Keithley 2750 User Manual

Model 2750 Multimeter/Switch System User’s Manual Basic DMM Operation 3-45
Reference
a. FUNCtion <name> [, <clist>]
Note that the <name> parameters in the table are enclosed in single quotes
(‘ ’). However, double quotes (“ ”) can instead be used. For example:
FUNC ‘VOLT:AC’ = FUNC “VOLT:AC”
Scan configuration — When using the <clist> command to configure a scan
channel, the scan channel must first be set to the appropriate function before
sending other commands to configure it. For example, to set scan channel 101
to use offset compensated ohms, the following command sequence would be
sent:
FUNC ‘FRES’, (@101) ' Set scan channel 101 to Ω4 function.
FRES:OCOM ON, (@101) ' Enable offset compensated ohms for scan
' channel 101.
If scan channel 101 was not first set for the Ω4 function, error +700 (Invalid
function in scanlist) will occur when trying to enable offset compensated ohms
for that channel. Details on scanning are provided in Section 7.
b. FRESistance:OCOMpensated <b> [, <clist>]
FRESistance:DCIRcuit <b> [, <clist>]
The instrument does not have to be on the Ω4 function to enable offset-
compensated ohms and/or dry circuit ohms. When Ω4 is selected, offset-
compensated ohms and/or dry circuit ohms will be enabled.
When using the <clist> parameter to configure a scan channel for offset-
compensated ohms, that channel must already be set for Ω4. If set for another
function, a settings conflict (-221) will occur.
c. TEMPerature:TCouple:RJUNction:RSELect <name> [, <clist>]
To use the EXTERnal reference junction, the scan channel (101, 201, 301,
401, or 501) to be used for the measurement must already be configured to use
a thermistor or 4-wire RTD transducer. Otherwise, a settings conflict error
(-221) will occur. The TEMPerature:TRANsducer command is used to select
the transducer.
NOTE The following command can instead be used to select the reference
junction:
TEMPerature:RJUNction:RSELect <name> [, <clist>]
d. TEMPerature:TCouple:RJUNction:SIMulated <n> [, <clist>]
The units for the simulated reference temperature depend on the present tem-
perature measurement units as set by UNIT:TEMPerature (see Ref h).
NOTE The following command can instead be used to set the simulated ref-
erence temperature:
TEMPerature:RJUNction:SIMulated <n> [, <clist>]
2750-900-01.book Page 45 Wednesday, August 3, 2011 7:56 AM

Keithley 2750 Specifications

General

Interface	GPIB, RS-232, Ethernet
Switching Speed	Up to 500 channels/second
Maximum Voltage	300V
Operating Temperature	0°C to 50°C
Measurement Functions	DCV, ACV, DCI, ACI, 2-wire Resistance, 4-wire Resistance, Frequency, Temperature
Resolution	6.5 digits
Current	1A
Maximum Current	1A