Atec Rohde-Schwarz-ESPI_Series_DatasheetsЙ - Manual (Page 5)

Test Receiver ¸ESPI 5
The measurement bandwidths
The measurement bandwidths of the
¸ESPI are designed for a large variety
of applications:
The analyzer mode provides all –3 dB
bandwidths from 10 Hz to 10 MHz
(in 1/3/10 sequence). In the receiver
mode, the –6 dB bandwidths can also be
selected by softkey: 200 Hz, 9 kHz,
120 kHz plus 1 MHz bandwidth.
Moreover, approx. 40 digital channel
filters are available.
Like the detectors, the standard-conform-
ing CISPR bandwidths can be coupled as
a function of the frequency range. If
necessary, the coupling can be disabled.
The preselector/preamplifier option
(¸ESPI-B2) is available as a protec-
tion against overloading by pulsed, high-
power signals and for ensuring the valid-
ity of signal evaluation in the linear oper-
ating range of the measuring instrument.
The advantage of this option is that, in
the analyzer mode, the preselection fil-
ters or the preamplifier can be switched
on or off as required.
User-selectable parameters in
up to 10 subranges
The basis for all reproducible measure-
ments is a scan table with up to ten sub-
ranges and user-programmable fre-
quency parameters such as START, STOP,
STEP SIZE, resolution bandwidth, mea-
surement time per frequency as well as
RF attenuation setting at a constant value
or coupled to AUTO RANGE overload
monitoring. For sensitive measurements
(if low signal levels are expected), the
preamplifier can be switched on or off as
a function of the subrange.
SCAN table