Comtech EF Data SLM-5650A - Manual (Page 41)

SLM-5650A Satellite Modem Revision 8
Introduction MN-SLM5650AMN-SLM5650A
1–13
Demodulator Specifications
Parameter
Specifications
Input
Power
Desired Carrier
For 70/140 MHz: +10 to -55 dBm
For L-Band:
+10 to -55 dBm (SR>3.2 MSPS)
+10 to 10·log
10
(SR/32000) -75 dBM
(SR≤3.2 MSPS) where SR is in symbols per second
Maximum Composite +20 dBm or +40 dBc
Input Impedance 50 Ω
Input Connectors • TNC for 52 to 88, 104 to 176
• Type N for 950 to 2000 MHz
Carrier Acquisition Range ± 30 kHz, selectable
Input Return Loss • -14 dB (70/140 MHz)
• -9 dB (L-Band)
Buffer Clock INT, Tx Terrestrial, Rx Satellite
Doppler Buffer 128 to 4,194,304 bits, or 2 to 60 mSec
Coding Options
Parameter
Specifications
Uncoded 1/1
Viterbi K=7, 1/2, 3/4, and 7/8 rates
Viterbi + Reed-Solomon Closed Network, per IESS-308, and IESS-309
Trellis IESS-310
Trellis + Reed-Solomon IESS-310
Turbo Turbo Product Coding (TPC), per IESS-315
LDPC: ULL, LL, and HP Closed Network
Open Network Options
Parameter
Specifications
IDR • INTELSAT IESS-308 (Framing only)
• INTELSAT IESS-310 (Framing only)
IBS • INTELSAT IESS-310 (Framing only)
• INTELSAT IESS-309 (Framing only)