Comtech EF Data DD2401 VME - Manual (Page 79)

DD2401 VME L-Band Demodulator Card Installation & Operational Manual Technical Specifications
MN-VME2401 – Rev. B 7-1
Technical Specifications 7
7.0 Introduction
This section defines the technical performance parameters and specifications for the
DD2401 VME L-Band Demodulator Card .
7.1 Receive Data Rates
BPSK: 1/2 Rate 2.4 to 1200 Kbps
BPSK: 3/4 Rate 2.4 to 1800 Kbps
BPSK: 7/8 Rate 2.4 to 2100 Kbps
QPSK: 1/2 Rate 9.6 to 2500 Kbps
QPSK: 3/4 Rate 14.4 to 3750 Kbps
QPSK: 7/8 Rate 16.8 to 4375 Kbps
OQPSK: 1/2 Rate 9.6 Kbps to 2500 Kbps
OQPSK: 3/4 Rate 14.4 Kbps to 3750 Kbps
OQPSK: 7/8 Rate 16.8 Kbps to 4375 Kbps
(Optional) 8PSK: 2/3 Rate 64 Kbps to 5000 Kbps
Data Rate Setting:
Selectable in 1 bps steps
7.2 Demodulator Specifications
Frequency Range:
950 – 1750 MHz, in 1 Hz steps
Input Carrier Level: -65 to -40 dBm (Symbol Rate < 64kHz)
-50 to -30 dBm (Symbol Rate > 640kHz)
Acquisition/Tracking: ±1 kHz to ± 42 kHz, 1 kHz steps
Reacquisition range: ±1 kHz to ± 42 kHz, 1 kHz steps
IF Input Impedance: 50 Ohm SMA
Return Loss: 14 dB (minimum)
FEC: Viterbi - 1/2, 3/4, and 7/8 Rate Viterbi, K = 7
8PSK - 2/3 Trellis
Legacy Turbo - 0.495, 0.793 Rate
Standard Turbo – 21/44 (BPSK Only), 1/2, 3/4, 7/8 Rate
Descrambler: Intelsat V.35, IBS(VSAT), Turbo(Optional)
Data Buffering: 8 bits to 262,144 bits, in 8-bit steps
Terrestrial Interfaces: RS-422 (RS-449 or RS-530 via cable adapters)
7.3 Options
Concatenated Codec:
A Reed-Solomon codec Intelsat.
Turbo Codec: Turbo Codec per IESS 315
7.4 Environmental
Prime Power:
+5VDC, +12VDC, -12VDC
Operating Temperature: 0 to 50° C, 95% Humidity, Noncondensing
Storage Temperature: -20 to 70° C, 99% Humidity, Noncondensing