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Related documents:
Set up Nexion 1500 series modems to a radio
Simulate radio connection between two Nexion modems
with a custom cable
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Q. How do I set S114 and S115 ?
A. Registers S114 and S115 adjust the amplitude of the audio signal. Low audio levels will result in inconsistent data transmission and an overdriven signal will cause data corruption.
Configuring S114 (start with S114=2) and S115 (start with S115=3).
- Set both modems into command mode. Command mode is enabled automatically when broadcast mode is disabled i.e. Set S103=0, S104=0 and S105=0.
- Send a test tone from modem 1: AT&T3
- On modem 2, display diagnostics: AT%Q and take note of the level. Adjust S115 (transmit) first on modem 1 and S114 (receive) on modem 2 until a %Q level of as close to 1000 as possible is achieved (note: remember to re-enable AT&T3 after making changes to S115).
- Clear the test tone on modem 1: AT&T
- Reverse the procedure and repeat to correctly set the registers on modem 2.
- If any of S103, S104 and S105 were initially configured, set them back.
- Save the settings on both modems: AT&W.
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