Keithley 2790, Reference Manual

Page: 190 / 568

Model 2790 SourceMeter
®
Switch System Reference Manual 5-23
Front panel scanning (7702 only)
Typically a 7702 scan using dB is configured and run using remote programming. However,
once dB is selected using remote programming, a simple dB scan can be configured and run
from the front panel. When the simple scan is configured, it will use the dB measurement
setup for each channel in the scan. Details on configuring and running a scan are provided in
Section 7 .
Remote scanning
For remote programming, the <clist> parameter is used to configure channels for a 7702
scan (
Section 7 ). The <clist> parameter can also include memory pattern locations to
allow scanning through 7751/7752/7753 channels (see “Memory patterns,” page 2-36 ).
Remote programming — dB
dB commands
The dB commands are listed in Table 5-4 . Details on these commands follow the table.
klqb
Queries are not included in Table 5-4 . All the dB commands are provided in
Table 15-11 .
Table 5-4
dB commands
Commands
*
Description Def
DCV dB commands
UNITs:VOLTage[:DC] <name>[, <clist>] Select DCV measurements; <name> = V or
DB.
V
UNITs:VOLTage[:DC]:DB:REFerence <n> Set reference in volts; <n> = 1e-7 to 1000. 1
ACV dB commands
UNITs:VOLTage:AC <name> [, <clist>] Select ACV measurements; <name> = V or
DB.
V
UNITs:VOLTage:AC:DB:REFerence <n> Set reference in volts; <n> = 1e-7 to 1000. 1
Channel list parameter:
7702 <clist> = (@SCH)
where: S = Mainframe slot number (1 or 2)
CH = Switching module channel number (must be 2 digits)
7751/7752/7753 <clist> (DCV only) = (@Mn) (see “Memory patterns,” page 2-36 ).
* The <clist> parameter is used to configure one or more channels for a scan. Each channel in the <clist> must be set to the
function specified by the rel (reference) command. If not, a conflict error (-221) will occur. For example,
UNITs:VOLTage:AC dB, (@101) is only valid if scan channel 101 is set for the ACV function.