-
mum negative feedback at 1 kHz, which peaks the
amplifier at this frequency and it effectively becomes
a tuned amplifier with overall loop gain maximum,
Breakdown diode CR401 in Q403 emitler establishes
the dc operating point for this transistor. Q404 is an
emitter follower which supplies the amplified error
signal to part of the phase detector, Phase-shifting
network R420 and C412 cause the output voltage wave-
form at Q405 emitter to lead the error signal by 90°.
Diodes CR406 through CR409 are afull-wave rectifier
to provide a de for the meter which is proportional
to bridge unbalance, :
4-50. ONE SHOT MULTIVIBRATOR.
4-51. The one-shot multivibrator (OS MV) receives
the negative pulse via pin 12 from switching amplifier
@313 and generates 1 kHz square waves, Comple-
mentary square waves from both collectors of the OS
MV are applied to phase detector diodes CR412 and
CR413.
4-52. The quiescent state of the OS MY is Q406 ofí,
Q407 on. RC combination C416, C417, R425 differ-
entiates the positive-going trailing edge of the nega-
tive input pulse. The resulting positive pulse at Q406
base turns this transistor on, RC combination R428,
C418 determines how tong the Q407 off, Q406 on con-
dition exists. Diodes CR410, CR411 provide a speed-
up action for the OS MY when it changes states so that
the square wave edges are sharpened,
02337-1
4-63. PHASE DETECTOR.
14-54. The phase detector circuit receives square
“waves from the OS MV and sine wave from the error
X signal amplifier. Avarying dc output results at R43 5,
“R436 junction which is proportional to bridge unbal-
“ance. The phase detector is actually two phase de-
> tecting circuits: one for the variable resistance cir-
© euit, and a second for the CRL direction light control
circuit,
4-55. The error signal sine wave from w404 emitter
ls applied through C411 to CR412, CR413 junction,
The complementary square waves from the 05 MV are
- applied through R433 and R434 to the other ends of
‘these diodes.
When Q406 collector is positive (+4. 4
volts), and Q407 collector is zero, diodes CR412 and
CR413 conduct. Error signal amplifier output voltage
appears at R435, R436 junction without attenuation,
i When Q406 collector voltage is zero and Q407 collec-
ELENA TO кбо
. "o. " r
tor is +4.4 volts, CR412 and CR413 are cut off; error
signal amplifier output voltage does not appear at R435,
R436 and this junction isthe same voltage level asthe
average voltage level of +2.2 volts. The voltage level
at R430, R431 junction is the average level of +2. 2
volts. Thus the differential output between R435, R436
junction and R430, R431 junction is the synchronized
rectified output of the error signal. This output is
supplied to Q408 for proportional control of the vari-
able resistance circuit.
4-56. Operation of the CR414, CR415 light control
section of the phase detector is similar, except that
the error signal sine wave is phase-shifted 90° ahead
by R420, C412, Q405 combination. When the bridge
is unbalanced with the CRL counter too low, an error
signal is applied and the de output to the light control
differential amplifier is more positive, With the CRL
counter toc high, output is less positive.
4-57, DIFFERENTIAL AMPLIFIER AND
MILLER INTEGRATOR.
4-58. This circuit uses the phase detector output to
control the variable resistance circuit, The Miller
integrator provides stability for the overall feedback
loop near null or bridge balance when most sensitivity
is required. The differential amplifier output at Q408
collector is a dc level which changes with the phase
detector input at Q408 base. Integrator circuit Q410
and C420 amplifies Q408 output and stabilizes control
of the variable resistance circuit, Near null or bridge
"balance point, noise and random variations are mini-
mized by the integrator circuit,
4-59. VARIABLE RESISTANCE CIRCUIT,
4-60, The variable resistance circuit includes +6 Yde
regulator 0415, phase splitter 411, and emitter fol-
lowers Q412, Q413, Q414. Diodes CR419, CR420 are
:- the heart of the variable resistance circuit, with their
bias state controlling their resistance. In Cpor Ls
AUTO position, this controlled resistance becomes the
=: В value which replaces the DQ control in one arm of
the bridge (see Block Diagram, Figure 8-2 ).
02337-2
04240 — & - Е
Section IV
Paragraphs 4-53 to 4-63
4-61. Phase splitter Q411 conduction controls CR418,
CR420 bias through emitter followers Q412, Q413, and
414. When Q411 base voltage decreases, current
through R446 and R447 decreases; base voltage levels
of Q412 and Q413 increase, and the forward current
through CR419, CR420 increases, This causes the
effective resistance of the diodes to become smaller.
When Q411 input voltage causes Q411 to be cut off,
current begins to flow through CR416, CR417, and
CR418; base voltage level of Q412 and 0413 cannot
increase. At this time, diodes CR419, CR420 have
the minimum resistance for the bridge arm, When
Q411 base voltage increases, Q411 turns on and Q411
collector to emitter voltage becomes small. Diodes
CR419, CR420 are cut off and their effective resist-
ance becomes several hundred megohms. Thus, the
variable resistance circuit changes its resistance as
controlled by bridge balance information from the
phase detector,
4-62. DIFFERENTIAL AMPLIFIER AND
LAMP DRIVER.
4-63. This circuit uses information from the phase
detector circuit (Paragraph 4-56) to light the cor-
rect CRL direction lamp. Figure 4-2 is a simpli-
iied diagram of the light control circuit. The error
de level at Q416 base is added with the reference level
at Q417 base by the differential amplifier to give a
resulting de level at driver Q418 base. When the CRL
control is set too low for bridge balance, Q416 is
turned on; this causes Q418 to be off with its collec-
tor voltage rising to near -110 volts, and right CRL
light V602 is energized through R456. With the CRL
control too high, Q416 is off, Q418 is on, and left
CRL light Y601 is energized through R457, Q418, and
R455,
+110V
R456 R457 2
240K I80K
2418 mani |
в =
Bb
ul
V602 V60I
в
R455 R458 $
2200 820K <
7
Figure 4-2. CRL Light Control
4-5
Section IV
Paragraphs 4-64 to 4-67
4-64. CHASSIS ASSEMBLY A500.
4-65, Chassis assembly A500 consists of the main
mounting plate (top deck and rear panel) and those
parts that are permanently riveted on it. These parts
are identified as: Jl, ac power input jack; J2, 18-pin
connector for printed circuit assembly A200; J3, 15-
pin connector for printed circuit assembly A300; J4,
15-pin connector for printed circuit assembly A400;
and 52, 115/230 volt ac power slide switch.
Model 4260A
4-66. DECIMAL POINT AND DIRECTION
INDICATOR LAMP A600.
(Schematic Diagram, Figure 8-3 )
4-67, This assembly includes decimal point neons
V603, V604, V605, series resistor R601 and CRL
direction neons V601, V602, Decimal point lights are
controlled by the position of the RANGE and FUNC-
TION switches, CRL direction light control is ex-
plained in Paragraph 4-63,
02337-1
Model 4260A
SECTION V
MAINTENANCE
5-1. INTRODUCTION.
5-2, This section provides maintenance and adjust-
ment information for the Model 42604. The section
contains four areas of information as follows:
a. performance checks are included in Table 5-2
to verify operation of instrument circuits;
b. troubleshooting and repair information is in-
tended to aid systematic troubleshooting and repair;
ce, adjustment procedures are given in the order
recommended for use; these adjustments include
checks of critical components in the bridge circuit
and also selection procedures for factory-selected
components;
d. operation checks of printed circuit assemblies.
5-3. TEST EQUIPMENT.
5-4, Recommended test equipment for periorming
the checks and adjustments outlined in this section
ig listed in tabular form with the procedure tobe per-
formed. Test instruments other than those listed can
be used if their specifications equal or exceed the listed
characteristics.
5-5. INSTRUMENT COVER REMOVAL.
5-6, To remove top or bottom cover, remove two
screws at rear of cover, slide cover toward rear of
instrument, and lift cover off, Slide covers are re-
moved by taking out four screws in each cover and
lifting cover off.
WARNING
115 or 230 volt ac terminals are exposed
when bottom or side covers are removed.
Exercise caution during troubleshooting,
adjustments, or repair. To avoid damage,
disconnect power during adjustment or repair,
5.7. ASSEMBLY IDENTIFICATION,
5-8. Table 4-1 lists the assemblies in the Universal
Bridge. Assemblies are identified by assembly num-
ber: for example, A200,
5-9. PERFORMANCE CHECK.
5.10, Performance checks outlined in Table 5-2 can
be used as an operating check for the instrument.
These checks can also be used:
a, as partof anincominginspection checkof instru-
ment specifications;
b, periodically, for instruments used in systems
where reliability is of utmost importance,
c, as part of a troubleshooting procedure to locate
operation problems, and
d. after any repairs or adjustments, before return-
ing instrument to regular service,
02337-2
Section V
Paragraphs 5-1to 5-10
Table 5-1. Performance Check
Test Equipment
Recommended Unit
Model or
Pari Number
C: 1 uF +0.2%, sil mica
C: 0,1 nF £0,2%, sil mica
C: 0,01 нЕ +0. 2%, в] mica
С; 1009 рЁ +0.2%, air
C: 100 pF +0, 2%, air
C: 10 pF +2,5%, 500 WV, cer
C: 1pF +10%, 500 WY, mica
L: 1 mH +0, 5%
L: 10 mH +0, 2%
L:
100 mH 0, 2%
YHP CS-1
YHP CS-0,1
YHP C5-0, 01
YHP CS-1000À
YHP CS-100A
0160-0483
0150-0029
УНР 51-1
УНР 51-10
УНР 51-100
These resistors can be used for resistance (R)
and dissipation factor (D) checks, One per cent
resistors are used with capacitors for D checks
and 1/2% (or better)are used for resistance checks.
carb flm, 10 M, 1/4% 1W
met flm, 1 M 1/2%, 1/2W
met flm, 99K, 1/2%, 1/2 W
carb flm, 29,9K 1%, 1/2W
carb flim, 15K 1%, 1/2W
met film, 10K 1/2%, 1/4W
ww 7.5K 1/4%, 1/8W
met flm, 5K 1/4%, 1/8W
carb fim, 3K, 1%, 1/2W
ww, 2K, 1/2%, 1/2W
carb flm, 1.5K, 1%, 1/2W
carb flm, 1K, 1/2%, 1/2W
carb flm, 300 &, 1%, 1/2W
met film, 150 Q, 1%, 1/8W
met flm, 100 ©, 1/4%, 1/2W
carb fim, 33 ©, 1%, 1/2W
carb flm, 30 &, 1%, 1/2W
ww, 9 ohms, 1/2%, 1/2W
carb ífim, 7.5 2, 1%, 1/2W
ww, 1.1 2, 1/2%, 1/2W
DC Null Voltmeter
Range: 1 mV to 300 Vrms
Input R: 1 megohm
AC Voltmeter
Range: 1 mV to 10 V
Input Impedance: 1 megohm
Electronic Counter
Sengitivity: 50 mV
Freq: Dc to 100 kHz
Display: 4 digits minimum
0760-0025
0757-0017
0757-0010
0727-0185
0727-0168
0698-4203
0811-0046
0698-3237
0727-0124
0811-0285
0727-0110
0727-0451
0727-0065
0757-0284
0757-1012
0727-0965
0727-0991
0811-0294
0727-0705
0811-0284
HP 413A
HP 403B
HP 52451 with
HP 5261A
Plug-In
Section Y
Table 5-2
Table 5-2, Performance Checks
Model 42604
1, CAPACITANCE MEASUREMENT,
C Range' 1 pf to 1000 uF; C Accuracy: + (1% + 1 digit), 1 nF to 100 uF
D Range: 0,001 to 0.12 for LOW D: 0,05 to 50 for HIGH D
D Accuracy: LOW D --D: + (5% + 0,002) or 1 dial division, whichever is greater
HIGH D --1/D- +(5% + 0, 05) or 1 dial division of LOW Q dial,
whichever is greater,
a. Connect equipment as shown in Figure 5-1,
HP4260A HP 42604
REAR PANEL FRONT PANEL
‚>
STD
CAP
N
Г
S
=
Figure 5-1, Capacitance and D Accuracy Check
b. For this check, locate the following components:
Standard Connect Resistor
C Readings in
Capacitor for Standard D Function C Readings D Readings Cp-AUTO
l ur - Cs 0989 = 1011 nF |less than 0.002 | 0984 - 1016 nF
0.1 uF - Cs 098.8 - 101,1nF (less than 0.002 | 098,4 - 101,6 nF
0.1 uF series 7.5 2 Cs 088.9 - 101.1nF 10.0024 - 0,007 | 098.4 ~- 101.6 nF
0.1 uF series 30 {2 Cs 098.9 - 101.inF |0.0159 - 0.022 | 098.4 - 101.6 nF
0,1 uF series 150 © Cs 098,9 - 101.1nF [0.088 - 0,099 | 097.5 - 100,7 nF
0,1 uF parallel 30K Y Cp 098,9 - 101.1nF (0,056 - 0,05 098.4 - 101,6 nF
0.1 uF parallel 15K ® Cp 056,9 - 101.1nF [0,112 - 0.1 098.4 - 101.6 nF
0,1 uF parallel 3K £2 Cp 098,9 - 101.1nF [0.575 - 0.49 098,4 - 101.6 nF
0.1 uF parallel 1,5 K Cp 098.9 - 101.1nF |1,2 - 0,95 098,4 - 101.6 nF
C.1 uF paraliel 300 £2 Cp 098.8 - 101.1nF |10 - 4 -
0,1 uF parallel 33 © Cp 098,9 - 101.1nF | more than 20 -
0.01 uF - Cs 09,88 - 10.11nF |less than 0.002 | 09.84 - 10.16 nF
1000 pF - Cs 0979 - 1021 pF |less than 0,002 | 0974 - 1026 pF
100 pF - Cs 0097 - 0103 pF*iless than 0.002 | 0097 - 0103 pF*
10 pF - Св 0909 - 0011 pF* - 0009 - 0011 pF*
1 pF - Cs 0000 - 0002 pF* - 0000 - 0002 pF*
*For calibration, subtract residual capacitance from measured value,
c, Set FUNCTION switch to Cp AUTO,
д, Connect 1 uF standard capacitor to UNKNOWN terminals.
e. Set CRL counter to 1000, Set RANGE switch on nF range to light right decimal point light.
02337-2
e A
ode] 4260A Section V
; Table 5-2 -
Table 5-2. Performance Checks (cont'd)
{. Rotate CRL control for meter null at center and observe that CRL. direction lights change at
null position,
a к. Set FUNCTION switch to Cs LOW D and adjust DQ dial for meter null. (Slight adjustment of CRL
* control may give best null,) Read the measured C and D values. These values should be within the
: Walues listed above for the standard capacitors,
h. Repeat the procedure for the other standard capacitors listed and connect resistors as indicated.
2. INDUCTANCE MEASUREMENT L Range: 1 ;Hto 1000 H
L Accuracy: +(1% + 1 digit) from 1 mH to 100 H
a. For this check, locate the following inductors:
Standard Inductor L Readings in Ls-Low Q L Readings in Ls - AUTO
1 mH 0979 - 1021 LH 0974 - 1026 4H
10 mH 09,89 - 10,11 mH 09,84 - 10,16 mH
100 mH 098.9 - 101.1 mH 098.4 - 101.6 mH
Note: Lp: L readings in Lp-High Q should be as follows:
| Lp = Ls (1 + 1/0”)
where Ls = L readings in Ls-Low Q
Q = @ readings in Ls-Low Q or Lp-High Q
ОВ, Set FUNCTION switch to Lis AUTO,
¢. Connect 1 mH standard inductor to UNKNOWN terminals.
d. Set CRL counter to 1000, Set RANGE switch on uH range to light right decimal point light.
e. Rotate CRL control for meter null at center and observe that CRL direction lights change at null
position,
f. Set FUNCTION switch to Lp LOW D or Ls HIGH D and adjust DQ dial for meter null. {Slight
adjustment of CRL control may give best null.) Read the measured L and Q values. These values
should be within the values listed above for the standard inductors.
o, Repeat the procedure for the other standard inductors listed,
3. DC RESISTANCE MEASUREMENT.
Range: 10 milliohms to 10 megohms
Accuracy: +(1% + 1 digit) from 10 ohms to 1 megohm
2 (2% + 1 digit) from 10 millichms to 10 ohms and 1 megohm to 10 megohms
Residual Resistance: approximately 3 milliohms or less
a. Use an external voltmeter such as the HP 413A DC Null Voltmeter for maximum resolution of the
bridge balance point. Remove the shorting strap on the Voltmeter rear panel to isolate the Voltmeter
from power line ground. Connect the Voltmeter low or ground input terminal to the 4260A rear-panel
DETECTOR ground terminal. Connect the other Voltmeter input terminal to the UNKNOWN LOW ter-
minal on the 4260A,
E
b, Set the FUNCTION switch to R.
с, Set RANGE switch full cw,
d. Rotate CRL control to 1000,
e. Connect 10 megohm standard resistor to UNKNOWN terminals,
f. Adjust CRL control for null on voltmeter and increase SENSITIVITY control cw for maximum reso-
lution. Read measured R value from CRL counter and decimal point displayed,
g. Repeat the procedure for the other standard resistors.
-02837-2 5.3
Sectipn V
Table 5-2
Table 5-2. Performance Checks (cont'd)
Model 42604
Resistor,
Resistor,
Re sistor,
Resistor,
Resistor,
Resistor,
Resistor,
Resistor,
Resistor,
Resistor,
Resistor,
h. Remove resistor from UNKNOWN terminals.
terminals. Set RANGE switch full cow,
indication on Voltmeter.
Standard Resistors
10M © + 0, 5% 1/4W, metal film
1M% +0, 5%, 1/4W, metal film
100K © = 0, 5% 2 1/4W, metal film
10K 2 +£0.5%, 1/4W, metal film or WW
7.5K © = 0.5%, 1/4W, metal film or WW
5K 9 10,5% 1/4W, metal film or WW
2K 1 + 0.5%, 1/46, metal film or WW
1K 2 10,5%, 1/4W, metal film or WW
100 © +0,5%, 1/4W, WW
10 2, 0.5%, 1/4W, WW
1%, £0,5%, 1/4W, WW
j» Set FUNCTION to R, RANGE full cew, and rotate CRL to 1030,
With a short, heavy piece of wire, short UNKNOWN
Measure residual resistance by adjusting CRL control for null
Residual resistance should be less than 1 digit,
Model 4260A Readings
09,79 - 10,21 M ©
0989 - 1011 K &2
098,9 - 101,1 K &
09.89 - 10,11 K%
07,42 - 07,58 K ©
04,94 - 05,06 K %
01.97 - 02,03 K 8
0985 - 1011 %2
098.9 - 101.1 ©
08,78 - 10,21%
00,97 - 01,03%
1, To measure the maximum d¢ voltage at the UNKNOWN terminals for R measurements, connect only
a Voltmeter to these terminals,
k, Voltméter should indicate between 30 and 40 Vdc for 115 or 230 volts ac power,
4, INTERNAL OSCILLATOR: Frequency: 1 kHz + 2%
Voltage: 100 mV rms + 20%
ae oT op
Connect equipment as shown in Figure 5-2.
Sel FUNCTION switch to Ls LOW Q position.
Rotate CRL control to 1030,
Rotate DQ control full cow.
e. Read frequency displayed on counter and voltage indicated on voltmeter,
between 980 Hz and 1020 Hz and meter should indicate between 80 and 120 millivolts rms,
+ e LO
IN
Hi
REAR PANEL
HP4260A
FRONT PANEL
na UNKNOWN
HP4038
VOLTMETER
*
* DÓ NOT GROUND TO POWER LINE GROUND
#% USE SHIELDED CABLE AND CONNECT BIAS BAT + TC UNKNOWN CABLE SHIELD
w
HP
5245L /5261A
COUNTER
¥*
Figure 5-2, Internal Oscillator Check
Counter should display
02337-2
О4а НО = А -т
El
wm
>
CITES
x
<
Hewlett-Packard Model 4260A Tests Performed by
—— Date
E
5 strament Serial No. =
PERFORMANCE CHECK TEST CARD
Description Check
1. Capacitance Measurement Accuracy + (1% + 1 digit)
LOWD +(5%+0.002) [ _
HIGHD +(5%+ 0.053 [L — |]
2. Inductance Measurement Accuracy + (1% + 1 digit)[ —____)
3. Dc Resistance Measurement Accuracy 10 ohms to 1 megohm
+ (1% + 1 digit)
Accuracy 10 milliochms ta 10 megohms
+ (2% + 1 digit) Г |
.4, Internal Oscillator Frequency 980 Hz [ jj 1020 Hz
Voltage 80 mV rms [1120 mV rms
02337-1 5-43
EE ACNE
“Model 42604
$ II, TROUBLESHOOTING.
“ 5-12. Thebest approach to isolatingtroubleis tofirst
. ensure that the trouble is not a result of conditions
external tothe 42604; then obtain ail possible inform-
: ation from the controls and indicators and logically
> apply this information to locate the defective unit or
-- component,
Figure 3-1 (Controls and Indicators,
. front panel, Controls and Connectors, rear panel), and
- component location figures and schematic diagrams
: can be used to understand operation and locate parts.
Table 5-3 lists test equipment required for trouble-
… shooting. Table 5-4 (Troubleshooting) lists possible
“ trouble symptoms and checks for their cause.
Table
5-5 shows decimal point and units indication logic,
Troubleshooting of printed circuit assemblies is simp-
lified if a suspected assembly is replaced with an op-
erating assembly. Printed circuit operation checks
i are outlined in Paragraphs 5-39 through 5-51.
0-13, As a general check procedure, the following
questions are a guide for isolating trouble:
a, Are external instruments operating and con-
nected correctly?
b. Is the unknown component connected correctly?
Cc, Are rear-panel shorting straps in place?
5-14, REPAIR.
