Unit Subsystem - Keithley 2002 User Manual

3.24 :UNIT subsystem

Parameters
Query
Description
Program fragment
Query
Description
Program fragment
Parameters
Query
The UNIT subsystem is used to configure and control the measurement units for TEMP and
ACV, and is summarized in Table 3-16.
:TEMPerature <name>
:UNIT:TEMPerature <name>
<name> = C or CEL °C temperature units
F or FAR °F temperature units
K K temperature units
TEMPerature? Query temperature units
This command is used to specify the units for temperature measurements.
PRINT #1, "output 16; :unit:temp f; temp?"
PRINT #1, "enter 16"
:AC <name>
:UNIT:VOLTage:AC <name>
<name> = V AC voltage measurement units
DB dB AC voltage measurement units
DBM dBm AC voltage measurement units
:AC? Query AC voltage units
This command is used to select the units for ACV measurements. With volt (V) units selected,
normal AC voltage measurements are made for the ACV function. With DB units selected, AC
dB voltage measurements are performed. The DBM units selection is used to make decibel mea-
surements referenced to 1mW. dB and dBm measurements are explained in paragraph 2.4.1
(UNITS).
PRINT #1, "output 16; :unit:volt:ac db; ac?"
PRINT #1, "enter 16"
:DB:REFerence <n>
:UNIT:VOLTage:AC:DB:REFerence <n>
<n> = 0.001 to 750
DEFault
MINimum
MAXimum
:REFerence?
:REFerence? DEFault
:REFerence? MINimum
:REFerence? MAXimum
Specify TEMP units
Specify ACV units
Specify dBm reference
Specify reference in volts
1V reference
0.001V reference
750V reference
IEEE-488 Reference
' Select °F for TEMP
' Get response message from 2002
' Select dB units for ACV
' Get response message from 2002
3-159