Specifications

ManualsBrandsMDS ManualsConsumer electronicsMDS 4710 Series

MDS 05-3438A01, Rev. E MDS 4790/9790 Series I/O Guide 45

Display Unit Model

Number Code

MODEL

This command displays the radio’s model number. The characters and

numbers, and their position in the code sequence, identifies the product

options and configuration of the radio at the time of manufacture. It is

helpful to have this code and the unit serial number available when com-

municating with the factory for technical assistance.

Payload Data

Modem

Configuration

MODEM [NONE/4800/9600/19200/DEFAULT]

This command sets the radio’s signal type and modulation mode.

NONE—No modem is installed, or it is desired to use the unit as

an analog transceiver using Transmit Audio Input (Pin 9) and

Receive Audio Output (Pin 11). See “4-Wire Audio

Connector—J2” on Page 21 for

4-WIRE AUDIO INTERFACE

connector pinouts when the unit is uses the digital modem mode.

Review the RXLEVEL command on Page 49 and TXLEVEL on

Page 55 for guidance on setting appropriate levels.

9600—9600 bps modem speed (used for MDS 4790A/E and

MDS 9790A)

4800—4800 bps modem speed (used for MDS 4790E)

19200—19200 bps modem speed (used for MDS 4790C)

DEFAULT—Default modem speed for radio (model dependent)

Minor Alarm Event

Assignments

NMASK [0000 0000–FFFF FFFF]

Table 9 and Table 10 listed the major and minor alarm classifications. It

is possible to reassign alarm outputs (illustrated in Figure 19 on

Page 21) to a different category, and change which alarm events trigger

an automatic switchover in redundant master stations. However, this

should be done rarely, if ever.

The

AMASK command (Page 37) and NMASK command reclassify major

and minor alarm events, respectively, changing the alarm output relay

status and switchover conditions. These commands can be used to tailor

a radio’s alarm response. For example, a major alarm at a redundant

master station causes switch-over to the other transceiver board. By

reconfiguring a minor alarm as a major alarm, switch-over can be forced

at the occurrence of a (formerly) minor alarm condition.

Reclassifying alarms does not disable alarm notification. The front

panel

ALARM LED illuminate, the alarm event is logged, and the ALARM

and

STAT commands show the alarm status.

Modem screen, Page 65

Alarm Masks screen, Page 71