Operating Manual EMI TEST RECEIVER ESIB7 - Rohde & Schwarz

ESIB- Receiver
ESIB
Setting the Measurement Time
The measurement time is the time during which ESIB measures the input signal and forms a
measurement result weighted by the selected detector. The measurement time does not include settling
times. ESIB automatically waits until transients are over.
CONFIGURATION MODE - EMI RECEIVER menu
MEAS TIME
The MEAS TIME softkey activates the entry field for the measurement time.
The measurement time can be set in steps of 1-2-5 in the range 100 µs to
100 s. A measurement time of 15 s is available in addition.
When the quasi-peak detector is used, the minimum measurement time is
1 ms.
With the average, RMS, AC video or min/max peak detector the smallest
settable measurement time depends on the bandwidth.
Bandwidth Shortest measurement time Shortest measurement time
AV, RMS
PK+, PK-, AC video
≤ 10 Hz 1 s 10 ms
100 Hz 100 ms 1 ms
200 Hz 50 ms 1 ms
1 kHz 10 ms 0.1 ms
9 kHz 1 ms 0.1 ms
≥ 100 kHz 0.1 ms 0.1 ms
IEC/IEEE-bus command
:[SENSe:]SWEep:TIME
Effect of measurement time with different weighting modes:
MIN/MAX PEAK measurement:
With peak weighting selected, the maximum or minimum level
during the selected measurement time is displayed. The peak
detector is reset at the beginning of each measurement. At the
end of the measurement time the maximum or minimum level
occurred during the measurement time is displayed. Since the
peak detector of ESIB is a digital detector, discharging is
irrelevant even with long measurement times.
Unmodulated signals can be measured with the shortest possible
measurement time. When pulses are measured, the selected
measurement time must be long enough for at least one pulse to
occur during the measurement time.
AC video measurement:
Since the AC video detector is a combination of a min peak and a
max peak detector, the considerations for the peak measurement
apply here too
The longer the measurement time, the better the acquisition of
the AC voltage component of the test signal.
1088.7531.12 4.84 E-15