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Both modems satisfy the requirements for government and military communications system
applications that require state-of-the-art modulation and coding techniques to optimize satellite
transponder bandwidth usage, while retaining backward compatibility.
The table below provide some of the key physical characteristic of both units.
Table 1-1. SLM-5650C / SLM-5650C-ODU Physical Characteristics
Description
Dimensions
Volume
Maximum Power Consumption
Prime Input Power
Cooling
Weight
The SLM-5650C:
•
Meets requirements for SWaP (Size, Weight, and Power) constrained applications in a
high performance but low acoustic signature package.
•
Supports Direct Sequence Spread Spectrum (DSSS) waveform and Comtech EF Data
(CEFD) proprietary Low Density Parity Check (LDPC) Forward Error Correction (FEC) in
three block sizes (Ultra Low Latency (ULL), Low Latency (LL), High Performance (HP))
and Turbo Product Code (TPC) FEC (3/4, 5/16, 21/44, 17/18, and 7/8 code rates).
•
Is compliant with the provisions of Department of Defense (DoD) Standard MIL-STD-188-
165A, Interoperability of SHF Satellite Communications PSK Modems (Frequency
Division Multiple Access [FDMA] Operation).
•
Can be controlled and monitored from a Personal Computer (PC) using serial remote,
Simple Network Management Protocol (SNMP), Hypertext Transfer Protocol (HTTP),
Hypertext Transfer Protocol Secured (HTTPS), and telnet.
The SLM-5650C-ODU has the same features listed above for the SLM-5650C, plus the following:
•
Is IP67 rated.
•
A selectable +13 or +18 VDC Low-noise Block Down Converter (LNB) voltage.
•
An external TX mute capability, using the DB9 remote control connector.
•
Normally Open (N/O) and Normally Closed (N/C) fault relay outputs, using the DB9
remote control connector.
•
A different gender and pinout layout of the DB9 connector.
•
A fault Light Emitting Diode (LED) that blinks continuously during the boot-up process.
Introduction
SLM-5650C / SLM-5650C-ODU Satellite Modem
SLM-5650C
5.7" x 5.2" x 1.5"
44.6 cubic inches
27W
5 VDC, 5.4 Amps
Conduction
2.7 lbs. (1.2 kg)
NOT YET CERTIFIED.
1–2
Revision 1
SLM-5650C-ODU
7.7" x 5.9" x 2.8"
127 cubic inches
30W
11 VDC to 33 VDC,
2.2 Amps to 0.9 Amps
Convection/Conduction
5.5 lbs. (2.5 kg)
MN-SLM-5650C
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