Cispr Average Detector (Cispr Av) - Rohde & Schwarz ESIB7 Manuel D'utilisation

CISPR Average Detector (CISPR AV)

The weighting modes that can be selected have been extended by the detector CISPR Average.
CONFIGURATION MODE -
EMI RECEIVER menu:
MAX PEAK
DETECTOR
QUASIPEAK
MIN PEAK
AC VIDEO
COUPLED
CISPR AV detector
Frequency range
IF bandwidth
Lowpass time constant
1088.7490.01
TRACE menu:
DETECTOR
DETECTOR
AVERAGE
CISPR
AVERAGE
RMS
QP RBW
For the measurement of the average according to CISPR 16-1,
the maximum value of the linear average value is displayed
during the measurement time. It is used for the measurement
of pulsed sinusoidal signals with low pulse frequency, for
example. The maximum value is calibrated with the rms value
of an unmodulated sinusoidal signal.
On the ESIB, averaging is done with lowpass filters of the 2nd
order (simulation of a mechanical instrument). The lowpass
time constants and the IF bandwidths are fixed depending on
the frequency. The main parameters are listed in the following
table:
CISPR Band A
9 kHz to 150 kHz
200 Hz
160 ms
DETECTOR
The DETECTOR softkey opens a
submenu to select the detector.
MAX PEAK
Multiple detection is activated by
switching on up to four single
QUASIPEAK detectors.
The MIN PEAK, RMS and AC
AVERAGE
VIDEO
switched on simultaneously.
CISPR
AVERAGE
The
AVERAGE detector cannot be
RMS
switched on simultaneously.
FINAL
Softkey AC VIDEO is available
MAX PEAK
only if the instrument is equipped
with the linear video output
FINAL
QUASIPEAK
(option ESIB-B1).
FINAL
AVERAGE
FINAL
CISPR AV
FINAL
RMS
CISPR Band B
150 kHz to 30 MHz
9 kHz
160 ms
B
detector cannot
AVERAGE and CISPR
CISPR Band C/D
30 MHz to 1000 MHz
120 kHz
100 ms
be
E-10