P300H P300 Series Installation and Operating Handbook

Text on Display

UNIT FAULTS (Top+Bottom lines of display)

Description / Cause / Notes

Unit Faults: Status LED=Red, & Unit Fault (prompt) relay

Actions (see notes at end of table)

Relays	To Terr	To Sat	Other

Software Initialising please wait

Unit Fault: Tx carrier muted, unit temp <nn>C outside operating range 0-60C

Unit Fault: PSU fault on <line>, now <nnn>%

Unit Fault: Internal LCA programming error (cycle power supply)

Unit Fault: Internal fault, consult factory

Unit Fault: Tx IF synth failure, Tx carrier muted

Unit executing power up sequence (<5 secs)

This message refers to the internal unit temperature, Check the modem vent slots are clear and the rear fan has not failed. This may be disabled, see Fault Mode = 8 in Appendix E

The failed PSU line is shown together with its current value in % of nominal. The unit has a linear supply and will fail if the mains input is below the specified minimum level. Check the mains voltage. Check the internal PCB mounted Low Voltage fuses.

Internal hardware has failed to initialise, disconnect the mains, wait 5 seconds and then connect it again. If the fault persists see note 8.

See note 8

The synthesiser which generates the Tx IF carrier has failed. The unit has muted the Tx IF output to prevent transmitting an incorrect signal. An external 10MHz station reference may be used as the synthesizer reference, so if the station reference is in use check the it is present and has clean enough phase noise for its intended use.

U,T,D

TA,TC

CM !

CM,TF

Unit Fault: Tx carrier generation failure, Tx carrier muted

Unit Fault: Rx IF synth failure

Unit Fault: Rx PLL internal backup reference has failed

Unit Fault: Rx PLL Clock generation failure (<source>/int)

Modem/BUC Fault: FSK Comms with BUC

failed (searching BUC address: xx)

BUC Fault: Outside operating temperature range (now xx)

The power detector on the generated Tx carrier indicates a carrier generation failure. The unit has muted the Tx IF output to prevent transmitting an incorrect signal. See note 8.

The synthesiser which generates the LO to receive the Rx carrier has failed. An external 10MHz station reference may be used as the synthesizer reference, so if the station reference is in use check the it is present and has clean enough phase noise for its intended use.

The internal backup reference to the Rx PLL has itself failed. This is only actually used when the external reference sources have failed, however it’s failure is very significant as the same signal is used in many places within the modem. See note 8.

The internal backup clock, generated by the Rx PLL has itself failed. This is only actually used when the external primary clocks sources have failed, however it’s failure is very significant as it should never fail as it is internally generated. See note 8.

The Modem is configured to operate with a Paradise BUC, and FSK communications between the modem and BUC have failed. The modem will sequentially search the available range of BUC addresses in case a replacement BUC set for a different address has been installed

The Modem is configured to operate with a Paradise BUC. When the Modem reads the BUC temperature by FSK and the BUC is outside it’s operating temperature.

U		CM !	CM,TF

U	TA,TC		RF

U	TA,TC		RF

U	TA,TC		RF

U	TF

U	TF		BM

P300H

P300 Series Installation and Operating Handbook

Page 215

Paradise specifications P300H P300 Series Installation and Operating Handbook

Models: P300