Keithley 2790, Reference Manual

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3-6 Model 2790 SourceMeter
®
Swich System Reference Manual
Remote programming — autozero and LSYNC
Autozero and LSYNC commands
The commands to control display resolution (digits) are listed in Table 3-1 .
Channel scan list parameter
7702 module scanning
Channels of one or two 7702 switching modules installed in the Model 2790 can be
scanned. Each scan channel can have its own unique setup. For example, a channel could
be set to measure DCV on the 10V range, while another channel can be set to measure
2-wire ohms on the 10k
Ω
range.
From the front panel, scan channels are configured from the scan configuration menu as
explained in
Section 7 . For remote programming, the <clist> parameter is used to config-
ure scan channels.
Channel list parameter:
<clist> = (@SCH)
where: S = Mainframe slot number (1 or 2)
CH = Switching module channel number (must be 2 digits)
Examples: (@101) = Slot 1, Channel 1
(@101, 203) = Slot 1, Channel 1 and Slot 2, Channel 3
(@101:110) = Slot 1, Channels 1 through 10
Table 3-1
Autozero and LSYNC commands
Commands Description Default
Autozero command *
SYSTem:AZERo[:STATe] <b> Enable or disable autozero; <b> = ON or
OFF
ON
Line synchronization command
SYSTem:LSYNc[:STATe] <b> Enable or disable LSYNC; <b> = ON or
OFF
OFF
* After enabling autozero, you can update the internal reference points immediately by setting the integration
rate to 0.01 PLC and then back to the desired setting (see NPLC commands in Section 4 ).