Agilent Technologies 34401A Service Manual Page 145
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34401-66522 Display Assembly Replaceable Parts List
Reference Agilent Part Mfr.
Designation Number Qty Part Description Code Mfr. Part Number
C600-C601 0160-6497 4 Capacitor-Fxd 0.1 uF ±10% 50 V 04222 12065C104KAT A
C602-C604 0180-3751 3 Capacitor-Fxd 1 uF ±20% 35 V 28480 0180-3751
C605 0160-6736 3 Capacitor-Fxd 0.01 uF ±10% 50 V 04222 12061C103KAT A
C608-C609 0160-6497 Capacitor-Fxd 0.1 uF ±10% 50 V 04222 12065C104KAT A
C620-C621 0160-6731 2 Capacitor-Fxd 1000 pF ±10% 50 V 04222 12061C102KAT A
C622-C623 0160-6736 Capacitor-Fxd 0.01 uF ±10% 50 V 04222 12061C103KAT A
CR600 1902-1544 1 Diode-Zener 10V 5% TO-236 Pd=.35W 04713 BZX84C10
CR601 1906-0291 2 Diode-Dual 70V 100 mA 04713 MBAV99
CR603 1906-0291 Diode-Dual 70V 100 mA 04713 MBAV99
CR604-CR605 1906-0337 4 Diode-Dual 60V 200 mA2 84801 906-0337
CR606 1902-1565 1 Diode-Zener 4.7V 5% 28480 1902-1565
CR608-CR609 1906-0337 Diode-Dual 60V 200 mA 28480 1906-0337
M600* 33120-00611 1 Shield-ESD 28480 33120-00611
PCB1 34401-26502 1 Printed Circuit Board - Blank 28480 34401-26502
R600 0699-1322 1 Resistor 68.1K ±1% .125W 28480 0699-1322
R602 0699-1378 1 Resistor 2.61K ±1% .125W 28480 0699-1378
R603 0699-1399 1 Resistor 23.7K ±1% .125W 28480 0699-1399
R604 0699-1398 1 Resistor 21.5K ±1% .125W 28480 0699-1398
R605-R606 0699-1330 6 Resistor 100K ±1% .125W 28480 0699-1330
R609-R611 0699-1396 3 Resistor 17.8K ±1% .125W 28480 0699-1396
R620-R623 0699-1423 4 Resistor 215 ±1% .125W 28480 0699-1423
R640-R641 0699-1330 Resistor 100K ±1% .125W 28480 0699-1330
R643-R644 0699-1330 Resistor 100K ±1% .125W 28480 0699-1330
RP601 1810-1360 1 Network-Res 16-SMD 10.0K Ohm x 8 91637 SOMC-1603-103G
U600 1820-8985 1 IC-MCU w/FIP Driver 28480 1820-8985
U601 1820-5805 1 IC-Shf-Rgtsr CMOS/74HC Bidir 01295 SN74HC194DW
U602 1826-1528 1 IC-Comparator LP Quad 27014 LM339M
U603 2090-0296 1 Display-Vacuum Fluorescent 28480 2090-0296
W601 34401-61602 1 Cable Assy 8.8"L 0.236/0.157" Strip 28480 34401-61602
* M600 is shipped as a single part which breaks apart into two shields; you will use only one half of the part.
8
Chapter 8 Backdating
Agilent 34401A Multimeter
139
- Agilent 34401A 1
- 6 ½ Digit Multimeter 1
- Safety Information 3
- Additional Notices 5
- DECLARATION OF CONFORMITY 6
- Multimeter 7
- The Front Panel at a Glance 8
- Display Annunciators 10
- The Rear Panel at a Glance 11
- In This Book 12
- Contents 13
- Specifications 17
- DC Characteristics 18
- Measuring Characteristics 19
- Chapter 1 Specifications 19
- AC Characteristics 20
- General Information 24
- HOLD Sensitivity: 24
- Product Dimensions 25
- ≤ 150 µV 26
- ≤ 15 µV 26
- ≤ 1.5 µV 26
- Measurement Error 27
- Sensitivity 28
- Resolution 29
- Accuracy 29
- Transfer Accuracy 30
- 24-Hour Accuracy 30
- 90-Day and 1-Year Accuracy 30
- Temperature Coefficients 30
- Quick Start 33
- ERROR annunciator turns on 35
- To Adjust the Carrying Handle 38
- To Measure Voltage 39
- To Measure Resistance 39
- To Measure Current 40
- To Test Continuity 41
- To Check Diodes 41
- To Select a Range 42
- To Set the Resolution 43
- To Make dB Measurements 46
- To Make dBm Measurements 47
- To Trigger the Multimeter 48
- Using an External Trigger 48
- -H.DDD,DDD EFFF 50
- -045.23 mVDC 50
- Agilent System II 51
- Menu Tutorial 53
- Front-Panel Menu Reference 55
- A Front-Panel Menu Tutorial 57
- Chapter 3 Menu Tutorial 58
- On/Off 59
- MEAS MENU is your first 61
- A: , B: , etc.) 61
- Shift < 61
- Auto/Man 63
- Calibration 65
- Procedures 65
- Calibration Procedures 66
- Agilent Calibration Services 67
- Calibration Interval 67
- Recommended Test Equipment 69
- Application 69
- Recommended Equipment 69
- Accuracy Requirements 69
- Test Considerations 70
- Self-Test 71
- ERROR annunciator 71
- Quick Performance Check 72
- Q in the 72
- Zero Offset Verification 73
- Input HI-LO and Sense HI-LO 73
- Gain Verification 75
- AC FILTER slow (MEAS MENU) 76
- Calibration Security Code 79
- Be careful 80
- Calibration Count 81
- Calibration Message 81
- Zero Adjustment 83
- Zero Adjustment Procedure 83
- Gain Adjustment 85
- Gain Adjustment Procedure 86
- – 100 kHz 86
- –10 Vdc Adjustment Procedure 88
- 500 Vdc Adjustment Procedure 89
- RAM U505 90
- MEAS MENU) 90
- ± 400 µA ac 90
- Input Frequency 91
- AC Filter Selected 91
- Settling Time 91
- Understanding Resolution 92
- -045.23 mVDC 93
- Error Messages 95
- out of range 96
- Calibration Error Messages 96
- Theory of 97
- Operation 97
- Theory of Operation 98
- Block Diagram 99
- Front/Rear Selection 100
- Function Switching 101
- DC Amplifier 102
- Input I and 103
- Ohms Current Source 104
- AC Circuit 105
- A-to-D Converter 107
- Floating Logic 109
- Earth-Referenced Logic 111
- Power Supplies 112
- Front Panel 113
- Service 115
- Operating Checklist 117
- Types of Service Available 118
- Repackaging for Shipment 119
- Surface Mount Repair 120
- RS-232 connector 121
- GPIB interface 121
- Installation Procedure 122
- Troubleshooting Hints 123
- Unit is inoperative 123
- Unit fails self-test 123
- Current input is inoperative 124
- Power supply problems 124
- Readings indicate OVERLOAD 124
- Power Supply Minimum Maximum 124
- Readings are inaccurate 125
- Readings show excessive noise 125
- Self-Test Procedures 126
- Power-On Self-Test 126
- Self-Test Descriptions 126
- Replaceable Parts 131
- To Order Replaceable Parts 132
- Backdating and Part Changes 132
- Chapter 7 Replaceable Parts 133
- Agilent 34401A Mainframe 140
- Manufacturer’s List 141
- Backdating 143
- Chapter 8 Backdating 145
- Agilent 34401A Multimeter 145
- Schematics 148
- Binder Edge (LH Page) 151
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