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DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem
5.8.6 ALARM (J6)
The modem has two Form-C Dry Contact Alarm Relays onboard and an Alarm Connector located
on the rear panel, the 9-pin male "D" sub connector (J6).
The two relays are designated Modulator Alarm and Demodulator Alarm. Non-Alarm is defined as
the powered state of the relay. Thus, if there is a Modulator Alarm and/or Demodulator Alarm, the
pins will be connected as shown in Table 5-3:
The pin definitions for J6 are shown in Table 5-4. Note that the NC and NO (Normally Closed and
Normally Open nomenclature applies to non-energized relays.
5.8.7 REMOTE (J7)
The Remote Port (J7) is the RS-485 connection for remote monitor and control of the modem. It
is a 9-Pin Female "D" Connector. Refer to Table 5-5 for the connector pinouts.
5.8.8 SWITCH INTERFACE (J8)
The Switch Connector Port (J8) is the redundancy switch connector. It is a 68-Pin High-Density
Female Connector. Refer to Table 5-8 for connector pinouts.
This connector may be used for multiple interface types by installing either the SCSI to RS-422 or
SCSI to V.35 Cable Assembly (refer to Table 5-24).
Table 5-24.
Interface
Cable
Types
Assembly
Number
RS-422
CA/4826
V.35
CA/4841
TM065 - Rev. 3.3
Reference
Table for
Cable
Pinouts
Table 5-25
Table 5-26
Electrical Interfaces
5-27
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