PerkinElmer LS 55, Руководство пользователя

Страница: 123 / 202

RS232 Commands . 123
• Collected data is excitation corrected, block averaged, ratioed, normalized, and
smoothed. Excitation correction is achieved by reference to a table of
correction factors held in non-volatile memory. Smoothing filters are
'Savitsky-Golay' or binomial types with filter widths user selectable as any odd
number between 3 and 101 points. Normalization is by linear interpolation
between nearest points to return data at specified abscissa interval.
• Data output is via RS232 and analogue output. Data may be output from
anywhere on the data processing chain with the restriction that only one data
value per mains cycle may be Output. Data to the analogue output may be
scaled.
• Facilities are included to generate the excitation correction tables.
• Both slits are independently driveable. Automatic facilities are available for
calibration. Calibration data is held in non-volatile memory. Preset
photomultiplier (PMT) voltages are set up as a function of excitation slit setting.
• The emission filter wheel may be driven to any position independent of other
instrument conditions. The excitation filter is selected automatically according
to the current excitation monochromator position, unless a polarizer or blank
position has been selected. A manual override to the automatic excitation filter
selection is provided. A separate emission polarizer wheel accessory is
provided.
• If fitted, a total emission accessory (emission mirror) can be driven in or out of
the beam.
• A timed-event marker accessory fitted with temperature sensor and stirrer is
supported.
• An x-y table may be used as a well plate multisampler or as a TLC plate reader.
When used as a TLC plate reader, the probe may be scanned at constant speed
parallel to a selected axis.
• A magnetic stirrer is available as an accessory and may be set to one of two
possible speeds.
• A peristaltic pump is supported. It may be driven in either direction for a
specified period of time.
• A motor driven, four position cell holder is supported.
NOTE: The accessories fitted internally to the instrument (for example, polariser
wheels, emission mirror) are detected on power on and upon a warm start.
If an accessory is removed while the power is on, the software will
recognize this but will not recognize a refitted accessory until after a power
on or warm start.