R&S ESU Series - Page 351

R&S ESU Instrument Functions
Tracking Generator – Option R&S FSU-B9
4.320 Operating Manual 1302.6163.12 - 03
SOURCE ON/
OFF
The SOURCE ON/OFF softkey switches the tracking generator on or off. Default
setting is OFF
Remote command: OUTP:STAT ON
SOURCE
POWER
The SOURCE POWER softkey allows the tracking generator output power to be
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: SOUR:POW -20dBm
POWER
OFFSET
The POWER OFFSET softkey allows selection of a constant level offset for the
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.
POWER SWEEP POWER SWP ON/OFF
START POWER
STOP POWER
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 “External Generator Control – Option R&S FSP-B10” on
page 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.