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

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MDS 05-2415A01, Rev. A 3-1
CHAPTER 3
PROGRAMMING AND DIAGNOSTICS
INTRODUCTION
A significant feature of the 4310 Transceiver is the ability to accomplish many radio
programming and diagnostic tasks through software commands issued from a Hand-Held
Terminal (HHT).
Software control of the transceiver allows measurement and adjustment without removing the
top cover. In addition, when the Remote Maintenance feature is installed and enabled, many
of the same programming and diagnostic functions can be accessed over the RF channel,
thereby eliminating the need to travel to an installation site to perform minor checks and
adjustments.
This chapter explains how to connect the HHT to the transceiver, open the Diagnostics
Channel, and enter commands on the HHT keyboard. Step by step examples are used to
support the programming and diagnostic instructions.
Table 3-2 includes a complete list of HHT commands. Experienced users may wish to refer
directly to the table when programming or diagnosing the transceiver.
TERMINAL CONNECTION AND STARTUP
Connecting the HHT to the transceiver is simple, since the HHT interface cable includes a
DB-25 adapter plug that allows direct connection to the radio’s
INTERFACE
connector.
NOTE
Before connecting the HHT to the transceiver, verify the radio
is connected to a cont13.8 Vdc supply. (Most often the
transceiver is powered continuously, but some solar-powered
systems operate on an intermittent basis, making an alternate
power source mandatory for testing.) MDS also recommends
using a dummy load on the
A N T E N N A
connector of the
transceiver during all testing. This prevents accidental
interference to the rest of the radio system.
To connect and startup the HHT, follow these steps:
1. Remove the RTU interface cable from the
INTERFACE
connector on the transceiver
and set it aside. This step is not required for the MDS 4355 packaged system.
2. Plug the HHT into the
INTERFACE
connector as shown in Figure 3-1. If it is a MDS
4355 packaged system, plug the HHT into J3 of the Interface/Utility assembly as
shown in Figure 3-2.
3. Press and hold the
ENTER
key as the HHT runs through its self-check, a click will be
heard from the HHT, then release the
ENTER
key.