BNC 645 - Manual (Page 151)

151
VOLTage:OFFSet command) before changing the output state.
OUTPut?
“0” or “1” indicating the on/off state of the Output connector on the front panel
is returned.
OUTPut:LOAD {<ohms>|INFinity|MINimum|MAXimum}
Select the desired output termination. It can be any value (in ohms) between 1Ω
and 10kΩ. INF sets the output termination to “high impedance” (>10 kΩ). The
default is 50Ω. The specified value is used for amplitude, offset, and high/low
level settings.
• When the output termination is changed, the displayed output amplitude,
offset, and high/low levels are automatically adjusted, and no errors will
be generated.
• The waveform generator has a fixed series output impedance of 50 ohms
to the front-panel Output connector. If the actual load impedance is
different than the specified value, the displayed amplitude, offset and
high/low levels will be incorrect.
• When the output termination is set to “high impedance”, you cannot
specify the output amplitude in dBm. The unit will be automatically
converted to Vpp.
OUTPut:LOAD? [MINimum|MAXimum]
Query the current load setting in ohms. Return the current load setting or
“9.9E+37” meaning “high impedance”.
OUTPut:POLarity { NORMal|INVerted }
Invert the waveform relative to the offset voltage. The default is NORM, in which
the waveform goes positive during the first part of the cycle and in INV mode the
waveform goes negative during the first part of the cycle. The offset remains the
same when the waveform is inverted and the Sync signal is not inverted.
OUTPut:POLarity?
Query the polarity of the waveform. “NORM” or “INV” indicating the polarity will
be returned.
OUTPut:SYNC {OFF|ON}