Linear D-22C warranty Digital, Code Setting, Instructions, Transmitter Description

D-22C

TRANSMITTER DESCRIPTION

The D-22C transmitter contains two 8-position dipswitches, one

The D-22C is a two-button, two-channel hand-held digital radio

for each pushbutton. The transmitter can be used with two

transmitter with independent button coding. The transmitter can

single-channel receivers or one multi-channel receiver.

perform a variety of remote switching tasks when used with any of

✶ CAUTION: All Standard Digital transmitters and receivers should be

DIGITAL

Linear’s Standard Digital “D” Series Receivers. Typically the

recoded prior to installation and operation.

D-22C is used in wireless or hybrid wireless/hardwire security

In order to avoid the possibility of duplicating codes in adjacent

TRANSMITTER

systems.

systems, factory set codes should not be used. In addition, among

The transmitter is powered by a 9-volt battery. Pressing either

the valid codes available, four others should not be used. These

button will send that button’s unique code. Press either button

include: all switches set ON or OFF and switches set in an

Code Setting

for at least 2 seconds to activate the transmitter. The red LED

alternating ON/OFF or OFF/ON pattern.

on the face of the transmitter will glow as the unit transmits and

The D-22C will transmit as long as a pushbutton is pressed.

Instructions

the receiver with the matching digital code will activate.

Depending on conditions (interference, obstacles and distance to the

A snap-on plastic transmitter clip with a screw and double-stick

receiver) the receiver output may or may not stay activated for as

tape for mounting the transmitter are provided with the unit.

long as the transmitter is sending a signal.

The Standard Digital radio format provides up to 256 different

✶ CAUTION: If using two receivers, be sure they are located at least 10 feet

apart.

digital codes. The code is set using the 8-position coding switches

(760) 438-7000 ∙ FAX (760) 438-7043

in the transmitter and receiver(s).

USA & Canada (800) 421-1587 & (800) 392-0123

Toll Free FAX (800) 468-1340

STEP 1 Locate coding switches. The code switch for the left

STEP 2A Coding for single-channel receivers. Pick two valid

STEP 2B Coding for two-channel receivers. Pick one valid

button can be accessed by removing the battery access door

OFF/ON codes and set them on switches 1-8 on each coding

OFF/ON code and set it on switches 3-8 in the receiver. Match the

located on the back of the transmitter case. To access the code

switch in the transmitter. Set each receiver’s coding switch 1-8 to

same code on switches 3-8 on both switches in the transmitter.

switch for the right button, the unit’s rear cover must be removed.

match the code set for the proper button in the transmitter.

Set both the transmitter switches 2 to OFF. Set one transmitter

Identify the coding switches and note that they have eight

CODING SWITCHES IN

CODING SWITCHES

switch 1 to OFF and the other switch 1 to ON. 2-Channel receiver

positions, with ON and OFF clearly marked.

D-22C TRANSMITTER

IN TWO RECEIVERS

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

REMOVE BATTERY DOOR

TO ACCESS THE RIGHT BUTTON

SET

MATCH

1-8

1-8

TO ACCESS LEFT BUTTON

CODING SWTICH, REMOVE THE

CODING SWITCHES IN

CODING SWITCHES

CODING SWITCH

CASE SCREW AND BACK OF CASE

LEFT

RECEIVER #1

D-22C TRANSMITTER

IN TWO-CHANNEL RECEIVER

BUTTON

ACTIVATES FROM

MATCH

CODING

LEFT BUTTON

3-8

SWITCH

LEFT

EXAMPLE

EXAMPLE

BUTTON

3 & 6 ON

3 & 6 ON

RECEIVER

CODING

SET

EXAMPLE

CHANNEL #1

SWITCH

3-8

ACTIVATES FROM

SET

MATCH

3 & 6 ON

LEFT BUTTON

SWITCH 1 OFF

1-8

1-8

RIGHT

RECEIVER #2

MATCH

RECEIVER

BUTTON

ACTIVATES FROM

3-8

CHANNEL #2

CODING

RIGHT BUTTON

ACTIVATES FROM

SWITCH

EXAMPLE

RIGHT BUTTON

EXAMPLE

EXAMPLE

RIGHT

3 & 6 ON

LEFT BUTTON

2, 3, 6 & 7 ON

2, 3, 6 & 7 ON

BUTTON

EXAMPLE

CODING

3 & 6 ON

CODING SWITCH

SWITCH

SWITCH 1 ON

STEP 3 Test the equipment. Connect the receiver to its power

BATTERY REPLACEMENT

LINEAR LIMITED WARRANTY

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

The battery should last 12 to 18 months with normal use. When

This Linear product is warranted against defects in material and workmanship for twelve (12) months. The

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

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

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

activation of relay and solid state output receivers. Operate the

needs to be replaced. Remove the battery access door to change

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

transmitter from various locations to determine the radio range.

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

arising out of or in connection with use or performance of this product or other indirect damages with

battery door and foam battery pad when finished.

respect to loss of property, revenue, or profit, or cost of removal, installation, or reinstallation. All implied

DCV

DCV

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.

All products returned for warranty service require a Return Product Authorization Number (RPA#). Contact

Linear Technical Services at 1-800-421-1587 for an RPA# and other important details.

REPLACE BATTERY WITH

IMPORTANT !!!

MEASURE

MEASURE

MEASURE

Linear radio controls provide a reliable communications link and fill an important need in portable wireless

FRESH 9-VOLT BATTERY

signalling. However, there are some limitations which must be observed.

RESISTANCE

VOLTAGE

VOLTAGE

✶ 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.

POWER

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

NORMALLY

POWER

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

COMMON

✶ Changes or modifications to the device may void FCC compliance.

OPEN

OUTPUT

OUTPUT

✶ 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

SHORT

dealer, and these facts should be communicated to the ultimate users.

-TO-

RELAY

VOLTAGE

COMMON

OUTPUT

OUTPUT

OUTPUT

RECEIVER

RECEIVER

RECEIVER

Copyright © 1997 Linear Corporation

200857 C