Rohde & Schwarz FSP7 - Checking Display Linearity

Performance Test R&S FSP
1164.4556.82 1.14 E-1
Checking Display Linearity
Test equipment:
- Signal generator (refer to "Measurement Equipment", item 3)
Frequency 128 MHz
Maximum level  10 dBm
- Step attenuator (refer to "Measurement Equipment", item 11)
Frequency 128 MHz
Attenuation 0 to 100 dB in 1 dB steps
Attenuation accuracy < 0.1 dB
1
)
1
) If a step attenuator with lower accuracy is used, correction
of the measured attenuation is recommended.
Test setup:  Connect RF output of the signal generator to RF input of the
step attenuator.
 Connect RF output of the step attenuator to RF input of the R&S
FSP.
Signal generator settings:
- Frequency 128 MHz
- Level +10 dBm
Step attenuator settings:
Attenuation 20 dB
R&S FSP settings:
- [ PRESET ]
- [ AMPT : RF ATTEN MANUAL : 10 dB ]
- [ AMPT : 0 dBm ]
- [ FREQ :CENTER : 128 MHz ]
- [ SPAN : 0 Hz ]
- [ TRACE : DETECTOR : RMS ]
1st measurement:
- [ BW : RES BW MANUAL : 300 Hz ]
2nd measurement:
- [ BW : RES BW MANUAL : 300 kHz ]
Reference measurement:  Set marker to peak of signal:
- [ MKR  : PEAK ]
 Set reference to peak of signal:
- [ MKR : REFERENCE FIXED ]
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 (about 10 dB below the reference level) is displayed
in the marker field by the reading ´Delta [T1 FXD]´.