5-15, COVER AND FRONT PANEL REMOVAL,
5-16. Instrument covers are removed by taking out
screws in eachcover, To remove front panel, remove
all front-panel knobs and side covers, In Figure 5-3
locate the {four screws "A" which hold the side
frames; loosen these screws, Carefully pull iront
panel towards front while holding side frames apart
to release panel. Loosen deck side screws also,
5-17. PRINTED CIRCUIT COMPONENT
REPLACEMENT,
5-18, To replace components on printed circuit
boards, the following procedure is recommended:
a, Clip leads of defective component and remove,
b, With toothpick and soldering iron, clean compo-
nent mounting holes.
e, Insert replacement component leads into holes.
Use heat and solder sparingly and solder leads in
place.
d. Refer to Paragraphs 5-39 through 5-51 for op-
eration checks of printed circuit assemblies,
5.19, CRL COUNTER AND R3 REPLACEMENT,
5-20, CRL COUNTER. To remove this counter, re-
move two screws "Bin Figure 5-3 and lift out counter.
Refer to Paragraph 5-27 (CRL ADJUSTMENTS) be-
fore installing counter.
5-21, CRI RESISTOR R3., For K3 replacement, re-
move CRL knob and four screws '""C" in Figure 5-3.
02337-1
Section V
Paragraphs 5-11 to 5-27
Install replacement R3, Adjustment is required; re-
fer to Paragraph 5-27 {CRL ADJUSTMENTS).
5-22, DQ DIAL AND R5 REPLACEMENT,
5-23. TheDQ dial and resistor R5 are installed as a
calibrated unit and therefore not separately replace-
able. Contact the nearest Hewlett-Packard Sales/
Service Office for service assistance (see lists at the
back of this manual},
5-24, ADJUSTMENTS.
5-25, 1 kHz OSCILLATOR LEVEL & FREQUENCY,
With 4260 A top cover removed, connect oscilloscope
and electronic counter to pin T of J2. Adjust R213
for level between 4.5 and 6.7 volts peak-to-peak, with
positive peak clipped not more than 100 microsec
Adjust frequency withR210 for 995 to 1005 Hz. Repeat
level and frequency adjustments until both are within
these values,
5-26, ERROR SIGNAL PHASE AND GAIN, To check
phase and gain of the error signal amplifier on detec-
tor assembly A400, the test setup of Figure 5-4 is
required.
a. Disconnect the shielded cable from pin 1 of J4,
b, Connect the equipment as shown in Figure 5-4,
с, Bet 42504 LINE switch to ON.
d. Adjust the oscillator output voltage to 1 volt
peak-to-peak on the oscilloscope. Set oscillator fre-
quency £0 1000 Hz, +1 Hz,
e, Alternately adjust R415 and R417 so that ¢scil-
lator output voltage and J4 pin 7 voltage are in phase
and J4 pin T voltage level is between 0.9 and 1. 1 volt
peak-to-peak,
Í, Turnoff 4260A LINE switch and disconnect equip-
ment. Connect shielded cable toJ4 pin I. This comp-
letes the adjustment,
5-27. CRL CQUNTER ADJUSTMENT,
a, Remove power cable from the 4260A to unground
the instrument,
bh. Disconnect shielded cable from CRL resistor R3.
c. Set CRL counter to 0001,
d. Loosen screws "B'' in Figure 5-3 and separate
counter gear from gear train,
a. With a 1% meter or another 4260A with external
null meter, adjust resistance of R3 to be 5. 0 ohms,
f. Set CEL counter to 0001 and engage counter with
gear train.
g. Tighten screws loosened in step d and check to
ensure that CRL control operates gear train easily
without slippage. HM too stiff, loosen screws and
readjust.
h. Connect shielded cable to R3. This completes
the adjustment.
о-5
Section Y
Tables 5-3 and 5-4
Model 42604
Table 5-3, Test Equipment Required for Troubleshooting
Item Descrintion HP Model
De Yoltmeter Range: 1 mV to 300 Vdc 413A
Input R: 1 megohm
Oscillator Frequency: 20 Hz to 20 kHz 200CD
Output Level: 2 volts rms max,
Oscilloscope Vertical Sensitivity: 50 mY/cm 175A with 1780A Horizon-
tal and 1750B Dual Trace
Vert. Ampl, Plug-ins.
Standard Components
See Table 5-1, Performance Check Test Equipment
Table 5-4. Trouble Symptoms and Possible Causes
Symptom Normal Operation Possible Cause Check
No lamps light One of the decimal point indi- Fuse blown Fuse
cator lamps should light when Defective lamps Lamps
the 4260A is turned on, +110V supply Power supply - CR207
Switch contacts 5101, S102
No meter deflection
tor R measurements
Meter should deflect either
right or leit when S102 set
Defective meter circuit
40Y de supply
Meter, CR1, CR2
Power supply - CR206
ments
Cp AUTO, Ls AUTO, Ls or Lp
position,
Error signal amplifier
Switch contacts
Bridge circuit
to R position. Switch contacts 5101, 5102
Bridge circuit R3, R110
No meter deflection | Meter should deflect right 1 kHz oscillator Oscillator - Q205 to
for C & L measure- | when S102 get to Cs, Cp, 207
Amplifier - Q401 to
2405
S101, $102, S3
Cl, R3to RS
Noisy null or no
bridge null obtained
for R measurements
Bridge null should be
obtained when 8102 is set
to R position
Switch contacts
Bridge circuit
5101, $102
R3, R101 to R110
C101 to C105
Noisy null or no
bridge null obtained
for C and L meas-
urements (without
AUTO)
Bridge null should be ob-
tained when 5102 set to Cs,
Cp, Ls or Lp position,
Switch contacts
Bridge circuit
Error signal amplifier
oscillation
High impedance ampli~
fier oscillation
5101, 5102, 53
C1, R3 to R5, R101 to
R109, R111, C101 to
C105
Amplifier - Q401 to
Q405
Amplifier - Q301,Q302,
2305, Q306
Noisy null or no
bridge null obtained
tor C AUTO and L
AUTO measurements
Bridge null should be ob-
tained when £102 set to Cp
AUTO or Ls AUTO position,
Switch contacts
Auto null circuits
5102
Check voltages and
waveforms to determine
faulty circuit
Abnormal operation
on direction indica-
tor, Auto null ob-
tained properly.
Direction indicator light should
shift from left to right or from
right to left in the vicinity of
bridge null.
Switch contacts
Neon lamp driver
Differential amplifier
Phase detector
Error signal amplifier
$103, 53
Q418
Q416, Q417
CR414, CR415
Q405
Digplay out of speci-
fications (not AUTO
measurements)
CRL and DQ readings within
specifications,
Switch contacts
Bridge circuit
Low impedance of high
impedance amplifier
5101, 5102
R3 to R6,R101to R111,
C1 to C4,C101to C105
Amplifier - Q30]1,Q302
Amplifier - @305, Q306
Display in AUTO
measurements out
of specifications
CL readings in AUTO measure-
ments within specifications.
Variable resistance
circuit,
Q411 to Q414, CR416
to CR420, C421, L401
5-6
02337 -1
Model 4260A Section V
Figure 5-3
SEALES PRECISIÓN COMPONENT
DO NOT GAR
[Tiel RE TEL у
E LEA AA PALA AREA
Ha
hs NE] NA A T= FE TT
FE Ft] DLLs]
TEA A a.
el
AT "
a .
E
Ar rta dde
Figure 5-3. Right and Left Side Internal Component Location
5-7
Section Y
Paragraphs 5-28 to 5-30
Model 42804
Table 5-5, Decimal Point and Units Indication Logic
Function |Cs LOW D ¡Cp HIGHD |Cp AUTO R Ls AUTO| Ls LOW | Lp HIGH Q
8102 (cow) {ew)
Range 7 Lt Lat Em
Ши Decimal Lights Units Decimal Lights |Units Decimal Lights Units
1 (cew) OFF OFF ON HF ON OFF OFF § OFF OFF ON iH
2 OFF ON OFF UF OFF ON OFF 2 ON OFF OFF mH
3 ON OFF OFF uF OFF OFF ON a OFF ON OFF mH
4 OFF OFF ON nF ON OFF OFF | ki2 OFF OFF ON mH
9 OFF ON OFF nF OFF ON OFF К ON OFF OFF H
6 ON OFF OFF nr OFF OFF ON KO OFF ON OFF H
7 (cw) OFF OFF ON pr ON OFF OFF | M8 OFF OFF ON H
5-28, DQ DIAL MECHANICAL ZERO,
a, With instrument power off andtop cover removed,
rotate DR control full cew.
b. Loosen two allen drive setscrews on R5 pulley.
с. Rotate DQ control ccw until the black line on the
right off-scale end of DQ dial aligns with red index
line on front panel window. Dual wire-wound resis-
tor R54, B should also be full cew,
5-29, BRIDGE CIRCUIT COMPONENT CHECKS.
5-30. INTRODUCTION. The procedures in Para-
graphs 5-31 through 5-38 outline checks and adjust-
ments for the components in the bridge circuit. These
include fixed 0,2 pF capacitor Cl, compensating
capacitor C305, CRL resistor R3, trimmers C103,
C104, C3, and accuracy of resistors in the RANGE
switch, The test equipment setup 1s shown in Figure
5-5. These checks and adjustments should be per-
d. Tighten two setscrews.
adjustment,
This completes the
formed inthe order listed when a comprehensive over-
all instrument checkout is desired. Test equipment
for these checks is listed in Table 5-6.
Pio
HP200CD
QSCILLATOR
HP4260A
+ ++
—
BN Hp
HP5245L
* / 175 А /1750A
COUNTER — A] OSCILLOSCOPE
TRIG IN
¥ USE SHIELDED CABLE AND CONNECT J4(5) TO CABLE SHIELD
HP200CD 0586:
HPI754 SCOPE:
IKHZ, IV P-P
CHAN A: POLARITY +UP
CHAN B: PQLARITY —UP
TRIGGER: EXT
FUNCTION: CHOPPED
SENS O.2Y/CM
SENS 0.2V/CM
Figure 5-4, Error Signal Amplifier Phase and Gain Test Setup
02337-1
Model 4260A
Section V
Paragraphs 5-31 to 5-33
Table 5-6, Test Equipment for Bridge Circuit Checks.
ITEM DESCRIPTION
1%? MODEL OR PART NO,
Oscillator
Frequency: 20 Hz to 20 kHz 200CD
Output Level: 2 volts rms
Oscilloscope Vertical Sensitivity: 100 uv/cm 140 A with 14004
Diff, Ampl, plug in
Standard C 0.1 microfarad, +0. 1% YHP CS-0,1
Silvered Mica C 0, 01 microfarad, +0.2% YHP CS-0,01
Silvered Mica C
1000 picofarads, +1
YHP C5-1000A
Standard L 1 millihenry, +0,1% General Radio 1482 -E
Resistance Range: 10 ohms to 10K ohms HP 42604
Bridge Accuracy: +17
Resistors fxd, comp, 16 ohms, +5%, 1/2 W 0686-1605
fxd, comp, 16K ohms, +56, 1/4 W 0683-1635
fxd, comp, 33 ohms, +5%, 1/4 W 0683-3305
fxd, comp, 160K ohms, +57, 1/4 W 0683-1645
fxd, comp, 330 ohms, +5, 1/4 W 0683-3315
fxd, comp, 1,6 Meg, +5%, 1/4 W 0683-1655
fxd, comp, 3, 3K ohms, +5, 1/4 W 0683-3325
Met film, 15, 9K ohms, +0. 5%;
use 14K ohms, +0, 25% 0698-3371
and 1.91K ohms, +1% 0698-4631
5-31, C1 CHECK. To check fixed bridge capacitor
C1, connect the instruments as shown in Figure 5-5.
a. Connect a standard 0,1 iF capacitor such asthe
УНР Model Cs-0.1 and a 16 ohm 5% 1/4 watt resistor
(HP #0686-1605) in series across the UNKNOWN
terminals. The guard terminal of the standard capac-
itor should be connected to the rear-panel ground
terminal of the DETECTOR jack.
b. Set FUNCTION switch to Cs LOW D.
c. Set RANGE switch to display XXX. X nF.
d. Set rear-panel INT-EXT switch to EXT and set
oscillator to 1 kHz.
e, Balance the bridee and read the measured C
value. C value should be: standard value +0, 3%; for
example 099, 7 to 100.3 nF.
5-32. C305 SELECTION, Capacitor C305 compen-
sates for amplifier stray input capacity and the capac-
ity of the CRL control. The procedure for selecting
the correct value for C305 is as follows:
a, Connect the test setup as shown in Figure 5-5,
b. Connect a standard capacitor such as the YHP
Model CS-0,1 uFanda 16K chm +5% 1/4 watt resis-
tor in parallel to the UNKNOWN terminals.
c, Set FUNCTION switch to Cp HIGH D,
d. Set RANGE switch for XXX. X nF display.
02337-2
e. Set rear-panei INT-EXT switch to EXT and set
oscillator to 1 kHz.
f. Balance the bridge and read measured C value.
Measured C= , nF.
¢. Disconnect the parallel 16K chms resistor from
the UNKNOWN terminals, Connect a 33 ohms 5% 1/4
watt resistor in parallel with the standard capacitor,
h, Change oscillator frequency to 20 kHz,
i. Balance the bridge and read measured C value.
Measured C=. nF,
j. Calculate the difference between 1kHz value and
20 kHz value (steps f and i). Difference should be
within +0.2 nF. If not within this tolerance, change
value of C305 and repeat.
5-33, CRL RESISTANCE (R31 AT 500 OHMS, For
maximum accuracy during measurements, CRL re-
sistor R3 should introduce no errors. C305 selection
provides high frequency compensation at the high re-
sistance end of R3, The R3 check at 500 ohms is an
additional check to ensure that R3 resistance is
correct,
a. Connect tegt equipment setup as shown in Fig-
b. Connect the 0.01 uF silvered mica capacitor with
a 160K ohms + 5% 1/4 watt resistor in parallel to the
UNKNOWN terminals.
с. Set FUNCTION switch to Cp HIGH LD.
9-8
Section V
Paragraphs 5-34 to 5-36
d, Set RANGE switch for XXX, X nF display.
e. Set INT-EXT switch on rear panel to EXT,
f. Set Oscillator frequency to 1 kHz.
g. Balance the bridge and read the measured C
value, Measured C = e nF.
h. Disconnect parallel 160K resistor and connect a
330 ohm 5% 1/4 watt resistor in parallel with the
standard silvered mica capacitor.
i. Change oscillator frequency to 20 kHz.
j. Balance the bridge and read measured C value.
Measured C=. nF. Capacitance difference
between values obtained in steps g and j should be
within a half digit on the CRL counter.
0-34. C103 CHECK AND ADJUSTMENT. Trimmer
capacitor C103 is inside switch assembly A100. The
adjustment can be done through the access hole in the
switch assembly.
a. Connect test equipment as shown in Figure 5-5.
b. Connect the 0, 01 uF silvered mica capacitor
with a parallel 160K ohms £5% 1/4 watt resistor to
the UNKNOWN terminals.
с, Set FUNCTION switch to Cp HIGH D.
d. Set RANGE switch for XX, XX nF display.
e. Set oscillator INT-EXT switch to EXT. and ad-
Just oscillator frequency to 1 kHz,
Е, Balance the bridge and read measured C value,
Measured C= _ , nF,
g. Disconnect the 160K ohms resistor and connect
a 330 ohms + 5% 1/4 watt resistor in parallel with the
silvered mica capacitor,
h. Change oscillator frequency to 20 kHz.
i. Balance the bridge and read measured C value.
Measured C=. nF. Difference between C
values of steps f and i should be made minimum by
adjusting C103,
j. Adjust C103 slightly and repeat procedure, C103
adjustment is correct when difference between the two
measured C values is minimum,
5-35. C104 CHECK AND ADJUSTMENT. Trimmer
capacitor C104 is inside switch assembly A100, The
adjustment can be done through the access hole in the
switch assembly.
a, Connect test equipment setup as shown in Figure
5-5,
b. Connect the 1000 pF silvered mica capacitor with
a 1.6 megohm i 5% 1/4 watt resistor in parallel to the
UNKNOWN terminals.
5-10
Model 4260A
c. Set FUNCTION switch to Cp HIGH D.
d. Set RANGE switch for XXXX. pF display.
e, Set oscillator INT-EXT switch to EXT. and set
oscillator frequency to 1000 Hz,
f. Balance the bridge and read measured C value.
Measured C= | pF.
g. Disconnect the 1.6 megohm resistor and connect
2 3300 ohm + 5% 1/4 watt resistor in parallel with the
1000 pF capacitor, |
h. Change oscillator frequency to 20 kHz,
i. Balance the bridge and read measured C value.
Measured C = . pF. Difference between C
values for steps f and i should be made minimum by
adjusting C104.
j. Adjust C104 slightly and repeat procedure, Ad-
justment is correct when difference between the two
measured C values is minimum, This completes C104
adjustment.
5-36, C3 ADJUSTMENT. Trimmer capacitor C3 is
adjusted to compensate for transformer T2 capaci-
tance, The procedure is as follows:
a. Connect test equipment setup as shown in Figure
5-5.
b. Connect the 0,01 uF £0, 2% with a parallel 15.9
K ohms +0.5% 1/4 watt resistor to the UNKNOWN
terminals.
c. Set FUNCTION switch to Cp HIGH D.
Я. Set RANGE switch for XX. XX nF display.
e, Set oscillator INT-EXT switch to EXT.
f. Set oscillator frequency to 1000 Hz + 5 Hz.
g. Balance the bridge and read measured D value.
D reading should be 1 +0, 05,
h. Remove ac power from the 42604,
i. Remove shorting strap across Cp Ls DQ RE-
SISTOR terminals on rear panel, With another 4260A
measure the de resistance between the ungrounded
Cp Ls DQ RESISTOR terminal and the white-black lead
end of C1.
|. Adjust DQ control sothat the second 4260A meas-
ures 812 ohms. Disconnect measuring 4260A and
connect shorting strap across CpLs DQ RESISTOR
terminals.
К. Apply ac power to 42604,
1. Without moving DQ control, balance the bridge
by adjusting CRL control and C3. Adjustment 1s cor-
rect when bridge null is obtained.
02337-2
“ Model 4260A
5-37, FIRST RANGE CHECK (FULL CCW). The fol-
. lowing procedure checks 1 ohm resistor R101 inside
the RANGE switch.
a, Connect test setup as shown in Figure 5-5.
— b. Connect a standard 1 mH inductor such as a
General Radio 1482E, The inductor high terminal is
- gomnected tothe unmarked UNKNOWN terminal and the
"inductor low and guard terminals should be connected
to the UNKNOWN LOW terminal. The inductor case
“should be isolated from ground.
e Set FUNCTION switch to Ls LOW ©.
d, Set RANGE switch for XXXX.uH.
- e. Set oscillator INT-EXT switch to EXT and set
“oscillator frequency to 1 kHz.
i. Balance the bridge and read the measured L
„Value, Measured L value= =, pH,
g. Install a 3300hm £5% 1/4 watt resistor in series
between the inductor high terminal and the unmarked
; UNKNOWN.
h, Set oscillator frequency to 20 kHz.
i, Balance the bridge and read measured L value.
Measured L value = . 4H. Inductance differ-
ence between L values obtained in steps f and i should
be within +0005 uH, Y not within 0005,measure the
| resistance between UNKNOWN Low terminal and ter-
| minal 40 (see Page 8-4) as follows:
1) Remove instrument top, bottom, and right side
E covers, Remove two screws in printed circuit
; hold-down cover and lift off.
Section V
Paragraphs 5-37 to 5-38
2} Remove all three printed circuit assemblies.
3) Set FUNCTION switch to Lp LOW ©,
4} Remove shorting strap from BIAS BATTERY
terminals,
5) Measure the dc resistance between UNKNOWN
LOWterminaland terminal 40 (Page 8-4).
If this value is 1 ohm +0. 5%, select C101 for
L difference readings within 0005 as discussed
in step i, If the R value is not 1 ohm +0. 5“,
check contacts of S101 and S102,
6-38. SECOND RANGE CHECK, The following pro-
cedure checks 10 ohm resistor R102 inside RANGE
switch A100,
a. Connect test setup as shown in Figure 5-5,
b. Connect a standard 1 mH inductor such as a Gen-
eral Radio 1482E. The inductor high terminal is con-
nected to the unmarked UNKNOWN terminal and the
inductor low and guard terminals should be connected
to the UNKNOWN LOW terminal, The inductor case
should be isolated from ground,
с. Set FUNCTION switch to Ls LOW Q,
d. Set RANGE switch for XX. XX mH display.
e. Set oscillator INT-EXT switch to EXT and ad-
just oscillator frequency to 1 kHz,
f. Balance the bridge and read the measured L
value, Measured L value =__, mH,
g. Disconnect the standard inductor from the UN-
KNOWN unmarked terminal and connect a 330 ohm 5%
1/4 watt resistor in series,
HP 4260A :
FRONT
PANEL | 9 ER 2
" É we + x
tive
o
LOW
HP
40 A /1400A
OSCILLOSCOPE
He
+ 00 NOT GROUND CABINET
#3 USE SHIELDED CABLE AND CONNECT LOW CABLE SHIELD TO DET GRO
в НР 42 БО А
3 REAR
PANEL
OSC|Z0KHz
HP200CD
OSCILLATOR
>
Figure 5-5. Test Setup for Adjustments
“-09337-1
5-11
Section V
Paragraphs 5-39 to 5-51
h. Set oscillator frequency to 20 kHz,
i, Balance the bridge and read measured L value,
Measured L value = . mH. Inductance dif-
ference between measured L values in steps f and i
should be within half 3 digit. I not within half a digit
on the CRL counter, the measured dc resistance of
R102 should be 10 ohms +0. 5% (see Paragraph 5-37,
step i).
5-39. OPERATION CHECKS OF PRINTED
CIRCUIT ASSEMBLIES.
5-40. The following paragraphs outline operating
checks for printed circuit assemblies A200, A300,
. and A400,
5-41, POWER SUPPLY AND 1 KHZ OSCILLATOR
ASSEMBLY A200.
