P300H
P300 Modem Installation and Operating Handbook
Page 23
4
SUMMARY OF SPECIFICATIONS
Common Main Specifications
Optional features are shown in [square brackets]
Modulation
BPSK, QPSK, OQPSK, [8PSK]
Frequency/Resolution
50 MHZ - 90 MHZ, 100Hz resolution.
[50 MHZ - 180 MHZ Wideband IF feature]
Traffic Interface
Electrical
RS422, V.35 and RS232 software selectable (clocking can provide X.21
DCE or DTE mode)
Mechanical
Both EIA530 DCE and RS449 DCE connectors (25 pin and 37 pin `D`
female respectively).
Options
T1 or E1 G.703
in addition
to RS422, V.35, & RS232 (software
selectable)
For special requirements a customer specific interface card may be fitted.
User Data Rates
Closed Network
Resolution of 1 bps
Rate ½
Rate ¾
Rate
I
I
Uncoded
Rate
E
E
BPSK
min
4.8k
7.2k
8.4k
9.6k
max *
1250k
1875k
2187k
2500k
QPSK / OQPSK
min
9.6k
14.4k
16.8k
19.2k
mix *
2.5M
3.75M
4.375M
5.0M
[8PSK/TCM]
min
19.2k
mix *
5.0M
[Closed Net plus ESC]
As Closed Net above but limits include an overhead of approx 1.4 x ESC
Baud rate. Resolution of 1 bps. ESC from 50Baud to 38.4kBaud
[IBS/SMS Mode]
<9.6k to >2048k (6.7% overhead added)
*
Resolution of 1 bps
[IDR Mode]
<64k to >2048k (96k overhead added)
*
Resolution of 8k (limitation of frame structure)
*
Note: Maximum data rate is 512kbps in all modes before overheads unless the High
Data Rate option is fitted.
Forward Error
[Turbo Product Codec (TPC), Preset rates inc rate ½, ¾,
I
, & 0.789]
Correction
[TCM rate
E
to IESS 310]
[Viterbi, rate ½, ¾, or
I
, k = 7 to IESS 308/309, 3 bit soft decision
decoding]
[Sequential rate ½, ¾, or
I
to IESS 312, 2 bit soft decision decoding]