Comtech EF Data SDM-300L - Manual (Page 29)

Installation SDM-300L Satellite Modem
2–8 Rev. 2
Data I/O Interface Connector (J8)
The Data I/O interface connector conducts data input and output signals to and from the
modem, and connects to the customer’s terrestrial equipment, breakout panel, or protection
switch. The modem is currently available with a choice of four Data I/O connectors, as
follows:
•
25-pin D connector is the standard connector shipped with a base
platform modem.
•
50-pin D connector is the standard connector when the modem is
ordered with the optional overhead PCB or if the overhead PCB has
been installed in the field.
•
50-pin D that can be ordered with the basic modem, but it does not
include the Overhead Card. This is used with breakout panels and
switches.
•
37-pin D is an alternate connector available upon special request for the
base platform modem.
•
34-pin Winchester is an alternate connector available upon special
request for the base platform modem.
The Data I/O pinout is different for each of the interface configurations. For pinout
information, refer to the appropriate table as follows:
Standard: 25-pin D connector Table 2-4
Optional: 34-pin Winchester connector Table 2-5
Optional: 37-pin D connector Table 2-6
Optional: 50-pin D connector Table 2-7