5-42, POWER SUPPLY.
a. With LINE switch ON, connect de voltmeter to
J2 pin D (test point 1). Voltmeter should indicate be-
tween +12. 0 and +13. 5 Vdc,
Ь. Connect de voltmeter to J2 pin F (test point 2).
Voltmeter should indicate between -11, Ü and -12,5
Vdc.
с. Connect dc voltmeter to J2 pin P (test point 3).
Voltmeter should indicate between +95 and +115 Vde.
5-43, 1 kHz OSCILLATOR.
a, With LINE switch ON, set rear-panel oscillator
switch to INT,
b. Connect oscilloscope to J2 pin T (test point 4),
Voltage level should be between 4.5 and 6,7 volts
peak-to-peak, Waveform is shown in Figure 8-4,
¢. Connect electronic counter toJ2 Pin T. Counted
frequency should be between 995 and 1005 Hz.
0-44. REFERENCE VOLTAGE ASSEMBLY A300,
5-45, Operation checks of this assembly are best
made by waveforms. Test points 5 through 16, Fig-
ure 8-5 , indicate waveforms for these circuitstobe
used with the following procedures. Remove power.
a. Disconnect white-green-blue wire from J 4, pin
10, and connect this wire to terminal 3 of DQ resis-
tor R5A.
b. Set FUNCTION switch to Cp AUTO position,
с, Set RANGE switch to display XXX. X nF.
d. Connect a 100 nF (0.1 uF) +5% capacitor (HP
0170-0001) and a 27K ohm z 5% resistor (0689-2735)
in parallel across the UNKNOWN terminals,
e, Remove detector assembly A400 and install 15-
pin extender board (HP 5060-0049) in A400 jack J4.
Observe correct orientation and insert A400 in ex-
tender board, Connect oscilloscope to test point 19
(R430, R431 junction).
9-12
Model 4200 A
f. Apply power to 4260A and adjust CRL and DQ
controls for minimum amplitude of waveform at test
point 19 (bridge balanced), CRL counter should read
between 095, 0 nF and 105. 0 nF and D reading should
be between 0, 053 and 0. 065 on HIGH D scale.
g. With the bridge balanced, the waveforms of Fig-
ure 8-5 for test points 5 through 16 should now result,
Turn power off and remove reference voltage assem-
bly A300 from J3 and install a 15-pin extender board
in J3, Observe correct orientation and insert A300
in 15-pin extender.
h. Apply power, connect oscilloscope to test points
2 through 156 and compare each waveform with those
shown in Figure 8-5,
5-46, DETECTOR ASSEMBLY A400,
5-47. Conditions for observing waveforms at test
points on A400 are the same as outlined in Paragraph
5-45, steps a through f.
5-48, PHASE DETECTOR CIRCUIT, Waveforms
shown in Figure 8-6 for test points 17 and 18 indicate
normal operation. The difference between de voltages
at test points 15 and 20, or 1% and 21 is less than 10
millivolts. These voltages must be measured using a
de voltmeter with an input impedance greater than 10 ,
megohms,
5-49. ERROR SIGNAL AMPLIFIER CIRCUIT, Wave-
forms for test points 22 and 23 are shown in Figure
8-6. The changes at these test points when the CRL
control is increased or decreased 0.2% from bridge
balance point are shown as 22a,b and 23a,b. These
waveforms indicate that error signal amplifier gain
ls normal and phase relationship is correct.
5-50, VARIABLE RESISTANCE CIRCUIT, Connect
resistance network as shown in Figure 5-6. Devolt-
age at test point 24 should be between +5. 3 and +6. 1
volts. Dc voltage or waveform changes at test points
25 through 30 are shown in Figure 8-6 for aCRL con-
trol change + of +0, 2% or -0.2% from bridge balance
point.
5-51. NEON LAMP DRIVER. Dc voltage changes at
test points 32 and 33 are shown in Figure 8-6 for a
CRL control change of +0. 2% or -0,2% from bridge
balance point.
TO J2(T)
"OKO 5% 12 W
a
TO J4 (10)
o
SION 5% 1/2W
TO J4(5)
Figure 5-6, Resistance Network for Checks
02337-1
Model 4260A Section V
Figure 5-7
ALA
= ata DO
#4 NS au
R5A R5B
Figure 5-7. Top and Bottom Internal Component Location
02337-2 5-13/5-14
DAzÉb_A—12
Сдано - йё = 13
Model 4260A
. Section YI
Paragraphs 6-1 to 6-6
Se
SECTION VI
REPLACEABLE PARTS
6-1. INTRODUCTION.
6-2. This section contains information for ordering
replacement parts. Table 6-1 lists parts in alpha-
numerical order of their reference designators and
indicates the descriptionand HF stock number of each
part, together with any applicable notes. Table 6-2
lists parts in alpha-numerical order of their HP stock
number and provides the following information on
6-3. Miscellaneous parts are listed at the end of
Table 6-1,
6-4. ORDERING INFORMATION.
8-5. To obtain replacement parts, address order or
inquiry to your local Hewlett-Packard Field Office
(see lista at rear of this manual for addresses).
Identify parts by their Hewlett-Packard stock numbers.
each part,
a. Description of the part (see list of abbreviations
below).
b. Typical manufacturer of the part in a five-digit
code; see list of manufacturers in Table 6-3.
¢. Manufacturer's part number.
d. Total quantity used in the instrument (TQ column).
A = gAsembly E ‘= misc electronic part Р = plug Y = 78Ccuum, tube, neon
B = motor т = {Табе G} = transistor hulk», photocell, ete,
BT = battery FL = filter R = resistor YE = voltage regulator
Ç = capacitor J = jack RT = thermistor Ww = pable
CP = COUpPler K = relay 5 = awiteh X = pocket
CR = diode L = inductor T = transformer Y = crystal
DL = delay line M = meter TB = terminal board
Ds = device signaling Hamp) MP “= mechanical part TP = test point
ABBREVIATIONS
A = amperes H = henries NPN = negative-positive- RMS roct-mean aquare
A.F.C. = automatic fraquency control HEX = hexagonal negative RWY = reverse working
AMPL = amplifier HG = mercury NRFR = recommended for voltage
B.F.O, = beat frequency oscillator HR = hours) NSR - aa ent S-B = alow-blow
BE CU = borylilura copper IF = Intermediate freq raplaceghle SCR = acrew
BH = binder head IMPG = impregnated °P BE = selenium
BP = bandpass INCD = incandescent SECT = wpction(s)
BRE = brase INCL = include(s) OBD = order by description SEMICON = semiconductor
EWC = backward wave cacilator INS = insulationted) OH = oval head SI = silicon
INT « internal ох = oxide or = aer
CCW = pountar-clockwise = @lida
CER = caramic K = kilo = 1000 PG = Spring
CMO = gabinst mount only LH = left hand P = peak SPL = special
COEF = coefficient LIN = linear taper PO = printed circuit _, a SET = stainless steel
COM = common LK WASH = look washer PF = = 10 SA = ampli ring
COMP = composition LOG = lpgarithmic taper farade STL = gles]
COMPL = complete LPF = low pass filter PH BRZ = phosphor bronze TA = fantalum
CONN = connactor M = milli = {0-3 PHL, = Phillips TD = Hme delay
CF = cadmium plats MEG = Meg = 108 РТУ = peak inverse voltage TEL = toggle
CRT = cathode-ray tube MET FLM = metal film PHP = positive-negative- THD = thread
CW = clockwisg MET OX = metallic oxide pio = a TI = titanium
DEFC = depoaited carbon MFR = manviacturer POLY я lystyrene TOL = tolerance
DR = drive MINAT = mintature PORC = porcelain TRIM = trimmer tube
ELECT = electrolytic monta POS = position(s) veling way
ENCAP = ancapeuliated MY = "mylar" POT = potentiometer U = micro= 10-6
EXT = external PF = peak-to-peak
F = farads N = nano (10-9) PT = point VAR = variable |
FH = flat head N/C = normally closed PWY = peak working voltage УДС = de working volta
FILE = fillister head NE = néon w/ = with
FED = fixed NI PL = nickel plate RECT = rectifier w = Watts
N/O = normally open RF = rulo irequency WIV = working inveras
GE = germanium NPO = negative positive zero RH = round head cr voltage
GL = glas {zaro temperatura right hand ww = wirewound
GRD = ground(ed) coafficiant) HMO = rack mount only w/0 = without
01194-12
02337-1 6-1
6-6,
a, Instrument model number,
b. Instrument serial number.
¢. Description of the part,
d, Function and location of the part.
REFERENCE DESIGNATORS
To obtain a part that is not listed, include:
Section VI
Model 42504
Figure 6-1
ITEM NO. DESCRIPTION HP STOCK NO, QTY
1 Front Panel 04260-1040 1
2 Rear Panel W/deck 04260-7025 1
3 - Side Cover 5000-0703 2
4 Side Frame 5060-0703 2
5 Top Cover 5060-0718 1
6 Bottom Cover 5000-0717 ]
7 Hinge 5040-0700 2
8 Tilt Stand 1490-0032 1
9 Foot Assembly 5060-0728 2
Figure 6-1. Modular Cabinet Parts
6-2
02337-2
О42 Бен А-а
Model 4260A Section YI
Table 6-1
Table 6-1, Reference Designation Index
Desienation dp Stock No, Description # Note
A100 Q4260-7021 ASSY1RANGE AND FUNCTION SWITCH
C101 0160=1548 CtFXD MY 6.22 UF 10% 100vDCW
FACTORY SELECTED PARTITYPICAL VALUE GIVEN
C102 0160-116} CIFXD PAPER 2000 PF 10% 400QVDCw
FACTORY SELECTED PARTITYFICAL VALUE GIVEN
103 0121-0039 CIVAR CER B-50PF 350VOCW
FACTORY SELECTED PARTSTYPICAL VALUE GIVEN
C104 0121=0039 CIVAR CER 6-50PF 3I50VOCW
C108 0160-1045 CIFXO CER 4 PF/0425 FF SOOWVDCW
FACTORY SELECTED PARTITYPICAL VALUE GIVEN
R101 04260-8604 RIFXO WW 0,986 OHM 0,3%
FACTORY SELECTED PARTITYPICAL VALUE GIVEN
R102 94255-8604 RIFXD Ww 10 OHM 0,1%
R103 0698-1381 RIFXO NET FLM 100 OHM 0. 1% Y
R104 0698-1380 RIFXO MET FLM 1K OHM O, 1/2%
R105 0698-1268 RIFXD MET FLM 10K CRM 0.1% 1/24
R106 0698-1376 RIFXO MET FLM 97K OHM 0.1% 1/44
R107 0698=1375 RIFXO MET FLM 3K OHM 1% L/4UMW
R108 0698=1377 RIFXO MET FLM 970K OHM 0,1% 1/44
RL99 0698-1374 RIFXD MET FLM 30K OMM 1% 1146
R110 0698-1400 REFXD WET FLM 500 OHM 0,1% 1/24
R111 0698-4142 RIFXD WET FLM 15,8 OHM 1% 1/4W
5101 Quz60-7021 SUITCHIROTARY FOR RANGE +» FUNCTION
5102 | PART OF 5101
A200 08260-8702 ASSY 1POWER SUPPLY AND 1KHZ OSC
C201 0180-0967 CIFXO ELECT 500 UF 25VDCW
6202 0180-0756 CIFXD ELECT 20 UF 15YDCW
C203 0180-0756 CIFXO ELECT 20 UF 15YDCW
C204 0160-0965 CIFXO ELECT 200 UF 25VDCW
C205 0180-0756 CIFXD ELECT 20 UF 15VDCW
C206 0180-0964 CIFXO ELECT 100 UF SOVDCW
C207 0180-0981 CIFXD ELECT 22 UF ISOVYDCW
C208 0180-1029 C1FXD TANT 1 UF 20% 15VDCW
C209 0166-1544 CIFXAD MY 4700 PF 5% SOVOCW
c210 0160-1504 CIFXO MY 4700 PF 5% 5SOYDCW
c211 0180-1026 CIFXO TANT 47 UF 20% 6VOCY
c212 0180-1029 CIFXD TANT 1 UF 20% 15VDCW
C213 0160-0756 CIFXO ELECT 20 UF 15VDCW
c214 0180-0756 C:FXb ELECT 20 UF 15VDCW
CRZO1 1901-0045 SEMICON DEVICEIDIODE SILICON
cR202 1904-0045 SEMICON DEVICEIDIODE SILICON
CR203 1902-0031 DIQCE BREAKDOWN 12.7V 5% 400 MW
CR204 1901-0045 SEMICON DEVICESDIODE SILICON
CRZOS 1902=0031 DIODE «BREAKDOWN 12.7V 5% 400 MW
CR206 1901-0026 DIODEISILICON 200 PIV 0,5 AMP
CR207 1901-0028 DIODEISILICON 400 PIV 0.5 AMP
6201 1654-0003 TRANSISTORINPN SILICON
1205-0033 HEAT DISSIPATOR FOR Q201
+ See list of abbreviations in introduction to this section
02337-2 6-3
Section VI Model 42604
Table 6-1
Table 6-1, Reference Designation Index (Cont'd)
Designation dp Stock No. Description # Note
9202 1854-0071 TRANSISTORSISILICON NPN 2N3391
Q203 1854=C071 TRANSISTORISTLICON NEN 2N3391
e204 1854-0071 TRANSISTORESILICON NFN 2N3391
4205 1854-0071 TRANSISTORISILICÓN NPEN 2N3391
0206 1854-0071 TRANSISTOR ISILICON NPN 2N3391
4207 1854=0071 TRANSISTORISILICON NPN 2N3391
R201 DeBU=-2T721 RIFXO COMP 2700 CEM 10% 1/0W
ReD2 DHRU=-2T2] RIFXD COMP 2700 OHM 10% 1/4W
R203 CéB4-=-é821 RIFXO COMP 6800 OM 10% 1/4W
R204 dEBI6815 RIFXD COMP 680 OHM 5% 1/04
R205 Qé84-4721 REFXO COMP 4700 OHM 10% 1/4W
R206 DEB 27231 RIFXD COMP Z2K OM 10% L/UMW
R207 090-1821 RIFXO COMP 1800 OHM 10% 1W
R208 0757-0960 RIEXD MET FILM 33K OHM 2% 178k
R209 0757-0954 RIFXD MET FLM 30K CHM 2% 1/54
R210 2109-1776 RIVAR WW 10K OHM 108 LIN 1/2W
Rell 0757-0971 RIFXC MET FLM 5.1K QHM 2% 178%
Relz2 0757-0926 RIFXO MET FLM L.zK OHM 2% 1/86
R213 2100-1777 RIVAR WW 20K OHM 10% LIN 1/2W
R21 u 0624-2741 RIFXC COMP 270K OHM 10% 174%
R215 0757-0930 RIFXD MET FLM 1.8K OHM 2% 1/88
Rel& 0684-4831 RIFXD COMP £BK OHM 10% 1/44
R217 683-2025 RIFXD COMP 2000 OHM 5% 1/44
R218 Qep3=5435 RIFXD COMP 56X CAM 5% 1/4W
R219 Oé83=1235 RIFXO COMP 12X CAM 5% L/UM
R220 683-8215 RIFXO COMP EZO CAM 5% 1/4W
A300 04260-8703 ASSYtREFERENCE VOLTAGE
Col 0180-0962 CIFXO TANT 1 UF 20% 3ISVDCW
C302 0180-0773 CIFXO ELECT 50 UF 15VDCW
C303 0150-1026 CIEFXO TANT 47 LF 20% 6VOCW
C304 0160-1271 CIFADQD MY 0.01 UF 5% SOYOCW
C305 0160-1039 CIFXD CER 25 PF 10% SOOVDCW
FACTORY SELECTED PART; TYP | CAL VALUE GIVEN
L306 OLBO-1026 CIFXD TANT 47 UF 20% &VDCW
{307 0180-0978 CIFXD TANT 1 UF +75-15% SOVDCW
C308 0180-0775 CIFXO ELECT 450 UF 15VDC#
C309 0180-1029 CIFXD TANT 1 UF 20% 15VDCW
£310 0160-1029 CIFXO TANT 1 UF 20% 15VDCW
C311 0186-0945 C3sFAD ELECT 50 UF 6VDCW
(312 0180-1029 CIFXD TANT 1 UF 20% LSVDCW
C313 ©1980-1029 CIFXO TANT 1 UF 20% 15VDCW
C314 0lB0=0945 CIFXD ELECT 50 UF &VDCW
C315 0180-1029 CIFXD TANY 1 UF 20% 1%VDCW
C316 0180-1029 C3FXD TANT 1 UF 20% 15YOCW
C317 0180=1029 CIFXD TANT 1 UF 20% 15VDCW
6318 0160-1543 CtFXD MY 2200 PF 3% S0VDCW
(319 0180-0945 C:FXD ELECT 50 UF &VDCW
CR301 1901-6040 DIODEISILICON 30 MA AT 1V 30 PIV
CR392 1901-0040 DIODEISILICON 30 MA AT 1v 30 PIV
# Ses list of abbreviations in introduction to this section
6-4 02337-2
Model 4260A Section VI
Table 8-1
Table 6-1, Reference Designation Index (Cont'd)
Designation $ Stock No, Description # Note
CR303 1501-0040 DIQDEtSILICON 30 МА АТ 1\ 30 PIV
CARAIOL 1901-0040 CICOE'SILICON 30 MA AT 1V 30 PIV
CR305 1901-0080 DICDEISILICCON 30 MA AT 1v 30 PIV
CR306 1991-0040 DIODEtSILICÓN 30 MA AT 1V 30 Р1У
CR307 1510-0016 DIODEIGERMANIUM 100MA AT O,65V SOPIY
CR308 1910-0016 DIODETFTGERMANLUM 100MA AT O,85V 6OPIY
0301 1854-0071 TRANSISTORSSILICON NPN 2N3391
e302 1853-0010 TRANSISTORISILICON PNP
0303 1854-0071 TRANSISTOR1SILICON NPN 2N3391
Q3OQU 1854-0071 TRANSISTORISILICON NPN 2N33591
0305 1853-0010 TRANSISTORISILICON PNP
0306 1854-0071 TRANSISTORISILICON NPN 2N3391
307 1654-0071 TRANSISTORISIL ICON NPN 2N339$1
2308 1854-0071 TRANSISTORISILICON NPN 2N3391
4309 1854=0071 TRANSISTORISILICON NFN 2N3391
Q310 1954-0071 TRANSISTOR1SILICON NPN 2N3391
311 1854=0071 TRANSISTORISILICON NPN 2N3361
2312 1854=0071 TRANSTISTORISILICON NPN 283391
313 1854-0071 TRANSISTORISILICON NFN 2N3391
R30} 0684-1231 RIFXO COMP 12K OHM lO% 1/44
R302 0623-7515 RIFXO COMP 750 OHM 53 1/4W
R303 0757-0968 RIFXD MET FLM 68K CHM 28 1/64
R304 0684-4731 RIFXO COMP 47K OHM 10% 1/0W
ROS 0757-0951 RIiFXD MET FLM 13K OHM 2% 1/64
R306 0683-5625 RIFXO COMP 5600 OHM 5% 1/4W
R307 0683-1225 RIFXO COMP 1200 OMM 5% 1/4W
R308 Q0683=5625 RIFXD COMP 5600 OMM 5% 1/44
R309 0623-2015 RIFXO COMP ZOK OHM 5% 174%
R310 0757-0926 REFXO MET FLM 1.5K OHM 2% 1/8W
R311 0757-0926 RIFXO MET FLM 1.5K OHM 2% 1/8W
