Linear DXT-21-EC, DXT-23-EC User Manual

DXT-21/EC
DXT-23/EC

PORTABLE
TRANSMITTERS

Operation Instructions

R&TTE VAEE 27682, EMC, SFT, ETS
Linear Corporation declares that the apparatus DXT-21/EC & DXT-23/EC complies with
the essential requirements and other relevant provisions of Directive 1995/5/EC.

[phone] • FAX [phone]

www.linearcorp.com

)

The DXT-23/EC is a three-button, four-code transmitter. Pressing
either of the transmitter’s front buttons sends codes one and two.
Pressing the small button on the transmitter’s top sends code
three. Pressing both front buttons together sends code four.

RED INDICATOR
LIGHTS WHEN
TRANSMITTING

DXT-23/EC FEATURES

PRESS LEFT BUTTON FOR CODE 1
PRESS RIGHT BUTTON FOR CODE 2

BY

PRESS TOP BUTTON
FOR CODE 3

The DXT-21/EC and DXT-23/EC are battery powered portable
transmitters designed for use with Linear’s DX Format receivers
at the same frequency. Each transmitter can be used in a limitless
number of wireless remote control applications. Pressing a button
on the transmitter sends a digitally coded wireless signal to its
companion receiver.

The digital DX code format features over a million possible codes.
The DX transmitters are precoded at the factory to unique codes, so
no field coding is required. Transmitters can send a signal for up to
10 seconds per activation.

For versatility, any transmitter code can be programmed into any
receiver channel. Receivers must be programmed to the
transmitter code before system testing and operation. Refer to the
receiver’s instructions for details on programming.

Each transmitter is powered from two 3-Volt #2032 lithium
batteries with an expected battery life of up to 5 years. The red
test/operate indicator lights during operation and can be viewed
from the front or the top of the unit. The indicator will glow dimly
during operation when the batteries get low. It will stop lighting
altogether during operation when the batteries are below 4.5 volts.

A removable pocket clip and belt clip are provided for each
transmitter. Either can be attached to the back of the transmitter
allowing the unit to be clipped to shirt pocket or slid onto a belt.

The top button on each transmitter can be hidden with the top
button cover supplied with each unit.

BATTERY REPLACEMENT POCKET & BELT CLIP INSTALLATION

REMOVE BATTERY
ACCESS SCREW

FLIP
TRANSMITTER
OVER

PRODUCT DESCRIPTION

The DXT-21/EC is a two-button, one-code transmitter. Pressing

DXT-21/EC FEATURES

either the round button on the transmitter’s front, or the small
button on the transmitter’s top will send the same signal.

PRESS EITHER BUTTON
TO SEND CODE 1

RED INDICATOR
LIGHTS WHEN
TRANSMITTING

PRESS BUTTONS FOR A
MINIMUM OF 2 SECONDS

ATTACH WITH
THREE SCREWS

BELT
CLIP

BUTTON COVER INSTALLATION LINEAR LIMITED WARRANTY

REMOVE FOUR
SCREWS TO
OPEN CASE

REPLACE WITH
COVER PLATE

PRESS BOTH
FRONT
BUTTONS FOR
CODE 4
(FOR ADDED
SECURITY)

PRESS BUTTONS FOR A
MINIMUM OF 2 SECONDS

REMOVE
TOP BUTTON

SWING BATTERY
COMPARTMENT OPEN

REPLACE
WITH TWO
TYPE 2032
BATTERIES

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 par t 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 warra nties, includ ing 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.

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.

1 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.

1 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.

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

1 Infrequently used radio links should be tested regularly to protect against

undetected interference or fault.

1 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.

IMPORTANT !!!

SIDE UP

ATTACH WITH
TWO SCREWS

POCKET
CLIP

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 prope rty, 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 Dat e 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 Hong Kong 19/F Hounor Industrial Centre, 6 Sun Yip Street Chai Wan, Hong Kong
Attention: Repairs Department

REPAIRS POLICY

Charges will be made for equipment that is not in warranty, shows customer abuse, or is damaged
by the effects of lightning, water, fire, or other abnormal happenings.
Customer’s equipment sent in for repair may be repaired or replaced with new or remanufactured
equipment at Linear’s discretion.
The customer is always responsible for shipping and handling charges to the repairs facility.
Linear will pay return shipping and handling charges on “in warranty” products shipped back to
the customer. The customer will be billed for the return shipping and handling charges on “out of
warranty” products.
There will be a 50% expedite fee for any express requests.
The International Sales Manager must be notified prior to the return of product to Linear. All
international returns must have an International Repair Authorization number (IRA #). The number
must be marked on all packages. Failure to do so will cause delays in processing.

IMPORTANT !!!

Linear radio controls provide a reliable communications link and fill an important need in portable
wireless signaling. However, there are some limitations which must be observed. The radios are
required to comply with local rules and regulations as radio devices. A s 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 regulatory 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 © 2003 Linear Corporation 212625 B

INTERNATIONAL WARRANTY