Section 5: Model 3721 multiplexer card
Series 3700A Switch and Control Cards Reference Manual
5-6
3700AS-909-01 Rev. B / December 2011
Programming Note
The 3721 card has three additional backplane relays for commonside 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
commonside ohms backplane relays are listed last.
For example, to print out the channel images on this card when in slot 2 after a reset operation send
the following:
reset()
print(channel.getimage('slot2'))
Output:
2001;2002;2003;2004;2005;2006;2007;2008;2009;2010;2011;2012;2013;2014;2015;
2016;2017;2018;2019;2020;2021;2022;2023;2024;2025;2026;2027;2028;2029;
2030;2031;2032;2033;2034;2035;2036;2037;2038;2039;2040;2041;2042;2911;2912;
2913;2914;2915;2916;2921;2922;2923;2924;2925;2926;2917;2927;2928
NOTE
The commonside ohm backplane relays (2917, 2927, and 2928) are listed last.
The next figure is a diagram of the screw terminal assembly:
Figure: Model 3721 screw terminal assembly circuit board
Figure 11: 3721 screw terminal assembly circuit board