Microwave Data Systems MDS 4310, Установка, эксплуатация и техническое обслуживание на месте

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MDS 05-2415A01, Rev. A D-1
APPENDIX D
REMOTE MAINTENANCE MODULE
Optional System Equipment
Assembly P/N: 03-1958A01
INTRODUCTION
The Remote Maintenance feature allows fine-adjustment of several important operating
parameters of an MDS 4310 Transceiver either locally with an HHT (or PC terminal), or
from a distant location over-the-air using MDS 2000 Diagnostics and Control System
Software. This software resides on a personal computer at the system control site.
The master station in the radio system also must be equipped with Remote Maintenance
compatible firmware for over-the-air diagnostics to be possible. Diagnostics over the RF
channel is accomplished using DTMF tones executed by an MDS 4100 Series “SMART”
Master Station. Any MDS 4310 Transceiver on which Remote Maintenance commands are to
be executed must be equipped with a Remote Maintenance Module (P/N 03-1958A01).
The user should be aware that Remote Maintenance commands cannot be implemented
during normal data traffic. That is, normal operation of the entire radio system must stop
before Remote Maintenance commands can be executed. All of the MDS 4310 Transceivers
served by a particular Master Station become unavailable for data exchange when Remote
Maintenance commands are invoked on any transceiver in the radio system. Use of Remote
Maintenance commands, then, should occur at times that are as non-disruptive as possible,
and any affected users should be notified in advance.
The Remote Maintenance Module mounts within the housing of the MDS 4310 Transceiver.
Specifically, the board mates with connectors J5 and J7 on the main transceiver board. See
Figure D-1.
A number of general operating settings are available by connecting an MDS HHT or PC
terminal to the DB-25
INTERFACE
connector on the transceiver’s case. Details on the
diagnostic and programming functions of the MDS 4310 are found in Chapter 3—
Programming and Diagnostics.
OPERATION
The Remote Maintenance Module mediates the Remote Maintenance commands between the
HHT or PC terminal and the transceiver. It interprets the control commands and sends the
appropriate instructions to the transceiver. With Remote Maintenance, three important
operating parameters can be adjusted locally, or remotely, within specified bounds. These
parameters are: (1) transmit power level, (2) modulation deviation, and, (3) frequency offset.
The following parameters can be read, but not adjusted using Remote Maintenance: Remote
Unit Temperature, Reflected RF Power, Supply Voltage, and Received Signal Strength.