Comtech EF Data DMD-2050E Especificaciones descargar pdf (Pagina 171)

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting

MN-DMD2050E Revision 2 6–9

Alarms are grouped into transmit and receive alarms. Transmit and receive alarms are completely

independent of each other.

6.4.2 Common Equipment Alarms

Common equipment alarms occur when the unit has problems that affect both transmit and

receive operations. Most common equipment alarms occur when there is a hardware failure in

the unit, such as a malfunctioning power supply.

External reference and external clock alarms occur when a unit has a configuration problem, not

a hardware failure.

6.4.3 Latched Alarms

Latched alarms are used for intermittent failures. If a fault occurs, the fault indication is “latched”

even if the alarm goes away.

After the unit is configured and operating correctly, clear any latched alarms.

CLEAR LATCHED ((ENTER))

Press ENTER to reset the latched alarms.

These alarms are latched to catch intermittent failures:

TX MAJOR (menu)

{Pass/Fail}

TX MINOR (menu)

{Pass/Fail}

FPGA CFG TERR CLK ACT

DSP CFG TERR DATA ACT

SCT CLOCK PLL TX TERR AIS

SYM CLOCK PLL DnI FRAME LOCK

LB SYNTH PLL DnI M-FRAME LOCK

IF SYNTH PLL DROP CRC

ETHERNET WAN TX DVB FRM LOCK

TRANSEC NOT RDY TX CL,SRC FALLBK

TPC CONFLICT CHK

RX MAJOR (menu)

{Pass/Fail}

RX MINOR (menu)

{Pass/Fail}

FPGA CFG BUFF UNDERFLOW

DSP CFG BUFF NEAR EMPTY

SIGNAL LOCK BUFF NEAR FULL

INPUT LVL THRESH BUFF OVERFLOW

FRAME LOCK RX DATA ACTIVITY

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Comtech EF Data DMD-2050E Especificaciones Pagina 171