Problem:
The settings changed to the previous values after power off.
Solution:
After changing the settings, do not forget to issue the appropriate
save
command (
led save
,
th
save
, etc) to store the settings to the EEPROM.
Note: some settings, such as
thresholds
, are stored to the EEPROM immediately.
5.6.2 Changing Settings Causes Reboot
Problem:
The device restarts upon changing some settings, and the SSH connection is lost. After reboot
the settings return to its previous values.
Cause:
The problem occurs when the new configuration requires more power from the PoE network than
the previous one. The PoE power limit is exceeded and the PoE switch turns the power off.
Solution:
Check total power consumption by the
power
command. The maximum output power of the
PoE class 3 power source is 15.4 watts. Due to the power loss in the cable, the maximum power consumption
of the powered device should not exceed 13 watts. Change power settings to fit the limit. The higher the
camera's power consumption, the lower should be the power setting of the LEDs.
5.6.3 Reboot Cycle at Power up
Problem:
The device restarts continuously and never reaches the command prompt, making the settings
management impossible.
Cause 1:
Power consumption exceeds the PoE limit. The incorrect power settings are stored in the
EEPROM and are applied at each startup attempt, causing restart.
Solution 1:
Disconnect the camera or the LEDs physically to allow the device to start successfully.
Reduce the power settings or restore the default settings by the
default
command. Connect back the camera
and the LEDs.
Cause 2:
Power consumption is too low, and the PoE switch recognizes a disconnect. It may occur if the
camera is not connected to the housing and the fans as well as the LEDs are turned off in the settings.
Solution 2:
Connect the camera to the PoE output of the housing.
5.6.4 Camera Never Starts after Preheat
Problem:
When the preheat feature is enabled, the camera never starts.
Cause:
Due to the low ambient temperature, it may be not enough heating power to reach the target
temperature threshold.
Solution:
Increase the power setting for the preheat by the
ph power
command or reduce the target
temperature by the
ph ton
command. The power setting for the preheat can be higher because the camera
does not consume power during the preheat.
5.6.5 LEDs Overheat
Problem:
The LEDs reduces the power and the
overheat
message appears in the output of the
led
command.
:led
LED: ON Power=100% (70%) Temp=+70.5'C
Overheat!
The temperature of the LEDs reaches the
Tmax
limit.
Cause 1:
The cooler fans are turned off or failed.
Solution 1:
Check the fans settings by the
fan
command. Ensure that the fans are connected and
running.
Cause 2:
The ambient temperature is too high.
Solution 2:
Use the automatic mode (see the
led auto
command), at which the LEDs are on only in the
night-time, when the ambient temperature is usually lower. Reduce the power of the LEDs.
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