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GLR270312, GLR270412, GLR270324, GLR270424
Multi-Channel 27MHz Gigalink™ Receiver
Features
• 3 or 4 Channels
• Wide supply connection – 11.0 to 28.0 Volts AC/DC
• Highly sensitive receiver input stage. When used with GLT27…. series transmitters and an ANT27L antenna, an operating range of 350 metres (980 ft) is possible.
• Three (GLR2703) or Four (GLR2704) relay outputs. Both outputs can be operated simultaneously.
• Crystal controlled for high stability and performance.
• Dual Conversion to reduce interference.
• Uses micro-controller technology that can be re-programmed to suit unique applications.
• Momentary, flip-flop and latching output modes is user selectable.
Applications
• automatic gates, security, timer controlled outputs and simple on/off functions etc
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GLR270312
3-Channel 12V Relay |
GLR270324
3-Channel 24V Relay |
GLR270412
4-Channel 12V Relay |
GLR270424
4-Channel 24V Relay |
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 Download DatasheetProgramming Instructions
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Description
The GIGALINK™ is an advanced Remote Control technology available in the world today. GIGALINK™ is an invention that has revolutionised the entire Remote Control technology including Elsema's earlier version of FMT- … and FMR- … series. The GLR.... series state-of-the-art invention brings a new dimension in the world of Remote Control technology in domestic, commercial and industrial applications.
The innovative microcontroller technology replaces the traditional dip switch coding which eliminates any possible code grabbing. Special features such as over four billion code combinations, ability to program any number of transmitters to any of the receiver outputs, three user selectable modes, dual conversion superhet and operational over a wide voltage range all adds up to the most advanced and secure Remote Control available.
Four billion codes
The user can easily change the code on all the channels. Momentary joining the two CC pins on the receiver board sets all channels to one random code. One of 4,294,967,296 possibilities is selected.
Code Programming
During single code programming, the 4-way dip switch selects the channel to be programmed. The table below shows the setting to select a different channel.
Dip Switch |
Channel |
1 |
2 |
Output Relay |
OFF |
OFF |
1 |
ON |
OFF |
2 |
OFF |
ON |
3 |
ON |
ON |
4 |
After selecting the correct channel, the receiver channel is ready to be single code programmed. Follow the steps outlined in the receivers instruction sheet titled single code programming to complete the code programming.
If all the receiver channels are to be programmed onto a multi channel transmitter, then follow the steps outlined in the receivers instruction sheet titled channelised code programming. This does not require the user to set the 2-way dip switch since all receiver channels will be programmed sequentially onto the transmitters channels.
The receiver power must be connected when single or channelised code programming.
When programming is completed and the GIGALINK cable is removed from the multi channel receiver-coding socket, the 2-way dip switch is used to select different output modes. This is described below.
Different Modes for the Output
Modes are user selectable from the 4-way dipswitch. Dipswitch 1 corresponds to relay channel 1 and dipswitch 2 corresponds to relay channel 2 and so forth.
| Momentary Mode |
If the dipswitch is “off” the relay will be in momentary mode. |
| Flipflop Mode |
If the dipswitch is “on” the relay will be in flipflop mode. |
| Latching |
If latching is required (Relay stays on until power is removed) the latching link should be inserted and soldered into the two holes to the right of the 4-way dipswitch.
This Link will enable the corresponding relays to latch. E.g. When dip switch 1 is “on” relay 1 will be in latching mode. When dip switch 2 is “on” relay 2 will be in latching mode. And so on. If the dip switches are off the relays will be in momentary mode.
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Dual Conversion Superhet
The multi channel receiver is crystal controlled using dual conversion. Dual conversion is where the received frequency is mixed twice, using a crystal at both mixing stages. This results in less interference, enabling the receiver to operate in noisy industrial applications, improves operating performance, which allows the receiver to pass EMC and stringent radio regulations around the world.
AC/DC Supply and Antenna
AC/DC power supply and antenna is connected via a screw-type terminal block. Do not connect the supply to the 2.5-mm coding socket since connection may damage the microcontroller.
Unique Code System
The microcontroller EEPROM allows large volume users to have a unique code. This enables Elsema to offer everyone "your own" radio control.
Case
The multi-channel receivers are supplied without a case, this allows the receiver to be integrated according to your needs. Elsema has available a Quick Mount bracket which enables easy mounting to walls, roof etc.
Products in the Range
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GLR270312
3-Channel 12V Relay |
GLR270324
3-Channel 24V Relay |
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GLR270412
4-Channel 12V Relay |
GLR270424
4-Channel 24V Relay |
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Technical Data
| Supply Voltage |
GLR2703/4-12 :
11.0 to 14.0 VAC/DC
GLR2703/4-24 :21.0 to 28.0 VAC/DC
Can use Elsema AC power pack (PP12 or PP24)
Supply lines should be less than 3 metres long to comply with radio frequency authorities. |
| Current Consumption |
GLR2703/4-12 :
7mA standby at 12VDC, 110 mA if all relays "ON" at 12VDC
GLR2703/4-24 :7mA standby at 24VDC, 60mA if all relays "ON" at 24VDC |
| Receiver Type |
Dual Conversion Superheterodyne |
| Receiving Freq |
27.195MHz (Other freq available on 27.045, 27.145, & 27.455MHz. The 27.455 freq is not available for Australia) |
| Type of Crystal Used |
10.245MHz, Fundamental, 20pf, 30ppm
16.495MHz, Fundamental, 20pf, 30ppm |
| Operating Temperature Range |
-5 to 50°C |
| 1st IF Freq |
10.7MHz |
| 2nd IF Freq |
455kHz |
| Selectivity |
-6dB at ±5kHz
-20dB at ±6kHz |
| Image Rejection |
At 26.285MHz better than -60dB |
| Sensitivity |
1uV (for output to activate) |
| Type of Demodulation |
Narrow-bandwidth Frequency Modulation (FM) |
| Occupied Bandwidth |
±5kHz |
| Decoding System |
Microcontroller based 96-bit word |
| Code Combinations |
4,294,967,296 |
| Output |
Three / Four change over relay outputs, rated at 5 Amps/240 Volts |
| Connections |
Supply, Antenna & Outputs: Screw type terminal block |
| Antenna |
50 ohms, 27MHz CB-Antenna or approximately 1m long & 1mm thick piece of wire |
| Dimensions |
130 x 70 x 20mm |
| Mounting Hole Size |
3.97mm or 5/32" |
| Weight |
127g |
| Microcontroller |
Can be re-programmed to suit your customised needs |
| LED |
Four On-board LEDs to indicate which output is on |
| Useable Transmitters |
All Elsema Type 27MHz GLT-... series |
| Useable Operating Range |
Up to 350m with proper 50 ohms, 27MHz CB-Antenna. Up to 200m with 1m long antenna wire. Antenna wire should be extended and away from metal. Ranges asume line-of-sight operation. |
Block Diagram
Connection Diagram
GLR2703/4 12/24 V AC/DC Application
GLR2703/4 240/110 VAC Application
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