General - HP 3455A Operating And Service Manual

Table of Contents
Model 3455A
TABLE OF CONTENTS (Cont'd)
Section Page
VI. REPLACEABLE PARTS................- 6-1
6-1. Introduction ....................000- 6-1
6-4, Ordering Information................ 6-1
6-6. Non-Listed Parts.............eeen eee 6-1
6-8. Parts Changes............ceceeeeeaee 6-1
6-10. Proprietary Parts..................-- 6-1
6-12. Exchange Assemblies................. 6-2
6-15. Service Kit. ....-..c cece cece een eees 6-2
Section
Page
VII. MANUAL
CHANGES............0500005- 7-1
F-1.
Introduction. .............
cece n eae 7-1
Section
Page
VIII SERVICE 64 csc. ccc ec ce k ease bia sees 8-1
8-1 Introduction...........--... .. 8-!
8-3.
Safety Considerations...............+--
8-8. Recommended Test Equipment....... 8-1
8-10.
Introduction..............++----0-+ 8-2
8-12. Input Switching and DC Attenuator. . .8-2
8-13. General. 0... ccc cece eens 8-2
8-15. Detailed Description..............- 8-2
8-17. Operational Attenuator...........-- 8-2
8-19. Auto Calibration-DC Voltage......-.. 8-2
8-20, General ............. 0. eee eee eee 8-2
8-22. Circuit Description...............-- 8-4
8-34. Auto-Calibration-Ohms ........-...- 8-9
8-35. General...
0.2. eee
ee ee eee eee 8-9
8-37.
Circuit Description.............---- 8-9
8-42. Auto Calibration-A/D Convertor. ...8-10
8-44.
Circuit Description................ 8-11
8-47. True RMS AC Convertor.........-- 8-11
8-48.
General.........
0... cee eee eee eee 8-11
8-50. Circuit Description.........-...+- 8-11
8-56. Average Responding AC Convertor
(Option 001)...........+-.2000-- 8-12
8=87.. General ji e.cs cies Beebe cies deen se 8-12
8-59.
Circuit Description.............-++ 8-12
8-65. Ohms Convertor
8-66. General ........ 0c cece eee eee
8-68.
General Description............... 8-13
8-73. DC Preamplifier..............-00--
8-74. General 0.0... eee eee ee eee
8-76. Circuit Description
8-82. Reference Assembly
8-83. General ...........--0000
8-85. Circuit Description
8-87.
Analog-to-Digital Convertor (A/D). .8-16
8-88.
General ........-.
02 eee rere eee 8-16
8-92. Circuit Description.
8-103. Inguard Controller. .
8-104.
General .........
0.00. ee eee eee ee
8-107. Circuit Description............-...
8-115. Main Controller..............---5-
8-116.
General 0.0.0...
0. 2c ee eee eee
8-118. Circuit Description....
8-141. HP-IB Circuit.........
8-142. General ........ 0.0. cece eee ctnee
8-144. Circuit Description................
8-168. Front Panel Operation..............
8-169. Circuit Description................
TROUBLESHOOTING
8-174. Introduction ............. cee neers 8-35
8-176. General Block Diagram Theory
of Operation. .......... 06... e ee 8
8-179. Outguard Section...
8-185, Inguard Section....
8-194. Preliminary Troubleshooting Check. .8-36
8-195. Instrument Half-Splitting
Techniques ..... 0.0... scene eee 8-36
8-198. Service Group Summary........... 8-37
SERVICE GROUP A
8-A-1 Turn-On Circuitry (Inguard and
Outguard)......... 0-2. cece eee ee eee 8-40
8-A-3. Inguard/Outguard Isolation........... 8-40
8-A-5. Outguard Troubleshooting
(Schematic 8)....... 0... cece eee eee 8-40
8-A-6. Inguard Troubleshooting
(Schematic 5, 6, 7).........-0see eens 8-40
8-A-8. Al0 Motherboard Troubleshooting
(Schematic 5, 6, 7).........---200045- 8-40
8-A-10. A/D Board Troubleshooting
(Schematic 5, 6). 0.0.2.2... 0c eee eee 8-41
8-A-12. Inguard/Outguard Transfer Circuit
Troubleshooting (Schematic 7,8). ...... 8-41
SERVICE GROUP B
8-B-1. Auto-Cal and DC Troubleshooting
(Inguard) oi: iscasies cteigeais ele sera 8-43
8-B-3. Auto-Cal Constants............--.5-- 8-43
8-B-9. Auto-Cal Switch Closures
(Schematic 1, 5, 6, 7)........0cee eee
8-B-11. Cal Constants Service Procedure
8-B-14. Switch Closure Table...............55
8-B-16. Auto-Cal Troubleshooting
(Schematic 1, 7)....--.. 6 eee eeeereeee 8-52
8-B-18. DC Inoperative (Schematic 1).......... 8-54
8-B-20. Leakage and Other Various
Malfunctions ..........6+eeeeeeee eee 8-54
8-B-23. 10 V Range or Constant 10 and 11 Fail. . .8-55
8-B-24. 1 V Range or Constant 0, 1, and 2 Fails. .8-55
8-B-25. 100mV Range or Constant 3 Fails....... 8-55
8-B-26. 100 V Range or Constants 5, 4, and 7
Fai occ essujaaia diesartare isd ern aun as 8-55
8-B-27. 1000 V Range or Constant 6 Fails....... 8-56
8-B-28. Various Other Malfunctions
8-B-30. Other Troubleshooting Hints. .
8-B-31. General Noise. .......-.00ee eee teen ee
8-B-33.
DC Noise (Schematic 1, 5, and 6)....... 8-57