HEWLETT-PACKARD 405CR Instruction Manual

Model 405C Table of Contents
Lists of Illustrations and Tables
TABLE OF CONTENTS
Section Page Section Page .
I GENERALDESCRIPTION .......... 1'-1 III THEORY OF OPERATION (Cont'd)
1.1 . Identification ............. 1-1 3.6 . Checking Range ........... 3-2
1.2 . Cooling ................. 1-1 3.7 . Decimal Shift Control ........ 3-3
1.3 . Stepping Switch ............ 1-1
1.4 . Power Line Voltage .......... 1-1 Iv
4.1 . Introduction .............. 4-1
1.5 . Three Conductor Power Cable .... 1-1
4.2 . Test Equipment ........... 4-1
4.3 . Performance Check ......... 4-1
II OPERATING INSTRUCTIONS ........ 2-1
4.4 . Cabinet Removal ........... 4-2
2.1 . Automatic Operation ......... 2-1
4.5 . Power Supplies ............ 4-2
2.2 . Manual Operation ........... 2-1
4.6 . Balancing the Amplifier ....... 4-2
2.3 . Calibration ............... 2-1
4.7 . Neutralizing the Amplifier ...... 4-3
2.4 . Input Filter .............. 2-2
4.8 . 405A-95C Adapter Adjustment ..... 4.3
2.5 . Operation with Digital Recorders ... 2-2
4.9 . Stepping SwitchMaintenance ..... 4-3
2.6 . Electrical Output Information ..... 2-3
4.10 . Tube and Diode Replacement ..... 4-3
4 . 11 . Trouble shooting ........... 4-5
III THEORY OF OPERATION .......... 3-1
3.1 . Introduction .............. 3-1
3.2 . Input Circuit .............. 3-1 V REPLACEABLE PARTS .......... 5-1
3.3 . Voltage-to-Time Conversion ..... 3-1 5.1 . Table of Replaceable Parts ..... 5-1
3.4 . Zero-Setting the Voltmeter ...... 3-2 5.2 . Digital Recorder Adapter. 405A-95C . 5-1
3.5 . The Measurement Process ...... 3-2 5.3 . Ordering Information ......... 5-1
LIST OF ILLUSTRATIONS
Figure Page Figure Page
1.1 . Model 405CR, Automatic DC Digital 4.6 . Voltage and Resistance Diagram.
Voltmeter ................ 1 . 1 V1 through V9 .............. 4-13
4.7 . Voltage and Resistance Diagram.
3.1 . Model 405 C Biock Diagram ....... 3-0
V10 through V18 ............. 4-14
4.1 . Stepping Switch Lubrication Diagram ... 4-4 4.8 . Power Supply ................ 4-15
4.2 . Troubleshooting Waveform Time 4.9 . hplifier/Oscillator Section ........ 4-16
Sequence ................. 4-8 4- 10 . Control/Counter Section .......... 4-17
4.3 . Ranging Troubleshooting Waveforms ... 4-9 4.11 . Stepping Switch ............... 4-18
4.4 . Top Internal View of Model 405C ..... 4-10 4.12 . Polarity Relay Wiring ........... 4-19
4.5 . Bottom Internal View of Model 405C ... 4-11 4.13 . 405C-95C Digital Recorder Adapter .... 4-20
LIST OF TABLES
Table Page
1.1 . Specifications .................... 1-0
2.1 . 53 Output Connector Chart ............. 2-3
4.1 . Troubleshooting Aid ................ 4-4
4.2A . Waveforms .................... 4-6
4.2B . Troubleshooting the Amplifier ........... 4-7
5.1 . Replaceable Parts ................. 5-1
5.2 . Digital Recorder Adapter, Model 405A-95C .... 5- 13
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