R312 0683-5135 RIFXD COMP 51K OHM 5% 1/44
R313 0757=0926 RIFXO MET FLM 1.2K OHM 2% 1/8W%W
R314 0683-5425 RIFXD COMP 5600 OHM 5% 1/4W
R315 0757-0926 RIFXO MET FLM 1:.2K OHM 2% L/BW
R316 0684-4731 RIFXO COMP 47K OHM 10% 1/44
R317 0757-0951 REFXOÓ MET FLM 13K OHM 2% 1/84
R318 0482-7515 RIFXD COMP 750 OMM 5% L/uW
R319 0757-0968 RIFXO MET FLM 68K OHM 2% 1/88
R320 Qéa4=1231 RIFXD COMP 12K OHM 10% 1/54
R321 JEBU- 22531 RIFXO COMP 22K OHM 10% 1,06
R322 0684-6821 RIFXO COMP &800 OHM 10% 1/4W
R323 Qégu=-6821 RIFXG COMP 6800 OHM 10% 1/4
R324 0684-2721 RIFXO COMP 2700 OHM 10% 1/4W
R325 DéB4-B221 RIFXO COMP B200 OHM 10% 1/40W
R326 0684-1031 RIFXD COMP 10K ORM 10% 1L/UW
R327 Qégil=152] RIFXD COMP 1500 OHM 10% 1/4W
R32B 0684-2741 RIFXD COMP 270K OHM 10% 1/4M
R329 O6BU-6821 RIFXD COMP £800 OHM 10% 1/44
R330 0684-2721 RIFXD COMP 2700 OHM 10% 1/4W
R331 0684-5621 RIFXO COMP 5,5K OHM 10% 1/4W
# See list of abbreviations In Introduction to this section
02337-1 6-5
Section VI Model 4260A
Table 6-1
Table 6-1, Reference Designation Index (Cont'd)
НЕО ® Stock No, Description # Note
R332 0683-1225 RIFXD COMP 1200 OHM 5% 1/44
R333 Q684=4721 RIFXD COMP 4700 OHM 10% 1/4W
R334 0683-5625 RIFXO COMP 5600 OHM SE L/UW
R335 0&8 33-8225 RIFAD COMP E200 ORM SM 1,/4W
R336 0683-6825 REFXO COMP £800 OMM 5% 1/46
R337 0664-4721 RIFXD COMP 4700 OHM 10% 1/48
R338 0683-3025 RIFXD COMP 3000 OHM 5% 1/44
R339 0683=3625 RIFXD COMP 3600 OHM 5% 1/4W
RIGO 0683-2425 RIFXD COMP 2400 OHM 5% 1/4W
R341 0683-1335 REFXO COMP 13K OHM 5% L/UW
R342 0685-12355 RIFXD COMP 12K OHM 5% l/74W
R343 0683-3015 RIFXD COMP 300 OHM 5% 1/4ÿ
Rad 4 0683-5535 RIFXO COMP 56K OHM 5% 1/48W
RIGE O684=4721 RIFXD COMP 4700 ObM 10% 1/4W
ALOO 04260-7024 ASSYIDETEC TOR
C401 0180-0708 CIFXD ELECT 3 UF 15VDCW
C402 O160=1271 CIFXD MY 8.01 UF 5% SOVDCW
cuos 0160-1542 CIFXO MY 1500 PF 10% SOVOCW
C4Q4 0180-1032 CIFXO TANT 10 UF 20% 15YDCW
(4053 0160-1271 CIFXO MY ©.01 UF 5% SOVDCW
cuos 0160-1545 CIFXD MY 0.022 UF 5% SOVDCH
cuo7 0160-1271 CIFXO MY 6.01 UF 5% SOVDCW
C408 0180=1029 CIFXD TANT 1 UF 20% 15VDCW
CUO» 0180-0756 CtFXD ELECT 20 UF 15VDCYW
Cuil 0180-0756 CIFXD ELECT 20 UF 15VDCW
C411 Q180=0756 CIFXD ÉLECT 20 UF 15YOCW
CH12 D160-1271 CTFXD My 0.01 UF 5% SOVDCW
Cull 180-0756 CIFXD ELEGT 20 UF 15VDCW
Cull 0180-0756 CtFXD ELECT 20 UF 15VDCW
cuis 0180-0756 CtFXD ELECT 20 UF 15V6CW
Cuis 0140-0204 CIFXO MICA 47PF 58 NPO 5OOVDCW
cuL7 0140-0194 CIFXD MICA 110 PF 5% 300 VDCW
cuis 0160-1544 CIFXD MY #700 PF 5% SOVDCW
сео 0180-0945 CIFXD ELECT 50 UF &YDCW
c420 0180-1032 CIFXD TANT 10 UF 20% L3VDCW
с42 0180-0966 CIFXO TANT 220 UB 10% 1OVECH
cua 0180-1025 CIFXO TANT 22 UF 208 6VDCH
CRUOL 1902=0037 SEMICON DEVICEIDIODE
CR4O2 1901-0040 DIODESSILICON 30 MA AT LV 30 PIV
CR4OD 1901-0080 DIQDESSILICON 30 MA AT 1Y 30 PIV
CAROL 1901=0040 DICDEtSILICON 30 MA AT 1\ 30 РТУ
CRUOS 1901-0040 DIQDEISILICON 30 МА АТ 1\ 30 PIV
CRYÖR 1910=0016 DIODEIGERMANIUM 1QOMA AT 0,85V 60PIV
CR407 1910-0016 DIODE!GERMANIUM 100MA AT 0.85V 60PIV
CRUE 1910-00 16 OIQDEIGERMANIUM LOOMA AT 0,85V sSOPLY
CROOS 1910-0016 CICDESGERMAMIUM 100МА АТ 0.85VY БОРТУ
CRULO 1910-0016 DICOETGERMANIUM 100MA AT 0,85V БОРТУ
САа1 1910-0016 DIODE GERMANIUM 100MA AT 0.85V 6OPIY
CRU12 1510-0016 DIQDE GERMANIUM 100MA AT Q.85y БОРТУ
# See list of abbreviations in introduction to this section
02337-1
Model 4260A Section YI
Table 6-1
Table 6-1, Reference Designation Index (Cont'd)
Ref
Ssignation & Stock No. Description # Note
CANIS 1910-0016 DIODEIGERMANIUM 100MA AT 0.,85V 60PIV
CRULU 1910-0016 DIODE!IGERMANLUM i¿Q0MA AT 0,85V GOPIY
CRULS 1910-0016 DIODE $GERMANIUM LOOMA AT 0,85V EOPIV
CRY LE 1901-0040 DIODEtSILICON 30 MA AT 1V 30 PIV
CRé17 1901-0640 DIODEISILICON 30 MA AT 1V JO PIV
CR418 1901=0040 DICDEISILICON 30 MA AT 1V 30 PIV
CRULO 1901-0040 DIODEtSILICON 30 MA AT 1v 30 PIV
CRUZO 1901-0040 DIODEISILICON 30 MA AT Lv 30 PIV
CR421 1502-0057 SEMICON DEVICE (DIODE SILICON
L401 9100-0729 INDUCTORIFXC 100 UH 10%
QUOT 1854-0071 TRANSISTORISILICON NPN 2N3391
$402 1853-0010 TRANSISTORISILICON PNP
ques 1854-0071 TRANSISTORISILICON NPN 2N3391
Quod 1854=0071 TRANSISTORISIL ICON NPN 2N3391
9405 1854-0071 TRANSISTORISILICON NPN 2N3391
@406 1654-0071 TRANSISTORESILICÓON NPN 282391
©4607 1854-0071 TRANSISTORISILICON NPN 2N3391
Quoa 1954=0071 TRANSISTORISILICON NPN 2N3391
QUO 1854-0071 TRANSISTOR :SILICON NPN 2N5391
9410 1854-0071 TRANSISTOR:SILICON NPN 2N3391
Qui! ` 1654-0071 TRANSISTORISILICON NPN 2N33%1
Q412 1854-0071 TRANSISTOR+SILICON NPN 2N3391
Qui 1854-0071 TRANSISTORISILICON NPN 2N3391
0414 1854-0071 TRANS ISTORISILICON NPN 283391
QULS 1954-0003 TRANSISTORINPN SILICON
qULO 1854=0071 TRANSISTORISILICON NPN 2N3391
0417 1854-0071 TRANSISTORISILICON NPN 2N3391
QUIE 1854-0022 TRANSISTORINPN SILICON
R401 0683-1855 RIFXO COMP 1.8 MEGOHM SNS 1/4W
RUOZ 0683-2735 RIFXD COMP 27K OHM Sk 1/48
R#03 0643=1235 RAFXD COMP 12K OHM 5% L/4W
R404 0693-4715 RIFXD COMP 470 CHM S% L/UN
Ru05 0624-2231 RIFXD COMP 22K OMM 10% 1/4W
RUO6 0684-1041 RIFXD COMP 100K OMM 10% 1/4W
R407 0684-8221 RIFXD COMP 6200 OHM 10% 1/4W
R40B 0684-1531 RIFXD COMP 15K OHM 10% 1/4W
RUOS 0683-1045 RIFXD COMP 100K OHM 5% 1/44
RUIO 0683-3045 RIFXD COMP 300K OHM 5% 1/4W
R41} Géat=1031 RIFXD COMP 10K OHM 10% 1/08
RUIZ 0684-8221 RIFXD COMM 86200 CHM 10% 1/4W
RULS 0757-0952 RIFXD MET FLM 15K CHM 28 1/6
RULY 0757-0955 RIEXD MET FLM 20K OHM 2% 1/8W
RULS 0683-5535 O COMP 56K CHM 5% 1/44
FACTORY SELECTED PART:TYP ICAL YALUE GIVEN
Ruié 0757-6947 RIFXD MET FLM 9.1K OHM 2% 1/8W
R447 0683-1045 RIFXD COMP 100K OHM 5% 1/44
FACTORY SELECTED PARTITYPICAL VALUE GIVEN
R418 0683-2715 RIFXU COMP 270 OHM 5% 1/4W
R419 0683-3315 RIFXD COMP 330 CHM 5% 1/44
# See list of abbreviations in Introduction to this section
02337-1 6-7
Section VI Model 4260A
Table 6-1
Table 6-1, Reference Designation Index (Cont'd)
E
Dost gration Y Stock No, Description 4 Note
R420 0757-0953 RIFXD MET ELM 16K OHM 28 1/88
R421 0683-1225 RIFXD COMP 1200 OHM 5% 1/U4
R423 0683-1225 RIFXO COMP 1200 OHM 5% 1/44
R423 0684=2721 RIFXD COMP 2700 OHM 10% 1/4W
R424 0684-2741 RIFXD COMP 270K OHM 10% 1/4W
RUZ 0684-1041 RIFXO COMP 100K OHM 10% 1/4W
RUZ6 0757-0947 RIFXO MET FLM 9.1K OHM 2% 1/84
R427 0757-0947 RIFXD MET FLM $.1K OHM 29% 1/8W
RUZA 0683-3645 RIFXD COMP 380K OMM 5% 1/4W
R429 0683-2745 RIFXO COMP 270K OMM 5% 1/4W
RUSO 0757-0935 RAIFXO MET FLM 3.8K OHM 2% 1/86
R431 0757-6935 RIFXO MET FLM 3.0K OHM 2% 1/84
RUIZ 0684-1521 RIFXD COMP 1500 OHM 10% 1/54
R433 0757-0960 RIFXD MET FLM 33K OHM 2% 1/64
434 0757-0960 RIEXO MET FLM 33K CHM 28 1/64
Ru 3% 0757-0939 RIFXD MET FLM 4.3K OHM 23 1/8
R436 0757-0935 RIFXO MET FLM 4.3K OHM 2% 1/6W
R437 0684-1521 RIFXD COMP 1500 OHM 10% 1/4W
R438 0757-0960 RIFXD MET FLM 33K OHM 28 1/8
R439 0757-0960 RIFXO MET FLM 33K OHM 2% L/BW
R440 0757-8939 RIFXD MET FLM 4.3K OHM 2% 1/8
RUY L 0757-0939 RIFXO MET FLM 4.3K CHM 28 1/88
RUNZ 0684-1041 RIFXD COMP LOOK OHM 10% 1/4W *
RU4Y 0683-6835 RIFXD COMP eaK OMM 58 1/44
RUYY 0684-6821 RIFXD COMP 6800 OHM 10% 1/04
RUGS 0684-1041 RIFXD COMP 100K OHM 10% 1/4M
Rue 0683-6215 RIFXD COMP 620 CHM 54 1/4W
RUT 0683-6215 RIFXD COMP 620 OHM 5% 1/4W
RULB 0683-6215 RIFXD COMP 620 OHM SE 1/tW
R449 0683-6815 RIFXO COMP 680 OHM 5% 1/UW
R450 0683-1215 RIFXD COMP 120 CHM 5% 1/4W
R451 0684-2721 RIFXD COMP 2700 OHM 10% 1/4
R452 0684-1041 RIFXD COMP 100K OHM 10% 1/48 *
RusS3 0683-6835 RIFXD COMP 68K OHM 5% 1/4W
RUSE 0683-1625 RIFXD COMP 5600 OHM 5% 1/4W
RUSS 0683-2225 RIFXO COMP 2.2K OHM 5% 1/04
FACTORY SELECTED PARTITYPICAL VALUE GIVEN
RUSE 0683-2445 RIFXD COMP 240K OHM 5% 1/46
R457 0683-1845 RIFXO COMP 180K OHM 5% 1/44
R458 0683-8245 RIFXO COMP E20K OMM 5% 1/UW
A500 04260-7025 CHASSIS ASSY:INCLISZeJ] =JU
115/230V ONLY
* FACTORY SELECTED PART,TYPICAL VALUE GIVEN
# See list of abbreviations in introduction to thia section
N93297-2'
Model 4260A Section VI
Table 8-1
Table 6-1. Reference Designation Index (Cont'd)
Ref
Designation ® Stock No. Description # Note
A600 O84 260-7026 ASSY ¡DECIMAL POINT AND DIRECTION IND
R60I 0687-1541 RIFXO COMP 150K СММ 10% 1/2W
V6Q1 2140-0018 LAMPIGLOW 1/10W
YEOZ 2140-0016 LAMPIGLOW 1/10W
v603 2140-0018 LAMPIGLOW 1/10W
vEDA 2140-0018 LAMPIGLOW 17/104
vees 2140-0018 LAMPIGLOW 1/10W
Ci 0160-1580 CIFXD MICA O.2 UF 0.2%
Ce 0160=1515 CIFXO MICA 2200 PF 10% SOOVDCN
FACTORY SELECTED PARTITYPICAL VALUE GIVEN
c3 0121-6205 CIVAR CER S PF 250VDCW
Ci 0160=1031 C4FXD CER 10 PF 10% B00VDCW
FACTORY SELECTED PARTTYPICAL VALUE GIVEN
£5 0160-1510 CIFXD MICA 1200 PF 10% 500VDCW *
Ce 0160=1227 CIFXD METAL PAPER ,05 UF 10% 250V0DCW *
CRI 1910-0016 DIODE VGERMANIUM 100MA АТ 0.85V 60PIV
CR 1910-0016 DIOOE1GERMANIUM 100MA AT O.85V é60FIV
F1 2112-0110 FUSEICARTRIDGE SLO=BLO O.1A
wl 1251-0148 CONNECTORTPONER 3 PIN MALE
Je 1251-0141 CONNECTOR 1B=LCONTALT
J3 1251-0135 CONNECTORIFRINTED CIRCUIT 15 CONTACTS
Ji 1251=0135 CONNECTORIPRINTED CIRCUIT 15 CONTACTS
J5 CONNECTOR INCLUDES 1
1%10=0011 BINDING POSTIBLACK(Z USED)
QU260-5021 INSULATOR!Z EACH
OU260-5022 INSULATORIZ EACH
Jb QOuU260-5028 CONNECTORIFOR BIAS BATTERY
4260-1049 SHORTING BAR FOR Jé
„7 04260-5028 CONNECTORIFOR EXT RESISTOR
CPiLS AND BIAS CAPACITOR
Q4260-1049 SHORTING BAR FOR JT
JB 04260-5028 CONNECTOR FOR EXT RESISTOR:CS:LP
04260-104959 SHORTING BAR FOR J8
Je 4260-508 CONNECTORIFOR EXT OSCILLATOR
J 10 QuU260~-5028 CONNECTORIFOR DETECTOR
Mi 1120=0734 МЕТЕР {50 UA
R1 2100-1172 RIVAR DEPC 5K OM 108% 0.34
Rg 0684-1521 RIFXD COMP 1500 OHM 10% 1/4W
R3 04260-7028 RIVAR WW 5K OHM
RA 2100-1171 RIVAR Ww 10/4 OHM 10% 1.2W
RS 04260-7051 RIVAR WW 16K OMM +100 or
REPLACE ONLY WITH DQ DIA
* FACTORY SELECTED PART3TYF ICAL VALUE GIVEN
# Ses list of abbreviations in Introduction to this section
02337 -2 8-9
Section VI Model 4260A
Table 6-1
Table 6-1, Reference Designation Index (Cont'd)
Referen
Desiration 4 Stock No. Description # Note
Ré Oégé=1373 RIFXQU DEPC 1 OHM 5% 1/24
R7 0684-1041 RIFXD COMP 100K OHM 108 1/4W
51 3101-0206 SWITCHISLIQE{(LINE ON)
52 3101-0033 SWITCHISLICE CPDT(115/230V}
53 5101-0244 ESWITCHISLICECINT=EXT OSC)
Ti 04260-535602 TRANSFORMERIPOWER
Te 04260-856503 TRANSFORMER (OSC
wl 8120-0078 CABLE ASSYIFOWER CORD
xF1 1400-0084 HOLDERIFUSE POST TYPE 3AG
MISCELLANEQUS
4260-1039. BRACKET
04260-10841 ERACKETI1COLNTER
1410-0033 BUSHING FOR CAL CONTROL
04260-23542 CABLE1TDTAL
1140-0030 COUNTERICRL
Quz60~=7027 GEAR ASSYICRL COUNTER DRIVE
Qu260~-5030 INDEX
0370-0050 KNOB FOR CAL CONTROL
0370-0275 KNDE FOR CAL CONTROL
0370-0272 KNOBIDGa CONTROL
0370-0267 KNOBIDa YERMIER
0370-0077 KNOB $ FUNCTION
0370-0077 KNOBIPANGE
0370-0256 KNOBISENSITIVITY
0260-5024 LENSIFINDER
04260-5000 PULLEY FOR R5
4260-8541 SPRINGIDIAL CABLE
04260-5027 WINDOW GLASS
ITEMS BELOW FOR 100 VAC OR 200 VAC ONLY
1251-0048 ACAPTERIPLLG (100/200V ONLY)
QU260=-7032 CHASSIS ASSYIINCL S2r.Jl=JH
4260-1038 FRONT PANEL
7120-0445 NAMEPLATE LOQ/7200V
04260-9990 OPERATING AND SERVICE MANUAL (100/200 VAC ONLY)
+ See list of abbreviations In introduction to this section
6-10 02337-2
Model 42G0A Section VI
Table 6-2
Table 6-2. Replaceable Parte
à Stock No, Description Mir, Mfr, Part No. TQ
0121-0039 C!VAR CER E=S0PF 350VDCW 28480 0121-0039 2
0121-0205 C:VAR CER 5 PF 250VDCW 28480 0121-0205 1
0140-0194 CIFXD MICA 110 РР 5% 300 VDCW 04062 ROMISFILIJEC i
0140-0204 CEFXO MICA 47PF 5% NPO SOCYDEN 04062 ROMISEUTOJSC 1
0160-1031 CIFXD CER 10 PF 10% SQOQVDCW 28480 0160-1031 1
0160-1039 CiFXD CER 25 PF 10% SOGVDC# 28480 0160=1039 1
0160-1045 CIFXO CER 4 PF/70.2% PF SOOVDCW 28480 0160-1045 1
0166-1161 CIFXD PAPER 2000 РЕ 160% 600VDCMW 28480 (0160-118) i
0160-1227 CtFXD METAL PAPER 405 UF 10% Z50VDCW 28480 0160-1227 1
0160-1271 CIFXD MY Q.01 UF 5% 5SÓVOCH 28480 0160-1271
G160=1510 CIFxD MICA 1200 PF 10% 50OVDCNW 28480 0160-1510 1
0160-1515 C1FXD MICA 2200 PF 10% 500VDCW | 28480 0160-1515 1
0160-1540 CIFXD MICA 0,2 UF 0.2% 284809 0160-1540 1
0160-1542 CiFXD MY 13500 PF 10% B5OVOCW 28480 0160-1542 1
160-1543 CIFXD MY 2200 PF 5% SOVYECN 28480 (0160-1543 1
0160-1544 CIFXO MY 4700 PF S% SOVDCW 28480 0160-1544 3
0160-1545 CIFXD MY 0.022 UF 5% SOVDCW 28480 0160-1545 1
0160-1546 CIFXD MY 0.22 UF 10% 100VDCW 28480 D16C-1548 1
0180-0708 CitFXD ELECT 3 UF 15YDCW 28480 0180-0708 1
0180-0756 CIFXO ELECT 20 UF 15YECW 28480 0180-0756 11
Q180=0773 CIFXO ELECT 50 UF 15VDCW 28480 [0180-0777 2
0180-0945 CIFXD ELECT 50 UF &VDCw 28480 (0180-0945 4
1809-0962 CIFXD TANT 1 UF 20% 35vDCW 28480 (0180-0962 1
0180-0964 CIFXD ELECT 100 UF 50VDCW 28480 0180-0964 1
0180-0965 CIFXD ELECT 200 UF 25VDCW 28480 0180-0965 L
0180-0966 C:FXD TANT. 22C UF 10% 10VDCW 28480 | 0180-09606 1
0180-0467 CtFxD ELECT 500 UF 25VOCW 28480 0180-0967 1
0180-0978 C1FXD TANT 1 UF +75-15% SOVDCW 28480 0180-0976 1
0180-0981 CIFXD ELECT 22 UF 180VDCW 264680 |U 180-0981 1
9186-1025 C:+FXD TANT 22 UF 20N 6VDCW 281480 (0186-1025 1
0180-1026 CtFXD TANT 47 LF 20% &VOCW 28480 0180-1026 3
0180-1029 CIFXD TANT 1 UF 20% 15VvOCY 28480 [0180-1029 10
0180-1052 CIFXD TANT 10 UF 204 15VOCW 28480 (0180-1032 2
0370-0050 KNOB FOR CRL CONTROL 28480 [0370-0080 1
370-0077 KNOBIFUNCTION 28480 0370-0077 2
0370-0256 KNOBISENSITIVITY 28480 0370-0256 1
0370-0267 KNOBIDG VERNIER 28480 [0370-0267 1
0370-0272 KNOBIDQ CONTROL 28480 0370-0272 1
0370-0275 RNOB FOR CRL CONTROL 28480 0370-0275 1
0683-1045 RIFXD COMP 100K OHM 5% 1,44 01121 ¡CB 1045 2
Q&B3=1215% RIFXD COMP 120 OHM 5% 1/74¥ 01121 JCB 1215 1
QaBI=122% RIFXO COMP 1200 OHM 5% 174 01121 |CB 1225 éd
0683-1235 RIFXD COMP 12K OHM 55 1/0W 01121 ¡CB 1235 3
0683-1335 RIFXD COMP 13K OHM 5X 1/7/84 01121 CB 1335 1
0823-1845 RIFXD COMP 180K OHM 5% 1/4W 01121 ICE 1845 1
0683-1855 RIFXO COMP 1.8 MEGOHM 5% 1/4W O1121 :CB 1855 i
0683-2025 RIFXD COMP 2000 OHM Sk 1/54 01121 |CB 202% i
0683-2035 RIFXD COMP ZOK CAM 5% 1/48 01121 CB 2038 1
0683-2225 RIFXD COMP 2.2K QHM 5% .1/4W 01121 ¡GB 2225 1
0683-2425 RIFXD COMP 2400 OHM 5% 1/4W 01121 ICE 2425 1
0683-2445 RIFAD COMP 240K OHM SE 1/48 01121 CB 244% 1
# See list of abbreviations In Introduction to this section
02337-2 6-11
Section VI Model 42680A
Table 8-2
Table 6-2, Replaceable Parts (Cont'd)
® Stock No, Description # Mir. Mir. Part No, TQ
0685-2715 RIEXO COMP 270 CAM SK 1/44 OL121 [CB 271% 1
