Comtech EF Data SDM-9000, Installation And Operation Manual

Page: 32 / 256

Introduction SDM-9000 Satellite Modem
1–10 Rev. 4
1.3 Modem Specifications
Table 1-1 lists the operating specifications of the modem.
Table 1 - 1. SDM - 9000 Specifications
General Specifications
Operating Frequency Range 50 to 180 MHz, synthesized in 2.5 kHz steps
Modulation Types
•
QPSK at 1/2, 3/4, and 7/8 rates
•
8PSK trellis at 2/3 and 5/6 rates (optional)
•
16QAM at 3/4 and 7/8 rates (optional)
Operating Channel Spacing Less than 0.5 dB degradation operating with 2 adjacent like
channels, each 10 dB higher at 1.3 times the symbol rate
BER See Tables 1-2 through 1-4
Baseband Interface:
MIL-STD-188
ECL
G.703 6 to 13 Mbit/s
6 to 51.84 Mbit/s
8.448 Mbit/s
32.064 Mbit/s
34.368 Mbit/s
44.736 Mbit/s
51.840 Mbit/s
Elastic Buffer 2 to 32 ms, selectable from front panel
Digital Data Rate 6.0 to 51.84 Mbit/s, in 1 bit steps
Scrambling/Descrambling Types
•
V.35 (per CCITT V.35)
•
IDR (per IESS-308)
•
EFD (SDM-450 compatible)
Forward Error Correction:
Viterbi K=7
Reed-Solomon
Pragmatic Trellis
Rates:
1/2, 3/4, 7/8
Optional
2/3 and 5/6
M&C Front panel display (16 character by 2 rows)
Filter Mask Types INTELSAT
ESC IDR or None, field selectable
Loopback Modes
•
Baseband (near end)
•
Interface (near end and far end)
•
IF/RF
Diagnostic Features
•
IF/RF loopbacks
•
Baseband/Interface loopbacks
•
Fault monitoring (includes current/stored faults)
•
BER monitoring
•
Input IF power monitoring
•
Buffer fill status monitoring
•
Remote control via serial port
Prime Power 90 to 264 VAC, 47 to 63 Hz,
200W maximum, fused at 2A
38 to 64 VDC
Physical
Size
Weight 3.5” H x 19.0” W x 20.0” D (2 RU) (see Figure 2-1)
19 lbs. (approximate)