34925A Simplified Schematic For Two- Or Four-Wire Mode - Agilent Technologies 34921A User Manual

34925A 40/80-Channel Optically-Isolated FET Multiplexer

34925A Simplified Schematic for Two- or Four-Wire Mode

This drawing shows two independent 20- channel 2- wire MUXes.
To change configuration modes, use the
command.
Overvoltage Protection
COM 1
COM 2
100Ω
Current-Limiting Circuitry
36
100Ω
H
100Ω
L
(each channel)
001
002
003
004
005
H L
911
H
Analog Buses
H
921
H L
021
022
023
024
51.1Ω
025
11Ω 11Ω
Agilent 34921A-34925A Low Frequency Multiplexer Modules User's Guide
SYSTem:MODule:WIRE:MODE
NOTE: The three-digit number assigned to
each switch represents the channel number.
NOTE:
Bank relays: FET non-latching
Analog Bus relays: Armature non-latching
Bank 1
H H
006 011
L L
007 012
013
008
009 014
010 015
912
L H L
ABus1 ABus2
DMM DMM
(MEAS) (SENS)
L H L
922
026 031
027 032
028 033
029 034
H H
030 035
L L
Bank 2
H H
016
L L
017
018
019
020
913 914
H L H L
ABus3 ABus4
H L H L
923 924
036
037
038
039
H H
040
L L