Operating Instructions
Page 66
Doc. 15301-RevB (2023-11-24)
16. Storage and Maintenance
The Tern dive computer and transmitter should be
stored dry and clean�
Do not allow salt deposits to build up on your dive
computer� Rinse your computer with fresh water to
remove salt and other contaminants�
Do not wash under high pressure jets of water as it
may cause damage to the depth sensor�
Do not use detergents or other cleaning chemicals
as they may damage the dive computer� Allow to dry
naturally before storing�
Store the dive computer and transmitter out of direct
sunlight in a cool, dry and dust free environment�
Avoid exposure to direct ultra-violet radiation and
radiant heat�
16.1. AMOLED Burn In
One of our favorite features of the Tern is the high-
contrast OLED screen� Unfortunately a trade-off with
any OLED is the risk of burn in over time�
Burn in refers to a ghostly image that remains on the
screen when the same screen content is displayed for
a long time� We employ techniques to try and prevent
burn in, but given the nature of a dive computer
display, some burn in is inevitable�
Burn in is more likely when you use your Tern as a
daily wear watch due to increased screen on time�
Things You Can Do To Reduce Burn In
• Reduce screen brightness
• Adjust timeouts to turn off the display sooner
• Remove info from the watch display
17. Servicing
There are no user serviceable parts inside the Tern�
Do not tighten or remove the faceplate screws� Clean
with water ONLY� Any solvents may damage the Tern
dive computer�
Service of the Shearwater Tern may only be done at
Shearwater Research, or by any of our authorized
service centers�
Contact Info@shearwater�com for service requests�
Evidence of tampering will void your warranty!
18. Glossary
NDL - No Decompression Limit� The time, in
minutes, that can be spent at the current depth until
mandatory decompression stops will be required�
O
2
- Oxygen gas�
OC - Open circuit� Scuba diving where gas is exhaled
into the water (i�e� most diving)�
PPO
2
- Partial Pressure of Oxygen, sometimes PPO2�
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