HP Official Electronic Voltmeter Manual - 410C Installation and Operation

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TM 11-6625-1614-15

SECTION I

GENERAL INFORMATION

1-A.1. Scope

a. This manual includes installation and operation instructions and covers operator’s, organizational, direct support (DS), general support (GS), and depot maintenance. It describes Hewlett-Packard (Federal supply code 28480) Electronic Voltmeter Model 410C. This manual applies to equipments with serial num- bers prefixed by 433 and serial number 532-03701 and higher. If the first three digits on your instru- ment are 550, refer to figure 5-10,note 14 for the change in equipments of this serial prefix.

b. A basic issue iterns list for this equipment is not included as part of this manual.

1-A.2. Index of Publications

Refer to the latest issue of DA Pam 310-4 to deter- mine whether there are new editions, changes, or ad- ditional publications pertaining to the equipment.

1-A.3. Maintenance Forms, Records, and Reports

a. Reports of Maintenance and Unsatisfactory Equipment. Department of the Army forms and procedures used for equipment maintenance will be those prescribed by TM 38-750, The Army Mainte- nance Management System.

b. Report of Item and Packaging Discrepancies. Fill out and forward SF 364 (Report of Discrepancy (ROD) ) as prescribed in AR 735-1l-2/DLAR 4140. 55/NAVMATINST 4355.73/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 let us know. Mail your letter, DA Form 2028 (Recommended Changes to Publications and Blank Forms), direct to Commander, US Army Communications and Electronics Materiel Readi- ness Command, ATTN: DRSEL-ME-MQ, Fort Monmouth, NJ 07703. A reply will be furnished to you.

1-A.5. Reporting Equipment Improve. ment Recommendations (EIR)

If your Electronic Voltmeter needs improvement, let us know. Send us and EIR. You, the user are the only one who can tell us what you don’t like about your equipment. Let us know why you don’t like the de- sign. Tell us why a procedure is hard to perform. Put it on an SF 368 (Quality Deficiency Report). Mail it to Commander, US Army Communications and Elec- tronics Materiel Readiness Command, ATTN: DRS- EL-ME-MQ, Fort Monmouth, NJ 07703. We’ll send you a reply.

1-A.6. Administrative Storage

Administrative storage of this equipment consists of covering the equipment with heavy paper taped in a way to prevent entry of dust particles. If environment is humid, use bags of dessicant inside the paper covering.

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Contents HEWLETT-PACKARD Electronic Voltmeter Model 410C Exist in this Equipment HEWLETT-PACKARD Electronic Voltmeter List of Tables Number Section Section General Information Page Model 410C Description Model 410C Figures 2-land Section Installation 01556-1 Section Operation Front and Rear Panel Controls 01556-2 Pulse Measurements Voltage Measurement AT High FRENegative Pulses PRFDC Voltage Measurements 01556-3 AC Voltage Measurements Section Model 410C 5 5 6 Graph Used in Calculation of Pulse Voltage Readings IIIResistance Measurements 01556-2 DC Nano-Amoere Current Measurements Section MODULATOR-DEMODULATOR Input NetworkFeedback Network Power SupplySection 01556-2 Section Section 01556-2 Section Page BNC DC Voltmeter Operation Accuracy Check DCV Alternate Voltage SourceInput Resistance Check DCA Input Resistance Check DCVModel 410C Section Tables 5-3and Ohmmeter Operation Amplifier OperationAmplifier Gain Check AC Voltmeter Operation AC Probe Accuracy Check DC Amplifter Output Impedance CheckAC Voltmeter Frequency Response Check AC Voltmeter Accuracy CheckSET Level Chopper Frequency Adjust Adjustment and Calibration ProcedureCOM N C T I O NPage C e t h e y a r e w i t h i n AC Full Scale Adjust .5 V Range C Zero AdjustTroubleshooting Procedure D e l 4 1 0 C Servicing Etched Circuit Boards Troubleshooting Tree 01566-2Chopper Assembly Installation Paragraph Section Model 410C 11. Model 11036A AC Probe Exploded View Change 16.1 Page Section Power Supply Schematic Typical Amplifier Waveforms Page Page Page Harold K. Johnson Page Metric System and Equivalents N 0 1 6 2 8 8 0 0