V-Source Readback; Figure 5-11 V-Source Readback Circuit - Keithley 2790 User Manual

5-22

V-source readback

Test circuit
The V-source readback circuit is shown in
and 23 routes the voltage to the DMM of the Model 2790. The DMM needs to be on the
1000V range to measure the maximum output of the 7751/7753 (500V).
Figure 5-11
V-source readback circuit
Keithley 7751/7753
V
SOURCE
= Closed channel switch
NOTE Each channel (except channel 23) is a 2-pole switch. Therefore,
21
22
Selects
V-source
+
I/V
Amplifier
when a 2-pole channel is closed, two switches close. Channel 23
is a 1-pole switch (see schematic in Figure 2-1).
Open switches not used in the test circuit are not shown.
Model 2790 SourceMeter
Figure 5-11. Closing channels 13, 18, 21, 22,
1Ω
13
18
v
13
23 18
®
Switch System User's Manual
Input Hi
2790 DMM
Input Lo