MXD Users Manual
April 5, 2012
Page 5 of 26
Base Unit Help Button (Figure 1)
Normally, pushing the large blue Help Button on the front of your base unit causes the unit to send a
“Help needed” message to the response center. The Help Button also is used with the T/L button to
conduct range tests and to program the MXD unit to recognize PHBs or other accessories.
STATUS Light (Figure 1)
A small STATUS light is located on the lower left edge of the unit’s large “Help” button. The STATUS
light will display steady or flashing lights, in either red, green or orange color, depending on the status of
the unit. See Page 13 for a more detailed description of the STATUS light signals and their meaning.
T/L (Test/Learn) Button (Figure 2)
The white T/L (Test/Learn) Button is located on the rear of your MXD unit. It is used to place your MXD
unit into special operating modes to conduct PHB range tests, to program PHBs and other accessories,
and to allow technical personnel to diagnose problems and adjust the unit.
T/L Operating Modes Chart
If the T/L
button is
pushed:
The base unit will be
placed in the
following mode:
Voice Announcement (if
enabled)
The purpose of this mode
is:
Tone Signal (if voice not
enabled)
Once
RANGE TEST
“
Range Test Mode
”
Test the range of the PHB
and search for areas where
the PHB signal might not be
detected by the base unit
One brief tone
Twice
MONITOR
“
Monitor Mode
”
Allow a technician to listen
while the unit is dialing and
transferring data. This helps
the technician troubleshoot
problems.
Two brief tones
Three
times
POWER
“
Press HELP to turn off
”
Place unit in an inactive state
until unit is unplugged from
AC Power, at which time
unit will automatically turn
off completely
Three brief tones
Four times
SERVICE
“
Service Mode
”
Allows a response center
attendant to communicate
with the unit during
troubleshooting or re-
programming
Four Brief Tones
Five times
Returned to normal
mode
“
System Ready
”
The unit is returned to its
normal mode, ready to
process alarm signals
Two quick tones in rapid
succession
RESET Button (Figure 2)
The black RESET button is located on the rear of your MXD unit. Whenever the RESET Button is
pressed, your MXD unit will return to its standard operating mode, ready to transmit alarms from the
