Linear D-22A User Manual

D-22A

DIGITAL

TRANSMITTER

Code Setting

Instructions

[phone] • FAX [phone]

USA & Canada (800) 42 1- 15 87 & (800) 392-012 3

Toll Free FAX (800) 46 8- 13 40

The D-22A is a hand-held digital radio transmitter often called a “Panic Button”.

The transmitter can perform a variety of remote switching tasks when used with

any of Linear’s Standard Digital “D” Series Receivers. Typically the D-22A is used

in wireless or hybrid wireless/hardwire security systems.

The transmitter is powered by a 9-volt battery. Activate the transmitter by pressing

and holding the pushbutton for at least two seconds. The red LED on the face

of the transmitter will glow as the unit transmits and the receiver with the matching

digital code will activate.

The Standard Digital radio format provides 256 different digital codes. The code

is set using the 8-position coding switches in the transmitter and receiver.

✶ CAUTION: All Standard Digital transmitters and receivers should be

recoded prior to installation and operation.

In order to avoid the possibility of duplicating codes in adjacent systems, factory

set codes should not be used. In addition, among the valid codes available, four

others should not be used. These include: all keys set ON or OFF and keys set in

an alternating ON/OFF or OFF/ON pattern.

The D-22A will transmit as long as the pushbutton is pressed. Depending on

conditions (interference, obstacles and distance to the receiver) the receiver output

may or may not stay activated for as long as the transmitter is sending a signal.

STEP 1

Locate coding switch.

Remove the battery access

door located on the back of the transmitter case. Identify the

coding swit ch and note that it has eight positio ns, with ON and

OFF clearly marked.

STEP 2A

Coding for single-channel receivers.

Pick any valid

combination of OFF/ON codes and set them on switch keys 1-8

in the receiver (or note code already set in receiver if adding to

an existing installation). Match the same code on switch keys 1-8

in the transmitter.

STEP 2B

Coding for two and four-channel receivers.

Pick

any combination of OFF/ON codes and set them on switch keys

3-8 in the receiver. Ma tch the same code on switch keys 3- 8 in the

transmitter. Set the

transmitter

switches 1 & 2 to select the

receiver

channel that it will activate. 2 & 4-Cha n n el r ec eiv er sw itch keys

1 & 2 are unused and can be set in any position.

STEP 2C

Coding for eight-channel receivers.

Pick any

combination of OFF /ON co des an d set them on swit ch ke ys 4- 8 in

the receiver. Match the same code on switch keys 4-8 in the

transmitter. Set the

transmitter

switches 1, 2 & 3 to select the

receiver

channel that it will activate. 8-Channel receiver switch

keys 1, 2 & 3 are unused and can be set in any posit ion.

STEP 3

Test the equipment.

Connect the receiver to its power

source. With relay output receivers, listen for the relay click when

the transmitter is activated. A multi-meter can be used to detect

activation of relay and solid state output receivers. Operate the

transmitter from various locations to determine the radio range.

BATTERY REPLACEMENT

The battery should last 12 to 18 month s with normal u se. When

the red LED lights dimly, or not at all when transmitting, the battery

needs to be replace d. R em o ve the battery access door to change

the battery. Any type of 9-volt battery can be used. Replace the

battery do or an d f oam bat t ery pa d whe n f in ish ed .

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:

Linear Corporation Repairs Department

2580 Pioneer Avenue, Suite C

Vista, CA 92083

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.

✶

A receiver cannot respond to more than one transmitted signal at a time and may be blocked by radio signals

that occur on or near their operating frequencies, regardless of code settings.

✶

Changes or modifications to the device may void FCC compliance.

✶

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 © 1994 Linear Corporation 200855 D

REMOVE BATTERY

ACCESS DOOR

CODING

SWITCH

CODING SWITCH IN

D-22A TRANSMITTER

SET KEYS 1-8 TO

ANY VALID CODE

OR NOTE EXISTING CODE

CODING SWITCH IN SINGLE

CHANNEL RECEIVER

MATCH CODE

ON KEYS 1-8

2 OR 4-CHANNEL

RECEIVER

CODING SWITCH

SET KEYS

3-8 TO ANY

VALID CODE

KEYS 1 & 2

IN RECEIVER

ARE UNUSED

MATCH

3-8

MATCH

3-8

MATCH

3-8

MATCH

3-8

D-22A CODE SWITCH OPTIONS

SET

1 OFF

2 OFF

SET

1 ON

2 OFF

SET

1 OFF

2 ON

SET

1 ON

2 ON

TRIGGERS RECEIVER CHANNEL 1

TRIGGERS RECEIVER CHANNEL 3

TRIGGERS RECEIVER CHANNEL 2

TRIGGERS RECEIVER CHANNEL 4

MATCH

4-8

D-22A CODE SWITCH SETTINGS FOR 8-CHANNEL RECEIVERS

SET

1 OFF

2 OFF

3 OFF

TRIGGERS RECEIVER CH 1

MATCH

4-8

SET

1 OFF

2 OFF

3 ON

TRIGGERS RECEIVER CH 5

MATCH

4-8

SET

1 ON

2 OFF

3 OFF

TRIGGERS RECEIVER CH 2

MATCH

4-8

SET

1 ON

2 OFF

3 ON

TRIGGERS RECEIVER CH 6

MATCH

4-8

SET

1 OFF

2 ON

3 OFF

TRIGGERS RECEIVER CH 3

MATCH

4-8

SET

1 OFF

2 ON

3 ON

TRIGGERS RECEIVER CH 7

MATCH

4-8

SET

1 ON

2 ON

3 OFF

TRIGGERS RECEIVER CH 4

MATCH

4-8

SET

1 ON

2 ON

3 ON

TRIGGERS RECEIVER CH 8

NORMALLY

OPEN

COMMON

MEASURE

RESISTANCE

RELAY

OUTPUT

RECEIVER

VOLTAGE

OUTPUT

RECEIVER

SHORT

-TO-

COMMON

OUTPUT

RECEIVER

OUTPUT

POWER

MEASURE

VOLTAGE

OUTPUT

POWER

MEASURE

VOLTAGE

DCV DCV

REPLACE BATTERY WITH

FRESH 9-VOLT BATTERY