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Manual Adjustment
R&S FSP
1164.4556.82 2.6
E-1
Adjusting the frequency accuracy
Preparation:
The measurement can be performed either with a signal generator at
connector RF INPUT (front of R&S FSP) at 1 GHz or at connector EXT
REF OUT (rear of R&S FSP) at 10 MHz using a frequency counter
For the adjustment, the R&S FSP must be set to internal reference.
Note:
The measurement at 1 GHz can be performed with a lower frequency
counter resolution in order to achieve a faster adjustment.
Preparations for adjustment with signal generator:
Test equipment:
- Signal generator (Section "Measurement Equipment", item 2):
frequency
1000
MHz
level
-20
dBm
frequency
accuracy
<1x10
-9
If the frequency accuracy of the signal generator is not sufficient,
adjust the frequency with a frequency counter to the correct frequency
before the adjustment.
Test setup:
connect RF output of the signal generator to RF input of the
R&S FSP
R&S FSP settings:
- [
PRESET
]
- [
FREQ
: CENTER :
1 GHz
]
- [
SPAN
:
0 Hz
]
- [
BW
: RES BW MANUAL :
1 MHz
]
- [
AMPT
: REF LEVEL :
-20 dBm
]
- [
AMPT
: RF ATTEN MANUAL :
10 dB
]
- [
SETUP
: REFERENCE INT / EXT ]
toggle to internal reference (INT)
Note:
Before the following measurement, the FSP must warm up for at least
30 minutes to heat the reference oscillator.
Measurement:
switch on marker frequency counting:
- [
MKR
: SIGNAL COUNT ]
Set the necessary resolution:
Model without OCXO (Option B4)
1 GHz ± 1 kHz
-[
MKR
:
NEXT
: CNT RESOL 100 HZ]
Model with OCXO (Option B4)
1 GHz ± 100 Hz
-[
MKR
:
NEXT
: CNT RESOL 10 HZ]
Содержание 1164.4391.03
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