Installation
IMPORTANT:
Electronic de-
vices are susceptible to lightning
and power station electrical
surges from both the AC outlet
and the telephone line. It is rec-
ommended that a surge protec-
tor be installed to protect against
such surges.
Programming
2
A. Mount Using Screws (not included)
B. Mount Using the Included Tape
C. Wiring the Power
VIKING
©
MODEL: LDB-3
Advanced Loop Detector
Viking Electronics, Inc.
Hudson, WI 54016
SWITCHED 12 VDC
OUTPUT
LINE INPUT
RELAY OUTPUT
(INFO SWITCH)
PHONE/TERMINAL DEVICE
DISABLE
INPUT
N.O.
N.C.
COM
(.3A MAX)
11
10
9
8
7
6
5
4
3
2
1
Mounting
Holes
1
2
3
4
5
6
7
8
9
10
11
Z3Z
3
Z2Z
2
R 5
R 2
R4R
4
R
7
R
7
R9R
9
R8R
8
C
R
C
R
2
(2) #6 Flathead
Screws or Sheetrock
Screws
Step 1.
Unsnap the plastic cover and remove the top
screw holding the circuit board.
Step 2.
Loosen the bottom screw and rotate the circuit
board to the left, exposing the two mounting
holes in the base.
Step 3.
Screw the base to the wall, etc. using (2) #6
flathead or sheetrock screws.
Note:
Make
sure the screw heads are fully driven into the
base to avoid shorting the circuit board leads.
Step 1.
Clean the back of the
LDB-3
and the surface
you are mounting to with rubbing alcohol be-
fore mounting.
Step 2.
Remove the backing on one side of the tape
and adhere to the
LDB-3
. Remove the rest of
the backing and press unit firmly to surface you
are mounting to.
1 2 3 4 5 6 7 8 9 10 11
Z
3
Z
3
Z
2
Z
2
R
5
R
2
R
4
R
4
R
7
R
7
R
9
R
9
R
8
R
8
C
R
C
R
2
120V AC
Negative
12V DC
Adapter
(included)
Positive
Internal View of the LDB-3
Switch 1
Switch 3 Description
ON
OFF
Ring Detection Only (see section
B
).
OFF
ON
Off-Hook/Loop Current Detection Only
(see section
C
).
ON
ON
Ring and Off-Hook/Loop Current Detection
(see section
D
).
Switch 2 Ring Cadence Mode (see section E)
ON
Ring Cadence Mode ON - relay remains activated in
between rings.
OFF
Ring Cadence Mode OFF - relay is activated only dur-
ing ringing.
A. DIP Switches
1 2 3 4 5 6 7 8 9 10 11
Z
3
Z
3
Z
2
Z
2
R
5
R
2
R
4
R
4
R
7
R
7
R
9
R
9
R
8
R
8
C
R
C
R
2
OFF ON
1
2
3
Internal View of the LDB-3
