48
MDS 4790/9790 Series I/O Guide
MDS 05-3438A01, Rev. F
Operation Log
LOG [CLR]
This command displays or clears a list of the last 800 operating changes,
called “system events.” These events include alarm notifications,
as
well as normal operator actions such as turning the power on or off.
In
many cases, you can review the events leading up to a failure to help
determine the cause of a problem.
Entering the
LOG
command without any parameters displays the entire
event history. Entering
LOG CLR
or
LOG CLEAR
clears all current events
from the log history.
Multiple-Drop
Address
MADDR [NONE, 1–255]
The radio’s Multi-Drop Address uniquely identifies this radio on an
RS-232 COS (code-operated switch) bus connected to the rear panel’s
DIAGNOSTIC PORT
,
J1
. The unit’s address initially is set as
NONE
, for a
computer directly connected to the
DIAGNOSTIC PORT
of one radio.
MADDR
addresses can range from
1...255
. The master station will ignore
diagnostic messages sent to other Multi-Drop Addresses. With the
MADDR
address programmed, MDS’ InSite™ network management
system software can poll master stations through the COS bus to receive
the master unit’s diagnostic information. The
MADDR
command works
on MDS x790 master stations with software version 1.7 or later
installed. For more details,
see “Connecting Multiple Masters at One
Site” on Page 32
.
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 22
for
4-WIRE AUDIO INTERFACE
Event Log screen
,
Page 79
Clear Logs screen
,
Page 79
A
B
Multi-Drop Address (MADDR)
screen
,
Page 72
A
B
Modem screen
,
Page 69
A
B
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