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Performance Test
R&S FSP
116
4
.4556.82 1.30 E-1
Determining the level accuracy at 128 MHz
Test setup:
Connect power sensor (item 9) to the power meter and execute
function ´ZERO´ when there is no signal applied to the power
sensor.
Connect power sensor to RF output of signal generator.
Signal generator settings:
- Frequency 128
MHz
- Level
-30 dBm
Measurement:
determine output power of the signal generator with the power
meter.
Connect RF output of the signal generator to RF input of the
R&S FSP.
R&S FSP settings:
- [
PRESET
]
- [
AMPT
: RF ATTEN MANUAL :
10 dB
]
- [
AMPT
:
-20 dBm
]
- [
SETUP
: PREAMP ON ]
- [
SPAN
:
10 kHz
]
- [
BW
: RES BW MANUAL :
10 kHz
]
- [
TRACE
: DETECTOR : RMS ]
- [
FREQ
: CENTER :
128 MHz
]
Set marker to peak of signal:
- [
MKR
: PEAK ]
Evaluation:
The difference between the signal levels measured with the power
meter and the R&S FSP (level reading of marker 1) reflects the
absolute level accuracy of the R&S FSP. It can be calculated as
follows:
Level
accuracy
128MHz
= L
FSP
- L
powermeter
Checking frequency response
Test setup:
Connect RF output of the signal generator to input of the power
splitter.
Connect output 1 of the power splitter to the power sensor / power
meter.
Connect output 2 of the Power splitter to RF input of the R&S FSP.
Signal generator settings:
- Level 0
dBm
- Frequency 128
MHz
R&S FSP settings:
- [
PRESET
]
- [
AMPT
: RF ATTEN MANUAL :
30 dB
]
- [
AMPT
:
0 dBm
]
- [
SETUP
: PREAMP ON ]
- [
SPAN
:
100 kHz
]
- [
BW
: RES BW MANUAL :
10 kHz
]
- [
TRACE
: DETECTOR : RMS ]
- [
FREQ
: CENTER :
128 MHz
]
Содержание 1164.4391.03
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