19
Input Power Fuse
The 2 ampere time delay power fuse is accessible from the rear panel (see
Figure 13). Be sure to use the same fuse type if replacement is required.
Operating Details
Battery Charging
Charge the internal UPS batteries at a minimum 13.8 VDC for 16 hours (40 mA
trickle charge) by attaching each unit to its external power supply. This will permit
battery operation for up to 20 minutes during line power losses.
Indicators
The three LEDs on the front panel are shown in Figure 13.
ADDER 882i
™
INTERCOM/DATA SYSTEM
Telecast
MADE IN USA
Fiber Systems, Inc.
1 2 3 4
EXTERNAL
POWER
INTERNAL
RESERVE
RECEIVE
STATUS
AUXILIARY
4-WIRE
AUDIO I/O
+8 dBm MAX
DATA/TALLY
DATA/CCU
POWER
1 2 3 4 5 6 7 8
A B
A B
+8dBm MAX LEVEL
600 Ohm
AUXILIARY
4-WIRE
AUDIO I/O
RTS
2-Wire
GAIN IN
GAIN OUT
NULL
B A
POWER
PORTS
TERM
ON
OFF
d
w
Clear-Com
2-Wire
POWER
PORTS
TERM
ON
OFF
d
w
GAIN
IN
OUT
NULL
A B
+8dBm MAX LEVEL
600 Ohm
AUXILIARY
4-WIRE
AUDIO I/O
Figure 13: Front Panel LED Indications
• External Power
When this green LED is illuminated, an external supply of
between 12 and 24 VDC is connected.
•
Internal Reserve
This LED is illuminated green when the power is on and the
internal battery is adequately charged. This LED lights after
one half hour of charge. There may be a few minutes of
reserve after the indicators extinguish. This LED is
illuminated red when the internal battery is discharging.
•
Link Status
This red LED is on when the fiber optic link is not properly
attached, or the system units are not communicating
properly. This indicator is meaningful only if one of the other
two LEDs is on.
An audible alarm has been incorporated into the Adder 882 in addition to the
LED indicators on the front panel. This alarm alerts the user that the internal
batteries are discharging. A defeat switch for the audible alarm is located inside
the unit on the main circuit board.