Rohde & Schwarz 1164.4391.03, Service Manual

Page: 49 / 254

R&S FSP Performance Test
116
4
.4556.82 1.21 E-1
Performance Test Option TV and RF Trigger: R&S FSP-B6
Checking RF Trigger
Test equipment:
- Signal generator (refer to "Measurement Equipment", item 3)
Frequency
128 MHz
Test setup:
Connect test output of the signal generator to RF input of the R&S
FSP.
Signal generator settings: - Frequency 128 MHz
- Level - {L
GEN
}
- Modulation AM, 90%, 100 Hz
R&S FSP settings: - [ PRESET ]
- [ AMPT: 0 dBm ]
- [ AMPT : RF ATTEN MANUAL : 10 dB ]
- [ FREQ : CENTER : 128 MHz ]
- [ SPAN : ZERO ]
- [ TRIG : RF POWER : {L
TRG
} ]
- [ SWEEP : SWEEPTIME MANUAL : 10 ms ]
- [ MARKER : 0 s ]
Measurement: Set marker to sweep start:
- [
MKR : 0 s ]
Set trigger level L
TRG
and generator level L
GEN
(L
GEN
= L
TRG
). Check
trigger threshold using the marker.
Refer to "Performance Test Report" table for values of L
TRG
.
Checking TV Trigger
Test equipment: - TV signal source (e.g. TV antenna)
Test setup: Connect the TV signal source to the RF input of the R&S FSP.
R&S FSP settings: - [ PRESET ]
- [ AMPT : RF ATTEN MANUAL : 0 dB ]
- [ AMPT : {L
TV
} ]
- [ FREQ : CENTER : {f
TV
} ]
- [ SPAN : ZERO ]
- [ SWEEP : SWEEP TIME MANUAL: 128
µ
s ]
- [ TRIG : NEXT: TV TRIG SETTINGS: HOR SYNC ]
- [ AMPT : RANGE LINEAR ]
The frequency f
TV
is the vision carrier frequency of the TV signal.
The level L
TV
is the vision carrier level.
Evaluation:
Test lines 17 and 18 are displayed on the screen of the R&S FSP.
Note: A CCVS monitor can be connected to the CCVS IN/OUT
connector for checking the TV picture.