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This manual contains copyrighted material prepared by the Hewlett-Packard Co.

TM 11-6625-1614-15

TECHNICAL MANUAL

HEADQUARTERS

DEPARTMENT OF THE ARMY

No. 11-6625-1614-15)

A S H I N G T O N

, DC, 28 August 1 9 6 7

ORGANIZATIONAL, DS, GS, AND DEPOT MAINTENANCE MANUAL

HEWLETT–PACKARD ELECTRONIC VOLTMETER

MODEL 410C

(NSN 6625-00-969-4105)

Section

GENERAL

1-A.1.
1-A.2.
1-A.3.
1-A.4.
1-A.5.
1-A.6.
1-1.
1-4.

INFORMATION -------------------------------------------------------------------------------------------

Scope --------------------------------------------------------------------------------------------------------
Index of Publications ------------------------------------------------------------------------------------
Maintenance Forms, Records, and Reports ---------------------------------------------------------
Reporting Errors and Recommending Improvements --------------------------------------------
Reporting Equipment Improvement Recommendations (EIR)---------------------------------
Administrative Storage ----------------------------------------------------------------------------------
Description -------------------------------------------------------------------------------------------------
Accessories Available ------------------------------------------------------------------------------------

INSTALLATION ----------------------------------------------------------------------------------------------------------

2-1.

Inspection ---------------------------------------------------------------------------------------------------

2-3.

Installation -------------------------------------------------------------------------------------------------

2-5.

Rack Mounting --------------------------------------------------------------------------------------------

2-9.

Three - Conductor Power Cable ----------------------------------------------------------------------

2-12.

Primary Power Requirements --------------------------------------------------------------------------

2-14.

Repackaging for Shipment ------------------------------------------------------------------------------

III

OPERATION ---------------------------------------------------------------------------------------------------------------
3-1.

Introduction ------------------------------------------------------------------------------------------------

3-3.

Adjustment of Mechanical Zero----------------------------------------------------------------------

3-5.

Front and Rear Panel Description ---------------------------------------------------------------------

3-7.

Operating Procedures ------------------------------------------------------------------------------------

3-9.

DC Voltage Measurements (Figure 3-2)-------------------------------------------------------

3-11.

DC Current Measurements (Figure 3-3)-------------------------------------------------------

3-13.

AC Voltage Measurements (Figure 3-4) -------------------------------------------------------

3-15.

Precautions When Measuring AC Voltage ----------------------------------------------------

3-28.

Negative Pulses --------------------------------------------------------------------------------------------

3-31.

Measuring Resistance (Figure 3-7) --------------------------------------------------------------------

3-33.

Measuring DC Nano-Ampere Current (Figure 3-8) -----------------------------------------------

THEORY OF OPERATION ---------------------------------------------------------------------------------------------

4-1.

Overall Description ---------------------------------------------------------------------------------------

4-4.

Circuit Description ---------------------------------------------------------------------------------------

4-5.

Input Network ---------------------------------------------------------------------------------------

4-16.

Modulator - Demodulator ------------------------------------------------------------------------

4-23.

The Feedback Network ----------------------------------------------------------------------------

4-27.

Power Supply ----------------------------------------------------------------------------------------

MAINTENANCE ----------------------------------------------------------------------------------------------------------
5-1.

Introduction -----------------------------------------------------------------------------------------------

5-3.

Test Equipment Required -------------------------------------------------------------------------------

5-5.

Performance Checks -------------------------------------------------------------------------------------

Change

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Содержание 410C

Страница 1: ... A L ORGANIZATIONAL DS GS AND DEPOT MAINTENANCE MANUAL HEWLETT PACKARD ELECTRONIC VOLTMETER MODEL 410C T h i s c o p y I S a r e p r i n t w h i c h i n c l u d e s c u r r e n t p a g e s f r o m C h a n g e 1 H E A D Q U A R T E R S D E P A R T M E N T O F T H E A R M Y AUGUST 1967 ...

Страница 2: ...TM 11 6625 1614 15 WARNING DANGEROUS VOLTAGES EXIST IN THIS EQUIPMENT Be careful when working on the power supplies and their circuits or on the 115 or 230 volt ac line connections DON T TAKE CHANCES ...

