Jenway 6300 Ser Man
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with the lamp dimmed can only be produced by the white zero
order light). If this 200mV level can not be achieved then the
grating stops after having rotated the 200nm and an error code Err
5, no peak light level found, is returned.
In correct operation when this 200mV level is detected the grating
rotates in the same direction for a further 200nm but in 0.5nm
steps. For each step an increasing output is returned until the peak
is reached. The grating is stopped when a decrease in output is
measured and by reversing again for one step the position of the
peak is verified. If the grating rotates the full 200nm without the
output increasing and then falling the error code Err 4, no zero
order peak found, is returned.
This test will be failed if samples or cuvettes etc are left in the
sample compartment during the start up routine, if the sample
holder or sampling device in the sample chamber is incorrectly
fitted/aligned such that it obscures the light beam. Also if the
incorrect lamp is fitted, if the lamp has not been fitted correctly, if
the dark shutter is (stuck) in the closed position or through
contamination, degradation or misalignment of other optical
components.
6.2
Photometrics
When the Start Up test has been successfully completed the display
returns to the last settings of wavelength and mode used before the
instrument was turned off.
The wavelength displayed on the lower digital display can be
adjusted by using the up and down arrow keys to select the value
suitable for a specific application.
The cursor can be moved along the menu bar at the bottom of the
screen by using the right and left arrow keys.
Moving the cursor under the %T icon will enable the Transmission
measurement mode, similarly moving it under the ABS icon will
enable the Absorbance measurement mode. These two modes are
calibrated by simply inserting a cuvette or test tube containing a
blank solution in the sample chamber, closing the lid and pressing
the CAL pushbutton. The CAL icon on the display will flash while
