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Technical Specifications
7.3 Demodulator/Receive Specifications
Frequency:
Frequency Resolution:
Carrier Acquisition:
Input Carrier Range:
Aggregate Power:
Impedance:
Return Loss:
Output Voltage:
Output Current:
10 MHz Reference Levels:
Connector:
Typical Eb/No (Viterbi)
-5
@ BER=10
-7
@ BER=10
Typical Eb/No (Trellis 8PSK)
-5
@ BER=10
-7
@ BER=10
Typical Eb/No, @ 64 Kbps
Sequential
-5
@ BER=10
-7
@ BER=10
Note: Eb/No typical values include effect of using differential encoding and V.35
scrambler.
Descrambler:
Data Buffering:
Terrestrial Interfaces:
B.T1.AMI
7.4 Alarms
Summary Alarms:
7.5 Front Panel LED Indicators
Unit:
Demodulator:
Modulator:
7-2
DMD2401 LB/ST L-Band Satellite Modem and ODU Driver
950 – 1750 MHz
100 Hz
± 30 kHz
-65 to -40 dBm (Symbol Rate < 64 kHz)
-50 to -30 dBm (Symbol Rate > 640 kHz)
Minimum of -10 dBm or 35 dBc
50Ù
8 dB Minimum
24 V
5 A
-10 dBm, ± 5 dB
Type-F
Rate 1/2
Rate 3/4
5.1
6.2
6.2
7.7
Rate 2/3
7.2
8.9
Rate 1/2
Rate 3/4
4.0
5.0
4.9
5.9
Intelsat V.35, mode selectable
8 bits to 262,144 bits, in 8-bit steps
RS-449/-422, RS-232, V.35, V.E1, B.E1, B.T1.B825,
Two separate Form-C Contacts available at the rear
panel. Each provides a summary alarm of fault
conditions.
Power
Alarm
Event
Remote
Signal Lock
Major Alarm
Minor Alarm
Test Mode
Transmit On
Major Alarm
Minor Alarm
Test Mode
Rate 7/8
7.5
8.6
Rate 7/8
6.1
7.4
TM075 – Rev. 1.3
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