Страница 3: ... Conductor Power Cable 2 12 Primary Power Requirements 2 14 Repackaging for Shipment III OPERATION 3 1 Introduction 3 3 Adjustment of Mechanical Zero 3 5 Front and Rear Panel Description 3 7 Operating Procedures 3 9 DC Voltage Measurements Figure 3 2 3 11 DC Current Measurements Figure 3 3 3 13 AC Voltage Measurements Figure 3 4 3 15 Precautions When Measuring AC Voltage 3 28 Negative Pulses 3 31 ...

Страница 4: ...age of Complex Waveforms Recommended Test Equipment DCV Accuracy Test DCV Input Resistance Test DCA Accuracy Test Deleted AC Accuracy Test Power Supply Test AC Full Scale Adjust Front Panel Troubleshooting Prmedure Troubleshooting Prwedure LIST OF ILLUSTRATIONS The Combining Case Steps to Place Instrument in Combining Case Adaptor Frame Instrument Combination TWO Half Modules in Rack Adaptor Front...

Страница 5: ...ion High Frequency Response Test Low Frequency Response Test Troubleshooting Tree A4 Chopper Assembly Installation Chopper Frequency Adjust Setup Power Supply Measurements Power Supply Schematic Typical Amplifier Waveforms Amplifier Schematic Model 11036A AC Probe Exploded Model l1036A Probe Schematic RANGE and FUNCTION Switching Pictorial Input RANGE and FUNCTION Switching Schematic Page 4 4 4 5 ...

Страница 6: ...Figure 1 1 TM 11 6625 1614 15 M o d e l 4 1 0 C Section I Figure 1 1 1 0 ...

Страница 7: ...5 73 AFR 400 54 MCO 4430 3E c Discrepancy in Shipment Report DISREP SF361 Fill out and forward Discrepancy in Ship ment Report DISREP SF 361 as prescribed in AR 55 38 NAVSUPINST 4610 33B AFR 75 18 MCO P4610 19C and DLAR 4500 15 1 A 4 Reporting Errors and Recoin mending Improvements You can help improve this manual If you find any mistakes or if you know of a way to improve the pro cedures please l...

Страница 8: ......

Страница 9: ...Table 1 1 TM 11 6625 1614 15 Section I Table 1 1 Model 410C 01556 2 1 3 ...

Страница 10: ...e can be measured with an accuracy of 5 of reading at midscale resistance from 0 2 ohms to 500 megohms can be measured with reduced accuracy The Model 410C Electronic Voltmeter is shown in Figure 1 1 the specifications are given in Table 1 1 1 3 With the Model 11036A detachable AC Probe the Voltmeter can be used to measure AC voltage from 20 cps to 700 Mc From 20 cps to 100 MC AC voltage from 0 5 ...

Страница 11: ...over a frequency range of 20 cps to 700 Mc Reference calibration accuracy at 400 cps sinusoidal is 3 of full scale Frequency response is 10 from 20 cps to 700 Mc with indications obtainable to 3000 Mc Frequency response at 100 Mc is within 2 The Model 110364 responds to the positive peak above average value of the signal applied The Model 410C is calibrated to read in RMS volts for sine wave input...

Страница 12: ...Model 410C TM 11 6625 1614 15 Section II Figures 2 l and 2 2 Figure 2 1 The Combining Case Figure 2 2 Steps to Place Instrument in Combining Case 2 0 01556 1 ...

Страница 13: ...ombinations of submodular units It can be rack mounted only An illustration of the adapter frame is given in Figure 2 3 Instruc tions are given below a Place the adapter frame on edge of bench as shown in step 1 Figure 2 4 b Stack the submodular units in the frame as shown instep 2 Figure 2 4 Place the spacer clamps between instruments as shown in step 3 Figure 2 4 c Place spacer clamps on the two...

Страница 14: ...s a Place instrument in original container if avai Model 410C lable Figure 2 4 Two Half Modules in Rack Adapter b Ensure that container is well sealed with strong tape or metal bands 2 17 If original container is not to be used proceed c Place instrument and inner container in a heavy as follows carton or wooden box and seal with strong tape or a Wrap instrument in heavy paper or metal bands plast...

Страница 15: ...3 3 3 12 General instructions for the measurement of DC current are the same as those given for DC volt age measurements Paragraph 3 9 01556 2 3 13 1 3 14 AC VOLTAGE MEASUREMENT Figure 3 4 ONE SIDE OF ALMOST ALL POWER DISTRIBUTION SYSTEMS IS GROUNDED EXTREME CAUTION MUST BE USED IF DIRECT MEASUREMENT OF POWER LINE VOLTAGES IS ATTEMPTED IF THE GROUND CLIP LEAD IS ACCIDEN TALLY CONNECTED TO THE UN G...

