General Troubleshooting Operation
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© 2021 Cypress Solutions
Complete Manual: CTM-200 R2 (Revision 1.4)
8.
General Troubleshooting Operation
All LEDs remain off when
the device is powered
•
No power is being applied to the CTM-200
•
Check power supply make sure min. 9 VDC is being supplied
PWR LED flashing
•
The device is in standby mode
•
Ensure the standby signal is connected to greater than 9VDC
•
Ensure the supply voltage is greater than 9VDC.
•
Remember that the device is designed to go into standby
mode if the standby signal is off after a configured time period
(e.g. 10 seconds by default)
PWR LED ON all other LED
OFF
•
Device is booting Linux
Device is constantly
rebooting every 4 minutes
with no user input.
Only PWR LED and GPS
LED (solid or flashing) are
on.
•
Incorrect cellular device is configured. The CTM-200 is
configured by default to auto connect to a cellular network. If
the CTM-200 determines that communication with the internal
cellular radio module or device is not working, it will attempt to
reset the communication port; this will result in continual
system reboots if incorrect module/device is selected.
GPS LED flashing
•
No valid GPS fix. The GPS antenna requires a clear view of the
sky to obtain a valid GPS fix. The time to fix can vary from a
few seconds to several minutes depending on conditions.
•
GPS LED flashing has no impact on cellular connectivity.
RF LED OFF
MODE LED OFF
IP/DATA LED OFF
•
RF signal may not be available; CTM-200 is located in an area
of no cellular activity.
•
Cellular device is not registered on the network; make sure
radio module/device/SIM has been activated on the network.
•
Incorrect configuration of internal radio module, ensure correct
device has been configured
IP/DATA LED OFF
RF LED (solid or flashing)
MODE LED (solid or
flashing)
•
CTM-200 is registered on the network and is in an area of 3G or
4G coverage but device has not obtained an IP address
•
cmd ipadr
will return 0.0.0.0
MODE LED OFF
All other LED’s ON (solid or
flashing)
•
CTM-200 is in an area where no 3G or 4G connection is
available (2G only)
•
Cellular module/device does not support diagnostics so MODE
LED is disabled. Device may still perform at 3G or 4G levels