VOLTage Subsystem Introduction
Parameter Typical Return
{OFF|0|ON|1|ONCE}, default ON 0ξ(OFF)ξorξ1ξ(ON)
Turn voltage autoranging OFF:
VOLT:RANG:AUTO 0
l In the default mode, autoranging is enabled and the instrument automatically selects the optimal settings for the
output waveform generator and attenuator.
l With autoranging disabled (OFF), the instrument uses the instrument's current gain and attenuator settings.
l The APPLy command overrides the voltage autorange setting and automatically enables autoranging (ON).
l Disabling autoranging eliminates momentary disruptions caused by attenuator switching while changing ampli-
tude. However, the amplitude and offset accuracy and resolution (and waveform fidelity) may be adversely
affected when reducing the amplitude below the expected range change.
l If a VOLTage:COUPle[:STATe] is ON, changing this setting on either channel changes it on both.
[SOURce[1|2]:]VOLTage:UNIT {VPP|VRMS|DBM}
[SOURce[1|2]:]VOLTage:UNIT?
Selects the units for output amplitude.
Parameter Typical Return
{VPP|VRMS|DBM}, default VPP VPP, VRMS, or DBM
Set output amplitude units to Vrms:
VOLT:UNIT VRMS
l Does not affect offset voltage (VOLTage:OFFSet), high level (VOLTage:HIGH) or low level (VOLTage:LOW). They all
use units of volts.
l The instrument uses the current units selection for both front panel and remote interface operations. For exam-
ple, if you select "VRMS" from the remote interface (VOLTage:UNIT VRMS), the units are displayed as "VRMS" on
the front panel.
l Command applies to VOLTage? query results.
l Output units for amplitude cannot be set to dBm if the output termination is set to "high impedance." The units
are automatically converted to Vpp.
l Arbitrary waveform sequences do not accept units of Vrms or dBm.
l Unless you specify the units as part of either the VOLTage command or one of the APPLy commands, the VOLT-
age:UNIT command takes precedence. For example, if you select VOLTage:UNIT VRMS and do not include units
with an APPLy command, the <amplitude> in the APPLy command will be in "Vrms".
326 Agilent 33500 Series Operating and Service Guide
To Next Page
Loading...
Need help?
General
