Hoefer DQ300 - Manual (Page 16)

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3.2 Instrument Power Up
To turn on the DQ300, press the <ON/OFF>
button. The instrument takes 5 seconds to warm
up. After warming up, the DQ300 is ready for
operation.
To adjust the display contrast press the <UP> or
<DOWN> buttons.
3.3 Fluorescence Channels
Choose the appropriate channel for your
analysis. To do this, press the <UV/B> button
to toggle between the 2 channels. The activated
channel name will be displayed in the lower left
corner of the Home Screen.
UV = Ultraviolet excitation
Blue = Blue light excitation
See page 2 for Optical (Wavelength)
Specifications.
3.4 Calibration Standard Value
Before performing a calibration, assign a
convenient numeric value between 1 and 999 for
your standard solution. (e.g. enter 100 if your
calibration standard is 100 ng/mL).
1
Press the <STD VAL> button.
2
Use the <UP> or <DOWN> button to adjust the stan-
dard value. Holding the button down will activate
faster scrolling.
3
When finished, Press <ESC> or <ENTER> to accept
the value and return to the Home Screen.