Keithley 3720

Section
9: Series 3700 Module Schematics and Connections Series 3700 System Switch/Multimeter
User's Manual
9
-14 Document Number: 3700S-900-
01 Rev. A / August 2007
Model 3721-ST accessory board channel list
The following table shows the association between the Model 3721-ST accessory and each
channel on the Model 3721.
Channel
3721-ST Terminal Board Silkscreen Label
Multiplexer # 1 Output
MUX 1 OUT
1 ... 20
1 ... 20
Multiplexer # 2 Output
MUX 2 OUT
21 ... 40
21 ... 40
Amps Channel 41
AMP1
Amps Channel 42
AMP2
DMM HI & SHI Channel
n928
DMM
No Connects
NC
When viewing this table, keep in mind:
 Multiplexer #1 channels are labeled 1 through 20 and the multiplexer output is labeled
MUX 1 OUT.
 Multiplexer #2 channels are labeled 21 through 40 and the multiplexer output is labeled
MUX 2 OUT.
 Amps Channel 41 is labeled AMP1. This channel is accessed as "n041" where n is the
slot number.
 Amps Channel 42 is labeled AMP2. This channel is accessed as "n042" where n is the
slot number.
 DMM HI & SHI Channel is labeled DMM. This channel is accessed as "n928" where n is
the slot number.
 No connect channels are labeled NC. Do not connect to these channels.