Rohde & Schwarz R&S FSH - Page 46

R&S FSH Measurement Equipment and Accessories for Quick Verification
1145.5973.82 2.3 E-11
Verifying the display
Test equipment None
R
&S FSH settings Switch instrument ON.
Reference measurement  Check the display for disturbance.
Verifying the level and noise
Test principle The RF attenuator of the R&S FSH can be switched from 0 to 30 dB by
changing the reference level in the instrument.
Test equipment - Signal generator (refer to section "Measurement Equipment and
Accessories for Quick Verification", item 1).
Frequency 100 MHz
Maximum level  6 dBm
Test setup  Connect the RF output of the signal generator to the input of the
R&S FSH.
Signal generator settings - Frequency 100 MHz
- Level
- 20 dBm
R&S FSH settings
- [ PRESET ]
- [ FREQ : 100 MHz ]
- [ SPAN : 10 kHz ]
- [ BW : RES BW MANUAL : 1 kHz ]
- [ BW : VIDEO BW MANUAL : 100 Hz ]
- [ TRACE : DETECTOR : RMS ]
- [ AMPT: 0 dBm ]
Verification
 Read the level and verify that it shows -20 dBm +/- 2 dB.
 Verify that the noise level in the display is < - 60 dBm.
Check 30 dB attenuation
Change signal generator setting
- Level
-30 dBm
Change R&S FSH setting
- [ AMPT : -10 dBm]
Verification
 Read the level and verify that it shows -30 dBm +/- 2 dB.
Check 10 dB attenuation
Change signal generator setting
- Level
-10 dBm
Change R&S FSH setting
- [ AMPT : 10 dBm ]
Verification
 Read the level and verify that it shows -10 dBm +/- 2 dB.
Check 0 dB attenuation
Change signal generator setting
- Level
0 dBm
Change R&S FSH setting
- [ AMPT : 20 dBm ]
Verification
 Read the level and verify that it shows 0 dBm +/- 2 dB.