Product Manual

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20-62 VHF & UHF TRANSMITTER
Product Manual
Sea Air and Land Communications Ltd, 10 Vanadium Place, Addington, Christchurch 8024, New Zealand June 2020
Trigger Input Configuration
The 20-62 can be configured to transmit messages in response to the state of the trigger inputs.
Features:
• A message can be triggered by a high-to-low or a low-to-high transition.
• A message may be sent multiple times from a single trigger event to ensure reliable
reception.
• The message repeat time can be specified.
• The input messages can be transmitted with the watchdog timer to indicate the current
state.
• A message can be sent at power up if the input is not in a specified state.
• A message may be repeated continuously while the input is held in a specified state.
• POCSAG rapid can be selected for faster relay control.
• A minimum trigger hold time (de-bounce time) may be specified to prevent false
triggers.
• Trigger inputs are internally pulled high if they are disconnected.
Example input configuration
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