Modem Specifications; Table 1-1. Sdm-9000 Specifications - Comtech EF Data SDM-9000 Installation And Operation Manual

Introduction

1.3 Modem Specifications

Table 1-1 lists the operating specifications of the modem.
Operating Frequency Range
Modulation Types
Operating Channel Spacing
BER
Baseband Interface:
Elastic Buffer
Digital Data Rate
Scrambling/Descrambling Types
Forward Error Correction:
M&C
Filter Mask Types
ESC
Loopback Modes
Diagnostic Features
Prime Power
Size
Weight
1–10

Table 1-1. SDM-9000 Specifications

MIL-STD-188
ECL
G.703
Viterbi K=7
Reed-Solomon
Pragmatic Trellis
General Specifications
50 to 180 MHz, synthesized in 2.5 kHz steps
•
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)
Less than 0.5 dB degradation operating with 2 adjacent like
channels, each 10 dB higher at 1.3 times the symbol rate
See Tables 1-2 through 1-4
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
2 to 32 ms, selectable from front panel
6.0 to 51.84 Mbit/s, in 1 bit steps
•
V.35 (per CCITT V.35)
•
IDR (per IESS-308)
•
EFD (SDM-450 compatible)
Rates:
1/2, 3/4, 7/8
Optional
2/3 and 5/6
Front panel display (16 character by 2 rows)
INTELSAT
IDR or None, field selectable
•
Baseband (near end)
•
Interface (near end and far end)
•
IF/RF
•
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
90 to 264 VAC, 47 to 63 Hz,
200W maximum, fused at 2A
38 to 64 VDC
Physical
3.5" H x 19.0" W x 20.0" D (2 RU) (see Figure 2-1)
19 lbs. (approximate)
SDM-9000 Satellite Modem
Rev. 4