Specifications

5/9/13 888-2857-001 6-11
WARNING: Disconnect primary power prior to servicing.
Section 6 Diagnostics
Platinum VAX-C Series
Digital
Upconvertor
Temperature
Indicates digital
upconverter FPGA is over
temperature
System and Mute
LEDs red.
Over temperature
less than 4 times. 85
C limit.
Over temperature 4 times (no
time limit). 85 C limit
Digital
Upconvertor
Input Signal
Zero
DUC input signal level is
very low
System and Mute
LEDs red.
RMS of signal
greater than 0.1
(full scale = +/- 1.0)
RMS of signal less than 0.1
(full scale = +/- 1.0) 5 times in
a row (1 second interval)
Digital
Upconvertor
Temperature
Warning
DUC FPGA Temperature
over limit
VAX: System LED
orange.
DUC FPGA
temperature less
than 80 degrees C
(DUC FPGA over 80 C OR
Temperature reading error)
AND
ERRF_DUC_FPGA_TEMP =
false
Table 6-5 DSP Faults
Fault Log Message Fault Description
Front Panel
LEDs
Nominal Value/
Scaling
Trip Level
Adaptive Correction
Linear
DSP reports HPF feedback invalid
(required for linear RTAC)
System LED red. DSP reports HPF
feedback ok.
DSP reports HPF
feedback invalid.
Adaptive Correction
Nonlinear
DSP reports HPA feedback
invalid (required for non-linear
RTAC)
System LED red. DSP reports HPA
feedback ok.
DSP reports HPA
feedback invalid.
Adaptive Correction
Linear RF Level High
RF attenuator level is too high for
linear
System LED red. RF attenuator
level < 10%
RF attenuator level
> 104%
Adaptive Correction
Nonlinear RF Level
High
RF attenuator level is too high for
non-linear
System LED red. RF attenuator
level < 10%
RF attenuator level
> 104%
Adaptive Correction
Linear RF Level Low
RF attenuator level is too low for
linear
System LED
orange.
RF attenuator
level > 10%
RF attenuator level
< 10%
Adaptive Correction
Nonlinear RF Level
Low
RF attenuator level is too low for
non-linear
System LED
orange.
RF attenuator
level > 10%
RF attenuator level
< 10%
Table 6-4 EXT I/O & DUC Faults
Fault Log
Message
Fault Description Front Panel LEDs
Nominal Value/
Scaling
Trip Level