0683-2735 RIFXD COMP 27K OHM 5% L/4W 01121 CB 2735 1
0683-2745 RIFXD COMP 270K OHM 5% 1706 01121 CB 2745 1
066-3015 RIFXD COMP 300 OHM 5% 1/6 01121 CB 3015 1
0683-3025 RtFXD COMP 300C OHM 5% 1/4W 01121 CB 302% 1
0683-3045 RIFXD COMP 300K OHM 5% 174% 01121 /CB 3045 1
0683-3315 RI:FXD COMP 330 OHM 5% 1/44 01121 [CB 3315 1
0683-3625 RIFXD COMP 3600 OHM 5% 1/4W 01121 CB 3625 L
0683-3645 RIFXD COMP 360K OHM 5% 1/46 28480 0683-3645 1
0683-4715 RIFXD COMP 470 OHM 5% 1/44 01121 CB 4715 1
0683-5135 RIFXD COMP 51K OHM 5% 1/0W 01121 CB 5135 i
0683-5675 RiFXD COMP 5600 OHM 5% 1744 01121 [CB 5628 5
0663-5635 RIFXD COMP 56K OMM 5% 1/08 01121 [CB 5635 3
0683-6215 RIFXD COMP 620 OHM 5% 1/40 01121 CB 6215 3
0683-6815 RIFXD COMP 680 OHM 5% 1/44 01121 CB 6015 2
0683-6825 RIFXD COMP 6800 OHM 5K 1/74N 01121 [CB 6825 1
0683-6835 RIFXD COMP 68K OHM 5% 1/48 01121 CB 6835 2
0683-7515 RIFXD COMP 750 OHM 5% 1/4W 01121 C5 7515 2
0683-8215 RIFXD COMP B20 OHM 5% 1/46 01121 CB 6215 i
0683-8225 RIFXO COMP 8200 OHM 5% 1/44 01121 CB 8225 1
0683-8245 RIFXD COMP B20K OHM 5% 1/4% 01121 |CB 8245 1
0684-1031 RIFXO COMP LOK OHM 10% 1/4W O1121 CB-1031 2
0684-1041 RIFXO COMP 100K OHM 10% 1/4W O1121 CB 1041 ô
0684-1231 RIFXO COMP 12K OHM 10% 1/4W 28480 0684-1231 2
0684-1521 RIFXD COMP 1500 OHM 10% 1/40 28480 0684-1521 4
0684-1531 RIFXD COMP 15K CHM 10% 174W Ol121/1C8 1531 1
068#-2231 RIFXD COMP 22K OMM 10% L/4W 01121 [CB 2251 3
0684-2721 RIFXD COMP 2700 OHM 10% 1/4W 01121 CB 2721 6
0684-2741 RIFXD COMP 270K OHM 108 I/4w 01121 CB 2741 3
0684-4721 RIFXD COMP 4700 DMM 10% L/UMW 01121 |CB 4721 4
0684-4731 RiFXD COMP 47K OMM 10% 1744 01121 CB 473) 2
0684-5621 RIFXD COMP 5.6K OHM 10% L/UW 01121 |CB 5621 i
068U-6021 RIFXD COMP 6800 OHM 10% 1/4W 01121 CB 6821 5
0684-6831 RIFXD COMP 698K CHM 10% 1/44 28480 0684-6831 i
Q6BH=B221 RIFXD COMP 8200 OHM 109 1/44 01121 |CB 8221 3
0687-1541 RIFXD COMP 150K OHM 10% 1/24 01121 JEB 1541 1
0490-1821 RIFXD COMP 1800 OHM LOS 1% 01121 GB 1821 1
0698-1268 RIEXD MET FLM LOK OHM 0:18 1/24 28480 0698-1268 i
0698-1373 RIFXD DEPC § OHM 3% 1/2W 28480 |D69B-1373 1
0498-1374 RIFXD MET FLM 30K OHM 1% 1 4W 28480 [0698-1374 1
0698-1375 RIFXD MET FLM 3K OHM §% I/uW 28480 |D698- 1375 1
0698-1376 RIFXD MET FLM 97% ObM Cel% 1/44 28480 |0658-1376 1
0698-1377 RIFXD MET FLM 970K OHM AE As 28480 0698-4377 1
0698-1380 RIFXD MET FLM 1X OHM 0,1 Ww 28480 (Q698=-1 1
0698-1381 RIFXD MET FLM 100 OHM 0,1% 1/2W 26480 |0698=1581 1
0698-1400 R:FXD MET FLM 500 OHM 0,1% 1/2W 28480 | 0698-1400 1
0698-4142 RIFXO MET FLM 15,8 OMM 1% J /4W 28480 | 0698-4145 1
0757-0956 RIFXO MET FLM 1.2K OHM 285 1/64 28480 0757-0926 3
0757-07 RIFXD MET FLM 1.5K OHM 2% 1/8 28480 0757-0928 2
0757-0950 AIFXD MET FLM 1,8K OHM 2% 1/68 28480 0757-0920 1
0757-0975 RIFXD MET FLM 3,0K OHM 2% 1/8 28480 0757-0935 2
0757-0939 R:FXD MET FLM 4,3K OHM 2% 1/8W 28480) 0757-0939 4
0757-0981 R:FXD MET FLM 5,1K OHM 2% 1/8W 28480| 0757-0941 1
+ See list of abbrevictions in introduction to this section
6-12 02337-2
Model 4260A
Section VI
Table 8-2
Table 6-2, Replaceable Parts (Cont'd)
® Stock No, Description # Mir. Mir. Part No. TQ
0757-0947 RIFXO MET FLM 9.1K OHM 24 1/64 28480 0757-0547 3
0757-0951 RIFXD MET FLM 13K OHM 2% 178% 28480 10757-09541 2
0757-0952 RIFXO MET FLM 15K OHM 2% 1/84 28480 0757-0982 à
0757-0953 REFXD MET FLM 16K OHM 2% 1/8W 28480 (0757-0953 1
0757-0955 RIFXD MET FLM 20K OHM 2% L/BW 28480 [0757-0985 1
0757-0959 REFXD MET FLM 30K OHM 2% 1/8W 28480 |0757=-0959 i
0757-0560 REFXD MET FLM 33 OHM 28 1/84 28480 0757-0960 5
0757-0968 RIFXD MET FLM 68K OHM 2% 1/84 20480 10757-0968 2
1120-0734 METERI5O UA 28480 |1120-0734 1
1140-0030 COUNTERICRL 26480 | 1140-6030 1
1205-0033 HEAT DISSIPATOR FOR Q201 28480 | 1205-0033 1
1251-0048 ADAPTER:PLUG (100/200V ONLY) 28480 | 1251-0048 1
1251-0135 CONNECTORIPRINTED CIRCUIT 15 CONTACTS 95I54 | 50-615UR 2
1251-0141 CONNECTOR 1 18-CONTACT 28480 | 1251-0141 1
1251-0148 CONNECTOR IPOWER 3 PIN MALE 60427 |H-1061=2 1
1400-0084 HOLDERIFUSE POST TYPE 3AG 75915|342014 1
1410-0033 BUSFING FOR CRL CONTROL 28480 | 1410-0933 1
1510-0011 BINDING POSTIBLACK 28480 | 1510-0011 2
1853-0010 TRANSISTORISILICON PNP 28480| 1853-0010
1854-0003 TRANSISTOR :NPN SILICON 28480| 1854-0003 2
1854-0022 TRANSISTORINEN SILICON 28480! 1854-0022 1
1854-0071 TRANSTSTORISILICON NPN 2N3391 89473 | 164792 32
1901-0026 CIODEISILICON 200 PiV 0.5 AMP 28480 | 1901-0026 1
1901-0028 DIODESSILICON 400 PIV 0.5 AMP 28480! 1901-0028 1
1901-5040 DIOCEISILICON 30 MA AT iv 30 PIV 28480 | 1901-0046 15
1901-0045 SEMICON DEVICE :CIODE SILICON 28480 | 1901-0045 3
1902-0031 DIOCE :+BREAKDOWN 12.7V 5% 900 Мы 28480 | 1902-0031 2
1902-0037 SEMICON DEVICE 1DIODLE 28480 | 1902-0037 L
1902-0057 SEMICON DEVICE IDIODE SILICON 28460 | 1902-0087 1
1910-0016 CIOCEIGERMANIUM 100MA AT O.85V ФОРТУ 28480 | 1910-0016 14
2100-1171 RIVAR WW 10/4 OHM 10% 1,2W 28480 |2100-1171 1
2100-1172 RIVAR DEPC 5K OHM 10% 0.3W 28480 |2100=11 75 1
2100-1776 RIVAR WW 10K OHM 10% LIN 1/2W 28480 [2100-1775 1
2100-1777 RIVAR WW 20K OHM 10% LIN 1/2W 28480 2100-1777 L
2110-0110 FUSEICARTRIDGE SLO-BLO 0, lA 28480 |2110-01 10 1
2140-0018 LAMPIGLOW 1/10W 24455 |NE 2E1 5
3101-0033 SWITCHISLICE OPDT(115/230V) 79727 6510 C 1
3101-0206 SWITCHISLIDE (LINE ON) 28480 3101-0206 1
3101-0244 SWITCHISLIDE (INT=EXT 05C) 28480 [3101-0244 1
7120-0445 NAMEPLATE 1! 100/200V 28480 7120-0445 1
8120-0078 CABLE ASSYIPOWER CORD 20480 |8120-0078 1
9100-0729 INDUCTORIFXD 100 UH 10% 28480 9100-0726 1
04 255-8604 RIFXD Wi 10 OHM 0.1% 28480 | 0255-5608 1
04 260-1039 BRACKET 289480 00260-1039 1
04260-1038 FRONT PANEL 28480 [04260-1038 }
04260- 1049 SHORTING BAR FOR Jé 28480 [04260-1049 3
OU260~1041 BRACKETICOUNTER 28480 [04280-1041 1
# See list of abbreviations in Introduction to this section
'02337-2 8-13
Section VI Model 42604
Table 5-2
Table 6-2, Replaceable Parts (Cont'd)
Tp Stock No. Description 4 Mir, Mir, Part No. TQ
0260-5021 INSULATORtZ EACH 28480 (04260-5021 a
QOU260=-5022 INSULATOR:Z EACH 28480 04260=5022 2
©4260-5028 CONNECTORIFOR BIAS BATTERY 28480 (04260-5028 5
04260-5024 LENSIFINDER 28480 04260-5024 1
04 260-5027 WINDOW GLASS 28480 04260=5027 1
04260=5030 INDEX 28480 [04260-5030 1
04260-5099 PULLEY FOR RS 28480 [04260-5009 1
04260=7021 ASSY: RANGE AND FUNCTION SWITCH 28480 (4260-7021 a
OUZ260-7024 ASSYIDETECTOR 28480 |OH260=T0D24 1
Qu260=702% CHASSIS ASSY:INCLTSZtJ1 = JR 28480 |104260=7 025 1
04260-7026 ASSYIDECIMAL POINT AND DIRECTION IND 28480 94260-70268 1
QU 2&0=T7028 RIVAR WW SK OHM 28480 | 04260-702B8 1
QU260~T027 GEAR ASSYICRL COUNTER DRIVE 28480 08260-7027 1
QUe 7031 RIVAR WW 16K OMM +100 OHM 28489 | QUZ260-7051 1
QUZ6Q-7032 CHASSIS ASSYIINCL 521J1= 4 ZB480 04260-703232 1
04260-854222 CABLETDIAL - 28480 OLZ60-B42 i
QUZ60-8541 SPRINGIDIAL CABLE | 28489 U4Z6C-8541 1
|
04260-86902 TRANSFORMER 1POWER | 28480 04260-8602 1
04260-B607 TRANSFORMER 1OSC 28480 94Z60-8603 1
04 260-8604 R:FXD Ww 0,986 OHM 0,3% 28480 |04260-3604 1
04260-87078 ASSY:POWER SUPPLY AND 1KHZ OSC 28480 04260-8702 1
4260-8703 ASS Y :REFERENCE VOLTAGE 23430 Q4260-8703 1
# See list of abbreviations in Introduction to this section
6-14 02337-2
‘выл
Model 4260A
Cade
Mo. Manufacturer Address
mean 1.5.8. Common Ary supplier of UE,
JOLIE MeCay Electron cs Wount Hally Springs, Pa,
21212 %age. Electronics Corp. Rochester, 8,7,
TM Humidial Collen, Calif,
DT Garlock Ing,
E eclronics Progucis Div, Camden, М...
DIESE Adidro% Corp, Née Bedford. dass.
CELTS hep, Inc. Harrisburg, Pa,
OL7A: Aircraft Radio Carp, Bannlan, Mil.
Odel5 Merthem Enganearing Laboitores. Inc.
Burbngton, Wis,
00857 Sangamo Electric Co,
Pickens Biv, Pickens, 5.0.
19866 Cos Cogineanng Ca. Los Angeles, Calif.
00595 Carl E. Holmes Cerp, Los Angales, Calif,
MILL Allen Bradley Co, Milwauxee, Wis.
01755 Liteon Indiscries, bnc, Geely Milla, Cati,
DIZEL TAYW Semiconductors, Inc. Lawndale, Calif.
017295 Texas Instruments, Inc,
Transistor Froducis Civ, Dallas, Texas
01398 Tha Al'ignce Wg. Co. Aliance, Ohie
01589 Pacil Relays, Ing, Van Nuys, Calif,
01930 Amerock Corp, Rotkiard, 16.
DISEL Pulsa Engineering Со, Senta Clara, Cali,
02114 Fersoucube Corp, of America Jaugmiting, HY.
12736 Cola Rubber and Plastics Inc, Pala Alle, Callf.
02660 Amphenol-Borg Elaclranics Corp. Chicago, MI
02735 fadio Corp, of Amárica, Semiconducios
and Materials Div, Somervilla, M.J.
07771 Vocale Co, of Ámerica, Inc,
Old $aybrock, Conn,
92777 Hopkins Engineering Lo, ап Рагпамни, Сам.
09508 GE. Semiconductor Prod, Dept. 3vitacuse, OY,
03705 Apea Machine & Tool Co, Oaylga, Ghia
pare) Eldana Corp. Complan, Galil,
03877 Transilian Electric Corp. Waka’ ald, Mags.
O3088 Pyreli'm Resistor Co. Ме. Cedar Arglls, Mad
04954 Singer Co, Cart Diva,
Finderne Plan Somerville, Mid,
04095 Murgas, Hártand Hegeman Eletl, Св.
Hartferd, Conn.
(4013 Taures Cerp. Lambertville, M.J.
04047 Elmencbh Products Cr. Mew York, N.Y.
04272 Hef) Cividon of Aegean Myrile Beacn, 5,C.
04354 Precisión Paper Tuba Co. Chicago, Ill,
04404 Dymec Division of Hewlel+-Paciard Co.
Pain Allo, Calif,
04651 Sylvamia Electiit Producto,
Microwave Devica Day. Mouninin View, Talat,
04717 Molciala, Inc, Semaconductor Prod. Div.
Phaema, Arizona
04797 Foran Coy, Ing, Western Div. Culvar City, Calif.
98773 Automatic Elects ©, Horthlshe, Ill,
14796 Seguoa Wire Ce. Radwood Sily, Cali,
OASLL Piecismon Cuil Epramg Co. El Monte, Celid.
04570 PM. Meter Company Wasithestai, II.
95006 Twentieth Centuey Piastes, lac,
Los Angeles, Call,
05277 Wastmgnocze Electric Carp.
jemi-Cenduelar Depl. Yeungwood, Pa,
(5547 UILrénie, HE, San Wales, Calif.
05593 IIlmitronie Engineering Co. Sunnyvale, Call,
05615 Cosmó Plastic
spin Electrical Spee. Co] Cleveland, Ohio
15674 Barbel Colman Lo, Rackferd, 1h,
COTE Tiffen optical Co.
Roslyn Heights, Long Island, M.Y.
05729 Malng-Tel Carp, Plaimaew, H..
05701 Stewar Enginaaring Ca. Santa Cruz, Calif.
05820 Yarefield Engineering It, = ‘Wakafield, Mass,
DEQ04 The Bassica Co, Br.dganort, Conn,
C6175 Bausch and Lamb Optical Co. Rochestel, NY.
06492 E.T.A. Products Co. nl Anetiica Chicago, 11,
06475 Meslaln Devices Int, Burbank, Call,
1654C Amalom Elactronic Mardwears Ca, Ihe,
Haw Rachelle, H.¥,
CE55% Reede Electrical imatrument Ca, Inc,
Feracock, NH.
DESS6 General Oavices LD, IMC. Indianapolis, Ind.
M5 Miclear Corp. of America
U5. Sensor Div, Fhoer x, An
06812 Totiagion Mig, Co, West Div, Van Mugs, Cal,
96920 Ertel-MeCullaugh Ing, Sen Carlos, Cal,
[7195 Kalvin Elecint Co. Wan yA, Cali
07118 Sorrng Glass Works
Elecipme Components Oapl, Bradiod, Pa.
07176 “gman Co. Pasadane, Calif,
COS
Table 6-3.
Manufacturer's Code List
Section VI
Table 6-3
The following ecda numbers are from the Federal Supply Code for Manufacturars Cataloging Handbooks H4-1 [Name to Code)
and H4-2 [Code Yo Name) and their latest supplements. The date of revision and the date of the cupplementa used appear at
the bottom of sach page. Alphabetical codes have bean arbitrarily assigned to suppliers not appearing in the H# handbooks.
Revised; Way, [965
02337-1
Cora
Ho,
07137
MEL
1149
(7233
17861
07163
07377
OTIB?
ur
07910
07933
27966
GTS H0
CAJAS
05289
05358
CAREY
08717
087 18
CETUR
08564
05026
(5134
09148
09250
(456$
10214
19411
LO 46
[1236
11447
11242
11317
11554
11711
Ру
17870
12136
[2497
17859
12881
12930
13103
|3 398
13835
14093
14733
14232
[4493
14655
1445]
15203
|529;
15558
18777
15418
15508
16037
16352
16685
LE758
17118
17478
LA476
LE456
|163
A573
19315
18501
1370]
Мапи Рас уг Address
Transistor Electronics Corp, Minneapolis, Mint.
Westinghouse Elacilic Corp.
Election Tube Div, £ mira, N.Y.
Frimanm Gop. Haw York, NT.
Conch-Gräphik Co, Caty of Industry, Сан,
hunat Gelp, Les Angales, Calif.
Farchid Camera & Inst, Carp,
Semicondector Div, Mounlaln Yew, Calit,
Minnesola Rutbar Co. Minneapolis, Min,
The Birtehal Cop. Los Angeles, Catif.
Technical Wira Pioducts Inc, Cranford, N.J,
Contnental Davica Cónp, Нез оспа, Calif,
Raylheon Kfe, Ce,
Semiconductor Day.
Shockley Semi-Conduétér
Laboratories
Bonaion Redio Corp.
1.5. Enginearing Co.
Bilan, Dalbert, Ca.
Burgoso Battery Co.
Niagara Falla Ontario, Canada
Watarbury, Cann,
Mountasn Wiew, Calif.
Fala Alte, Calif.
Rockaway, NH.)
Loy Angeles, Calif,
Fonona, Calf,
The Bristal Са.
Sloan Company
ITT Cenaen Eletiat Ing,, Phoemia Div,
Phoenix, Arizona
CBE Electonics Semigondución
Operations, Dir, 61 CBS inc. Lowell, Mass.
Мне кп Indianapolis, Ind.
Babeotk Ralays Civ. Costa Maza, Calif.
Tacos Capeciter Co, Houston, Texas
Atohm Elsctronscs Suri Valley, Cabil,
Electro Agsambiing, inc, Chicaga, III,
Mallaiy Battery Co, of
Canada, Lid. Tarento, Onlaria, Canada
Ganmral Transistor Western Corp.
Los Angeles, Calif.
Ti=Tal, Ing. Berkeley, Calif.
Carboryndua Co. Hragura Falla, HT,
CTS ol Bamna,inc. Beme, ind.
Chicago Telwphene ef California, Ine.
50, Pasadena, Calid,
Bay Stete Ето пс Garp. Waltham, Wnsa.
Miregwave Electronics Corp. Palo Alte, Calif,
Duncan Electronics nc. Costa Mata, Calif.
Ganaral Instroirent Corp,, Semiconductor Div,
Products Group Newark, MJ,
Impsrat Elactronse, Int. Buena Park, Call,
Halaba, Inc. " Pals Altn, Calil,
Philadelphia Handle Cr, Camden, 8.3.
Clarostat Mz, Co, Dover, AH,
Mippen Electric Co, Ltd. Tahya, Jagan
Meier Elacirenics Coip, Clark, NJ
teria Semiconductor Inc, Newport Beach, Calif.
Tharmalloy Dallas, Texts
Telefunken (5,M.B,H.: Hannover, Germany
Midland-Wright Dir, of Fecific Industring, (ng.
Kansas City, Kansas
Méwbory Park, Cell,
Santa Monica, Call,
Canshohochar, Pa.
Loveland, Geln,
Maware, H.l.
San Jose, Calif,
New York, N.Y.
N.Hollywcod, Galil.
dam: Tech
Calil. Faslsin Corp.
Amarncan Componenta, IN,
Hewketh-Packaeg Company
Cornall Oublie Electric Coup.
Willigns Mfg. Co.
Webslar Electronics Ca.
Adjustable Bushing Co.
Micron Elactianics
Garden City, Long Island, MY.
Twnatlath Century
Coil Spring Ga, Santa Cara, Calif,
Amalea Ie. ME. View, Calif,
Davan Cay. Themes A. Edison Ind.
MeGraw Edison Co. Long Island Coty, N.Y,
Splucé Fine Mica Go, Epiuté Pine, NT
Саири!#* Diode Corp, Lodi, WJ.
Ideal Paps, Mater Go, Inc,
De Jur Meter Div, Erogklyn, NT,
Delco Radia Div, of G.M. Caip, Kokam, Ind,
Theimenetics Inc, Canoga Para. Cati.
