3
A. Low Loop Current
B. Low Idle Voltage
Alarm Panel Applications
Low loop current from a VoIP ATA, cable company, or telco provided phone lines can cause some
alarm panels to go into an alarm state due to very low levels at the phone when in-use. Solve this
problem by wiring a
TBB-1B
as shown below. The
TBB-1B
increases the in-use voltage.
Low idle voltage from a VoIP ATA, cable company or telco provided phone lines can cause some
alarm panels to go into an alarm state. Solve this problem by wiring a
TBB-1B
as shown below. A
TBB-1B
increases the idle voltage, converting 24 volt lines to 48 volt lines.
Alarm
Panel
Low Loop
Current
Phone Line
Phones
VIKIN
G
M
o
d
e
l:
x
xxxxxxx
x
V
iking Electronics, Inc.
(715
) 386-8861
1531 Industrial
S
t., Hudson, WI 54016
w
ww
.vikin
g
electronics.com DOD#
S/
N:
X
XXXXXX
X
P
/N:
D
EV
:
x
xxxxxx
x
RoH
S
4: Line Out to Phone
3: Line Out to Phone
2: Line In
1: Line In
Internal View of the TBB-1B
Low Voltage
Phone Line
Phones
VIKING
M
o
d
e
l:
x
xxxxxxx
x
V
iking Electronics, Inc.
(715
) 386-8861
1531 Industrial
S
t., Hudson, WI 5401
6
w
ww
.vikin
g
electronics.com DOD#
S/
N:
X
XXXXXXX
P
/N:
D
EV
:
x
xxxxxxx
RoH
S
4: Line Out to Phone
3: Line Out to Phone
2: Line In
1: Line In
Internal View of the TBB-1B
Alarm
Panel
