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GLT08
GIGALINK™ 8-Channel Encoder for T433 Transmitter
Features
• Transmits ASK digital data
• Baud rates 300 - 4800bps
• Long range - 1km
• Low cost, small size, wide operating voltage, low current consumption
Applications
• Telecommand Systems
• Security Systems
• Alarms
• Radio Data Communications
• Commercial / Industrial Telemetry
This product is Obsolete and is Replaced by the GLT4330112E, GLT4330212E, GLT4330412E, GLT4330812E, GLT433xx12NC |
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Description
The GLT08 is combined with the T433 data transmitter to form a 8-channel transmitter with each channel having an operating range of 1000 metres, line of sight. Connecting both units is simple. The GLT08 has a 3-way terminal block marked as + M - which should be connected directly to the T433 3-way terminal block marked as + M - . If the T433 is with a plastic case the connection is via a socket which is marked + M - . This connection is graphically shown on the right.
Each channel is addressed via the terminal block or the IC socket. The channel is activated when the corresponding channel number is shorted to ground. Each of the eight digital channel codes is stored in a microcontroller, which replaces the traditional dip switch.
The GLT08 and T433 can be purchased with Elsema's C160 weatherproof case and ANT433S UHF antenna.
Battery or DC Supply
Battery operation is optimised using the built-in battery monitoring system. The battery monitoring system alerts the user when the battery level falls below the low battery voltage. The 1 Hz flash from the LED during a transmission indicates low battery. This is an indication that replacement of a battery is necessary.
DC power supply is connected to the 2-way terminal block. Do not connect the supply to the 2.5-mm coding socket since connection may damage the microcontroller.
Channels
Eight channels are accessed using either the sixteen-pin IC socket or the terminal block.
Channel 1 is at the left and channel eight at the right side of the IC socket. Joining the opposite sides of the IC socket pin transmits the channel. The 9-way terminal block can be used to activate each channel with an external switch. This is shown graphically in the technical specifications.
Transmission Modes
The transmitter modes are user selectable by simply setting the 2-Way dip-switch on the transmitter board. Below is a summary of the modes.
Mode |
Dip Sw 1 |
Dip Sw 2 |
Description |
| 1 |
OFF |
OFF |
Off Delay 2 to 62 seconds.
Transmitter will transmit a 1.5-second transmission burst and then stop for the "off delay" time selected. The "off delay" time is user selectable between 2 to 62 seconds by adjusting trimpot on the GLT08. If a second channel is activated both channels will be transmitted immediately. When the "off delay" time lapses, transmitter will transmit another burst. The transmitter will cycle (transmission and off delay) indefinitely, if at least one of the channels is activated and supply is connected. |
| 2 |
ON |
OFF |
Off Delay 1 to 10 minutes.
Same as mode 1 except the "off delay" is user selectable between 1 to 10 minutes. |
| 3 |
OFF |
ON |
5 minute continues transmission.
Transmitter will transmit for 5-minutes, if at least one channel is activated and supply is connected. The 5-minute limit was installed since an indefinite transmission will jam the 433.920MHz for a radius of 1000 metres. |
| 4 |
ON |
ON |
One Burst Transmission.
Transmitter will transmit for approximately 1.5 seconds and then go to standby mode. When another channel is activated and supply is connected, transmitter will emit one new transmission burst. |
Technical Data
| Power Source |
7.5 - 14 VDC |
| Current Consumption |
3mA at 12VDC supply
16uA at standby |
| Battery Monitor |
LED flashes at 1Hz, during transmission, when battery voltage is at 6.5V |
| Operating Temperature Range |
-5 to 50°C |
| Programming Mode |
To program all 8 channels use channelised code programming |
| Dimension |
96 x 70 x 15mm |
| Weight |
52g |
| Mounting |
Suitable to clip into a QM100 |
| Usable Receiver |
GLR433... series |
| Useable Operating Range |
Up to 1000m line of sight when used with the T433 |
Connection
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