Jenway 6300 Ser Man
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7.1 The Diagnostics Mode
The Diagnostics mode is accessed using the following Special Key
function, hold down the right arrow key <>> while turning the
power on. The main display now shows the linearised signal from
the detector in mV and the resolution of the wavelength display has
increased to 0.5nm.
7.2 Shutter and Filter Control
Once the diagnostics mode has been activated further presses of the
right arrow key <>> will toggle the dark shutter alternately
between the open and closed positions. With the covers still on the
instrument the actual position of the dark shutter can be determined
by the main display that will in general have a very low (zero)
reading when the shutter is closed and a very high reading when
the shutter is open.
Once the diagnostics mode has been activated alternate presses of
the print key will toggle the Infra-red filter in and out of the light
path. A similar effect to the above can be used to determine the
actual position of the filter when the instrument covers are in place;
of course the difference between the ‘in’ and ‘out’ readings will be
greater at higher wavelengths.
7.3
Lamp Control
Once the diagnostics mode has been activated alternate presses of
the left arrow key (<<>) will reduce the lamp voltage to 5V (dim)
and then return it to 12V. This function is automatically used in the
start up tests to accurately detect the zero order position. For safety
reasons it should also be used at all times when working on the
instrument with any covers removed such that the lamp is exposed.
7.4
Zero Order Calibration
Warning;-
This procedure can be used to re-set the stored wavelength
calibration data, so a new wavelength calibration must be carried
