Output Termination - Agilent Technologies 33250A User Manual

Output Termination

Applies to output amplitude and offset voltage only. The Agilent 33250A
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 and offset levels will be incorrect.
• Output termination: 1Ω to 10 kΩ, or Infinite. The default is 50Ω.
• The output termination setting is stored in non-volatile memory
and does not change when power has been off or after a remote
interface reset. When shipped from the factory, 50Ω is selected.
• If you specify a 50-ohm termination but are actually terminating into
an open circuit, the actual output will be twice the value specified.
For example, if you set the offset to 100 mVdc (and specify a 50-ohm
load) but are terminating the output into an open circuit, the actual
offset will be 200 mVdc.
• If you change the output termination setting, the displayed output
amplitude and offset levels are automatically adjusted (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.
• Front-Panel Operation: Press
softkey. Then use the knob or numeric keypad to select the desired
load impedance or press the Load softkey again to choose "High Z".
• Remote Interface Operation:
OUTPut:LOAD {<ohms>|INFinity|MINimum|MAXimum}
Chapter 3 Features and Functions
Output Configuration
and select the Output Setup
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