Text on Display

Tx Warn: RS Encoder FIFO slip

Tx Warn: Turbo encoder status

Tx Warn: Carrier muted as Ref settles

Tx Warn: BUC Mute as Ref settles <2Min

Tx Warn: BUC Power exceeds P1dB point

Tx Warn: Cannot hold power set at BUC

Description / Cause / Notes

Relays

To Terr

To Sat

 

 

 

 

The FIFO which interfaces the Framer to the Reed-Solomon encoder has slipped (full or empty).

 

 

 

This should never occur in operation (contact factory).

 

 

 

 

 

 

 

This is a warning used in the engineering debugging process it should not occur in the field. If it

 

 

 

does, please consult the factory.

 

 

 

 

 

 

 

This is displayed for 30 seconds from a cold start as the Tx carrier is muted while the frequency

D

 

 

reference temperature stabilises. If a power outage is less than 30 seconds, then the mute is for the

 

 

 

same period as the power outage.

 

 

 

 

 

 

 

The Modem is configured to operate with a Paradise BUC and to supply a 10MHz reference `up the

D

 

 

coax`. From a cold start the modem will switch of the BUC Tx output for 2 minutes until the internal

 

 

 

reference has settled to avoid bringing up carriers off frequency. After 2 minutes the BUC On/Off

 

 

 

status is returned to it’s previous setting. If a power outage is less than 2 minutes, then the mute if

 

 

 

for the same period as the power outage. This is different to the Tx Carrier mute above as it mutes

 

 

 

the BUC itself and will therefor mute any number of carriers transmitted through a single BUC.

 

 

 

 

 

 

 

The Modem is configured to operate with a Paradise BUC and communicate by FSK. The modem

D

 

 

has read the measured power at the BUC output and it exceeds its P1dB point of this BUC. This

 

 

 

means the BUC is approaching or is into compression, and as such may be degrading the

 

 

 

transmitted spectrum. Either back off the power or monitor the Tx spectrum very carefully.

 

 

 

 

 

 

 

The Modem is configured to operate with a Paradise BUC, communicate with the BUC by FSK, and

D

 

 

the Modem / BUC are set in `Terminal` mode where the modem maintains the power at the BUC

 

 

 

flange by adjusting both the Tx Carrier Level and where available the BUC attenuator. Currently both

 

 

 

of these adjustments are at an end stop, and the modem cannot adjust the levels any further in order

 

 

 

to try and maintain the set flange power.

 

 

 

 

 

 

 

Other

P300H

P300 Series Installation and Operating Handbook

Page 220

Page 220
Image 220
Paradise P300 specifications To try and maintain the set flange power