Rohde & Schwarz FSP3 Service Manual page 150

Module Replacement
Temperature Adjustment and Test of the YIG Filter
A digital temperature adjustment is to be performed for the following MW converters:
MW converter unit 13/30: 1093.8249 Mod: XX Rev:
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All other MW converters should undergo analog adjustment.
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Analog adjustment:
Connect the RF output of the signal generator to the RF input of the R&S FSP.
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Activate the YIG filter sweep with the service function:
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Password
Service funct. 2.16.10.1
Span on R&S FSP30: 200 MHz
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Set the frequency of the signal generator and the center frequency to 15 GHz.
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Nominal value: Temperature drift (0 to 50°C) < 8 MHz
Adjust temperature drift with jumpers X21, X22, X23, trimming values R403, R119, R402 and
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potentiometer R232.
Digital adjustment:
Place R&S FSP30 into a climatic chamber for 2 hours at 50°C.
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Execute frequency response correction R&S FSP-FRQ.EXE.
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The software is located on the Gloris server.
Test setup according to menu item "Schematic" (connect external reference).
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Check IEC/IEEE addresses and configuration of instruments.
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Press the TK adjustment button.
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Place R&S FSP30 into a climatic chamber for 2 hours at 0°C in the switched-off state.
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Switch on the instrument and repeat the coldness adjustment.
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Adjustment of Module Data
Create a backup of the EEPROM data (see chapter 2, section "Adjustment of Module Data").
1164.4556.82
30473035
10 SubRev:
3.46
R&S FSP
01
E-1