Quantum and Evolution Series Installation and Operating Handbook
13-8
13.9 Advanced ESC and Advanced Aux Option Specifications
Parameter
Modem
ESC/Aux Port
A single port provides the interface for optional high
rate async ESC (IBS/SMS option or Closed Net
Plus ESC) or the Intelsat low rate async IBS ESC
channel.
Electrical Interface
RS232, RS422 or RS485 external interfaces or
internal link to remote M&C port (software selected).
Other devices externally wired in parallel with M&C
port can also be accessed remotely.
Async ESC Option
Closed
Net
Plus
ESC
Overhead scales to provide any user
specified async ESC baud rate
whatever the satellite data rate. ESC
limit is approximately 70% of main
channel rate, overhead varies from
<0.5% to >70%.
IBS
option
High rate async data using from 1/32
nd
to 22/32
nd
of the IBS overhead,
providing async baud rates from 0.2%
to 5.1% of the terrestrial rate (e.g., up
to >2400 baud at 64kbps). Includes
modes compatible with the P300 and
P400 Series, P230 & P1300/P1361
(using 20/32
nd
of the overhead).
IBS Aux Data Channel
With IBS option and Advanced Aux option: Intelsat
low rate async ESC definition carried in bit 1 of
TS32 providing a synchronous channel at 1/480
th
of
the data rate, allowing up to one quarter of this rate
for over-sampled async data. Compliant with
Intelsat IESS-403 low rate ESC definition.
13.10
IDR Option Specifications
Parameter
Modem
IDR ESC Audio
Two 32kbps ADPCM channels
Interface
4-wire 600
Ω
, +7dBm to –16dBm (programmable in
0.1dB steps).
Backward Alarms
Outputs: Four “form c” relays.
Inputs: Four protected inputs, short to 0V to send
alarm with matching summary Rx fail output. Alarm
inputs software configurable for:
a) All external patch,
b) 1=Rx fail and 2-4=external patch,
c) 1=Rx fail and 2-4=OK,
d) 1-4=Rx fail
ESC/Aux Ports
When the IDR option is fitted, independent ESC &
Aux ports on the IDR option replace the single
shared ESC/Aux port on the base unit.
