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Agilent E1441A SCPI Command Reference 87
Chapter 3
OUTPut
Subsystem
Syntax
OUTPut
:LOAD 50 | INFinity | MINimum | MAXimum
:LOAD? MINimum | MAXimum
:SYNC OFF | ON
:SYNC?
:TRIGger:IMMediate
:TRIGger:STATe OFF | ON
:TRIGger:STATe?
:TTLTrg<n>[:STATe] <mode>
:TTLTrg<n>[:STATe]?
:LOAD
OUTPut:LOAD 50|INFinity|MIN|MAX selects the output termination for output
amplitude and offset voltage. The function generator has a fixed output impedance
of 50 ohms on the "Output" terminal. You can specify whether you are terminating
the output into a 50 ohm load or an open circuit. Incorrect impedance matching
between the function generator and your load will result in an amplitude or offset
which does not match the specified signal level. The output load setting is stored in
volatile memory.
Parameters
Comments • The amplitude (or dc offset) is automatically adjusted if you change the output
termination (and no error is generated). For example, if you set the amplitude
to 10 Vpp and then change the termination from 50 ohms to “high impedance”,
the amplitude will double to 20 Vpp. If you change from “high impedance” to
50 ohms, the amplitude will drop in half.
• If you specify a 50 ohm termination but are actually terminating into an open
circuit, the output will be twice the value specified. For example, if you set the
offset to 100 mVdc (and specify a 50 ohm termination) but are actually
terminating the output into an open circuit, the actual offset will be 200 mVdc.
• *RST Condition: OUTPut:LOAD 50
:LOAD?
OUTPut:LOAD? [MIN|MAX] queries the output impedance. Returns “50” or
“9.9E+37”.
Parameter Name Sets output termination to:
50 (default) 50Ω
INFinity "high impedance"
MIN 50Ω
MAX "high impedance"