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8 Specifications
8.1 Operating environment
CAUTION
• Meeting operating environment specifications does not constitute any guarantee against damage to or
malfunction of this equipment.
• Use AC adapter and battery charger indoors (normal temperature).
8.2 Other specifications
Operating temperatures
Insertion tube
In air : -25 to 100°C
In water: 10 to 30
°C
Other parts than above
In air : -10 to 40°C (Battery-powered operation)
0 to 40
°C (AC adapter-powered operation)
Operating atmospheric pressure
Insertion tube In air : Normal pressure (1,013 hPa)
In water: 1,013 to 1,368 hPa
Other parts than above In air : Normal pressure (1,013 hPa)
Operating environment humidity
All parts 15 to 90% (relative humidity)
Liquid resistance
Insertion tube No trouble when exposed to machine oil, light oil or 5% saline solution.
Other parts than above
Waterproofing
Insertion tube Waterproof construction. Can be used underwater with the optical adapter
attached.
Other parts than above Water resistant proof construction. Use in water is not supported. The instrument is
not water-resistant if the battery cover, SD card cover, or AC adapter connector cap
is open.
Optical system
For optical adapter specifications, see "8.3 Optical adapter specifications" (P. 43).
Distal end
Outer diameter V84 Series: φ4.0 mm
V86 Series: φ6.0 mm
Distal end rigid section
length
See the distal end rigid section length specification of the optical adapter in use.
Angulation IV8420U, IV8435U, IV8620U : UP, DOWN, RIGHT and LEFT each 130° *
IV8635U : UP, DOWN, RIGHT and LEFT each 120° *
*when insertion tube is straight.
Flexible section
Flexibility IV84 series: Fixed hard tube from the distal end to the main unit.
IV86 series: TF tube with flexibility gradually increasing toward the distal end.
Outer diameter IV84 series: φ4.0 mm
IV86 series: φ6.0 mm
Index lines An orange line is drawn 500 mm from the distal end. White lines are drawn at every
1,000 mm from the distal end. The number of white lines is increased at every
1,000 mm (1 line at 1,000 mm, 2 lines at 2,000 mm).
Total length IV8420U: 2 m IV8435U: 3.5 m
IV8620U: 2 m IV8635U: 3.5 m
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