Hach DR 2800, Руководство пользователя, Страница: 19 / 96

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Section 4 Start Up
4.1 Powering the Instrument On and Off
1. Plug the external power supply into an electrical outlet, or insert
the battery.
2. Press the On/Off switch for approximately one second to power
on the instrument.
3. Press the On/Off switch for 3 to 5 seconds to turn the
instrument off. An acoustical signal confirms that the instrument
has been powered off.
Note: Do not switch the instrument off and on in rapid succession. Always
wait about 20 seconds before switching the instrument on again,
otherwise you may damage the electronic and mechanical systems.
4.2 Language Selection
The DR 2800 Spectrophotometer software includes several
language options. The first time the instrument is powered on, the
language selection screen will appear.
1. Select the desired language.
2. Press
OK
to confirm the language selection. The self check will
start automatically.
Note: Once the language is selected, the instrument will power up in that
language until a different language is selected. To change the language
after initial installation, press any area of the display with the instrument off.
Turn the instrument on, continue to press the display until the list of
languages is displayed.
4.3 System Diagnostics
Each time the instrument is powered up, a series of diagnostic tests
are performed automatically to ensure operation of major system
components.
This procedure, which takes approximately two minutes, checks the
system, lamp, filter adjustment, wavelength calibration, and
voltage. Each test which functions correctly is confirmed with a
check mark.
The Main Menu is displayed when power up diagnostics are
completed.