Nikon D90 - Digital Camera SLR Benutzerhandbuch - Seite 18

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When the standard viewfinder is installed the red and green LED's on the

hot shoe are visible right above the viewfinder, through the back window of

the housing. In case a 45° viewfinder or a straight viewfinder is installed, the

red and green LED's on the hot shoe are visible through the gap right above

the viewfinder.

As soon as the HugyCheck system detects a pressure between

950 and 850 hPa, the red LED will blink once each second.

When the HugyCheck system detects a pressure between 850 and

750 hPa, the red LED will blink 3 times each second.

When a pressure of 750 hPa (or less) is registered the red LED will

stop blinking and the green LED will take over.

In case the housing hasn't been closed properly or in case an O-ring should

be faulty, the pressure of 750 hPa will not be reached or will not be kept. In

this case a loss of under pressure will be registered by the system and the

red LED will be reactivated while the green LED will stop blinking.

We strongly recommend to start the vacuum procedure at least

When opening the housing after a dive, the under pressure first has to be

released by unscrewing the one way valve from the bulkhead.

Hugyfot Housing for

Install the one-way valve into the 3rd bulkhead

and remove the sealing cap. Insert the plug on the

electrical vacuum pump into the one-way valve and

press the button on the pump.

With the stan-

dard viewfinder

installed, the

LED's on the

hotshoe are

visible through

the back

window.

30 minutes prior to the dive.

Nikon D90

With the 45° or

straight view-

finder installed,

the LED's on the

hotshoe are vis-

ible through the

gap above the

viewfinder.

User manual