Linear Swimming Pool Gate Alarm GRD User Manual

The GRD has a “F” connector for attaching an antenna. The  
receiver is supplied with a 9-inch local antenna, a three foot  
75 ohm coaxial cable, and a bulkhead connector for  
mounting the antenna outside the gate operator enclosure.  
DESCRIPTION  
STEP 1 Open receiver case. To open case,  
squeeze sides of case and rotate upward.  
GRD  
The GRD is a digital receiver designed for use with automatic  
gate operators or systems where a remote antenna is  
needed. The GRD-2 will operate two gates, one gate and  
an obstacle sensor, or channel one can open the gate and  
channel two can close the gate.  
GRD-2  
RECEIVER  
3-FOOT  
CABLE  
All of the Delta-3 transmitters, including the two and  
four-channel transmitters, are compatible with the GRD.  
The Delta-3 radio format provides 256 different digital codes.  
The codes are set using the 8-position coding switches in  
the units. In order to avoid the possibility of duplicating codes  
in adjacent systems, factory set codes should not be used.  
DELTA-3  
GATE  
RECEIVER  
CASE SCREWS  
The receivers can operate from 12-30 volts AC or 10.5-30  
volts DC and are normally powered from the gate operator.  
The relay contact(s) are rated at 5 amps @ 32 volts AC/DC  
NEC Class 2 circuit.  
Installation Instructions  
MOUNTING  
HARDWARE  
LOCAL  
NUT  
ANTENNA  
BULKHEAD  
CONNECTOR  
WASHER  
SQUEEZE BOTH SIDES AT TABS  
AND TILT UPWARD  
(800) 421-1587 www.linearcorp.com  
STEP 2A GRD & GRD-2 Channel 1 code  
setting. To set a code, select any valid  
combination of ON and OFF positions for the  
switch keys numbered 1- 8. Use a paper clip to  
set the eight keys.  
STEP 2B GRD-2 Channel 2 code setting.  
Select any valid combination of ON and OFF  
positions for each of the switch keys numbered  
1 - 8. Use a different code combination than that  
used for channel one switch.  
STEP 3 Transmitter code setting. Locate  
the coding switch on the transmitter and set the  
eight keys identical to those on the desired  
channel of the receiver. Be sure they match  
STEP 4 Connect receiver relay output.  
Connect the appropriate channel wires (Ch. 1 -  
two gray wires), (Ch. 2 - two yellow wires) to the  
appropriate activation terminals on the gate  
operator.  
exactly. If using  
a
two or four-channel  
transmitter, refer to the coding instructions  
included with the transmitter for proper system  
coding.  
GATE OPERATOR  
SET CODE  
SWITCH KEYS  
MANUAL ACCESS  
REQUEST  
SET CHANNEL TWO  
CODE SWITCH KEYS  
CHANNEL ONE  
SWITCH KEYS  
REMOVE BATTERY  
ACCESS DOOR  
CHANNEL TWO  
SWITCH KEYS  
1
COMMON  
CHANNEL  
ONE  
GRAY  
2
SWITCHES IN  
TRANSMITTER  
RELAY  
3
24 V RADIO POWER  
THIS SWITCH  
HAS 2, 3 & 6 ON  
THIS SWITCH  
HAS 2, 4 & 6 ON  
OBSTACLE INPUT  
CODING  
SWITCH  
YELLOW  
CHANNEL  
TWO  
1
2
DO NOT USE:  
ALL ON; ALL OFF;  
ALT ON/OFF, OR OFF/ON  
COMMON  
THIS SWITCH  
HAS 2, 3 & 6 ON  
DO NOT USE:  
ALL ON; ALL OFF;  
ALT ON/OFF, OR OFF/ON  
OBSTACLE  
LINEAR LIMITED WARRANTY  
This Linear product is warranted against defects in material and workmanship for twelve  
STEP 5 Connect receiver to power.  
Connect the red power input wire to the 24VDC  
radio power and the black wire to the common  
terminal on the gate operator. Alternately connect  
wires to a 12-24 VAC transformer.  
STEP 6 Mounting the receiver. Use the  
screws provided to mount the receiver within the  
operator housing. This provides protection from  
the elements. Secure case with case screws.  
STEP 7 Connect antenna. Connect the  
coaxial cable to the “F” connector on the receiver.  
Drill a 3/8" hole on the top of the operator housing  
for the bulkhead connector. Insert the connector  
and secure it with the nut and lock washer.  
Connect the cable and antenna to the bulkhead  
connector.  
(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.  
GATE OPERATOR  
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.  
MANUAL  
ACCESS REQUEST  
MOUNT RECEIVER  
INSIDE GATE  
HOUSING  
SLIDE WEATHER  
RESISTANT CAP  
OVER CONNECTION  
IMPORTANT !!!  
CONNECT COAXIAL  
CABLE TO "F"  
CONNECTOR  
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.  
OBSTACLE  
BLACK  
1
INSERT BULKHEAD  
CONNECTOR THROUGH  
OPERATOR HOUSING  
COMMON  
1
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.  
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.  
2
RELAY  
RED  
24 V RADIO POWER  
3
SECURE CASE  
SECURE CONNECTOR  
TO HOUSING USING  
WASHER AND NUT  
1
1
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.  
CLOSED WITH TWO  
SCREWS AT BOTTOM  
OF CASE  
INPUT VOLTAGE REQUIREMENT  
12 TO 30 VOLTS AC  
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.  
CONNECT CABLE TO  
BULKHEAD CONNECTOR  
10.5 TO 30 VOLTS DC  
Copyright © 2003 Linear Corporation  
220812 A  
 

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