Linear D-22C User Manual
D-22C
DIGITAL
TRANSMITTER
Code Setting
Instructions
(760) 438-7000 • FAX (760) 438-7043
USA & Canada (800) 42 1- 15 87 & (800) 392-012 3
Toll Free FAX (800) 46 8- 13 40
STEP 1
button can be accessed by removing the battery access door
located on the back of the transmitter case. To access the code
switch for the right but t o n, the unit’s rear cover must be removed.
Identify the coding switches and note that they have eight
positions, wit h ON an d OFF c learl y mar ked.
Locate coding switches.
REMOVE BATTERY DOOR
TO ACCESS LEFT BUTTON
CODING SWITCH
The code switch for the left
TO ACCESS THE RIGHT BUTTON
CODING SWTICH, REMOVE THE
CASE SCREW AND BACK OF CASE
LEFT BUTTON
CODING SWITCH
TRANSMITTER DESCRIPTION
The D-22C is a two -button, two-channe l hand-held digital rad io
transmitter with independent button coding. 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-22C is used in wireless or hybrid wireless/hardwire security
systems.
The transmitter is powered by a 9-volt battery. Pressing either
button will send that button’s unique code. Press either button
for at least 2 seconds to activate the transmitter. 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.
A snap-on plast ic transmitter clip with a screw and double- stick
tape for mounting the transmitter are provided with the unit.
The Standard Digital radio format provides up to 256 different
digital codes. The code is set using the 8-position coding switches
in the transmitter and receiver(s).
STEP 2A
OFF/ON codes and set them on switches 1-8 on each coding
switch in the transmitter. Set each receiver’s coding switch 1-8 to
match the code set for the proper button in the transmitter.
CODING SWITCHES IN
D-22C TRANSMITTER
LEFT
BUTTON
CODING
SWITCH
RIGHT
BUTTON
CODING
SWITCH
Coding for single-channel receivers.
CODING SWITCHES
SET
1-8
SET
1-8
EXAMPLE
3 & 6 ON
EXAMPLE
2, 3, 6 & 7 ON
IN TWO RECEIVERS
MATCH
1-8
EXAMPLE
MATCH
1-8
EXAMPLE
2, 3, 6 & 7 ON
3 & 6 ON
Pick two valid
RECEIVER #1
ACTIVATES FROM
LEFT BUTTON
RECEIVER #2
ACTIVATES FROM
RIGHT BUTTON
The D-22C transmitter contains two 8-position dipswitches, one
for each pushbutton. The transmitter can be used with two
single-channel receivers or one multi-channel 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 availabl e, fo ur othe rs sho uld not be use d. These
include: all switches set ON or OFF and switches set in an
alternating ON/OFF or OFF/ON pattern.
The D-22C will transmit as long as a pushbutton is pressed.
Depending on condi tions (interferenc e, obstacles and di stance to the
receiver) the r eceiver outpu t may or may no t stay activ ated for as
long as the transmitter is sending a signal.
✶ CAUTION: If using two receivers, be sure they are located at least 10 feet
apart.
STEP 2B
Coding for two-channel receivers.
Pick one valid
OFF/ON code and set it on switches 3-8 in the receiver. Match the
both
same code on switches 3-8 on
both
Set
the transmitter switches 2 to OFF. Set one transmitter
switches in the transmitter.
switch 1 to OFF and the other switch 1 to ON . 2-C hannel rece iver
switches 1 & 2 are unused and can be set in any position.
CODING SWITCHES IN
D-22C TRANSMITTER
MATCH
LEFT
BUTTON
CODING
SWITCH
RIGHT
BUTTON
CODING
SWITCH
3-8
MATCH
3-8
EXAMPLE
3 & 6 ON
SWITCH 1 OFF
EXAMPLE
3 & 6 ON
SWITCH 1 ON
CODING SWITCHES
IN TWO-CHANNEL RECEIVER
SET
3-8
EXAMPLE
3 & 6 ON
RECEIVER
CHANNEL #1
ACTIVATES FROM
LEFT BUTTON
RECEIVER
CHANNEL #2
ACTIVATES FROM
RIGHT BUTTON
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.
DCV DCV
COMMON
MEASURE
RESISTANCE
NORMALLY
OPEN
RELAY
OUTPUT
RECEIVER
OUTPUT
MEASURE
VOLTAGE
VOLTAGE
RECEIVER
POWER
OUTPUT
OUTPUT
MEASURE
VOLTAGE
RECEIVER
POWER
SHORT
-TO-
COMMON
OUTPUT
The battery should last 12 to 18 month s with normal u se. When
BATTERY REPLACEMENT
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 .
REPLACE BATTERY WITH
FRESH 9-VOLT BATTERY
This Linear product is warranted against defects in material and workmanship for twelve (12) months. The
Warranty Expiration Date is labeled on the product.
buy direct from Linear or through Linear’s normal distribution channels.
to consumers.
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.
warranties, including implied warranties for merchantability and implied warranties for fitness, are valid only until
Warranty Expiration Date as labeled on the product.
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.
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 © 1997 Linear Corporation 200857 C
LINEAR LIMITED WARRANTY
This warranty extends only to wholesale customers
Consumers should inquire from their selling dealer as to the nature of the dealer’s warranty, if
This Linear Corporation Warranty is in lieu of all other
Linear does not warrant this product
who
All implied
Loading...