R&S ESU Series Operating Manual page 351

R&S ESU
POWER SWEEP
Additional softkeys are available in the displayed menus for controlling an external
generator if option External Generator Control R&S FSP-B10 is fitted. For detailed
information see section
page
SOURCE ON/ The SOURCE ON/OFF softkey switches the tracking generator on or off. Default
OFF setting is OFF
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Remote command:
SOURCE The SOURCE POWER softkey allows the tracking generator output power to be
POWER selected.
The output power can be set in 0.1 dB steps from -30 dBm to +5 dBm (-100 to + 5
dBm with option R&S FSU-B12).
If the tracking generator is off, it is automatically switched on when an output power
value is entered.
The default output power is -20 dBm.
Remote command:
POWER The POWER OFFSET softkey allows selection of a constant level offset for the
OFFSET
tracking generator.
With this offset for example attenuators or amplifiers at the output connector of the
tracking generator can be taken into account for the displayed output power values
on screen or during data entry.
4.320
POWER SWP ON/OFF
START POWER
STOP POWER
"External Generator Control – Option R&S FSP-B10" on
4.333.
When the tracking generator is switched on the maximum stop frequency is
limited to 3.6 GHz. This upper limit is automatically reduced by a frequency
offset set up for the tracking generator.
In order to meet the data sheet accuracy for measurements with active tracing
generator the start frequency must be set to ≥ 3 × Resolution Bandwidth.
The minimum sweeptime for measurements with data sheet accuracy is 100 ms
in frequency domain (span > 0 Hz). Selecting a sweeptime below this limit will
result in the sweeptime indicator field SWT being supplied with a red asterisk
and the message UNCAL being displayed.
FFT filters (FILTER TYPE FFT in BW menu) are not available when the tracking
generator is active.
Tracking Generator – Option R&S FSU-B9
OUTP:STAT ON
SOUR:POW -20dBm
Operating Manual 1302.6163.12 - 03
Instrument Functions