Linear D-8C manual Receiver Installation, Checkout and Test, Linear Limited Warranty

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.

CHANNEL #	TRANSMITTER SWITCH #
	1	2	3
1	OFF	OFF	OFF
2	ON	OFF	OFF
3	OFF	ON	OFF	Table 1. Channel
4	ON	ON	OFF	Coding Matrix
5	OFF	OFF	ON
6	ON	OFF	ON
7	OFF	ON	ON
8	ON	ON	ON

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

D-8CW SHOWN

A NORTEK COMPANY

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