Trarde Company Mountain View, Cabif,
Ty-Cá: Mily. Cn ,aNC. Hollision, Mass,
Radio Inéusties Des Plaisés, III,
Cuba Insiiuneat, INE, М1, Misco, NY,
E.L DuPont and Co, Inc. Wılmanglua, Del,
The Sandi Carp,
Eclipsa-Franger Div,
Thomas À Edisçn Industries,
Div, of MeGrew-E4 son Co. West Dienge, NJ,
Elactea Mig. CD, Ingepentance, Kansas
Téterkqig, КН...
Sun Walley, Calil..
Code
Me.
20183
21734
EM
21335
24455
#4655
#6365
16462
26997
CAMEL
43173
35434
36106
57442
39543
40920
42190
43590
11655
17904
42620
13956
£2040
52083
54794
55076
55541
55918
56747
56769
59445
£9730
SETE]
61775
2119
за
64055
65092
6735
BEE
10276
MIE
70318
10485
70563
70903
10998
11002
1104]
T1318
11206
Mala
11490
TLAJE
T1447
71450
TER
Ца
11482
HERD
71616
71700
МЫ
7173
11785
71584
12136
14707
12454
126.9
17656
Fares
Menvfocturar Address
General Alinnics Corp.
Enáculona, Ine.
Fansieel Metallu-gical Corp,
Tha Falnir Beering Co,
SE. Ladp Division
Nela aig, Cleveland, Orin
Gansial Radio Ce, Wes! Cancold, Mass.
Gries Repinduchr Coup, Mew Rochalla, N.Y.
Gioket Fite Sa. of America, Ing,
Cartstadt, N.D.
Lancaster, Pa.
Pala Alto, Cavif,
Qwensbore, Ky,
Chicage, II,
Philade"phia, Fa,
Heu York, MUY.
Me. Chicago, III,
Mew Brilain, Coca,
Hamilton Watch Ca.
Hew|gil-Packard Go,
BE. Recenving Tuba Dag.
Lactrohm Inc.
Siáamwyck Cor. Products Lid.
Hawkesbury, Ontaro, Cadada
P.R, Mallory & Ca, inc, indi ara polis, Ind.
Mechanical industries Prod, Co. Aka, Ohio
Miniature Procision Bracings, Inc, Kasme, Nah.
Mutér Co. Chicago, Ill.
A. Margren La, Englewnsé, Cole,
Otte Mig, Co, быта, ||.
Polaroid Carp; Cambrdpe, Mass.
Pratisian Themomátar & last. Co.
touthanpten, Pa.
Lexington, Mas,
Wastminster, Md.
Waltham, Wess.
Selma, N.C.
Reytheoo Company
Rowan Contollar Go.
fantorn Go,
Shalktross Mig. Co.
Simpson Ен Св. Chicago, 111.
Gonptone Carp, Elmaferd, N.Y.
Raytheon Co, Commercial Apparatus B
Systems Div. $0, Harwalk, Conn,
Spauldsng Fibré Co, Inc. Tonéwända, KT,
Epréqué Electric Co. Horlh Adams, Mass.
Telas, inc. ° §t.Paul, Minn.
Thomas & Baits Сп, Elizabeth, N.J.
Triplett Electrical Inst, Co. Eluitlon, Qnla
Unign Switéh and Signal, Div, of
Westinghouse Air Brake Co. Pittsburgh, Pe,
Urwarsal Electrit Go, Owosso, Mich,
Мага. Села Élactrie Ce Mi. Yainoa, NY.
Western Elsetrie Colt. May York, N.Y.
Weston inst. Div, oT Dayalıpn, ng,
Newark, №. Л.
Wittek Mig, Co, Chicago, 111.
Reva Mollansak Div, Wan, Waning &
Wip. Ca, EL Paul, Minn.
Allen Mig. Co. Hartford, Gori.
Allan Mig. Co. Hartford, Cann,
Allmetel Scraaa Product Co, Inc.
Garden Ely, N.Y.
Allanic lada Rubber Marks, lc. Chicage, II.
Amparite Go, Int, Uniar City, N. J.
Belden Mig. Co. Chicago, IN.
gird Electrome Cor. Slave and, Ohio
Binbach Radio Co, Naw folk, N.Y,
Bosiom Gear Works Day. of
Murray Co, of Teras
Bud Radio, TE. Wallouanb, Ya
Camise Fagienar Carp. Faramds, ML
Cardwell Candnnser Corp, Lindenhurst Lol, N.Y.
Bussmann Mig, (Им, ©!
McGraw-Edisan Co,
Chicago Condengar Corp.
CalsF, Spring Co. dnc,
ETS Coro,
[TT Gannon Elegliic dnc,
Cinema Engineering Go.
CP, Clam E Св,
Centalab Biv. of Sloke Uren Inc,
Milwaukee, Wis,
Quincy, Mass,
H. Louis, Wo,
Chicago, II.
Picc-Rivara, Calif.
Elkhart, md.
Las Angeles, Calif.
Burbank, Calif,
Chicago, WL
Commarcial Plagties Co Chicago, IN,
The Coftigh Ware Co. New York, N. Y.
Chicago Miniétuia Lamp Wewks Chicago, II,
AD. Smith Corp., Crowley Div,
Wesl O:enge, №...
Cinch Wig, Co, Howiid B. Jones Órv:
Chicago,
Do Corning Célp,
Elegtra Melive Mig, Co. Inc,
Willimante, Conn,
Cala Coal Co. Ine,
John E, Fast Co, Div, Victorges Inttf. Co.
стада, |.
Dialignt Coip. Biaakiyn, N.Y.
Indiana Genalal Corp., Elnstramics Div.
Kensby, M.1.
Crake Wig. Ca, Chicago, М,
Midland, Mich.
Providence, Al.
Code
Ma
DEE
72978
72964
729E7
73061
73076
11138
13293
rELLH
73508
73559
13687
13? 4
73743
#3793
73846
389%
13945
MATA
14455
14851
743568
Taam
75042
15378
15382
T5818
‚15913
TECOS
TENT
75433
FEAR?
76443
75530
76345
16h54
77068
FRY
el
17052
ELE
17630
77638
17764
17963
Tales
7283
18290
Eo
нал
THLE
78497
T0553
18780
78947
74156
79142
79751
rara
19162
1031
ECTZO
20139 Times Teleghele Equipnant
Falal
Dec?
AVES
60748
BE
Ra! à
R048
30509
Manufacturer Address
Hugh H. Eby Mc, Philadelphia, Pa,
Guoeman Co. Chicago, Il,
Robert M, Hadley Co. Los Angeles, Calif.
Ecié TécPnologieal Pioduéls, Ine. Erle, Pa,
Hamger Mig, Ce, Ing, Princeton, Ind,
H.W. Harper Go, Chicago, 11|,
Helioet Div, cf Béckhman Inst, Inc,
Fullerten, Calif,
Hughes Products Division af
Hughes Ancralt Co. Nawport Basch, Caril,
Arperár Elechgnic Cr, Div, of Naith
american Phillips Во, пс, Highaville, N.Y,
Eraciay Samicanduclal Corp, -— Hamdan, Conn.
Carling Elgétrié, Ing, HartHord, Conn.
George K, Gairatt Co,, Div.
MSL Induyiries Imc,
Fadéral Sérew Products Inc,
Fischer Special Mig, Co,
Thé Général Industries Ca,
Goshen Stemping & Too! Ca,
JED Electronics Carp,
Jennings Radia Mig, Corp.
Eignallte Inc,
Phitadalph:s, Pa.
Chicago, ||,
Cincinnati, Qhig
Elyria, Chas
Goshen, Ins.
Brooklyn, NF.
San Jasa, 'Catil.
Naptuna, N.J,
JH, Winns, and Fons Winthébiti, Mess.
Inguslial Condanser Corp, Chigage, 111,
AF. Products División dl Amphanole
Borg Elactinniós Cop, Danbury, Conn.
Е.Е. Johnsan Ca. Wasera, Minn.
Insérmations! Resistance Co. Philadelphia, Pa,
James Knièhis Co. Sandwich, IL
Kulka Elécirie Coeporgtien Mi, Yemon, NY.
Lenz Elaciro Hig, Ва, Chicago, [IN
Littleluse, Inc, Des Planas, IN,
Leid Mig, Co. Erie, Fu,
CY. Marwede|
General Instrumank Corp,
Mac a mod Div,
Jamas Willem Mig, Co, irc,
Л. Мея Со,
Moradnotk Milla
Mueller Electra Са,
Dek Menufaciuring Ce,
The Berdiz Corp,
Bund Pacific Div,
Pacific Matale Co.
Fhanpstran Inslrymenl and
Electianis Ca, South Pasadena, Calil.
Philadelohia Staël end Wire Corp.
Philadelphia, Pa.
American Machine & Fourdey Co,
Potter & Oremiiald Dir. Princeton, Ind,
TRAY Electrame Conponents Div. Camder, N.h
General Inst:ument Corp., Ractifie Civ.
Brsoklyn, NOT.
Harrisbulg, Fa.
Tarrance, Calif,
San Franéisce, Calif,
Mewaik, WL
Maiden, Mass,
Los Angeles, Calif.
San [aandia, Cahl.
Cleveland, Dhig
Crysial Lake, lll.
Ho, Hetfywoÿd, Cand,
Sun Francesco, Calif,
Regiglance Products Co,
Rubbarc"a"1 Corp. of Calif,
Shakepreol Mvision of [lingis
Too! Works Elgin, lll.
Signal Indicelor Corp. New Yok, HY.
Sruihérs-Bunn Ine. Pitman, N.J,
Thonpson-Bigmer & Со, Chicago, IN,
Tilly Mg. Co. San Francisco, Call.
Slgchpole Carbon Co, St. Marys, Pa,
Standard Thomson Corp.
Tiaeman Progucta, Ino
Transformar Engineers
Uginte Ca,
Waldes Kohingor In.
Vaedar fog, Ie.
Kengo Bfg. Co,
Confimental=Wirt Elactromes Cop.
Priladelphia, Fa
Hew Rochelle, N.Y,
Waltham, Mass,
Cleveland, Ohio
San Gabriel, Calif,
Newtonville, Wats,
Long Island City, HT.
Haitard, Cann,
Chicago, IL,
Zurich Mig. Coro.
Мерса Division of Sessions
Glos Co, Моги +12, M.J,
Schritzer Alley Products Co, Elzaveth, M2.
New York, N.Y,
Electonic Indusires Association, Any brand
Tatw menting EIA standards Washinglon, 6,0.
Uninar Swick, Div, Maxon
Electronics Cop,
United Transformer Corp.
Caltrd Elerirc Corp.
Bowing Ladaraiones, Ing,
Robertshaw Conlrels Co.
Al! Star Products Ing,
Avery Adhesive Label Dorp.
Mallemgioed, Conn.
Nea York, H.Y.
Стара, М.
Awersida, Calif,
Hitlsbhoro, ORG
Befignce, hia
Monrovia, Calif.
From, F3C. Handbook Sugplanants
H4-L Dated DECEMBER 1964
H4-2 Dated MARCH 1967
6-15
Section VI
Table 6-3
Code
Ma.
aos a
064
Bild
i013
8.095
BIT
513433
Alas
i453
état
1.05]
Bila?
Baer
n.d:
ÿzs7l
220%
LME
57176 Bstrgn Qivisipn, Renwell Industries Ine.
East Mewark, M.J,
57219 Twréheraït, Ine, Chicago, Е.
AZE4? Mejals A Controla Inc,
ipencér Products Ailleboré, Mass,
82768 Philhps-Advañéé Central Go. Joliet, 1,
Bah Ressaith Pégdutit Corp. Mädispn, Wis,
EXT) Rotran Wig. Cg., Ing, Woodstock, NY.
57H95 Vector Elections Co, Glendale, Calif,
81057 Wester Washar MIg. Co. Las Anpeles, Call,
A:054 Carr Fastener Co. Cambridge, Mass,
3096 Mew Hampshire Ball Gear, Mí,
Palaltorough, NH,
83325 General Inshument Cuip.,
Capaciior Qiv, Oailimginn, 5.C.
H1l48 ITT Woe and Cable Div, Lps Angales, Cati,
BIIDO Victor; Engineer Carp. Speinglield, WN.)
83738 Bando Corp, Fed Bank Div, Hed Bank, WJ,
93515 Hubmedl Comp, Mundelein, II.
81330 Sith, Herran H., Ing. Bregkln, MT.
83385 Central Sciéw Co, Chicago, IN,
83501 CavilE Wire amd Cable Co,
Div, al Ámalaca Corp, Bronktield, Mass.
01594 Burroughs Corp,
Electronic Tuba Die. Flgiñfielg, N,J,
Baran Évalkady Dev, Netignal Carbon
Div, Union Calida Corp, New York, N.Y.
83777 Model Éne, and ME, Int, Huminglon, Ind.
DONT
Monyfnetyurer Address
Hammarlund Cp, , Inc,
evaris, Amold, Co, INE,
International Insiroments Inc,
Grayhill Ca. LaGrange, lll.
Trad Teanslormar Corp. Venice, Calif
Winchesler Electronics Co,, np, Nprwálk, Cali,
Military Spécificälion arresare.ar
Wilkm Products, ng. Clevetand, Uhr
Irferpational Feclifwer Ceip, EI 3apundn, Calif.
The Airpar Producris Со, Cambridge, Wass,
Barry Coniroís, Div, Barry Wognt Coup,
Warerlon, Mass,
3koké, |||.
New York, Mt,
Bestor, Mass,
Orange, Conn.
Cartel Precigion Elecine Ca.
Spail: Fataday Inc,, Compea Hew
Eldéliié fre,
Jelfers Electronics [orion al
Hooaken, N.1.
A
Speer Carbon Со, Du Beis, Fa
Farchile Camera & Inst. Colp.,
Defense Prod. Davis Clıflan, Mu)
Magura Industrias, Inc. Greenwich, Conn,
Sy vania Electric Pigd, Inc,
Eteclienic Tube Origin Emperum, Pa,
Revised: May, 1965
Code
№.
33021
adil]
34 396
441!
#4970
ERA
5471
ESTA
#5 60
8591]
86197
#6579
ЖБЁ НЯ
A126
#1473
ÉTéb4
É7SIL
H5140
Baan
6247]
BASSE
#323]
ET
E65
SCLTS
90970
91260
91344
51413
4 | 505
91627
GER:
91737
91h21
914924
91961
92180
EEECT)
37196
97607
01357
CElgeel Optical Co, Ing.
Table 6-3.
Manufacturer Address
Fass, Ma
Great Neck, N.Y,
San Francisco, Celii,
{gallala, Feb,
Eloomingion, Ind,
Boonten, N.J,
Sen Francisco, Salil.
San Francisco, Cali,
Hamden, Cenn,
Checapa, IIL
Loyd Scruggs Co.
Aito Ététlronics Inc,
Ad, Qlesener Co, Enc,
TEN Capacitól Dir.
Sarkes Tarzan, Inc,
Boonton Welding Company
A.B. Boyd Ca,
RM. Bracanopme 4 Co,
Kailed Keds, Int.
Seamless Rubber Cp,
Clifton Prac aon Products Co, Inc,
Clon Heights, Ра,
Fiecisior Rubber Products Corp. Daykon, Óhic
Rady Carp of America, Electronic
Comp, € Devices Div. Hainaan, N.J,
Philce Cesparation [Lansdale Diwiziant
Lansdale, Pa,
Western Fibipus Glass Products Co.
Lan Francisco, Cani,
Yan Walers & Rogers Inc, San Francisca, Calif.
Tower MIE, Corp, Providence, F1.
Cutler-Hammar, Inc. Lincoln, NL
Could-Natianal Batteries, Int, SE, Paul, Minn,
Federal Telephone E Redio Corp, Clilton, NJ.
General M-lls, Ing, Buffaly, NY,
traybar Electric Co, Oakland, Cali,
Général Eléétié Orslichuliñg Corp,
Же Пап вай, Н.Т,
Uniled Transformer Sa. Chicago, III.
LUE Rubber Co, Consumer Ind. é Plastica
Prod. Div, Fassaic, N.1,
Begring Engwmeezing Ca, San Francisco, Cali,
Connor $ating Mig, Co, dan Francisco, Calif,
Wilter О 41 & Wameplate Co, El Monts, Calif.
Radio Materials Ce, Chicago, Il,
Augal Mé. Attiebúla, Mass,
Dale Electromes, Int, Columbus, Nebr,
Elca Corp. Willow Grave, Pa.
{лета Mfg, Co, Mt, Wakefield, Mass.
К Е Development Ce, Redeood Site, Calif.
Haneywetl Iií., Micro Seuteh Div.
Fraepml, NI,
Dakland, Calif.
Pasbidy, Mass,
Rochestar, M.Y,
Hahm-Brea, Sprng Ca,
TruCónnecio: Carp.
Unreal Industries, Inc,
Cily of Industry, Cela",
Tengolile Insulaled Wire Co. Inc,
Tarsylgwn, N.Y,
Syluarud Eléciric Prod, Ing,
Semironducior Cie. Woburn, Mass,
Code
Ma.
97365
au
SITE
93529
34.37
94144
4198
$454
34197
Meer
94310
$4330
94687
35023
45236
95736
$3163
95264
45265
96275
35348
85354
45712
95987
86067
35495
96256
96216
96130
96341
96301
37464
97539
97979
37983
9814]
85158
18770
98278
9829 |
98405
Manufacturer's Code List (cont'd)
Manufacturer Address
Robbins add Myers, Inc,
Stevens big, Ca, Inc,
Howard 1, Smrh !nc,
GV, Controls
General Cable Corp.
Raytheqn Ço,, Coma, iv,
Ind, Comp. Qperalens Quincy, Waza.
Scranirie Electronics Products, Ine.
Lovelang, Cale,
Namark, H.1,
New ‘fork, N.Y,
Wansfield, Ohio
Fort Mensinuih, BJ,
Livmgstan, М...
Bayonne, BLL
Tumg-Sol Electric, Inc.
Curtiss-Wright Corp,
Electronics Div,
South Chester Corp,
Tiu-Ohm Fréduets
Méméor Cémpoñénts Div, Huntiigiar, Ind.
Wire Cloth Products, PIC. Bellwoné, [il
Woe taster Prassed Aluminum Corp,
Worcester, Mass,
Gaorge A. Philbrics Resea:chers, Ine,
Boston, Mass.
Kian, Fla,
Mocdride, N.Y,
Long Island, N.Y,
Burbank, Calif,
Sheridan, yo,
Bridgeport, Cani
Aleomtiald, Mid,
Éasl Paterson, N.J,
Chesler, Fa,
Albas Products Carp.
Сол! нк! а Са ложе Corp.
Leeciplt wg. Ca., Inc.
Leres ElAciltars, INE.
Matienal Cos| Co.
МИ Рана, |.
Gordos Corp,
Mathode Mig. Co. Chicago, Ii
Capa Electric Go, ne. Franalin, Hd.
Wackeasad Co. Chicege, 114.
Hupgins Läboréigies Sunnyvale, Call,
Hi<Q fv, el Amiower Corp, Oman, N.Y.
Thoiderson-Messaner Div. of
daguire industries, Inc. ME. Carmel, 11.
Solar Manulaciuring Go, Los Angelns, Calif.
Carltgn Screw Ga, Chicago, HE.
Microwave Assoctales, Ing. Burlington, Mass.
Excel Transformer Go. Oakland, Gallf.
Industrinl Retaining Ring Co. lewingten, A.J.
Automatic & Précision M. Englewacd, №...
Faon Rasister Сегр. Yanhers, HT.
Litton System |ng., Adiar-Westri
Commun. Cy, New Rochelle, Nr,
R=Trancis, Ine. Jamaica, N.Y.
Rubber Tech, Inc, Cardona, Calil.
Francis L. Moseley Faradena, Salil,
Microdat, ing, So. Pasadana, Calil,
Завеев Согр. Menargnach, N.Y,
Cais Carp. Redwood City, Galil,
Code
No,
ЕАК!
10821
9892
19978
3109
46113
39514
39707
EEL
19:44
19924
59942
19957
Model 42504
Address
Мати Гос! гг
General Mills Inc.,
Elachonics Div, Minneapolis, Minn.
Korth Hills Electonics, Inc. Glen Cove, N.Y,
Samicónducior Div, of Clevite Corp,
Wállham, Mass,
Witernatignal Electron:c
Research Coro,
Columbia Technical Сар, Maw York, N.Y,
Yaraan Associales Palo Alta, Calif.
Marshall Ind, Eleci. Products Dw.
San Mario, Calif,
Control Swileh Division, Cghtrale Co,
af Aneuca El Segunda, Calif,
Delevan Eleclionics Sop, East Aurora, WT.
Kilee Corporatian Indianapolis, Ind,
Renbrändt, Inc. Boston, Wess.
Hoffman Elacitómes Corp,
Semiconducie: Div,
Technclogy Instrument Corp,
cl Calif, Newhury Pars, Galil,
Burhans, Cali,
El Monte, Calil.
THE FOLLOWING H-P VENDQRS HAYE NU NUM-
BER AISIGNED IN THE LATEST SUPPLEMENT TO
THE FEDERAL SUPPLY CODE FOR WANUFAL.
TURERS HANDBOOK,
pana F
(00m
ocd 2
Q00AA
В004 В
1064 К
OCA
ODJMM
Horn
00999
00055
CD
body
Malco Tol and Die Los Angetes, Calil,
Western Col Civ, pi Apigmatic
Ind., Ing. Redwood City, Calil,
Willow Laaths: Products Carp, Newark, N.J1,
British Redio Electonics Lid.
Washington, 0,6.
ETA Englärd
Sremens-America
Components Dre,
Pracisipa Instrument
Components Ca.
Rubber Eng, & Development
АН" О Мур, Co
Coolio
Сенна! dl Elgin Welch Co.
Califmnia Enstern Lab,
5.К. бя ИМ Се.
