Rohde & Schwarz FSP3 - Page 43

R&S FSP Performance Test
1164.4556.82 1.15 E-1
Alternative measurement
R&S FSP settings:
- [ PRESET ]
- [ AMPT : RF ATTEN MANUAL : 10 dB ]
- [ AMPT : 0 dBm ]
- [ FREQ : CENTER : 128 MHz ]
- [ SPAN : 0 Hz ]
- [ TRACE : DETECTOR : AV ]
- [ SWEEP: SWEEP TIME MANUAL: xx ms ]
Depending on the attenuation a
ATT
of the step attenuator, the sweep
time is set as follows:
a
ATT
Sweep time xx
a
ATT
 50 dB 200 ms
50 dB < a
ATT
 70 dB 600 ms
a
ATT
> 70 dB 2000 ms
[MEAS: TIME DOM POWER: MEAN ]
Note: The trace averaged across all test points is used for
better averaging of the test results.
1st measurement:
- [ BW : RES BW MANUAL : 300 Hz ]
2nd measurement:
- [ BW : RES BW MANUAL : 300 kHz ]
Reference measurement:
Read the test result for the reference measurement (mean value in the
marker output field).
Use the measured mean value as the reference:
 [ MEAS : TIME DOM POWER: {right side menu}: Power Rel
Set Reference]
Measurement
Step attenuator settings:
Attenuation {a
ATT
}
Refer to "Performance Test Report" table for values of a
ATT
.
Evaluation: The difference between the level of the input signal of the R&S FSP
and the reference (approx. 10 dB below the reference level) is
displayed in the marker field by the reading ´Power [T1]´.