6
AC IN
16V
AC
power input
AC OUT
16V
AC
filtered power output
BATT
12V battery
B.LGT
Backlight Power Terminal: connect as
secondary 12V power supply to illuminate
the LCD screens
GND
Ground
BUZZ
Buzzer Output: this 12V output follows the
internal buzzer
TAMP
UPS Low Battery Supervisory
R SIM
UPS AC Failure Supervisory
HNDSET B
Not used
HNDSET A
Not used
AUX
Fused 12V output
RCA
Not Used
RCB
Not Used
ACK
Acknowledge Output: this 12V output
follows the “Acknowledge” light
TRBL
Not used
OPT
Option Output: this 12V output follows the
“Option” light
PGM1
Output 1 (used for RED1 installation)
PGM2
Output 2 (not used)
Section 3
DLM2A Backplane Connections to RS-232
14V
AC
May be used as an external AC output.
BATT
May be used as an external 12V power source. Do not connect a battery to these terminals.
B. LIGHT
Backlight power input terminal. Connect a secondary 12V power source to illuminate the LCD screens.
A secondary power supply is not required if a 12V supply has already been connected to the DML4
B LGT terminal.
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