Figure 9-12: Schematic Of The Model 3721 In Four-Wire Common Side Ohm Mode - Keithley 3700 Series User Manual

Series 3700 System Switch/Multimeter User's Manual
The following figure provides a switching schematic for the Model 3721 in 4-wire
common side ohm mode.

Figure 9-12: Schematic of the Model 3721 in four-wire common side ohm mode

Programming Note
The 3721 card that has three additional backplane relays for common side ohms
functionality. Using 'slotX' or "allslots" to query settings on this card
returns information for channels 1 to 40, 911 to 916, 921 to 926 then 917, 927,
and 928 in the response message. Therefore, the three additional common side
ohms backplane relays are listed last.
For example, to print out the channel images on this card when in Slot 2 after a
reset send the following:
reset()
print(channel.getimage('slot2'))
2001;2002;2003;2004;2005;2006;2007;2008;2009;2010;2011;2012;2013;2014;2
015;2016;2017;2018;2019;2020;2021;2022;2023;2024;2025;2026;2027;2028;20
29;2030;2031;2032;2033;2034;2035;2036;2037;2038;2039;2040;2041;2042;291
1;2912;2913;2914;2915;2916;2921;2922;2923;2924;2925;2926;2917;2927;2928
NOTE
3700S-900-01 Rev. C / July 2008
The common side ohm backplane relays (2917, 2927, and 2928) are
listed last.
Section 9: Series 3700 Module Schematics and Connections
9-23