Remote Interface Reference 4
Keysight 33210A User’s Guide 199
The OUTPut {OFF|ON} command changes the state of the output connector by
switching the output relay. However, this command does not zero the voltage to
be output before switching the relay. Thus, the output signal may have “glitches”
for about a millisecond until the signal stabilizes. You can minimize these glitches
by first setting the amplitude to the minimum (using the VOLTage command) and
the offset to zero (using the VOLTage:OFFSet command) before changing the
output state.
OUTPut:LOAD {<ohms>|INFinity|MINimum|MAXimum}
OUTPut:LOAD? [MINimum|MAXimum]
Select the desired output termination (i.e., the impedance of the load attached to
the output of the Keysight 33210A). The specified value is used for amplitude,
offset, and high/low level settings.
You can set the load to any value from 1
Ω
to
10 k
Ω
.
MIN
selects 1
Ω
. MAX selects 10 k
Ω
.
INF sets the output termination to
“high impedance” (>10 k
Ω)
.
The default is 50
Ω
.
The :LOAD? query returns the
current load setting in ohms or “9.9E+37” (for “high impedance”).
– The Keysight 33210A has a fixed series output impedance of 50 ohms to the
front-panel Output connector. If the actual load impedance is different than
the value specified, the displayed amplitude, offset, and high/low levels will be
incorrect.
– If you change the output termination setting, the displayed output amplitude,
offset, and high/low levels are automatically adjusted
(and no error will be
generated). For example, if you set the amplitude
to 10 Vpp and then change
the output termination from 50 ohms to
“high impedance”, the amplitude
displayed on the function generator’s
front-panel will
double
to 20 Vpp. If you
change from “high impedance
” to 50 ohms, the displayed amplitude will drop
in half.
– You cannot specify the output amplitude in dBm if the output termination is
currently set to “high impedance”. The units are automatically converted to
Vpp. See the VOLT:UNIT command on page 201 for more information.
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