Страница 16: ...r can be con nected from the floating ground terminal to the chassis ground terminal on the DC AMPLIFIER OUTPUT connector If a shorting bar is not used the COM Lead is floating except when the FUNCTION SELECTOR is set to ACV 8 9 10 11 12 13 14 DCV This lead is used in conjunction with the COM Lead to measure DC voltage AC PROBE 300V MAX Receptacle for tele phone type plug of Model 11036A AC Probe ...

Страница 17: ...isting coaxial transmission line cut the line away so the center con ductor of the line is exposed through a hole large enough to clear the body of the probe The nose of the probe should be removed for this type of measurement Connect one terminal of a button type capacitor of ap proximately 50 picofarads to the center conductor of the coaxial line so that the other terminal of the oapa citor will...

Страница 18: ...0 pps t l would be 990 microseconds Thus To t 1 would be approximately 0 and from the graph it is seen that K is approximately 0 The expression would then reduce to 3 30 It can be seen that in the case of negative pulses of short duration much smaller readings will be ob tained for an equivalent positive pulse As a result large multiplying factors must be used and unless the pulse voltage is large...

Страница 19: ...TM 11 6625 1614 15 Model 410C Section III F i g u r e 3 2 01556 2 Figure 3 2 DC Voltage Measurements 3 5 ...

Страница 20: ...TM 11 6625 1614 15 Section III Model 410C Figure 3 3 Figure 3 3 DC Current Measurements 3 6 01556 3 ...

Страница 21: ...TM 11 6625 1614 15 Model 410C Section III Model 410C Figure 3 4 AC Voltage Measurements 01556 3 3 7 ...

Страница 22: ...Figure 3 5 TM 11 6625 1614 15 Section III Figure 3 5 Model 410C 3 8 0 1 5 5 6 2 ...

Страница 23: ...TM 11 6625 1614 15 Model 410C Section III Figure 3 6 Figure 3 6 Graph Used in Calculation of Pulse Voltage Readings 01556 2 3 9 ...

Страница 24: ...TM 11 6625 1614 15 Section III Model 410C Figure 3 7 Figure 3 7 Resistance Measurements 3 10 01556 2 ...

Страница 25: ...TM 11 6625 1614 15 Model 410C Section III Figure 3 8 Figure 3 8 DC Nano Amoere Current Measurements 01556 3 3 11 ...

Страница 26: ...TM 11 6625 1614 15 Section IV Figure 4 1 and 4 2 Model 410C Figure 4 1 Block Diagram Model 410C Figure 4 2 Modulator Demodulator Mechanical Analogy 4 0 01556 2 ...

Страница 27: ...f the input network is to accurately attenuate the in put signal to a maximum of 15 millivolts at the modu 01556 2 later input The network presents an input impedance of 10 megohms on the three most sensitive ranges and 100 megohms on all other ranges 4 10 The resistor R1 located in the DCV probe in conjunction with resistors A2R10 through A2R26 pro vides the 10 megohm input impedance required for...

Страница 28: ...RK 4 24 The feedback network drives the meter and determines the DC gain of the amplifier The feed back is varied depending on the position of the FUNC TION and RANGE selectors The different feedback configurations are discussed below 4 25 FEEDBACK NETWORK FOR DCA OHMS AND DCV Figures 4 3 4 4 and 4 5 show the feed back configuration for ail positions of the FUNCTION SELECTOR except ACV The meter i...

Страница 29: ...Figure 4 3 Model 410C TM 11 6625 1614 15 Section IV Figure 4 3 01556 2 4 3 ...

Страница 30: ...Figure 4 4 TM 11 6625 1614 15 Section IV Figure 4 4 Model 410C 4 4 01556 2 ...

Страница 31: ...Figure 4 5 TM 11 6625 1614 15 Section IV Figure 4 5 01556 2 4 5 ...

Страница 32: ...Figure 4 6 TM 11 6625 1614 15 Section IV Figure 4 6 Model 410C 4 6 01556 2 ...

Страница 33: ......

