Comtech EF Data DMD-2050E User manual

MN-DMD2050E Revision 2
Comtech EF Data is an
AS9100 Rev B / ISO9001:2000 Registered Company
DMD-2050E
Universal Satellite Modem
Installation and Operation Manual
IMPORTANT NOTE: The information contained in this document supersedes all previously published information
regarding this product. Product specifications are subject to change without prior notice.

ER-DMD2050E-EA2 Rev - PLM C-0028800
Errata A for MN-DMD2050E Rev 2
Comtech EF Data Documentation Update
Subject: Chapter 3, Theory of Operation
Errata Part Number: ER-DMD2050E-EA2 (Errata documents are not subject to revision.)
PLM CO Number: C-0028800
Comments: The new information will be included in the next released revision of the manual.
IMPORTANT
Set the modem to Loop Timing mode for these Loopback operations:
Tx/Rx Terrestrial Loopback
Tx/Rx Baseband Loopback
Rx Baseband Loopback

ER-DMD2050E-EA2 Rev - PLM C-0028800
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ER-DMD2050E-EB2 Rev - PLM C-0028804
Errata B for MN-DMD2050E Rev 2
Comtech EF Data Documentation Update
Subject: Chapter 3 and Chapter 4 references to MN-DMDREMOTEOP manual
Errata Part Number: ER-DMD2050E-EB2 (Errata documents are not subject to revision.)
PLM CO Number: C-0028804
Comments: The new information will be included in the next released revision of the manual. See
the following pages.

DMD2050E Universal Satellite Modem User Interfaces
MN-DMD2050E Revision 2 4–31
4.4.6.6 SNMP (menu)
A description of OID organization is provided in the MN-DMDREMOTEOP manual.
SNMP MENU
SNMP VERSION {V1 & V2, V3} This selection controls the SNMP Version that will be used in
messaging between the equipment and it’s host.
When V1 & V2 is used, RD COMMUNITY and RDWR
COMMUNITY are used to determine the authorization of an
incoming message.
When V3 is used, three contexts are supported:
public , mib2 , and
dev . Context, Authentication and Privacy are a portion of each
SNMPV3 message.
The
public context will only allow the user to see the sysoid of the
unit. This is the most restricted access possible and only allows
the unit to be identified by a host SNMP Station.
The
mib2 context allows a user with appropriate authentication to
access the mib2 OIDs and the SNMP OIDs. These are of interest
primarily to network operators not controlling the satellite link.
The
dev context allows a user with appropriate authentication to
access the device control portion of the MIB. These OIDs are
used to control the devices satellite link and operation.
TRAP VERSION {V1, V2} This controls the type of message format used when a message
trap is generated by the equipment and bound for a SNMP Host.
Messages will only be sent if the unit has been authorized to do
so.
AUTHORIZATION {TRAPS OFF, TRAPS
ON}
This controls the type of message format used when a message
trap is generated by the equipment and bound for a SNMP host.
Messages will only be sent if the unit has been authorized to do
so.
RD COMMUNITY {16 characters of
name}
This menu is only displayed when SNMP VERSION is set to V1 &
V2. This is the community that a host must be acting within when
an OID variable is requested by a V1/V2 SNMP message.
RDWR COMMUNITY {16 characters of
name}
This menu is only displayed when SNMP VERSION is set to V1 &
V2. This is the community that a host must be acting within when
an OID variable is being changed by a V1/V2 SNMP message.
TRAP AGENT {XXX.XXX.XXX.XXX}
Hexadecimal Mask
{ddd.ddd.ddd.ddd}
Decimal Mask
IP address of the device receiving SNMP Traps

DMD2050E Universal Satellite Modem Theory of Operation
MN-DMD2050E Revision 2 3–8
Modem Status, Alarms & Contact Closures (Section 3.2.9)
3.2.6 Terminal Port
This port supports an asynchronous control protocol as described in Chapter 4. It is configured to
support RS-232 signal levels. This port is intended for use in computer-based remote M&C. All
functions of the modem may be monitored and controlled from this port via a common terminal
connected to the Terminal Port. This function is front panel selectable.
The Terminal Mode Control allows the use of an external terminal or computer to monitor and
control the modem from a full screen interactive presentation operated by the modem itself. No
external software is required other than VT-100 Terminal Emulation Software (e.g. “Procomm”
for a computer when used as a terminal. The Control Port is normally used as an RS–232
Connection to the terminal device. The RS-232 operating parameters can be set using the
modem Front Panel and stored in Non-volatile memory for future use.
IMPORTANT
Refer to the Remote Protocol Manual (MN-DMDREMOTEOP) for the Terminal, Remote
and SNMP screens and protocols.
3.2.7 Modem Remote Communications (RLLP)
The Remote Port located on J20 allows for control and monitoring of parameters and functions
via an RS-232 Serial Interface, or RS-485 for RLLP Protocol. ‘Equipment Remote Mode’ setup
can be entered from the front panel or the Web Browser interface under the “System” menu. This
requires the user to first set the Remote Port Control to “Remote” then set the Multidrop Address
as needed followed by setting the Remote Interface to RS232 or RS485.
Control and status messages are conveyed between the modem and all subsidiary modems and
the host computer using packetized message blocks in accordance with a proprietary
communications specification. This communication is handled by the Radyne Link Level Protocol
(RLLP), which serves as a protocol ‘wrapper’ for the remote M&C data. See the MN-
DMDREMOTEOP manual for more information.

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Copyright © Comtech EF Data, 2013. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone]
Comtech EF Data is an
AS9100 Rev B / ISO9001:2000 Registered Company
DMD2050E
Universal Satellite Modem
Installation and Operation Manual
Part Number MN-DMD2050E
Revision 2

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