Maintenance
M7/M7L/M7LT Modular Satellite Modem
2-2
M7/M7L/M7LT - Rev. 0.05
Do not mount the modem in an unprotected outdoor location where there is direct contact with rain,
snow, wind or sun. The modem is designed for indoor applications only.
The only tools and accessories required for rack mounting the modem is a set of four rack mounting
screws and an appropriate screwdriver. Rack mount brackets are an integral part of the front panel
plate of the unit and are not removable.
The following interface connections should be available at the mounting location as a minimum:
Prime AC power.
A 75
Transmit IF cable with BNC male connector. (50
optional) or a 50
Transmit IF cable
with SMA male connector for the L-Band version.
A 75
Receive IF cable with BNC male connector. (50
optional) or a 75
Receive IF cable with
SMA connector for the L-Band versions.
A Terrestrial data interface cable to mate with the modem or installed interface option; either a
25-
pin male “D” sub connector for all standard or appropriate connector for an optional interface
(such as G.703 or Ethernet).
2.3.
Modem Connections
All connections to the modem are located on the rear of the unit: The connector definitions in the
following sections describe the connectors on the modem. Any connection interfacing to the modem
must be with an appropriate mating connector. Refer to Figure 2-1 for the location of the rear panel
connections on the M7 and Figure 2-2 and Figure 2-3 for the prime power input location on the M7LT
Figure 2-1
– M7 Rear Panel with Synchronous Serial Interface Option
2.3.1.
Prime DC power (J2)
For the standard M7 primary power is applied via an 8 to 36VDC input connector - J2. An external
power convert is used to convert from 100-240 VAC or -48 VDC power sources.
There are two (2) prime power options for the M7LT that are applied directly to the rear panel of the
chassis. These options are 100-240 VAC (Figure 2-2) and -48 VDC (Figure 2-3).
Figure 2-2
– M7LT Rear Panel with AC Prime Power Input
