Specifications

Section-6 Diagnostics
October 17, 2013
6‐6
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WARNING:Disconnectprimarypower priortoservicing. 888‐2693‐004
Upconverter
Temp erature
Fault
UDCOv
erTemperature
Fault
SystemandMute
LEDsred.
UDCTemp erature
below75.0C
UDCTe
mpe rature >=
75.0C.Faultwillnot
clearuntiltemperature
goesbelow70.0C
Setfa
ult;
muteRF;
disablethe
+20VDC
supplytothe
UDCoutput
amplifier
Status/
UDC
Upconverter
Te
mpe rature 
Warning
UDCOv
erTemperature
Warning
SystemLEDor
ange.
UDCTe
mpe rature 
equaltoorlessthan
72.5C
UDCTemp erature>
72.5C.Warningwill
clearifFaultgoesactive.
Setwa
rning.
Status/
UDC
ALCLimit
Re
ached
UDCAL
Cislimiting
becauseUDCADClevelis
2dBormoreaboveHigh
CalibrationPoint.
SystemLEDor
ange.
RFle
velisbelow
limitthreshold
UDCAD
Cvalueis2dBor
moreoverhigh
calibrationpowerlevel,
andALCisattemptingto
adjustRFAttenuatorto
ahighervaluethanthe
currentsetting.
(Detectedpowerlevelis
belowforwardpower
reference)
Setwa
rning
anddonot
allowALC
adjustments
thatresultin
ahigherRF
Attenvalue
thancurrent
setting.
Adjustments
thatresultin
alowerRF
Attensetting
areallowed.
Table6‐3MODFPGAFaults
FaultLog
Message
FaultDe
scription FrontPanelLEDs
NominalVa
lue/
Scaling
TripLe
vel Action
Screen/
Ta
b
ModulatorNo
t
Alive
IndicatesMODFPGAisin
knowngoodstate
SystemandMute
LEDsred.
Datapa
ttern
written/readover
HPImatches
Datapatternwritten/
readoverHPIdoes
notmatch
Setfa
ultand
muteRF.
Signal
Processor
Modulator
Te
mperature
Fault
IndicatesMO
DFPGAis
overtemperature
SystemandMute
LEDsred.
Overte
mperature
lessthan4times.85
Climit.
Overtemperature4
times(notimelimit).
85Climit
Setfa
ult,
muteRF,and
eraseMOD
andDUC
FPGAs.
Status/
Signal
Pr
ocessor
ModulatorDA
C
Clock
IndicatesDACclockis
presentinMODFPGA
SystemandMute
LEDsred.
DACcl
ockdetected
DACcl
ockisnot
detected
Setfaultand
muteRF.
Signal
Processor
Modulator
SampleCl
ock
IndicatesMODclockis
presentinMODFPGA
SystemandMute
LEDsred.
Modulatorsamp
le
clockand10MHz
internalclockedges
arebothdetected
Eithermo
dulator
sampleclockor10
MHzinternalclock
edgesarenot
detected
Setfa
ultand
muteRF.
Signal
Processor
Modulator4X
SampleCl
ock
IndicatesMODclockx4is
presentinMODFPGA
SystemandMute
LEDsred.
Modulator4x
sam
pleclockedges
aredetected
Modulator4xsample
clockedgesarenot
detected
Setfa
ultand
muteRF.
Signal
Processor
Modulator
25
MHzClock
Indicates25MHzclockis
presentinMODFPGA
SystemandMute
LEDsred.
25MHzclockedges
aredetected
25MHzclockedges
arenotdetected
Setfaultand
muteRF.
Signal
Processor
Modulator
54
MHzClock
Indicates54MHzclockis
presentinMODFPGA
SystemandMute
LEDsred.
54MHzclockedges
aredetected
54MHzclockedges
arenotdetected
Setfaultand
muteRF.
Signal
Processor
ModulatorUs
er
ForceMute
Indicatesuserhasforced
mutefromGUI
SystemandMute
LEDsred.
Mutenotselectedon
GUI
Muteselect
edonGUI
Setfa
ultand
muteRF.
Table6‐2UDCFaults
FaultLog
Message
FaultDescription FrontPanelLEDs
NominalValue/
Scaling
TripLevel Action
Screen/
Tab