R&S 1129.7246.03, Operating Manual

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R&S ESU Instrument Functions
Receiver Mode
4.58 Operating Manual 1302.6163.12 - 03
• TDOMAIN SCAN ( only available with the R&S ESU-K53 option)
A selection between an algorithm for pulsed signal or for CW signals can be
made.
Remote command:
SWE:SPAC LIN
Start - Entry of start frequency
The start frequency of a subrange must be equal to or greater than the stop fre-
quency of the previous subrange.
On entering the start frequency, the preceding scan range is – if necessary –
adapted automatically to avoid overlapping of scan ranges.
Remote command:
SCAN1:STAR 150 kHz
Stop - Entry of stop frequency
The stop frequency of a subrange must be equal to or greater than the start fre-
quency of the subrange.
On entering the stop frequency, the preceding scan range is – if necessary –
adapted automatically to avoid overlapping of scan ranges.
Remote command:
SCAN1:STOP 30 MHz
Step Size - Entry of step size
In the case of linear frequency increments, step widths between 1 Hz and the maxi-
mum R&S ESU frequency can be set. When a step size greater than the scan range
is entered (from start to stop), R&S ESU performs a measurement at the start and
stop frequency.
With logarithmic frequency increments, values between 0.1% and 100% can be set
with steps of 1/2/3/5.
With STEP AUTO selected, the step size cannot be changed because it is automat-
ically set with respect to the IF bandwidth.
Remote command:
SCAN1:STEP 4 kHz
RES BW - Entry of IF bandwidth
In the case of quasipeak, CISPR Average or CISPR RMS weighting, usually a fixed
bandwidth is set which cannot be changed (CISPR).
However, the coupling of the IF bandwidth to the frequency range can be cancelled
using softkey
CISPR RBW UNCOUPLED in the MEAS DETECTOR menu.
Remote command:
SCAN1:BAND:RES 9 kHz
AUTO PULSE the FFT algorithm is suitable for all types off signals -
pulsed and continuous.
AUTO CW the FFT algorithm is only suitable for continuous signals.
The measurement speed is higher than with AUTO
PULSE.