R&S ESU Series, Operating Manual, Page: 54 / 855

Operating Manual 1302.6163.12 - 03 4.23
R&S ESU Instrument Functions
Receiver Mode
Remote command:
BAND:AUTO ON
FILTER TYPE
The FILTER TYPE softkey opens a list of available filter types. Gaussian bandpass
filters of 3 dB and 6 dB bandwidth as well as particularly steep-edged channel filters
for power measurements are available.
• NORMAL (3dB)
The resolution bandwidths are implemented by Gaussian filters with a set 3 dB
bandwidth. These bandwidths correspond to the noise bandwidth approximately.
For bandwidths up to 100 kHz, digital bandpass filters are used.
Remote command:
BAND:TYPE NOIS
BAND:TYPE NORM
• EMI (6dB)
The resolution bandwidths are implemented by Gaussian filters with the set 6 dB
bandwidth and correspond approximately to the pulse bandwidth.
For bandwidths up to 1 MHz, digital bandpass filters are used.
Remote command:
BAND:TYPE PULS
• CHANNEL
steep-edged channel filters
Remote command:
BAND:TYPE CFIL
• RRC
Root Raised Cosine filters
Remote command:
BAND:TYPE RRC
4.5.3.1 List of Available Channel Filters
The channel filters listed in the following table are available as resolution filters (soft-
key
RES BW ) after activation with the softkey FILTER TYPE .
NORMAL (3dB)
EMI (6dB)
CHANNEL
RRC
The two filter types CHANNEL and RRC are only available, if STEPPED SCAN is
selected in the SWEEP menu.
For filter type RRC (Root Raised Cosine) the indicated filter bandwidth describes
the sampling rate of the filter.
For all other filters (CFILter) the filter bandwidth is the 3-dB bandwidth.