4 Troubleshooting and Diagnostics
96 Keysight 34980A Service Guide
For the 34925A, FET part numbers are given on page 129 and the component
locator is shown on page 142. The table below shows the relationship of channel
numbers to relay numbers.
Bank 1 Bank 2
2-, 4-Wire
Channel
1-wire Channel FET
2-, 4-Wire
Channel
1-Wire Channel FET
001 001, 002 U601 021 041, 042 U701
002 003, 004 U602 022 043, 044 U702
003 005, 006 U603 023 045, 046 U703
004 007, 008 U604 024 047, 048 U704
005 009, 010 U605 025 049, 050 U705
006 011, 012 U606 026 051, 052 U706
007 013, 014 U607 027 053, 054 U707
008 015, 016 U608 028 055, 056 U708
009 017, 018 U609 029 057, 058 U709
010 019, 020 U610 030 059, 060 U710
011 021, 022 U611 031 061, 062 U711
012 023, 024 U612 032 063, 064 U712
013 025, 026 U613 033 065, 066 U713
014 027, 028 U614 034 067, 068 U714
015 029, 030 U615 035 069, 070 U715
016 031, 032 U616 036 071, 072 U716
017 033, 034 U617 037 073, 074 U717
018 035, 036 U618 038 075, 076 U718
019 037, 038 U619 039 077, 078 U719
020 039, 040 U620 040 079, 080 U720
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