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2
C H A P T E R
Right Display
The right display consists of five digits used to display wavelength. The
wavelength may be displayed in nanometers (nm) or wavenumbers (cm
Relative wavelength (
a measurement head is attached that only measures power the right display is
frozen with the wavelength used to determine detector responsivity.
Bargraph
The bargraph consists of 16 LED indicators, each representing 7% of the full scale
power within the selected gain range. The indicators on the end of the bargraph
are always illuminated to provide 0% and 100% reference points. The ZOOM
button forces the bargraph into a mode that is ten times more sensitive. In zoom
mode, the end points of the bargraph flash.
Buttons/Indicators
Each of the front panel functions is now described in detail. The OMM-6810B
forms a basis for different optical measurements depending on which Optical
Measurement Head is attached. Functions may change form slightly or be
disabled depending upon which measurement head is attached to the instrument.
If a disabled button is pressed E-715 will appear on the right display. The keypad
is backlighted for viewing in a dark environment.
Local Control
If the Local Lockout state has been activated by the host computer even the
LOCAL button is disabled. In this case, the host computer must deactivate Local
Lockout before front panel control can be restored.
When the unit is in LOCAL mode, press the LOCAL button to display the GPIB
address on the left display (i.e. " -01- "). The address is displayed for three
seconds or until the LOCAL button is pressed again.
10
OMM-6810B
I N S T A L L A T I O N A N D O P E R A T I O N
Front Panel Controls
Δ
) may be shown on the right display in either units. When
The LOCAL button is used when GPIB operations are
implemented. When the 6810B is in REMOTE, the LED above the
LOCAL button is illuminated and all front panel controls except
LOCAL are disabled. Press LOCAL to return the device to local
control, thus, re-enabling the front panel.
-1
).
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Troubleshooting
