B&K Precision 5492BGPIB - Manual - Manual (Page 94)

SCPI Command Reference
94
6.3.6 UNIT Subsystem
The UNIT subsystem is used to configure and control the measurement units for ACV and DCV,
summarized in Table 6-6.
Table 6-6 UNIT Command Summary
Command Function description Default
:UNIT
:VOLTage
:AC
:DB
:REFerence
:REFerence?
:DBM
:IMPedance
:IMPedance?
:AC?
:DC
:DB
:REFerence
:REFerence?
:DBM
:IMPedance
:IMPedance?
:DC?
Path to configure voltage unit
Select ACV measurement units (V, DB or DBM）
Path to set DB reference voltage
Specify reference in volts (1e-7 to 1000)
Query DB reference
Path to set DBM reference impedance
Specify reference impedance (1 to 9999)
Query DBM reference impedance
Query ACV units
Select DCV measurement units(V, DB, DBM)
Path to set DB reference voltage:
Specify reference in volts (0 to 1000)
Query DB reference voltage
Path to set DBM reference impedance:
Specify reference impedance(1e-7 to 1000)
Query DBM reference impedance
Query DCV units
V
1
75
V
1
75
:VOLTage:AC
Command Syntax:
:UNIT:VOLTage:AC
Command parameter:
= V AC voltage measurement units
DB dB AC voltage measurement units
DBM dBm AC voltage measurement units
Query:
:VOLTage:AC? Query AC voltage units
Returned String:
V, DB, or DBM
Description:
The command is used to select the units for ACV measurement. With volt (V) unit selected, normal
AC voltage measurement are made. With DB unit selected, AC dB voltage measurements are
performed. With DBM units selected, AC dBm voltage measurements are made.