Paradise Datacom P300 Series Installation & Operating Handbook page 30

[Async ESC Feature] & Aux Data Channel
ESC/Aux Port
Electrical Interface
Aux Data Channel
IBS
[Async ESC Feature]
Closed Net plus ESC
IBS/SMS
[IDR Option]
IDR ESC Audio Interface
Backward Alarms
ESC/Aux Ports
ESC Port
P300H P300 Series Modem Installation and Operating Handbook
A single port provides the interface for optional high rate async ESC
(IBS/SMS or Closed Net plus ESC), or the INTELSAT low rate async
IBS ESC channel.
RS232, RS422, or RS485 external interfaces or internal link to Remote
M&C port (software selected). No external cabling required between
the ESC and M&C ports for M&C via ESC channel within overhead.
Other devices externally wired in parallel with M&C port can also be
accessed remotely.
INTELSAT low rate async ESC definition carried in bit 1 of TS32
providing a synchronous channel at 1/480th of the data rate, allowing
up to one quarter of this rate for oversampled async data. Compliant
with INTELSAT IESS 403 low rate ESC definition.
Overhead scales to provide any user specified async ESC Baud rate
whatever the satellite data rate. ESC limit is approx 70% of main
channel rate, overhead varies from <0.5% to >70%
High rate async data using from 1/32nd to 22/32nd of the IBS
overhead, providing async baud rates from 0.2% to 5.1% of the
terrestrial rate (eg up to >2400 Baud at 64 kbps). Includes modes
compatible with the P400 Series, P230 & P1300/P1361 (using 20/32nd
of the overhead).
Two 32 kbps ADPCM channels, 4 wire 600 , +7dBm to -16dBm
(software programmable in 0.1dB steps)
Outputs: Four `form C` relays
Inputs: Four protected inputs, short to 0 V to send alarm, with matching
summary Rx fail output. Alarm inputs software configurable for:
a) All external patch
b) 1=Rx fail & 2-4=External Patch
c) 1=Rx Fail & 2-4=OK
d) 1-4=Rx Fail.
When the IDR option is fitted, independent ESC & Aux ports on the
IDR option replace the single shared ESC/Aux port of the base unit.
RS232, RS422, or RS485 external interfaces or internal link to Remote
M&C port (software selected). No external cabling required between
the ESC and M&C ports for M&C via ESC channel within overhead.
Other devices externally wired in parallel with M&C port can also be
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