System Bench Testing Set-Up; Performing Network-Wide Radio Diagnostics - GE MDS 4790M Installation And Operation Manual

CAUTION
POSSIBLE
EQUIPMENT
DAMAGE
MDS 05-3628A01, Rev. B

System Bench Testing Set-up

Figure 27 shows a sample test setup that can be used to verify the basic
operation of MDS x710 and x790 radios. This test can be performed with any
number of remote radios by using a power divider with the appropriate number
of output connections.
The MDS x710 and x790 radios include an internal RTU simulator. Use the
RTU command (see "RTU [ON/OFF/0-80]" on page 39) to poll remote radios.
The command reports the number of polls sent, polls received, and the number
of errors detected.
It is very important to use attenuation between all units in the test setup. The
amount of attenuation required depends on the number of units being tested and
the desired signal strength (RSSI) at each transceiver during the test. In no case
should a signal greater than –50 dBm be applied to any radio in the test setup.
COMPUTER RUNNING
MDS "POLL.EXE" PROGRAM
MASTER STATION
POWER ATTENUATORS
• Fixed or adjustable
• 5w minimum rating
Figure 27. System Bench Test Set-up

7.2 Performing Network-Wide Radio Diagnostics

Radios in a network can be remotely polled by connecting a laptop or PC running
InSite diagnostics software to any radio in the network. Figure 27 shows an
example of a setup for performing network-wide remote diagnostics.
If a PC is connected to any radio in the network, active messaging (polling
which briefly interrupts payload data transmission) can be performed. To
perform diagnostics without interrupting payload data transmission, connect
the PC to a radio defined as the "root" radio. A radio is defined as a root radio
using the command (page 34) locally, at the radio.
DTYPE ROOT
For more information, see the InSite radio System Management Software
Installation and Operation Guide and online help. A complete explanation of
remote diagnostics can be found in GE MDS' Network-Wide Diagnostics
System Handbook. See the Handbook for more information about the basic
diagnostic procedures outlined below.
1. Program one radio in the network as the root radio by entering the
command at the radio.
ROOT
2. At the root radio, use the
enable network-wide diagnostics and set the baud rate at the diagnostics port.
3. Program all other radios in the network as nodes by entering the
command at each radio.
NODE
MDS 4790M (MPT 1411) I/O Guide
REMOTE
REMOTE
POWER DIVIDER
NON-RADIATING ATTENUATOR
• Install on any unused divider ports
• 5w minimum rating
and
DLINK ON DLINK [baud rate]
REMOTE
REMOTE
DTYPE
commands to
DTYPE
65