R&S FSP Manual Adjustment
1164.4556.82 2.7 E-1
Preparation for adjustment with frequency counter:
Test equipment:
Frequency counter (Section "Measurement Equipment", item 1):
error < 1x10
-
9
frequency range up to 10 MHz
Test setup: connect frequency counter to 10-MHz reference output of the R&S
FSP (rear panel)
R&S FSP settings:
- [SETUP : REFERENCE INT / EXT ]
toggle to internal reference (INT)
frequency counter settings:
Set the necessary resolution:
model without OCXO (option R&S FSP-B4): 1 Hz
model with OCXO (option R&S FSP-B4): 0.1 Hz
Note:
Before the following measurement, the R&S FSP must warm up at
least 30 minutes to heat the reference oszillator.
Measurement: measure frequency with frequency counter:
nominal frequency:
model without OCXO (option R&S FSP-B4)........10 MHz ± 10 Hz
model with OCXO (option R&S FSP-B4)...............10 MHz ± 1 Hz
Adjustment:
IMPORTANT NOTE !
The following adjustment changes the frequency of the internal
reference source. Since this adjustment influences the frequency
accuracy of the R&S FSP, it is strongly recommended to perform this
adjustment only if the frequency is not within the tolerance.
R&S FSP settings:
- [ SETUP : SERVICE : ENTER PASSWORD : 894129 ENTER ]
- [ SETUP : SERVICE : REF FREQUENCY ]
The correction value for the reference frequency adjust will be
displayed in the data entry field. Change the value with the step
keys or spin wheel until the frequency counter reading or the
marker count reading displays a value within the tolerance.
Store value in instrument
- [ SETUP : SERVICE : SAVE CHANGES ]
Confirm message on display with ´YES´ . The correction values will
be stored in the non volatile memory of the boards.
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