White Plans, MN. Y.
Van Buys, Calif.
Hayward, Calif.
Saa lose, Calif,
Dakland, Calif.
Burbank, Calif.
Burlington, Calif,
Log Angeles, Calif,
From: FSC, Handbook Supplements
Hi] Dated DECEMBER 1961
Hi Dated MARCH 1967
02337-1
e a ade
da
Model 4260A
SECTION VII
MANUAL CHANGES AND OPTIONS
7-1. MANUAL CHANGES.
7-2, This manual applies directly to standard Model 4260A
Universal Bridges with serial prefix 601- or 602-, Table
7-1 lists instrument serial numbers and the changes required
to make this manual apply to these older instruments.
7-3. OPTIONS.
7-4, There are currently no options offered for the Model
4260A Universal Bridges,
Table 7-1, Manual Changes for Older Instruments
Section VII
Paragraphs 7-1 to 7-4
Complete
Serial No. Make Change Number:
601/602-00740 1, 2,3
and below
601/602 -00741 2, 3
thru -00840
601/602-00841 3
thru -01040
CHANGE 1:
Page 6-3, Table 6-1 and Table 6-2:
Delete 1205-0033: HEAT DISSIPATOR FOR Q201
CHANGE 2:
Page 6-10, Table 6-1 and Table 6-2:
Part number for R5 pulley waa 04260-3021, but 04260-5099
ls the preferred replacement,
CHANGE 3: For older instruments with serial number 601/602 -
01040 and below, the values listed in this manual are the
preferred replacements for the following parts:
Page 6-3: R103, R110, R111, A200, C207,
Page 6-4: R210, R213,
Page 6-8: R442, R453,
02337-2
T-1/7-2
ala.
EESTI
e! A
E
Frtar с;
Model 4260A
02337-1
SECTION Vill
CIRCUIT DIAGRAMS
8-1. INTRODUCTION.
8-2. This section includes the following:
a. General Notes for Schematic Diagrams (Figure 8-1).
b, Block Diagram (Figure 9-2),
с, Schematic Diagrams and part location illustrations,
Waveforms and voltages at indicated test points are also
included,
8-3. The Block Diagram or schematic diagrams can be un-
folded and used with any other portion of the manual,
Section VIII
Paragraphs 8-1 to 8-3
8-1
Section VIII
Figure 8-1
Model 4260A
|
Г
||
|!
Ld
eos fin] |
&
SYMBOLS SWITCH DESIGNATIONS
FRONT PANEL
REAR PANEL
KNOB CONTROL A3SIBR(2-1/2)
SCREWDRIVER ADJUST
MAIN SIGNAL PATH
FEEDBACK PATH АЗ5] SWITCH 51 WITHIN ASSEMBLY A3
CONDUCTING ELEMENT
WIPER MOVES TOWARD "CW" WHEN
CONTROL 15 ROTATED CLOCKWISE
B ZNO WAFER FROM FRONT
POWER LINE GROUND (A=15T, ETC}
CIRCUIT COMMON GROUND
TEST POINT
R REAR OF WAFER
(F=FRONT)
"AND" GATE
INHIBIT GATE
TERMINAL LOCATION [2% }
(2-172) (VIEWED FROM FRONT)
"OR" GATE
WAVEFORMS SHOWN ARE TYPICAL
REFERENCE DESIGNATIONS
REFERENCE DESIGNATIONS WITHIN ASSEMBLIES ARE ABBREVIATED.
ADD ASSEMBLY NUMBER TO ABBREVIATION FOR COMPLETE DESCRIPTION.
ASSEMBLY ABBREVIATION COMPLETE DESCRIPTION
А25 e" A25C1
AZ5A 1 CR! AZ25ATCRI
NO PREFIX J3 Ja
Assembly Stk. No, Assembly Series No.
Assembir Assembly (includes A254 1 [used to document
Number Name Assoinbiy) changes)
ee
pe , ay
A235 POWER SUPPLY ASSY(05100-6007) SERIES 330
~Al RECTIFIER ASSY
12 mounted an Rectifier (8100-6031) JT nor mounted
Assembis AIS | Assembly = = | an Asscmbly 425
Numbers radicafe Part of A25 '
Fins of J2 N
Le moy CRI WHT -ORN-GY REO | "3 168.3v
2 | pi Т + TO
| { 7 CGY 14 | ASPI(S)
1
| | с! | \
| | |2 le T Ql +6.3V supplied
5 + | from }3 to Pin 6
3 a GY N li BLK Pi
= 42 on
reanstorner_ A” | Axgombly 43
Terminal Cotrtectór AZ5A A]
Numbers I Î Pin Numbers i
8-2
Figure 8-1. Schematic Diagram Notes
02337-1
ETT = 1
OSCILLATOR)
O: INT-EXT J
r…------- = = = = = == = = т нон НН E A A A A НН НН НН НН НН НН НН НН НН НН TT
KHZ
INTERNAL
OSCILLATOR
ha нон нон он = ==]
DCY FOR
RESISTANCE
MEASUREMENT
FREQUENCY
SELECTOR
O [Funcrion]
| Cal
L PF
= == НЫ НН CEE TE RT SE
1
{DQ RESISTOR | > ——
Cp La
Bl
| CAPACITOR | >— —
---- “
r 1 2
I BIAS
| BATTERY | !
hee mm J >|
— МЫ ЗА ЕЦ лин. лин. вн. ин. ни. Em EE EE EEE EEE Ен БЕ EE
лин ны ли ны mm mn mr mm mmm mm mm wen mmm wm oR EEF EEE EEN WE ны SEE Sm Sm me Em Em SE сн ны ни кн г ны ня кн mms ee mms mh okie МЫ НН НН ПЕНЬ ЧР. и и. и ни и Н.Н
UNKNOWN —
COR ST
BRIDGE
NETWORK
COUNTER
zn zn all EEE BEN EN TE Rm mmm mmm Em EE mn Sn Sms Sm Sm Em Ee Ems mms mer ws ale НЫ
LOW
HIGH
IMPEDANCE
AMPL
DIFFERENTIAL
AMPL
= = к = === ты === НН 4
HIGH
IMPEDANCE
AMPL
LIMITING
AMPL
LIMITING
AMPL
SELECTED
INPUT
NETWORK
ERROR
SIGNAL
AMPL
FEEDBACK
PHASE
COMPARATOR
DIFFERENT
VARIABLE
RESISTANCE |e AMPLIFIER
CIRCUIT INTEGRAT(
MILLER
INTEGRATOR SWITCHING
REFERENCE GENERATOR ———
REFERENCE GENERATOR
MULTIVIBRATOR
L
UN pr
DETERS
DIFFERENTIAL
AMPLIFIER
= ——— — = — = = = = = = = = == = — = = = = o
I
|
1
| O SENSITIVITY
I
!
COUNTER |
0123 ı |
i
I
* |
SELECTED METER
J )
NETWORK CIRCUIT
ERROR
SIGNAL
AMPL >
FEEDBACK
|
IG ,
I
A
5
VARIABLE DIFFERENTIAL
—| RESISTANCE |e ALLER à ERASE,
CIRCUIT INTEGRATOR о
a
MILLER A ONE SH
INTEGRATOR > SWITCHING SHOT
A]
=
(EM a Da DR DD Be Be ala нее ное = = == ча mm ¡a = a e of]
= ad
NEON LAMP
DRIVER
== |
CIRECTION
INDICATOR
4200-01
Figure 8-2,
Section VIII
Figure 8-2
Overall Block Diagram
8-3
Section VIII Model 4260A
Figure 8-3
A100
8-4 02337-2
Gaz80-A 1%
D4zé0=-a-1#
ras = TE
Model 4260A
Le
|
- eee
pi po Mo ATINA n A EEN | м
En 1 i + di, ñ = re
IF 1 ОБЩЕЕ BE ETS a нуна Lea EE RT ETE PEE EE : я
| TB PTR bt e oe Br a tc HL re
Ll er ST
, uni co A
aie
НЫЕ Не ¿ Made E
abi i 5
1 ™ on N e mi a
FL oo us | i
Mu
A100
02337-2
AA A
r
|
r
1
L
EXT. OSCILLATOR |
1
FROM
AZ00(T)
FROM
A200(5)
7
REFERENCE DESIGNATIONS
NO
C 1-6 | CIGI-I05
CRI, 2
J 5-9
MI
RI-E6 RIOI-III R 601
53 S101, 102
TZ
Y6OI- 505
FROM
A400 (103
r
F
J
FROM
A200{L)
+
го | "С
LE
1
i
FROM
A200 (K)
FROM
A300 (9)
FROM
AXCOL7)
WHT-BLK
Cl
0.2
WHT-BLK-BRN
`
O
”
La
DO VERNIER
WHT-BLK-
A100 RANGE AND FUNCT
COPYRIGHT 1566 BY HEWLETT -
Section V
| TCH ASSEMBLY (04260-70211 _ _ Figure €
|
er ne FUNCTION $t02
| ms EY 1500 WHT-YEL | | Cs LOWD
| 2 | ce HISHO
|
b 3 | Cp AUTO
+ | M -
| 50-0-50MA a lr
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: BLK E Ls LOW Q т
| т Lp HIGH Q
|
| |
1 L = 2 —]]]—z]Io- za delle Не вые — ный
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© «А400 1)
FUNCTION a
| — 2 A400(2)
O 4 WHT-
prono naaa ana e poo --0 Ben
| сю!” | | ORN
SIOZF $1026 SIO2H s102J SIOZK ¡SI9A | | y O.024F 151018 SIOIC 51910 I TO
7 у --= = = == === 7 | or 1 >— r 200 (FP)
7 Fr ; / / I RI | WHT-
обес A oo | оО! | band e le | eo! Lao RED
o y o 4 o - 2000 qu 2 2 | Dés
Oz -
524 + oe 3 co 3 IQ 3 3 O
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: |
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+ o 0— o—+ of foo 3 + !
7 7 7 7 7 RICE RIOS RIOT 7 7
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= ‹ RIOS | RIOS
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| — |
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‘
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т Pc т- | 136. WHT-RED-YEL a FROM
15102я | 51025 151927 SIO2U Isicey Do ASOCIA
| | WHT-RED- ORN | I FROM
— ju == —_— —
| | | | | | i | 35 T _ 2 I _ T 4400113)
| OL ole Lo + | Lote o FROM
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3 50K |
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5 5 5 5 —= ALI аа
— o A 100 TEC DECIMAL POINT AND DIRECTION INDICATOR
ol + 084 o & 6 ASSEMBLY {04260-7026
7 7 7 7
Сун oy o 53E EXT) WHT- RANGE SICH
Ï WHT- RED -ORN © 4-74 RED ro ii Tel3lalsTel|r
59 Гат AZ0OLP? UF | UF [UF | nf | oF | oF | oF
| WHT-RED-YEL _ E—
134 A 400 (15) A | RR | 4 |x| kt | EC | ME
WHT-GAN-VIO _ 10 UH | mk | mH |mH| H | н | н
31 A400{8)
AT GAN OY = то NOTES
A 400(9} |. UNLESS OTHERWISE INDICATED:
RESISTANCE IN OH
CAPACITANCE IN PICOFARADS
2. ASTERISK (#) INDICATES SELECTED
- COMPONENT, AVERAGE VALUES SHOWN
ARD COMPANY GAZE -D-24
Figure 8-3, Range and Function Switch Al
Decimal Point and Direction Light A6
8-5/8
Model 4260A
@ +2 TO +13:5vDC
O -1 TO -12.5vDC
@ +95 TO +115VDC
SWEEP SPEED
200us/cm
AMPLITUDE
V/cm
A200
МОЧЕ
=
o
=
pee
mm
= тт
pe
E
02337-1
S|
Re PN
| О l 1 X dA
| i nod
daa
y >
FI
» ОЛА SB
7 7 MHT-BLK-GY
4 €
= „ДВК
- a
/!'WHT-GY =
No?
15/2530 VAL
50 TO 60Hr
NOTES
I. UNLESS OTHERWISE INDICATED:
RESISTANCE IN CHMS
CAPACITANCE IN PICOFARADS
REFERENCE DESIGNATIONS
NO
PREFIX A200
C201-214
CR201-207
Fl
Ji,
Q201-207
R201-220
51-3
т!
wi
COPYRIGHT 1966 BY HEWLETT-PACKARD COMPANY
—_— Er hl JU
—
R204
_580
|
I
| CRZOI
VIS е< >
Ne
#2VAC R20 185470
CR202 6800 DRIVE
¢c &——+4 82014 Ce
VIO 2700$ Q203
1854-0071
CONTROL
AMPLIFIER
| cèor L+
L SOQUF T- 1
OO CR203
| 2ОНЕ” y
vIO-
WHT 4 à € +
Ny Ry
BRM / . e
} “HE
_ CRE
18 VAC wr £204 DE
+ 2004F R205
| CR204 4700
Fa J € ; APN
BRN N
Q204
854-0071
REGULATOR
CR206 OS
BLU M€ pi AP ae
*Leca06 <RZ06
35VAC | -Tioour 322K
Loud
BLU SS
en “Нео?
“Ae »
c207 L+
asvac | 228FT- |. [KHz OSCILLATOR
NE
ORNS
| À
a
|
| R217 ¢
в220 $ + Lena | 2000% R215
—T 20uF 1800
M
R218 & C2lg +
56K 5 LQUF T=-
cela Lt
| 20UF T-
Y 0207
1854-0071
$ a R212 &
| al |
4
¢
A
VER SUPPLY AND KHz OSCILLATOR ASSER
——— TN A
MBLY (04260-87023 _
R204
660
TN
Q201 '
1854-0003
REGUL LATOR
> Q202
R20 1954-0071
DRIVER
19 TO REF VOLTAGE ASSY
| FWHT-ORN + A30012)
+13v TO DET assy .
C AT WHT-ORN * A900(
WHT -ORN
+1 c203 |
20UF I
> EX “ BLK
T9 REF ‚VOLTAGE ASSY
| WHT-Y10
- —|2v À DE ASSY
WHT-Y1Q = 1400 (3)
CREDA и
J)iz7v o WHT-vIO
Ree _ TO CRL LIGHTS A600( 11
4700 abe £205 WHT - REC- BLU
AAA + T 20LF SN
0204 du WHT-RED-BLU
nn Y | TO DET ASSY A400 il)
L
Ne NWHT-BLK-BLU y
ROT #77 I
1900 +40v TO
A. + 40V SL WHT-BLICRED, TWev.s
AIQO (IN
RZ06
HK
i +110V TO
WHT-RED y SWITCH
Alco (3)
© (EXT,
+110V Sp Oe WHT-RED-ORN FLOY TO
EDO Cria AlOO(39)
RED 4 _INT_
| — —ir НН
| КН: OSCILLATOR ` sic | © re
+13V NN оО
M7 WAT-* e WHT-ORN
ORN- I L INT A
SOK
Ay I
R2IT © | |
| са | 26005 RZI5 Am CIO | |
TT 20ÛF 1800 $ 214 4700
ih q 270K +_ czo8 |
7} 0206 | -T hour
- < R208
& Cala L+ SU 1854-0071 $ 35K WHT. 1 [e TO T20)
Ko LOUF | = BRN- | Is
a ” GRN
1 >» 87 i
— Q207 ' = | | EXT, OSCILLATOR]
185470071 | —
ат $ Ros
JL * 30K | " i
5 LE | + C209 | ' |
< re R213 REID E [4700 |
20K > $REIZ Rell < NK > |
| > 1200 5100 = | 528
| WHT- Fr
й BLU- [ o LE T j
-|2v VO 0-0 WHT-wIC
0205 SN Г. NT 4260-00-34
| 1854-007] po INT
: Ï
==="
| 9 — | L E*T_;
| Eh ar — TD T2(2)
| _j S3A INT]
Section VII
Figure 8-4
Figure 8-4. Power Supply and 1 kHz Oscillator A200
8-7
Section VIII
Figure 8-5
Model 4260A
|
| :
A300 E
|
| 8-8 de
|
| |
Model 4260A
OSCILLOSCOPE SETTINGS
EST FUE VERTICAL HORIZONTAL
EW 00 20 mV/cm (use 10 probe)
2mV/cm (use IO!! probe)
© O 20 mV/cm Noh e 200 |5 /ст
200 0.5 V/em :
00 2V/em
5V/cm
COMMON WAVEFORMS:
FIGURE 8-4 (IkHz OSCILLATOR),
SEE PAGE 5-12 FOR MEASUREMENT PROCEDURE.
02337-2
Од2во= С - 1
A300 REFERENCE VOLTAGE ASSEMBLY (04260-8703
-12V FROM WHT- | HIGH IMPEDANCE DIFFERENTIAL LIMITING
POWER ую ит - l2v ” AMPLIFIER №9.“ ” AMPLIFIER — 777 AMPLIFIER
SUPPLY N_N
А200 (Е) + ve
750
> R34 R323
+13\ FROM WHT- >
POWER ORN ¿7.7 + 13V 4 5600 6800
>. SUPPLY ex R3I9 © < R309 < R32
6BK 2 1306 4 220K 222K
! 1854-0071 Q 305
INPUT No elek 0 КР
FROM ES € Г: А 4 , у
SWITCH > C307 1 CRBONÍC
A100 (24) | LF R316 = R3l3£ wloagn™® 0303 c309 R302
ARI 200 ¢ 25 7 1854-0071 LOHF
|
\
| + RIN R310
C308 == 1500 1500
т o
$ R3I7 $ R315 q 304 $ #322
#13kK < (200 1854-007] « 6800
cal ЛЕТО |
SouF | - A
BLE. € -12v
1 NN
| R302
| 750
L
= R 306 -
$ 5600
$ R3I03
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I 1853 -0010 Jour
Q 30]
| |
o 1954-5071 o CR303[CR 304
INPUT Пак VY [our 8200 (Y
FROM \ rd 7 Éd “+ A y yp £200 Q 309
WHT- N° ON A ih It VV - - 1854-0071
Alco tio, — AN En
|
LOUF SR304 R308 he zy a Q 308 R328
+ АТК COUUF 1354 - 0071 270K
+ - yyy
C302 =* — .
| SOUF C303 + |
| SR305 47LF $ R397 o c34 TT _ 2"
«13K £1200 ROLE ve
\ HIGH IMPEDANCE ; + LIMIT ING
77 AMPLIFIER HNO, 2 AMPLIFIER NO 2
o ——]—]—]——]]__—]_—_—_———T];———;—;—— E EEE —]]];—]]]];—;—;—;—;—;—];—;—];]]6oU]]— Eek
= o ———
LIMITING MILLER SWITCHING |
LIFIER NO, | > ” INTEGRATOR * “ CIRCUIT >>
|
te + |3V |
R323 $ |
of -
68003 Ф ЗК 1
Cal? 1 > 5
í LOMF /
LE
+
£30
LOLF R344
“yt © SEK
MN
TRIO QG 307 1
E 1854-0071 ca - 0313 l
Rad “2200 1654-0071
Nha,/7 03/2
1854 - 0071
€ R336 € RI40
*6800 $ 2400 A343
==+ <R324 cig m+ 3 |
F T- $2700 Sour | - +300
5 R339
$ 3600
-0
—- + | y
$ R335
2 R329 7 5200
5 6800
C345
LOUF O
SH, CR308 | R337
у = =
306 IX, ) I
C36 |
ОЕ
Q 311
CR307 Q 310 1854-0071
1854-0071
Rasa
309 5500
"0071 R33I$ LEER 2R338
5600 > 24700 > 3000
-12Y
< R332 |
$ 1200
< R330
$ 2700
, \ PHASE ,
COMPARATOR
Section VII
Figure 8-5
© OUTPUT
i TO
DETECTOR
ASSY
A4O0 (12)
NOTES
|. UNLESS OTHERWISE INDICATED:
RESISTANCE IN OHMS,
CAPAC| TANCE IN PICOFARADS
2. ASTERISK (%) INDICATES SELECTED
COMPONENT, AVERAGE VALUES
SHOWN
REFERENCE
DESIGNATIONS
A 300
C 301 - 319
CRIOI- 308
G 30! - 35
R 301 — 345
COPYRIGHT 1986 BY HEWLETT - PACKARD COMPANY
G4Z80- 0-44
Figure 6-5. Reference Voltage Assembly A300
0-9
Section VII Model 4260A
Figure 8-6
url Hm AH Tu
=: " mm
A400
8-10 02337-1
Model 4260A
@ 10 © @ 53 To 6.1voc -
anos OSCILLOSCOPE *:
| VERT=2V/cm
HORIZ = 200jus/cm
|
‘ |
E) AnD © 2,3V
+1.3V TO -0.4V BIAS | 1.9V
RANGE FOR CR419 i
AND CR420 © LV pe
|
DC VOLTAGE DIFFERENCE |
BETWEEN (O) AND €) or
O an O) Is LESS THAN
I
lOmV WHEN BRIDGE IS AMPLITUDE ENVELOPE
BALANCED €) SEE PARAGRAPH 5-50
|
48V |
@ лю © ©
A. CRL DIAL 0.2%
HIGH FROM
BALANCE AA
B. POLARITY RE- |
VERSED WITH
CRL DIAL 0.2%
LOW © sev_!
OSCILLOSCOPE * :
VERT =.1V/cm
HORIZ = 200us /em a
|
|
BRIDGE
BALANCE
“SEE FIG 8-4 (IkHz OSCILLATOR) FOR COMMON WAVEFORM SETTINGS.
SEE PAGE 5-12 FOR MEASUREMENT PROCEDURE.
