R&S ESU Series, Operating Manual

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Operating Manual 1302.6163.12 - 03 4.319
R&S ESU Instrument Functions
Tracking Generator – Option R&S FSU-B9
4.10 Tracking Generator – Option R&S FSU-B9
During normal operation (without a frequency offset), the tracking generator emits a
signal exactly at the input frequency of the R&S ESU.
For frequency-converting measurements it is possible to set a constant frequency
offset of ±200 MHz between the receive frequency of the R&S ESU and the output
signal of the tracking generator.
Moreover, an I/Q modulation or AM and FM modulation of the output signal can be
provided using two analog input signals.
The output power is level-controlled and can be set in 0.1 dB steps in a range from -
30 dBm to +5 dBm (-100 to + 5 dBm with option R&S FSU-B12).
The tracking generator can be used in all operating modes. Acquisition of test setup
calibration values (SOURCE CAL) and normalization using these correction values
(
NORMALIZE ) is only possible in the NETWORK operating mode.
The tracking generator is activated by means of the NETWORK hotkey in the hotkey
bar at the bottom of the screen (for details refer to section “Mode Selection – Hotkey
Bar” on page 4.9 .)
4.10.1 Tracking Generator Settings
The NETWORK hotkey opens a menu for selecting the functions of the tracking
generator.
NETWORK
The RF characteristics of some DUTs is especially sensitive concerning the input
VSWR. In such cases insertion of 20 dB attenuation between the DUT and the
tracking generator output is highly recommended.
SOURCE ON/OFF
SOURCE POWER
POWER OFFSET
SOURCE CAL
!
CAL TRANS
CAL REFL SHORT
CAL REFL OPEN
NORMALIZE
REF VALUE POSITION
REF VALUE
RECALL
SAVE AS TRD FACTOR
FREQUENCY OFFSET
MODULATION EXT AM
EXT FM
EXT I/Q
MODULATION OFF