Table of Contents
Advertisement
DMD2401 LB/ST L-Band Satellite Modem and ODU Driver
Carrier:
TxForce Alrm:
RxForce Alrm:
Remote Port:
LED Test:
4.3 Terminal Mode Control
The DMD2401 LB/ST 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 VT100 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 EEPROM for future use.
4.3.1 Modem Terminal Mode Control
The modem can be interactively monitored and controlled in the Terminal mode, with a full
screen presentation of current settings and status. Programming is accomplished by selecting
the item to be modified and pressing the terminal key of the option number. For example, to
change the transmit data rate, enter '33' at the terminal. The modem will respond by presenting
the options available and requesting input. Two types of input may be requested. If the input is
multiple choice, the desired choice is selected by pressing the 'Space' key. When the desired
option is displayed, press the 'Enter' key to select that option. The other possible input type
requires a numerical input (such as entering a frequency or data rate. This type of input is
followed by pressing the 'Enter' or carriage return key. An input can be aborted at any time by
pressing the 'ESC' key. Invalid input keys cause an error message to be displayed on the
terminal.
The Terminal Control Mode supports serial baud rates of 300, 1200, 2400, 4800, 9600, 19200,
38400, 57600, and 115200. The connection must be set for 8 data bits, 1 stop bit and no parity
(8,N,1. Three terminal emulations are supported: VT100, WYSE 50, and ADDS-VP.
$ is used for setting the screen when the terminal is used is used for the first time or the non-
volatile memory gets reset.
4.3.2 Modem Setup for Terminal Mode
Terminal mode communications and protocol is set from the Front Panel control by setting the
"Control Mode" parameter to "Terminal", and then setting the "Modem Port," "Term Baud" and
"Emulation" parameters as desired. Then a terminal is connected to Connector J5 on the Back
TM075 - Rev. 1.3
{CW, Dual, Offset, Normal}
CW - Causes the Modulator to output pure carrier.
Dual – Causes a double sideband output.
Offset – Causes a single sideband output.
Normal – Causes the Modulator to output normal
modulation.
{No, Yes}
Allows a Major Tx Alarm to be forced (for testing
purposes, etc.).
{No, Yes}
Allows a Major Rx Alarm to be forced (for testing
purposes, etc.).
{Normal, Test}
Test sends a constantly looping data packet through the
Remote Port that displays "Testing...".
{Normal, Test}
Allows the user to test Front Panel LED function.
User Interfaces
4-21
Advertisement
Table of Contents
