Deep SUNA Manual
For SUNA running firmware version 2.4 or later
10. Troubleshooting
10. Troubleshooting
10.1 Sensor Is Not Responsive
Check Power
Confirm that sufficient power reaches the sensor. Use a voltage meter to confirm that
the power cable supplies 8–18 VDC. See section 3.2 Specifications for the cable pin-
out.
Reset Sensor
It is possible for the sensor to get stuck in an undefined state if its input power is
sporadically out-of-range. In that case, the sensor should be powered down for 60
seconds, and then re-powered.
Check Power Consumption
Using a power supply with an accurate current indication will tell if the sensor is
operating at all, and what operating state it may be in.
If the current is above 500 mA, the sensor is acquiring data. Inserting a piece of white
paper into the sampling volume should show a bright spot, showing that the sensor lamp
is operating.
If the current is above 5 mA, the sensor is in standby, and should respond to input over
its serial input.
If the current is above 100 µA, the sensor is in a low-power mode, and should respond
to input over its serial input.
If the current is below 100 µA, the sensor is not operating. Please contact Satlantic for
further assistance.
Test Serial Cable
The sensor may appear to be non-responsive due to a faulty communication cable. The
user can check the communication cable for continuity. See section 3.2 Specifications
for the connector and cable pin-out.
Operating Mode
The sensor may be unresponsive to the received input because it is in an unexpected
operating mode.
If a connection via SUNACom does not succeed, a terminal emulator connection may
be attempted.
Regardless if the operating mode, sending a $ character to an operational sensor will
generate a response.
Copyright © 2013, Satlantic LP, All rights reserved
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