Keithley 2700, User Manual, Page: 46 / 500

Model 2700 Multimeter/Switch System User’s Manual Getting Started 1-29
Closing and opening channels — system channel operation
NOTE See Section 2 for details on closing and opening switching module channels.
NOTE The following discussion assumes a multiplexing switching module
(i.e., Model 7700) is installed in slot 1 of the mainframe. Switching module
installation is covered in
Section 2 (see “Switching module installation and
connections,” page 2-3 ).
An alternative to installing a switching module is to assign slot 1 as a
pseudocard using remote programming. The instrument will operate as if a
switching module is installed in slot 1. To “install” a 7700 pseudocard in slot 1,
send the following command:
SYST:PCAR1 C7700
System channel operation is used to connect input channels to the DMM of the
Model 2700:
• For a 2-wire function (i.e., DCV), closing a system channel connects the input to
DMM Input of the Model 2700.
Figure 1-4 shows system channel 1 closed. For the
Ω
2 function, the resistance
(DUT) would be connected to DMM Input as shown Figure 1-4 .
Figure 1-4
Connection to DMM for 2-wire function (system channel 101 closed)
DMM
DUT
DMM
Switching Module Switching Module
HI
LO
HI
LO
Input
Ch 1
HI
LO
HI
LO
Input
Ch 1