Camera Maintenance

The G2 CCD camera is a precision optical and mechanical instrument, so it

should be handled with care. Camera should be protected from moisture and

dust. Always cover the telescope adapter when the camera is removed from the

telescope or put the whole camera into protective plastic bag.

Desiccant exchange

The G2 CCD cooling is designed to be resistant to humidity inside the CCD

chamber. When the temperature decreases, the copper cold finger crosses

freezing point earlier than the CCD chip itself, so the water vapor inside the

CCD chamber freezes on the cold finger surface first. Although this mechanism

works very reliably in majority of cases, it has some limitations, especially

when the humidity level inside the CCD chamber is high or the chip is cooled

to very low temperatures.

This is why a small cylindrical chamber, filled with silica-gel desiccant, is

placed inside the G2 CCD camera head. This cylindrical chamber is screwed to

the insulated cooled CCD chamber itself.

Warning:

High level of moisture in the CCD chip chamber can cause camera malfunction

or even damage to the CCD chip. Even if the frost does not create on the

detector when the CCD is cooled below freezing point, the moisture can be still

present. It is necessary to keep the CCD chamber interior dry by the regular

exchange of the silica-gel. The frequency of necessary silica-gel exchanges

depends on the camera usage. If the camera is used regularly, it is necessary to

dry the CCD chamber every few months.

G2 cameras revision 3 and higher have three times bigger silica-gel container

capacity compared to previous versions and also better CCD chamber

insulation. So the silica-gel should be exchanged less frequently.

It is also possible bake the wet silica-gel in the oven (not the microvawe one!)

to dry it again. The silica-gel used in G2 cameras changes its color according to

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 56 57 58

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ViewSonic PJ759 - 63 Tft LCD Projector Handbücher

Bedienungsanleitungen und Benutzerhandbücher für Datenprojektoren ViewSonic PJ759 - 63 Tft LCD Projector.
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Viewsonic PJ759 - 63 Tft LCD Projector Betriebsanweisung (70 Seiten)

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Inhaltsverzeichnis

ViewSonic

Compliance Information

Important Safety Instructions

Part names

Projector

Control panel

Rear panel

Remote control

Setting up

Arrangement

(a) Screen size (diagonal)

PJ758/PJ759/PJ760

Connecting your devices

Connecting power supply

Putting batteries

Turning on the power

Power on/off

Turning off the power

Selecting an input signal

Adjusting the volume

Temporarily muting the sound

Operating

Searching an input signal

Selecting an aspect ratio

Adjusting the zoom and focus

Adjusting the position

Using the magnify feature

Freezing the screen

Using the menu function

Advanced Menu

EASY MENU

PICTURE Menu

PICTURE Menu (continued)

IMAGE Menu

IMAGE Menu (continued)

INPUT Menu

INPUT Menu (continued)

(continued on next page)

SETUP Menu

SETUP Menu (continued)

SCREEN Menu

SCREEN Menu (continued)

OPTION Menu

OPTION Menu (continued)

1. Using Security Features

PASSWORD

Transition Detector

Maintenance

Disconnect

Air ﬁ lter

Other care

Troubleshooting

Related messages

Regarding the indicator lamps

Shutting the projector down

Resetting all settings

Speciﬁ cations

Speciﬁ cation

[unit: mm]

Customer Support

Limited Warranty

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ViewSonic PJ759 - 63 Tft LCD Projector Handbücher

Viewsonic PJ759 - 63 Tft LCD Projector Betriebsanweisung (70 Seiten)

Inhaltsverzeichnis

Weitere Produkte und Handbücher für Datenprojektoren ViewSonic