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GLR2701SS, GLR2702SS
Single & 2-Channel 27MHz Gigalink™ Receiver with Open Collector Output
Features
• One or two channel outputs
• Open Collector Output
• Available with either a Molex female or terminal block connector.
• Uses Gigalink technology, this involves using a receiver cable to program the transmitter. Some transmitters and receivers are programmed through the air. This is very risky since another person can grab your code.
Applications
• Security, wireless activation/deactivation of domestic or industrial alarms
• Gate operation
• Panic buttons
• Remote Activation of lights
• Simultaneous operation of multiple on/off functions
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GLR2702SS
2-Channel |
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Click image to enlarge
 Download DatasheetProgramming Instructions
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Description
The GLR2701SS and GLR2702SS use the advanced GIGALINK™ technology to combine the decoding system and FM receiver to form the new GIGALINK™ Strip receiver. The receiver user has the choice of one or two channel outputs. The GLR2701SS has a single channel output and GLR2702SS has two channel outputs. The outputs are solid state using the BC337 transistor with open collector. When the outputs are switched to ground the receiver receives the correct code from the GIGALINK™ transmitter.
The GLR2701SS and GLR2702SS are available with either a terminal block or the Molex female connector.
The screw type terminal block is used to connect the supply and the antenna. The ordering code for terminal block is GLR2701SST or GLR2702SST .
The Molex female connector is used with the male low profile connector, part number 6WLP or high profile connector part number 6WHP. (See design dimensions page for more details) These connectors can be soldered onto any type of printed circuit board. This enables the user to integrate a 27MHz receiver onto the printed circuit board for remote control operation.
The antenna can be a piece of wire, approximately 1 metre long (3 feet) and 1 millimetre (1/25 th inch) in thickness. If a piece of wire does not give suitable reception the GLR2701SS and GLR2702SS can be connected to a coaxial cable with a proper 27MHz CB-Antenna. Elsema stocks the ANT27M 27MHz CB-Antenna.
Code Programming
During single code programming , the dip switch selects the channel to be programmed. The table below shows the setting to select a different channel.
Dip Switch |
Channel |
Remarks |
1 |
2 |
Output Transistor |
OFF |
OFF |
1 |
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ON |
OFF |
2 |
Only for GLR2702SS |
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.
Code Programming - Channelised
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 2-way dipswitch. Dipswitch 1 corresponds to output channel 1 and dipswitch 2 corresponds to output channel 2.
| 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 2-way dipswitch. This will enable corresponding outputs to latch. |
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.
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GLR2701SS
1-Channel |
GLR2702SS
2-Channel |
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Technical Data
| Supply Voltage |
7.5-28 VDC. Supply lines should be less than 3m long to comply with radio frequency authorities |
| Current Consumption |
7mA standby at 12 VDC supply |
| 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 |
GLR2701SS: 1 Open Collector Transistor Output
GLR2702SS: 2 Open Collector Transistor Outputs |
| Output Transistor |
Max switching 100mA/40VDC |
| Connections |
Molex female connector, male M2373-6A connector is soldered to PCB (available from Elsema). Or 5-way screw type terminal block |
| Antenna |
50 ohms, 27MHz CB-Antenna or approximately 1m long & 1mm thick piece of wire |
| Dimensions |
88 x 43 x 15mm |
| Mounting Hole Size |
3.97mm or 5/32" |
| Mounting Hole Spacing |
Length 81.28mm (3.2"), Width 35.56mm (1.4") |
| Weight |
GLR2701SS: 43g
GLR2702SS: 45g |
| 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
Note A:
GLR2701SS has 1-way DIP switch
GLR2702SS has 2-way DIP switch
Note B:
Available with Molex female connector for PCB mounting or 5-way screw type terminal block
Dimensions
The dimensions below show the position the male connector and plastic mounting studs should be when designing the GLR2701SS and GLR2702SS receiver onto a printed circuit board.
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