Linear GRD Long Distance Coax Receiver Instruction Manual
- June 13, 2024
- LINEAR
Table of Contents
GRD GRD-2
DELTA-3
GATE RECEIVER
**Installation Instructions
800-421-1587 •
www.linearcorp.com
**
DESCRIPTION
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.
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 codein adjacent systems, factory set
codes should not be used.
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.
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.
STEP 1 Open receiver case. To open
case, squeeze sides of case and rotate upward.
STEP 2 AGRD & 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 2 BGRD-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 exactly. If using a two or
four-channel transmitter, refer to the coding instructions included with the
transmitter for proper system coding. STEP 4Connect 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.
STEP 5Connect 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.
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.
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 signaling. 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 © 2003 Linear Corporation
220812 A
Documents / Resources
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Linear GRD Long Distance Coax
Receiver
[pdf] Instruction Manual
GRD Long Distance Coax Receiver, GRD, Long Distance Coax Receiver, Distance
Coax Receiver, Coax Receiver, Receiver
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References
Read User Manual Online (PDF format)
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