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Power Input
Data Communications Input -
12W, TMS-12A, LM-24M, or MLC-24. Connect using a six
wire RJ25 (3 line) modular cord.
40 Pin Display Chip -
Factory installed in the Z2A socket to
drive lines 1 - 12. Install in socket Z2B to drive lines 13 - 24.
Common Audible Relay Enable -
left two pins to enable the common audible relay.
Common Audible Relay Output -
which activates in cadence with 600 OHM common audible.
N/O or N/C Common Audible Relay -
the left two pins for N/C relay output or place on the right two
pins for N/O relay output.
Power and Data Output -
connect to a second LM-12W to display line status on up to 24 stations. Connect using a six
wire RJ25 (3 line) modular cord.
600 Ohm Common Audible Output -
models M2W, PA-2A, or CPA-7A).
VR-1A Communications Output -
12A only. Connect using a four wire RJ14 (2 line) modular cord.
A. Connecting to a TMS-12A
Connect the V/BN wire pair from the TMS-12A's (Fax Back Document 070) 25 pair cable to the red and green
(center) pair of the LM-12W's data communications input jack J1 (see diagram above).
B. Connecting to a LM-24M
Connect the red and green wire pair from the LM-24M (Fax Back Document 670) "COM" connector to the red and
green (center) pair of the LM-12W's data communications input jack J1. An additional LM-12W will be required to
display lines 13-24 (see section F).
C. Connecting to a MLC-24
Connect the red and green wire pair from the MLC-24 (Fax Back Document 675) "COM" connector to the red and
green (center) pair of the LM-12W's data communications input jack J1. An additional LM-12W will be required to
display lines 13-24 (see section F). Note: This modular cord must be a two wire (single line) cord only. Do not use
a four or six wire.
D. Connecting an Optional VR-1A
A VR-1A Visual Status Indicator (Fax Back Document 695) can be connected to J2 on the LM-12W. The VR-1A
will light to indicate one or more lines have exceeded the "On Hold" alarm timer on the TMS-12A.
E. Connecting a Second LM-12W to Display up to 24 Stations
1. Power down the unit and disconnect all cables.
2. Remove the four button head screws using the hex key provided, making sure to hold the PCB in place.
3. Remove the PCB, foam, and the 1- 12 numbered lens.
4. Install the lens numbered 13-24 and reassemble.
5. Remove the 40 pin driver chip from socket Z2A and insert it in socket Z2B paying close attention not to bend
legs or to insert the chip in the wrong direction. The chip should face in the same direction as Z2A (see diagram
above).
6. Connect the output (J5) of the primary LM-12W (lines 1 - 12) to the input (J1) of the secondary LM-12W (lines 13
- 24) with a 3 line modular cord (RJ25) if the distance is less than 6 feet between the displays. If the distance is
more than 6 feet, use a 2 line modular cord (RJ14) and plug a separate power supply into J3.
Product Support Line...(715) 386-8666
Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking
Electronics, its affiliates and/or subsidiaries assume no responsibility for errors and/or omissions contained in this information. Revisions
of this document or new editions of it may be issued to incorporate such changes.
Fax Back Doc # 665
Installation
Input from primary LM-
Place the shunt on the
N/O or N/C contact
Place the shunt on
Daisy chain additional LM-12W's for multi zone viewing or
Connect to an optional paging amplifier (Viking
Connect to an optional VR-1A. For use with a TMS-
Printed in the U.S.A.
J1
Z2A
J8
J7
J6
J5
(Requires LM-12W lens kit)
Fax Back Line...(715) 386-4345
Rear View of the
LM-12W
J3
Z2B
J4
J2
ZF300430 Rev B
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