dji ZENMUSE H20 Series Manuel de l'utilisateur - Page 16

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Zenmuse H20 Series User Manual

The temperature measurement accuracy is affected by various factors:

1) Reflectivity of objects – shiny metals with high reflectivity will reflect more of the background

radiation and result in lower accuracy, whereas objects with matte surfaces will produce a higher

accuracy.

2) Temperature of background radiation – sunlight has a great influence on the temperature

measurement accuracy, direct or reflected sunlight should be avoided from the infrared thermal

camera.

3) Air temperature and humidity – the temperature and humidity have been calibrated before delivery,

but some temperature measurement errors are inevitable. Extreme temperatures or humidity levels

will affect the measurement accuracy.

4) Distance between the camera and the object – the default distance used in calibration is 5 m, and

the temperature measurement is most accurate at this distance. Deviations from this distance will

lower the accuracy.

5) Emissivity of objects – the emissivity of the object will affect the temperature measurement

accuracy. Generally, accuracy increases proportionally to emissivity. Emissivity is affected by

factors such as the material, the roughness or the degree of oxidation of the object's surface.

When measuring a blackbody 5 m away at a windless 25℃ indoors, the camera provides

an accuracy of up to ±2℃ or ±2% (whichever is the larger value). Since the emissivity of

different blackbody varies, this measurement result only represents the accuracy of the tested

blackbody, for reference only.

Updating Firmware

Ensure that the Zenmuse H20 series gimbal and camera is securely mounted onto the aircraft and

the aircraft is powered off. Ensure that there is enough free space on your microSD card and the

Intelligent Flight Batteries are fully charged.

1. Visit DJI official website and go to Zenmuse H20 series download page.

2. Select the latest firmware to download.

3. Copy the downloaded firmware update file to the root directory of the microSD card.

4. Insert the microSD card into the microSD card slot of Zenmuse H20 series gimbal and camera.

5. Power on the aircraft, the gimbal and camera will start to perform an auto-check, then it will start to

update automatically and the buzzer will beep to indicate the status.

6. Restart the device after the firmware update is completed.

Alarm

4 short beeps

1 long beep

1 long beep followed by 2 short beeps

Continuous long beep

Ensure that there is only one firmware update file on your microSD card.

Do not power off the aircraft or detach the gimbal and camera during updating the firmware.

Description

An update file is detected, preparing for update.

Updating firmware, do not stop the update.

The firmware update was successful.

The firmware update failed, please try to update again.

Contact DJI support for help if needed.