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Module Replacement
R&S FSP
1164.4556.82 3.54
E-1
Replacing the OCXO A200 (Option R&S FSP-B4)
(See chapter 5, spare parts list, item 1100, and drawings 1164.4391 and 1129.6791.)
The board is fitted in the front part behind the front module .
Opening the Instrument and Removing the Board
Switch off the instrument, pull the mains plug, unscrew the 4 rear-panel feet (450) and push the tube
(410) backwards and take off.
Unscrew the two countersunk screws (260) at the top of the instrument and the three countersunk screws
(250) at the fan side, lift the cover at the top (240) of the instrument to the left side and take off.
Place the instrument on the left side frame and loosen all connecting cables to board.
Push out board to the top side of the instrument.
Note:
The board can be moved up by pressing carefully from the downside through the connector
wholes in the motherboard against the board.
Installing the New Module and Completing the Instrument
Plug the new board into the instrument and reconnect all cables to the board.
Note:
Please refer to the cable wiring drawing on the motherboard.
Put the top cover (240) on the instrument and mount it with two countersunk screws (260) and 2
screws with washer (250).
Push the tube (410) on the instrument and mount the 4 rear-panel feet (450).
Connect the instrument to the mains, switch on the instrument power switch and switch on the
instrument with the ON/STANDBY key
After starting the instrument check for system messages:
-
[
SETUP
: SYSTEM INFO : SYSTEM MESSAGES
]
Start selftest and check results:
-
[
SETUP
: SERVICE : SELFTEST ], then [SELFTEST RESULT]
Start a total calibration and check the result:
-
[
CAL
: CAL TOTAL ] , then [ CAL RESULTS ]
Check frequency accuracy with chapter 1 and readjust with chapter 2 if necessary.
Create a backup of the EEPROM data (see chapter 2, section "Adjustment of Module Data").
Содержание 1164.4391.03
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