R&S ESU Series - Page 53

R&S ESU Instrument Functions
Receiver Mode
4.22 Operating Manual 1302.6163.12 - 03
When the quasipeak detector, the CISPR-AV detector, or the CISPR-RMS detector
are switched on, a fixed bandwidth is preset depending on the frequency. The cou-
pling of the IF bandwidth to the frequency range with activated quasipeak, CISPR
Average or CISPR RMS detector can be cancelled using the CISPR RBW UNCOU-
PLED softkey (see below).
The bandwidth is limited by the set receive frequency:
RES BW ≤ f
in
/2
Remote command: BAND 1 MHz
200 Hz
The 200 Hz softkey sets the CISPR bandwidth 200 Hz.
Remote command: BAND 200 Hz
9kHz
The 9 kHz softkey sets the CISPR bandwidth 9 kHz.
Remote command: BAND 9 kHz
120 kHz
The 120 kHz softkey sets the CISPR bandwidth 120 kHz.
Remote command: BAND 120 kHz
1MHz
The 1 MHz softkey sets the 6-dB bandwidth 1 MHz.
Remote command: BAND 1 MHz
CISPR RBW
UNCOUPLED
The CISPR RBW UNCOUPLED softkey cancels the coupling of the IF bandwidth to
the frequency range with the activated quasipeak detector, CISPR Average or
CISPR RMS detector.
If the coupling is cancelled, any of the 4 CISPR bandwidths (200 Hz, 9 kHz, 120
kHz, 1 MHz) can be selected for a given frequency range.