Specifications

Table Of Contents
INSTALLATION
Page 35 MRC-565 Packet Data Radio Operations and Maintenance
4.3.3 Radio ID Number
Every unit in a Meteor Burst Communications System has a 16-bit ID. This allows up to 65,536
unique ID numbers. The MRC-565 ID number will already be programmed into the unit by
MRC prior to shipment. Enter the command ID [ENTER] and the unit ID number will be
displayed on the operator terminal. Contact your System Administrator to register this ID in the
network configuration database. In some cases this number will be “locked” and cannot be
changed in the field, you can type LOCK to determine if the ID is locked or not.
Under some circumstances, the ID may have to be changed on-site. It can only be done if the ID
is not locked. In that event, this action must be coordinated with both MRC and your System
Administrator. Failure to do so may result in data or messages being misrouted or lost.
To change the ID use the following command:
ID,nnnnn,mmmmm{,aaaaaa},INIT [ENTER]
where nnnnnn is the unit ID, mmmmm is the master station assignment and aaaaaa is the
master select mode (FIXED, AUTO, PREF, MULTI). Obtain the proper master station
assignment and select mode from your System Administrator. The MRC-565 will save this ID
and will use it whenever the unit is powered up or reset.
MODE
DESCRIPTION
PREF
Unit connects to the mmmm Master for the NDOWN period (set with SNP
command). After NDOWN period unit will connect to the Master that it has
received the most syncs from. In this mode the unit can communicate with only
one Master at a time.
AUTO
Unit connects to the mmmm Master, if it’s not successful it switches to another
Master. It will stay with that Master as long as it can communicate with it. In this
mode the unit can communicate with only one Master at a time. This is the
preferred mode for LOS networks
FIXED
Connectivity will be fixed to the mmmm Master. In this mode the unit can
communicate with only one Master at a time. This is the preferred mode for
networks with a single master.
4.3.4 Frequency and Modulation Parameters
The MRC-565 will already be programmed with the authorized frequencies to be used in your
network. These frequencies are stored in parameter memory and cannot be changed. Verify that
the correct frequency is configured by entering the command: