Keysight Technologies TrueIR U5855A Service Manual page 8

• The device uses a highly-sensitive infrared detector. Ensure to comply with the
C A U T I O N
• Do not apply excessive stress to the LCD screen, the focus adjustment ring, or the
• Avoid direct rays or shock to the visible or infrared camera lens of the device.
• The following condition may be observed when the device acquires or saves a
• The following condition may be observed in outdoor data acquisitions. This
• If bright sunlight enters the visible camera, the entire picture may become reddish.
• Do not input laser beam (CO
• If the device is used in a manner not specified by the manufacturer, the device
C A U T I O N
• Always use dry cloth to clean the device. Do not use ethyl alcohol or any other
• Do not permit any blockage of the ventilation holes of the device.
VI
requirements in "Environmental Conditions" on page VII
camera lens to avoid damages.
visible image. This condition is not a device failure.
• The color of the visible image changes periodically or may be different from the
real target object when the image is replayed in the freeze mode.
To avoid this condition, perform image acquisitions by changing the camera angle.
In this case, it is recommended to acquire visible images by observing the image on
the screen.
condition is not a device failure.
• If the contrast is great (e.g., due to backlight), the object may appear darker on
the camera display as compared to the brightness of the background.
To avoid this condition, control the frame so that it covers only the target object.
To avoid this, shield the camera from bright sunlight.
protection may be impaired.
volatile liquid to clean the device.
laser, etc.) to avoid damage to the infrared detector.
2
when using the device.
U5855A Service Guide