R&S ESU Series Operating Manual page 131

R&S ESU
5. Set the reference level of the measuring receiver to minimum 5 dB above the
maximum level of disturbance that is obtained in step 2).
6. Set the measuring receiver to the APD mode and measure the APD of the
disturbance during the measurement time that is specified by the product family
standard. The measurement time shall be longer than the period of the
disturbance.
7. Change the center frequency of measuring receiver to the next frequency
determined in step 2), then repeat the procedures of steps 4) - 6) until the APD
measurements for all frequencies are carried out.
8. Read the probabilities p
specified level E
9. Compare p
equal to p
10.Or, read the levels
11. Compare E
equal to E
Fig. 4.36 Compliance test using the APD method (cases A and B are failing, case C is passing)
Specification
The following specifications described in [
function. A rationale for these specifications is provided in Annex G of CISPR 16-1-
1[ 1 ].
Dynamic range of the
amplitude
Amplitude accurancy
Maximum measurable
time
Minimum measurable
probability
Assignment of amplitude
levels
1. Amendment 1:2005 to CISPR 16-1-1:2003 (1st Ed.): Radio disturbance and immunity measuring apparatus - Measuring apparatus
4.100
during which the disturbance envelope exceeds a
meas
from the results of step 6).
limit
against the limit
meas plimit
at all frequencies.
limit
for a given probability p
Emeas
against the limit E
meas
CISPR 16-1-1
> 60 dB
better than +- 2,7 dB
longer than or equal to 2 min 2 min (no dead time)
-7
10
at least two amplitude levels
with a resolution of 0,25 dB or
better
. The EUT complies if p
.
limit
. The EUT complies if E
limit
1 ] shall be applied to the APD measuring
R&S Test Receiver
> 70 dB
< 2,5 dB for f < 18 GHz
-7
10
no limitation by using external software
Operating Manual 1302.6163.12 - 03
Instrument Functions
APD Mode
is less than or
meas
is less than or
meas