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HP 33120A User Manual

HP 33120A
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Output Termination
Applies only to 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.
Output termination:
50 or High impedance. The default is 50.
See the table on page 59 for a list of amplitude limits for all functions.
The output termination setting is stored in volatile memory; 50
is
selected when power has been off or after a remote interface reset.
The amplitude (or dc offset) is automatically adjusted (and no error is
generated) if you change the output termination. For example, if you
set the amplitude to 10 Vpp and then change the termination from
50 ohms to “high impedance”, the displayed amplitude will double
to 20 Vpp. If you change from “high impedance” to 50 ohms, the
displayed amplitude will drop in half.
If you specify a 50 ohm termination but are actually terminating into
an open circuit, the displayed 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 displayed offset will be 200 mVdc.
Front-Panel Operation: Choose “
50 OHM” or “HIGH Z” from the
front-panel menu.
1: OUT TERM (SYS MENU)
Remote Interface Operation:
OUTPut:LOAD {50|INFinity|MINimum|MAXimum}
3
Chapter 3 Features and Functions
Output Configuration
65

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HP 33120A Specifications

General IconGeneral
Frequency Range100 µHz to 15 MHz
WaveformsSine, Square, Triangle, Ramp, Arbitrary
Amplitude Range10 mVpp to 10 Vpp into 50 Ohms
Output Impedance50 Ohms
InterfaceGPIB
Function Generator TypeArbitrary
Power Requirements100/120/220/240 VAC ±10%, 50/60 Hz, 60 VA max

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