Linear D-8C Switch User Manual


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RECEIVER INSTALLATION
The D-8C receiver should be mounted on the wall above or
next to the control panel. Use the mounting bracket supplied
and stretch the white wire antenna out straight. Generally, the
higher the receiver is mounted above ground level the better
the radio range will be. Follow these steps to install the receiver:
CAUTION: DO NOT MOUNT THE D-8C RECEIVER ON
OR IN A METAL CONTROL PANEL! SHORT RANGE
AND/OR ERRATIC OPERATION WILL OCCUR!
STEP 1 Connect GROUND (WHITE) to the negative
terminal on the 12-volt 24-hour output from the
control panel.
STEP 2 Connect +12-VOLT (BLACK) to the positive
terminal on the 12-volt 24-hour output from the
control panel.
STEP 3 Connect the CHANNEL outputs 1-8 (See Figure 2 for
colors) to the zone input terminals on the control panel.
NOTE: To operate correctly with this receiver, the
control panel must be able to trigger from a
short-to-common input. Program the panel for normally
open loop trigger. Check that the loop returns are the
same as the control panel common ground.
STEP 4 If the control panel uses end-of-line resistors,
connect each resistor across the zone input
terminals and the loop return of the control panel.
CHECKOUT AND TEST
After coding the D-8C receiver, the system should be tested.
To test the receiver, perform the following steps:
STEP 1 Apply power to the control panel. Be sure the
control panel is disarmed or in a “test” mode.
STEP 2 Trigger each of the system’s transmitters, one at a
time. Receiver activation indicates that the
transmitters are operating properly and that the
digital codes are correctly matched. Verify that the
correct control panel loop is violated for each
transmitter triggered.
STEP 3 With portable transmitters, operate them from
various locations. This will help to locate possible
null areas where structural steel, and/or certain
obstacles may interfere with transmission.
If the transmitter fails to activate the receiver, first check the
coding switches to see that the switch keys in the transmitter
and receiver are properly matched. Next, check the battery
and replace it if it is weak. Although transmitter batteries
should last for a year with normal use, it is good practice to
install new transmitter batteries every six months.
LINEAR LIMITED WARRANTY
This Linear product is warranted against defects in material and workmanship for twelve
(12) months. The Warranty Expiration Date is labeled on the product. This warranty
extends only to wholesale customers
who buy direct from Linear or through Linear’s
normal distribution channels. Linear does not warrant this product to consumers.
Consumers should inquire from their selling dealer as to the nature of the dealer’s warranty,
if any. There are no obligations or liabilities on the part of Linear corporation
for consequential damages arising out of or in connection with use or
performance of this product or other indirect damages with respect to loss of
property, revenue, or profit, or cost of removal, installation, or reinstallation.
All implied warranties, including implied warranties for merchantability and implied
warranties for fitness, are valid only until Warranty Expiration Date as labeled on the product.
This Linear Corporation Warranty is in lieu of all other warranties express or
implied.
For warranty service on Linear equipment return product, at sender’s expense to:
U.S.A. Canada
Linear Corporation Linear Canada Inc.
2350 Camino Vida Roble 673 Consortium Court
Carlsbad, CA 92009 London, Ontario, Canada N6E 2S8
Attention: Repairs Department Attention: Repairs Department
Ph# (800) 392-0123 Ph# (519) 685-3020
IMPORTANT !!!
Linear radio controls provide a reliable communications link and fill an important need in
portable wireless signalling. However, there are some limitations which must be observed.
For U.S. installations only: The radios are required to comply with FCC
Rules and Regulations as Part 15 devices. As such, they have limited
transmitter power and therefore limited range.
Receivers may be blocked by radio signals that occur on or near their
operating frequencies, regardless of code settings.
A receiver cannot respond to more than one transmitted signal at a time.
Infrequently used radio links should be tested regularly to protect against
undetected interference or fault.
A general knowledge of radio and its vagaries should be gained prior to
acting as a wholesale distributor or dealer, and these facts should be
communicated to the ultimate users.
Copyright © 1990 Linear Corporation 200866 B
D-8C & D-8CW
Eight Channel
Digital Security Receiver
Code Setting
Instructions
2055 Corte Del Nogal
Carlsbad, CA 92009
(619) 438-7000 • (800) 421-1587
CA (800) 321-1845 • FAX (619) 438-7043
Customer/Technical Service: (800) 392-0123
LINEAR CORPORATION P/N: 200866 B
D-8C CODE SETTING INSTRUCTIONS
2 OF 2
LINEAR CORPORATION P/N: 200866 B
D-8C CODE SETTING INSTRUCTIONS
2 OF 2
TRANSMITTER SWITCH #
CHANNEL #
OFF
1 2 3
1 OFF OFF
OFF
ON
OFF
OFF OFF
OFF
OFF
OFF
OFF
OFF
2
3
4
5
6
7
8
ON
ON ON
ON
ON ON
ON ON
ON ON ON
Table 1. Channel
Coding Matrix
A NORTEK COMPANY
D-8CW SHOWN
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