Страница 34: ... Measure Model 3400A RMS ments ripple Voltmeter Electronic Counter Frequency Range to at Chopper Frequency Adjust Model 521C Electronic least 102 cps Counter DC Standard output 1000 v DC Adjust Model 740A DC Accuracy 0 2 Standard Ohmmeter Range 100 Mf2 Troubleshooting Model 412A DC VTVM Accuracy 5 Thermistor Mount Frequency 10 Mc to 700Mc Frequency Response Test Model 478A Coaxial Impedance 50 ohm...

Страница 35: ...nducted 5 7 ALTERNATE VOLTAGE SOURCE 5 6 Should it be necessary to use the Voltmeter Calibrator to conduct these Performance Checks the arrangement described in Figure 5 1 will provide the necessary voltage values required How ever the Model 738BR Voltmeter Calibrator is the 5 9 Mechanical METER ZERO a Turn instrument on Allow at least a 20 minute warm up period b Turn voltmeter off and allow 30 s...

Страница 36: ... Rin on RANGES specified 5 13 5 2 Voltage 015 05 15 5 1 5 5 15 50 150 300 300 Model 410C Meter Readings 01 47 to 0153 V 049 to 051 V 147 to 153 V 49 to 51 V 1 47 to l 53 V 4 9 to 5 l V 14 7 to 15 3 V 49 to 51 V 147 to 153 V 290 to 310 V 270 to 330 V 5 14 ACCURACY CHECK DCA a Figure 5 2 describes the test arrangement required for this operation The following additional equipment will also be requir...

Страница 37: ...TM 11 6625 1614 15 Model 410C Section V Tables 5 3 and 5 4 Figure 5 2 Figure 5 2 DC Ammeter Operation Table 5 3 DCV Input Resistance Test Table 5 4 DCA Accuracy Test 01556 2 5 3 ...

Страница 38: ... FUNCTION SELECTOR to OHMS RANGE to RX10 c Set pointer to using rear panel adjust ment OHMS ADJ if required h If both of these ranges function properly it can be assumed that the remainder will also If meter does not function properly refer to Paragraph 5 31 for adjustment procedure 5 17 AMPLIFIER OPERATION Deleted see paras 5 19 and 5 24 d Connect COM and DCA OHMS cables across 10 ohm resistor 5 ...

Страница 39: ... Record voltage indicated on external dc voltmeter for use as a reference d Connect a 1 5 k ohm 1 resistor Part No 0730 0017 across Model 410C DC AMPLI FIER OUTPUT terminals DC voltage recorded in step c above should not change more than 3 mv indicating that dc amplifier output im pedance is within the 3 ohm specification at dc 5 22 AC VOLTMETER OPERATION 5 23 11036A AC PROBE ACCURACY CHECK a Figu...

Страница 40: ...librator to settings listed in Table 5 6 Model 410C should indicate readings within limits specified If not refer 5 25 AC VOLTMETER FREQUENCY RESPONSE CHECK a A Frequency Response Test Set Model 739AR a Test Oscillator Model 651A an RF Signal Generator Model 608 C a Power Meter Model 431 B a Thermistor Mount Model 478A a Probe T Connector Model 11042A a VHF Signal Generator Model 612A and a 10 KC ...

Страница 41: ... r o b e t i p o n t h e M o d e l 1 1 0 3 6 A a n d c o n n e c t d i r e c t l y t h r o u g h a 5 0 o h m l o a d t o t h e o u t p u t o f t h e F r e q u e n c y R e s p o n s e T e s t S e t C o n n e c t t h e o u t p u t o f t h e T e s t O s c i l l a t o r d i r e c t l y t o t h e i n p u t o f t h e F r e q u e n c y R e s p o n s e T e s t S e t O b s e r v e s t e p g t h r o u g h o...

Страница 42: ... l i b r a t i o n p r o c e d u r E f o r t h e M o d e l 4 1 0 C T h e s e o p e r a t i o n s s h o u l d b e c o n d u c t e d o n l y i f i t h a s p r e v i o u s l y b e e n e s t a b l i s h e d b y P e r f o r m a n c e C h e c k s P a r a g r a p h 5 5 t h a t t h e M o d e l 4 1 0 C i s o u t o f a d j u s t m e n t I n d i s c r i m i n a t e a d j u s t m e n t o f t h e i n t e r n a...

