Specifications

5/9/13 888-2857-001 6-9
WARNING: Disconnect primary power prior to servicing.
Section 6 Diagnostics
Platinum VAX-C Series
Modulator Input D Indicates input D
is present in MOD
FPGA. ATSC
SMPTE B
System LED red.
TS Input LED
yellow or red.
MPEG sync
indicator = 1
MPEG sync indicator = 0
AND
input D selected for primary or
auxiliary input
Modulator Input Signal
Loss
Indicates required
inputs are not
present in MOD
FPGA.
System and Mute
LEDs red.
Depends on
modulation
standard. Relevant
inputs present.
CTTB:
SFN mode AND unmute_nosip =
false AND selected input not present
Modulation Mute Indicates
modulator FPGA
has muted
System and Mute
LEDs red.
Depends on
modulation
standard.
Modulator not
muted, other
conditions ok
CTTB:
ATSC (modulation specific)
Modulator Input A Indicates input A
is present in MOD
FPGA. ATSC ASI
HPA
System LED red.
TS Input LED
yellow or red.
MPEG sync
indicator = 1
MPEG sync indicator = 0
AND
input A selected for primary or
auxiliary input
Modulator Input C Indicates input C
is present in MOD
FPGA. ATSC ASI
LPB
System LED red.
TS Input LED
yellow or red.
MPEG sync
indicator = 1
MPEG sync indicator = 0
AND
input C selected for primary or
auxiliary input
Modulator Input B Indicates input B
is present in MOD
FPGA. ATSC
SMPTE A
System LED red.
TS Input LED
yellow or red.
MPEG sync
indicator = 1
MPEG sync indicator = 0
AND
input B selected for primary or
auxiliary input
Modulator Input D Indicates input D
is present in MOD
FPGA. ATSC
SMPTE B
System LED red.
TS Input LED
yellow or red.
MPEG sync
indicator = 1
MPEG sync indicator = 0
AND
input D selected for primary or
auxiliary input
Modulator Input Signal
Loss
Indicates required
inputs are not
present in MOD
FPGA.
System and Mute
LEDs red.
Depends on
modulation
standard. Relevant
inputs present.
ATS C:
Modulation Mute Indicates
modulator FPGA
has muted
System and Mute
LEDs red.
Depends on
modulation
standard.
Modulator not
muted, other
conditions ok
ATS C:
ISDB-T (modulation specific)
Modulator Input A Indicates input A
is present in MOD
FPGA. ATSC ASI
HPA
System LED red.
TS Input LED
yellow or red.
MPEG sync
indicator = 1
MPEG sync indicator = 0
AND
input A selected for primary or
auxiliary input
Table 6-3 MODFPGA Modulation Specific Faults
Fault Log Message Fault Description Front Panel LEDs
Nominal Value/
Scaling
Trip Level