R&S SMU200A Troubleshooting
1007.9845.82 3.39 E-6
Error messages concerning the module IQOP3
Error Error correction
"Output unleveled, RMS detector cold"
The temperature control of the detector is unable to
maintain the desired temperature of 70 °C. RF Level is out
of specification. This can be checked using diagnostic
system:
Thermostat temperature is displayed using test point
SETUP - Test Point DIAG_IQOP3_RFM_TEMP_DET
100 * U
DIAG
= Thermostat temperature in degrees Celsius
If temperature deviates more than 4 °, the module is to be
replaced.
"Output unleveled: Gain Control on Upper
Limit"
"Output unleveled: Gain Control on Lower
Limit"
"Output unleveled: Gain out of Setting
Range"
Check settings, especially of attenuator mode and ALC
mode. Start anew with blue PRESET key.
Try to execute internal adjustment “Adjust Level”. See
section “Troubleshooting – Internal Adjustments”.
Check for correct input levels from SSYN or IQOP6.
"Questionable level adjustment data"
"Questionable IQOP3 I/Q adjustment
data"
"Questionable IQOP6 I/Q adjustment
data"
"Baseband adjustment failed"
"Zero adjustment failed"
"AM adjustment failed"
"IQOP3 I/Q adjustment failed"
"IQOP6 I/Q adjustment failed"
These error messages indicate problems with internal
adjustment prodedures. Retry internal adjustments (see
section “Troubleshooting – Internal Adjustments”).
If error still exists, check for correct input signals (see
above).
"Missing level adjustment data"
"Missing IQOP3 I/Q adjustment data"
"Missing IQOP6 I/Q adjustment data"
There are no data of internal adjustments. This may be the
result of problems with the hard disk. Execute internal
adjustments (see section “Troubleshooting – Internal
Adjustments”).
"Impairments DAC on limit"
The desired setting of impairments is limited. If this
happens with no impairment set, execute internal
adjustment “Adjust I/Q Modulator” (see section
“Troubleshooting – Internal Adjustments”).
"Vector Modulator: Quadrature Loop
unlocked"
The submodule RFM is defective and must be changed.
To Next Page
Loading...