2337-2
4260 A 20
A400 DETECTOR ASSEMBLY (04260-7024)
V FROM | 7 ERROR SIGNAL AMPLIFIER
-1 A
al
POWER SUPPLY 3 -12y
A200 (F) WEHT- >> Ré
vIO $RA404 £R407 $RADA ЭН $ RAIZ 27
$470 $8200 ISK e [OK $ 8200
в402% À
27K > Treo CR402 ÇR 404 +, 0404
POWER SUPPLY Ça € +13V C408 ]
А200 (0) WHT - 7” 20 LF
i ORN Q 40 0403 CR403 CR 40%
1854-0071 Ns 854-0071 _
/Р Y RAIZ Rala Ш
FROM L к Q402 $ RAID _ISK 20K | ©
SWITCH | Ty 1853-0010 > 300K rw rw | x
\
AIOO (14) Cho Nba, Nba, R415*# N
- ue sr T1
ı C405 C407
OILF „ОНР
| Арт I Е + +
R405 + AL
R403 < R406 à 22k L L Ana 4ne7* | —TJésto -T Sour
ak $ I00K J $ ktcana Tess $00K | - [ROLF
jRa0g | — IOHF ad c406 | *
В CR401 | 00K Lou
— 12V e 3.1 12V = OF
1 BLK NTN A
' VARIABLE DIFFERENTIAL AMPLIFIER
| / RESISTANCE CIRCUIT NOA MILLER INTEGRATOR — —
о” AN . - + {34
EZ 2 RA
RAGES RAS! $ 33
Q 412 620 + 2700 ®
1834-9071 $ R442
— | Q 410 | ся
oJ © Q415 1854-0071
ERAIÓ [ar 1954-0003
83
F
| 0414 CR4I7 4
1854-0071 CR418 © R445 Q409 „© С
N \ 00K 1654-0071 SN
| , — AAN
R436
a -0 4300 ¿na
-— > 33
4
R448 | „” Q all GR 42 Q 408
| 620 $ © 1854-007! Je sv RAY 1854-0071
| R449 R450 4 R447 R444 +
; > CA20
580 [20 +620 6900; ed IOUF ERY
FROM WHT-
GRN è + 4
SWITCH VIO 7.7
ADO (31) <a e
Lal
FROM — 9
бобы AEA
GY |
| R424 Ra26 €
« <
270K $ 9100 $ O ©
x rd
car ;
FROM REF VOLTAGE "0m 3 OR a
ASSEMBLY
AJO US) 12 —e
care Nba, RCRA CRAIC
Sl
+10 FROM |5
LEAN
SWITCH wh: R457 © one oo
AIOG{34) YEL IBOK >
4 RASE
TO CRL WHT-CRN-SLU rase L $ 240K
A600 (5) у 820K 3
| BLK Их +
FROM =
PWR SPLY
A ZOO {N) wn
BLU —— ÔNE SHOT MULTIVIBRATO
Section VIII
Figure 9-6
\-7024] — 2 a En NOTES
e +13V | |. UNLESS OTMERWISE INDICATED:
| i RESISTANCE IN OHMS:
28418 Rap Cara | CAPACITANCE IN PICOFARADS;
4 200 204F CR 408 INDUCTANCE IN MICROHENRIES
YM TA 2. ASTERISK {%) INDICATES SELECTED
COMPONENT, AVERAGE VALUES
404 A SHOWN
4-007| 20
ы 9405
18 - TI
| N TO
2 2 SWITCH A100 (15)
“ BRN-
1 В ORN
1% C415
cale R4ËZ Saif cRaûs
QI UF 1200 ‚=
© ASS 5 |+
al He I
FA
у.
тс TRH
DOUF 1 < R423 +
$ 2700 "TE pu
1 CR406 |CR407 ЗОНЕ
53D
WHT- raz
, BRN- о EXT I
N FO
7 57 LNT
> 7 WHT-BRN-GY
7
/ PHASE DETECTOR ` |
R7
R433 R436 € | E
533K зак © | weT- Г реет
BRN- | (DETECTOR)
4 R430 YEL CT
$ 3000 7 Pe 294 BLK
Y CRA © crala MA -
1500 `` &R445
AAN d AN $ 4300
© R437
y" Y CRAIS - 1500 A CRAIS | REFERENCE DESIGNATIONS
+ L e RAI RAA l NO A
R436 | Td $3000 pA PREFIX 400
4300 2R434 R435 <4 4300
S 33K 339 C 401-422
СЯ 401-421
J 10
A" L 40
O 0 401-418
RT А 401 - 458
83
t
|
77 о S3F
WHT-F 2251
J C SRN- LEXT $
10 о—0 88 ———» TO RANGE SWITCH
FA WHT- UAT AICO (29)
e +13V CRN - LIST 4
;R427 , ,
2454 € RAS
O $ 9100 $5600 3 100K
\ R428 $ <R429 !
› 360K* e 270K ;
cale a
NN 4700
IE в
СВАО ( 0418 COPYRIGHT 1966 BY HEWLETT - PACKARD COMPANY
1854-0022 a
Q 407 Q 417 daîéé-b-8
1854-0071 + * 1854 - 007! |
2 1455 Q 416 _m Gag
4 2200 R453 $ 1054-007! 2euF ,
SEK |
-12\ | ©
513 ‚
> TO CRL LIGHTS AGOCÍ7)
> e TO CRL LIGHTS A6DO(6)
ULTIVIBRATOR — — NEON LAMP DRIVER — “— DIFFERENTIAL AMPLIFIER — }
—)uo l o6 1 a ————— — —AÚO Sqae e o — o — | =
Figure 8-6, Detector Assembly A400
8-11/8-12
3
UNITED STATES
ALABAMA
Р.0. Вох 4207
2003 Byrd Spring Road S.W.
Huntsville 35807
TWX: 510-579-3504
Tel: (2057 881-4591
ARIZONA
3009 North Scottsdale Road
Scottsdale 45251
Tel: (602) 945-7601
TWX: 910-950-1282
232 South Tucson Boulevard
Tucson 95716
Tel: (602) 623-2564
TWX: 910-952-1162
CALIFORNIA
3938 Lankershim Boulevard
North Hollywood 91604
Tel: (213) 877-1282
TWX: 910-499-2170
1101 Embarcadero Road
Palo. Afto 94303
Tel: 415) 3727-6500
TWX: 910-373-1280
2551 Carlsbad Avenue
Sacramento 95321
Tel: (916) 482-1463
TWX: 910-367-2092
1055 Shafter Strest
San Diego 92108
Tel: 1714) 223-8103
TWX: 910-335-2000
COLORADO
7965 East Prentice
Englewood 80110
Tel: (303) 771-3455
TWX: 910-935-0705
CONNECTICUT
ROE Tolland Street
East Hartford 06108
Tel: (203) 280-9363
TWX 710-425-3418
111 East Avenue
Norwalk 06851
Tel: (203) 853-1251.
TWX; 710-458-3750
DÉLAWARE
3941 Kennett Pike
Wlimingtan 19807
Tel: (302) 655-5161
TWX: 510-666-2214
CANADA
BRITISH COLUMBIA
Hewlett-Packard (Canada) Ltd.
2184 West Broadway
Vancouver
Tel: (604) 738-7520
TWX: 610-922-5050
CENTRAL AND
ARGENTINA
Mauricio À. Suárez
Telecomunicationes
Carlós Calvo 224
Buenos Aires
Tel: 30-5312, 34-9067
BRAZIL
Ciental, Importacée e
Comércio Ltda,
Rua Cleto Campelo, 44 - 5° andar
Recifa
Ciental, Importacio e
Comércio Ltda.
Avenida 13 de Main, 13-22* andar
Rio de Janélré, 6.B,
Clentai, Importatäo e
Caméreld Ltda.
Rua Des. Eliseu Guilherme, B2
530 Paulo 8
Tel: 70-2318
FLORIDA
Suite 106
959949 MN.E. 2nd Avenue
Miami Shores 33138
Tel: (305) 758-3626
TWX: 210-848-7267
PO. Box 20007
Herndon Station 32814
621 Commonwealth Avenue
Driarido
Tel: (305) 841-3970
TWX: 810-850-0113
Р.О. Вох 8128
Madeira Beach 33708
410 150th Avénue
St. Petersburg
Tel: (813) 391-0211
TWX: 810-863-0366
GEORGIA
3110 Maple Drive N.E.
Atlanta 30305
Tel: (404) 233-1141
TWX: 810-751-3283
ILLINOIS
5500 Howard Street
Shokie 60076
Tel: (312) 677-0400
TWX: 910-223-3613
INDIANA
4002 Méadows Drive
Indianapolls 45205
Tal: (317) 546-4891
TWX: 810-341-3263
LOUISIANA
P.O, Box 856
1942 Willlams Boulevard
Kenner 70062
Tel: (504) 721-5201
TWX: B10-955-5524
MARYLAND
6707 Whitestone Road
Baltimore 21207
Tel: (301) 944-5400
TWX: 710-852.0850
P.O. Box 727
Twinbrook Station 20851
12302 Twinbrock Parkway
Rockville
Tel: (301) 427-7580
TWX: 710-828-9634
ONTARIO
Hewlett-Packard (Canada) Ltd.
880 Lady Ellen Place
Ottawa 3
Tel: (613) 722-4223
. . TWX: 610-562-1952
MASSACHUSETTS
Middlesex Turnpike
Burlington 01803
Tel: (617) 272-8000
TWX: 710-332-03R7
MICHIGAN
24315 Northwestern Highway
Southfield 48076
Tel: (313) 353-9100
TWX: 810-232-1532
MINNESOTA
2459 Unlversity Avenue
5t. Paul 55114
Tel: (517) 646-7881
TWX: 910-563-3734
MISSOURI
0208 Wyoming Place
Kansas City 63114
Tel: {816} 333-2445
TWX: 910-771-2087
2812 South Brentwood Blvd.
St. Louls 63144
Tel: (314) 644-0220
TWX: 910-760-1670
NEW JERSEY
Crystal Brook Prof. Bldg,
Route 35
Eatontown
Tél: (201) 747-1060
391 Grand Avenue
Englewood 07531
Tel: (201) 557-3933
TWX: 710-891-9707
. NEW MEXICO
Р.О. Вох 8366
Station C 27108
6501 Lomas Boulevard N.E.
Albuquerque
Tel: (505) 255-5566
TWX: 810-885-1665
156 Wyatt Drive
Las Cruces 88001
Tel; (505) 526-2486
TWX: 510-883-0550
Hewlett-Packard {Canada} Lid.
1415 Lawrence Avenue West
Toronto
Tel: (416) 749-9196
TWX: 610-402-2382
SOUTH AMERICA
CHILE
Héctor Calcagni
Caslita 13942
Santiago
Tel; 490.505, 393, 119
COSTA RICA
Lic, Alfredo Gallegos Gurdián
Apartado 3243
San José
Tel: 21-86-13
EL SALYADOR
Electrénica
Apartado Postal 1589
San Salvadar
Tel: 4683
GUATEMALA
Olander Associates Latin America
Apartado 1226
7a. Calle, 0-22, Zona 1
Guatemala City
Tal: 22812
MEXICO
Hewlett-Packard Mexicana,
S.A de CY
Eugenia 408, Dent. 1
Mexico 12, D.F.
NICARAGUA
Roberto Terán G.
Edificio Terán
Apartado Postal 689
Managua
Tel: 3451, 3452
NEW YORK
1219 Campvllle Road
Endicott 13760
Tel: {607} 734-0050
TWX: 510-252-0890
236 East 75th Street
New York 10021
Tel: (212) 879-2023
TWX: 710-581-4376
82 Washington Street
Poughkeepsie 17601
Tel: {914} 454-7330
TWX: 510-248-0012
39 Saginaw Drive
Rochester 13623
Tél: (716) 473-9500
TWX: 510-253-5961
1025 Northern Boulevard
Roslyn, Long Island 17576
Tel: (516) 869-8400
TWX: 510-223-0811
5858 East Molloy Road
Syracuse 13211
Tel: (315) 454-2486
TWX: 710-541-0482
NORTH CAROLINA
P.O. Box 5187
1923 Nurth Main Street
High Point 27252
Те!: (919) 882-5873
TWX: 510-926-1516
QHIO
557% Pearl Road
Cleveland 44129
Tel: (216) 584-8208
TWX: RI0-421-B500
1250 West Dorothy Lane
Dayton 45406
Tel: (513) 298-0381
TWX: E10-459-1925
OREGON
2737 SW. Corbett Avenue
Portland 97201
Tel: (503) 228-5107
PENNSYLVANIA
Park Place Office Bullding
Camp HI
Tel: (717) 737-6791
QUEBEC
Hewlett-Packard (Canada) Lid.
275 Hymus Boulevard
Pointe Claire
Tel: (514) 697-4232
TWX: 610-422-3022
Telgx: 01-2813
PANAMA
Electrónico Balboa, S.A,
Р.О. Вох 4929
Panama City
Tel: 3-0833
PERU
Fernando Ereta B.
Av. Petit Thouars 4718
Casilla 3061
Lima
Tel: 50345
PUERTO RICO
San Juan Electronics, Inc.
Ponce de León No, 150, Stan 3
Pta. de Tierra Sta.
San Juan
Tel: (805) 725-3342
££ ELECTRONIC INSTRUMENTATION SALES AND SERVICE
UNITED STATES, CANADA, CENTRAL AND SOUTH AMERICA
Monroe Complex
Moss Side Boulevard
Manroeville 15146
Tel: (412) 271-0724
TWX: 710-797-3650
144 Elizabeth Street
West Conshohocken 1242R
Tel: 215) 248-1600, 828-6200
TWX: 510-660-3715
TEXAS
P.O. Box 7166
3605 Inwood Road
Dallas 75209
Tel: (214) 357-1881
TWX: 910-861-4081
P.O. Box 22813
4247 Richmond Avenue
Haustan 77027
Tel: (713) 667-2407
TWX: 910-881-2645
GOVERNMENT CONTRACT OFFICE
225 Billy Mitchell Road
San Antonio 78226
Tel: (512) 434.4171
TWX: 910-871-1170
UTAH
2830 South Maln Street
Salt Lake City 84115
Tel; (801) 486-8166
TWX: 910-325-3681
VIRGINIA
PO, Box 6514
2111 Spencer Road
Richmond 23230
Tel: (703) 782-5451
TWX: 710-956-0157
WASHINGTON
11656 N.E. Eighth Street
Bellevue 98004
Tel: (7206) 454-3971
TWX: 410-443-2303
FOR AREAS NOT
LISTED, CONTACT:
Hewlett-Packard
1501 Page Mill Road
Palo Alto, California 24304
Tel: (415) 326-7000
TWX: 910-373-1267
Telex: 34-8451
FOR AREAS NOT
LISTED, CONTACT:
Hewlett-Packard Inter-Americas
1501 Page Mill Road
Palo Alta, California 94304
Tel: (418) 326-7000
TWX: 910-373-1267
Telex: 034-8461
Cable: HEWPACK Fala Alto
VENEZUELA
Cltec, С.А,
Edif. Arizan-0f. +4
Avda. Francisco de Miranda
Apartado del Este 10934 Chacaito
Caracas
Tel: 71.88.05
FOR AREAS NOT
LISTED, CONTACT:
Hewlett-Packard Inter-Americas
1501 Page Mill Road
Palo Alto, California 94304
Tel: (415) 326-7000
TWX: 910-373-1267
Telex: 034-2461
Cable; HEWFACK Palo Alto
12/66
= ELECTRONIC INSTRUMENTATION SALES AND SERVICE
EUROPE, AFRICA, ASIA, AUSTRALIA
ROPE
RÍA
dr HmbH
rechaffliche Instrumente
"hardtgasse 6,3
ox 43
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№ 181
IU
Packard Benelux S.A.
or de "Нара!
‚ 22 20
ARK
sen AS
ade |
hagen Y
- 48 00
ND
Y
linkatu 11
Ix 10153
1 10
133
:E
Packard France
He d'Or
- Rhine
35 65
«Packard France
Wievard Massena
3
B
# 97 18
GERMANY
Hewlett-Packard Vertriebs-GmbH
Lietzenburger Strasse 30
1 Berlin W 30
Tel: 24 86 36
Hewlett-Packard Vertriebs-GmbH
Herrenberger Strasse 110
703 Böblingen, Wüurttemberg
Tel: 6971
Hewlett-Packard Yertriebs-GmbH
Achenbachstrasse 15
4 Disseldarf 1
Tel: 68 57 58
Hewlett-Packard Vertriebs-GmbH
Kurbessenstrasse 95
6 Frankfurt 50
Tel: 52 00 36
Hewlett-Packard Yertriebs-GrbH
Beim Strohhause 26
2 Hamburg 1
Tel: 24 05 57
Hewlett-Packard Yertriebs-GmbH
Reginfriedstrasse 13
8 Munich 9
Tel: 42 51 21
GREECE
Kostos Karayannis
18, Ermou Street
Athens 126
Tel: 230 301
HCA, ASIA, AUSTRALIA
ALIA
Electronics (Vic) Pty. Ltd.
fair Street
£5.£ 6
M, Victoria
1371 (4 lines)
Electronics
Y.) Pty, Ltd.
Street
lew South Wales
5338
ЧА
Salespower & Agency
Lid., Co.
[ 718
на
90
htific Instrument Co, Li
dur Sapru Road
1
1
atlfic Instrument Co., Ld
Dadabhai Naoroji Road
1
1642
The Scientific Instr. Co, Ld.
11, Esplanade East
Calcutta 1
Tel: 23-4128
The Scientific Instrument Co., Ld.
30, Mount Road
Madras 2
Tel: 86436
The Scientific Instrument Co., Ld.
B-7, Ajmer Gate Extn.
New Delhi 1
Tel: 27-1053
IRAN
Telecom, Lid.
Р. 9. Вох 1812
Teheran
Tel: 43850, 48111
ISRAEL
Electronics & Engineering
Division of Motorgla !srasl Ltd.
16, Kremenetskl Stregt
Tel-Aviv
Tel: 35021/2/3
Pa ra een
IRELAND
Hewlett-Packard Ltd.
224 Bath Road
Slough, Bucks, England
Tel: Slough 28406-9, 29486-9
ITALY
Hewlett-Packard italiana S.p.A.
Viale Lunigjana 45
Milan
Tel: 69 15 84
Hewlett-Packard !tallana S.p.A.
Palazzo italia
Piarza Marconi 25
Rome - Eur
Tel: 591 2544
NETHERLANDS
Hewlett-Packard Benelux, MV,
de Boelelaan 1043
Amsterdam, 7,7
Tel: 42 77 77
NORWAY
Mórgenstlerne E Co. A/S
Ingenidfirma
6 Wessels Gate
Oslo
Tel: 20 16 35
JAPAN
Yokogawa-Hewlett-Packard Ltd.
Shinhankyu Building
No. E, Umeda
Kita-ku, Osaka Clty
Tel: 313-0091
Yokogawa-Hewlett-Packard Ltd.
Ito Buliding
No, 5%, Kotorl-cho
Nakamura-ku, Nagoya City
Tel: 551-0215
Yokgawa-Hewlett-Packard Ltd,
Ohashi Building
No. 59, |-chome, Yoyogi
Shibuya-ku, Tokyo
Tei: 370-2281
KENYA
R. J. THbury Ltd,
Р. О. Вох 2754
Sulta 517/518
Hotel Ambassadeur
Malrobi
Tel: 25670, 26803, 68206
KOREA
American Trading Co., Koraa, Ltd.
Seoul Р. 9. Вох 1103
112-35 Sokong-Dong .
Jung-ku, Seoul
Tel: 3.7049, 3.7613
PORTUGAL
Telectra
Rua Rodrigo da fonseca 103
P.O. Box 2531
Lisbon 1
Tel: 68 60 72
SPAIN
Ataio Ingerleros
Urgel, 259
Barcelona, 11
Tel: 230-69-B8
Atzio Ingenieros
Enrique Larreta 177
Madrid, 16
Tel: 235 43 44
SWEDEN
HP Instrument AB
Hagakersgatan 7
Milidal
Tel: 031 - 27 68 00
HP instrument AR
Centralvägen 28
Solna
Tel: 08 - 83 08 30
LEBANON
Constantin E. Macridls
Clemenceau Street
Clementeau Center
Eeirut
Tel: 220845
NEW ZEALAND
sample Electronics {N.Z.} Ltd.
& Matipo Street
Onehunga SE. 5
Auckland
Tel: 667-356
PAKISTAN (EAST)
Mushko & Company, Ltd.
Zirat Chambers
31, linnah Avenue
Dacca
Tel: B0058
PAKISTAN (WEST)
Mushko & Company, Lid.
Uosman Chambers
Victoria Road
Karachi 3
Tel: 51027, 52927
SOUTH AFRICA
F. H. Flanter & Со, {Pty.), Ltd.
Rosella House
Buitencingle Street
Cape Town
Tel: 3-3817
SWITZERLAND
HEWPAK AG
Zuricherstrasse 20
8952 Schlleren
Zurich
Tel: (051) 98 18 21
TURKEY
Telekom Engineering Bureau
F.0. Box 376 - Galata
Istanbul
Tel: 48 40 40
UNITED KINGDOM
Hewlatt-Packard Ltd,
274 Bath Road
Slaugh, Bucks
Tel: Slough 28406-9, 29485-0
YUGOSLAVIA
Belram S.A.
83 avenue des Mimosas
Brussels 15, Belgium
Tel: 35 29 58
FOR ARÉAS NOT
LISTED, CONTACT:
Hewlett-Packard S.A.
54 Route des Acacias
Geneva, Switzerland
Tel: (022) 42 81 50
Telex: 2.24.86
Cable: HEWPACKSA Geneva
F. H. Flanter & Co. (Pty.), Ltd.
104 Pharmacy House .
BO Jorissen Street .
Braamfontein, Johannesburg
Tel: 724-4173
TAIWAN
Hwa Sheng Electronic Co, Ltd.
P. 0, Box 1558
21 Nanking West Road
Taipel
Tél: 46076, 45936
THAILAND
The International
Engineering Co., Lid,
PF. O, Box 39
514 Sukhumvit Road
Bangkok
Tel: 913460-1-7
FOR AREAS NOT
LISTED, CONTACT:
Hewlett-Packard Export Marketing
1501 Page Mill Road
Palo Alto, California 94304
Tel: (415) 326-7000
Telex: 034-8461
Cable: НЕМРАСК Pala Alto
12/66
= кон. — в сект на т
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