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Manual Adjustment
R&S FSP
1164.4556.82 2.4
E-1
Adjusting the level measurement accuracy
Test equipment:
- Signal generator (Section "Measurement Equipment", item 2):
frequency 128
MHz
level -30
dBm
- power meter (Section "Measurement Equipment", item 3)
- power sensor (Section "Measurement Equipment", item 4)
frequency 128
MHz
maximum power
P
max
1
P
W
meter noise
20 pW
RSS 0.8% referred to indicated power
impedance Z = 50
Power meter settings:
connect power sensor to power meter and carry out function
´ZERO´ when no signal is applied to the power sensor.
connect power sensor to RF output of signal generator.
Signal generator settings:
- frequency 128
MHz
- level
–30 dBm ± 0.05 dB
use power meter for exact level adjustment.
Test setup:
connect RF output of the signal generator to RF input of the
R&S FSP
Overall calibration of R&S
FSP:
- [
PRESET
]
- [
CAL
: CAL TOTAL
]
R&S FSP settings:
- [
FREQ
: CENTER :
128 MHz
]
- [
SPAN
:
15 kHz
]
- [
BW
: RES BW MANUAL :
10 kHz
]
- [
BW
: VID BW MANUAL :
1 kHz
]
- [
TRACE
: DETEKTOR : RMS ]
- [
AMPT
: REF LEVEL :
-20 dBm
]
- [
AMPT
: RF ATTEN MANUAL :
10 dB
]
Reference measurement
set marker to peak of signal
-[
MKR SEARCH
: PEAK ]
set reference to peak of signal
-[
MKR
: REFERENCE FIXED ]
switch internal reference generator to RF input
- [
SETUP
: SERVICE : INPUT CAL ]
set marker to peak of signal
- [
MKR
: PEAK ]
Adjustment:
The reading ´Delta [T1 FXD]´ displays the difference between the
output level of the signal generator and the level of the calibration
source.
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