Keithley 2010 User Manual

SCPI Command Reference 5-77
:VOLTage commands
:AC <name>
:UNIT:VOLTage:AC <name> Specify ACV units
Parameters <name> = V AC voltage measurement units
DB dB AC voltage measurement units
DBM dBm AC voltage measurement units
Query :AC? Query AC voltage units
Description 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 measurements
referenced to 1mW. dB and dBm measurements are explained further in
Section 2.
:DB:REFerence <n>
:UNIT:VOLTage:AC:DB:REFerence <n> Specify dBm reference
Parameter <n> = 1e-7 to 1000 Specify reference in volts
Query :REFerence?
Description This command is used to specify the dB reference level. When DB units is
selected (:VOLTage:AC: DB), ACV dB measurements are made using the
specified dB reference level.
The reference level is specified in volts and is not range dependent. For
example, a dB reference level of 1 is 1V on all ACV measurement ranges.
:DBM:IMPedance <n>
:UNIT:VOLTage:AC:DBM:IMPedance <n> Specify dB reference
Parameter <n> = 1 to 9999 Specify reference impedance
Query :IMPedance?
Description This command is used to specify the dBm reference impedance level. When
dBm units is selected, ACV dBm measurements are made using the specified
dBm reference impedance.
The reference impedance is specified in ohms and is not range dependent.
For example, a dBm reference level of 600 is 600 on all ACV measurement
ranges. A rational number is rounded to the nearest valid integer value.

Keithley 2010 Specifications

General

Frequency Range	3 Hz to 300 kHz
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	3 A
DC Current Accuracy	0.05%
AC Current Range	3 A
Resistance Accuracy	0.01%
Interface	GPIB, RS-232
Power Supply	50 Hz or 60 Hz