Страница 43: ...ple should not exceed 2 5 mv 5 3 0 D C Z e r o A d j u s t m e n t a n d B i a s a Set Model 410C Function Selector to DCV and Range Switch to 5 V b S h o r t D C V C a b l e t o C O M C a b l e c A d j u s t A 3 R 2 1 f u l l y c o u n t e r c l o c k w i s e a n d then rotate about 20 clockwise d Adjust ZERO ADJ pot on rear panel for zero meter deflection Switch to DCV If any deflection is obser...

Страница 44: ......

Страница 45: ... h e a b o v e r a n g e s r e a d j u s t A 6 R 1 8 t o r e d u c e e r r o r g I f e r r o r g r e a t e r t h a n 2 o f f u l l s c a l e e x i s t s o n a n y r a n g e b e t w e e n 1 5 m v a n d 1 5 0 m v i n c l u s i v e s e l e c t n e w s e t t i n g f o r A 6 R 1 8 t o y i e l d b e s t r e s u l t s o n t h e s e r a n g e s I f e r r o r g r e a t e r t h a n 2 o f f u l l s c a l e s...

Страница 46: ... m o n s h o r t l e a d d Adjust R1 for Model 410C zero deflection 5 35 AC FULL SCALE ADJUST 5 V RANGE a C o n n e c t M o d e l 4 1 0 C a c p r o b e t o v o l t m e t e r c a l i b r a t o r o u t p u t t e r m i n a l s Set Model 410C FUNCTION SELECTOR to ACV RANGE to 500 v b A d j u s t v o l t m e t e r c a l i b r a t o r t o p r o v i d e 3 0 0 v 4 0 0 c p s r m s output M o d e l 4 1 0 C ...

Страница 47: ...Table 5 8 M o d e l 4 1 0 C TM 11 6625 1614 15 5 1 3 ...

Страница 48: ... isolating malfunctions The steps in Table 5 10 des cribe the normal conditions which should be encoun tered during the checks circled numbers in Figure 5 5 Figure 5 5 5 41 The checks outlined in Table 5 10 are not de signed to measure all circuit parameters rather only to localize the malfunction Therefore it is quite possible that additional measurements will be required to completely isolate th...

Страница 49: ... e Clean excess flux from the connection and adjoining area a Use a low heat 25 to 50 watts small tip f To avoid surface contamination of the printed soldering iron and a small diameter rosin circuit clean with weak solution of warm water core aoider and mild detergent after repair Rinse thoroughly with clean water When completely dry spray b Circuit components can be removed by lightly with Krylo...

Страница 50: ...Table 5 9 Paragraph 5 34 Table 5 10 TM 11 6625 1614 15 Model 410C Section V Table 5 9 01566 2 5 1 6 ...

Страница 51: ...Figure 5 7 Table 5 10 Paragraph 5 29 Figure 5 10 Figure 5 7 Table 5 9 Figure 5 10 Figure 5 10 Table 5 9 TM 11 6625 1614 15 Section V Model 410C Table 5 10 5 1 7 ...

Страница 52: ...TM 11 6625 1614 15 Model 410C Figure 5 11 Model 11036A AC Probe Exploded View 5 22 Figure 5 12 Model 11036A AC Probe Schematic 01556 2 ...

Страница 53: ...Figure 5 6 1 TM 11 6626 1614 15 Change 1 5 16 1 ...

Страница 54: ......

Страница 55: ...TM 11 6625 1614 15 Section V Figure 5 8 Figure 5 8 Power Supply Schematic 5 19 ...

Страница 56: ...5 20 TM 11 6625 1614 15 Figure 5 9 Typical Amplifier Waveforms ...

Страница 57: ......

Страница 58: ......

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Страница 60: ...l United States Army The Adjutant General Distribution Active Army USAMB 1 USACDCEC 1 USACDCCEA 1 USA CDCCEA Ft Huachuca 1 NG None USAR None For explanation of abbreviations used see AR 320 50 HAROLD K JOHNSON General United States Army Chief of Staff Eighth USA 5 SAAD 5 TOAD 5 LEAD 3 ...

Страница 61: ......

Страница 62: ...THE METRIC SYSTEM AND EQUIVALENTS ...

Страница 63: ...PIN 016288 000 ...

Страница 64: ...e it They did not even scan it Why should they get your money Why are not letting you give those free manuals to your friends I am setting this document FREE This document was made by the US Government and is NOT protected by Copyright Feel free to share republish sell and so on I am not asking you for donations fees or handouts If you can please provide a link to liberatedmanuals com so that free...

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