Rohde & Schwarz R&S SMU200A, Руководство по обслуживанию

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Troubleshooting R&S SMU200A
1007.9845.82 3.34 E-6
Error messages concerning the module SSYN
Error message Error correction
"Synthesis OCXO 10 MHz oven cold"
If this message doesn’t vanish after 10 minutes,
OCXO is defective, change the module.
"Synchronization error on external
reference"
"Synthesis Reference PLL unlocked"
Check for correct External Reference Frequency
setting and corresponding input signal.
If input signal and frequency settings are correct and
error message is displayed anyhow, change the
module.
"Synthesis Reference 1040MHz ALC-loop
unlocked"
This error message indicates that the level control for
the 1040 MHz reference signal at X249 is unlocked.
Terminate X249 with 50 . Set RF to 100 MHz and
to 1000 MHz.
If the message disappears, cable connection or module
IQOP3 is defective.
If the message is displayed anyhow, change the module.
"Synthesis fractional-loop PLL unlocked"
"Synthesis main-loop PLL unlocked"
Change the module.
"Synthesis SFU attenuator DAC on limit"
"Synthesis OPU attenuator DAC on limit"
"Synthesis MLP adjustment failed"
"Synthesis FRA adjustment failed"
"Synthesis SFU adjustment failed"
"Synthesis OPU adjustment failed"
These errors may occur, when the internal adjustment
“Adjust Synthesis” is executed.
See above.
"Synthesis adjustment data invalid"
"Synthesis new adjustment data invalid"
"Synthesis cannot initialize adjustment
data"
"Synthesis cannot store adjustment data"
"Synthesis cannot read EEPROM data"
Try to execute Internal Adjustment “Adjust
Synthesis” anew.
If error messages continue, change module. If there
are problems with other modules too, data transfer
maybe disturbed. Try to change the DACIF module.