Comtech EF Data DMDVR20 LBST Rev 1.1 User Manual
Page 56
DMDVR20 LBST Satellite Modem
User Interfaces
TM136 – Rev. 1.1
4-19
DMD
CFG
{Pass/Fail,
Unmasked/Masked}
Indicates a demodulator DSS-S2 FPGA hardware
failure.
SIGNAL LOCK
{Pass/Fail, Unmasked/Masked}
Indicates that the demod is unable to lock to a signal.
INPUT LVL THRESH {Pass/Fail, Unmasked/Masked}
Indicates Rx signal level has fallen below input
threshold.
FRAME LOCK
{Pass/Fail, Unmasked/Masked}
Indicates that the Framing Unit is unable to find the
expected framing pattern.
LB SYNTH PLL
{Pass/Fail, Unmasked/Masked}
Indicates that the Rx L-Band Synthesizer is not locked.
This alarm will flash on during certain modem parameter
changes. A solid indication points toward a configuration
problem within the modem.
FORCED
ALARM
{DISABLED,
ENABLED}
Allows user to enable a forced Rx summary alarm.
RX MINOR (menu)
BUFF UNDERFLOW {Pass/Fail, Unmasked/Masked}
Indicates that a Doppler Buffer underflow has occurred.
BUFF NEAR EMPTY {Pass/Fail, Unmasked/Masked}
Indicates that the Doppler Buffer is about to underflow.
BUFF NEAR FULL
{Pass/Fail, Unmasked/Masked}
Indicates that the Doppler Buffer is about to overflow.
BUFF OVERFLOW
{Pass/Fail, Unmasked/Masked}
Indicates that a Doppler Buffer overflow has occurred.
RX DATA ACTIVITY
{Pass/Fail, Unmasked/Masked}
Indicates that there is no Rx Data activity.
IFEC LOCK
{Pass/Fail, Unmasked/Masked}
Indicates that the Framing Unit is unable to find the
expected framing pattern.
EBNO
(dB)
{Pass/Fail,
Unmasked/Masked}
Indicates that the Eb/No are outside of limits.
COMMON
(menu)
TERR FPGA CFG
{Pass/Fail, Unmasked/Masked}
Indicates an Interface Card FPGA configuration failure.
CODEC FPGA CFG
{Pass/Fail, Unmasked/Masked}
Indicates Turbo Codec Card FPGA configuration failure.