PerkinElmer LS 55, Руководство пользователя

Страница: 122 / 202

122 . LS 55 User’s Guide
Introduction
This section describes the instrument resident software in the Model LS 55
Luminescence Spectrometer.
All the instrument facilities described in this section are controlled via a single
RS232C communications channel at 9600 baud. Data is output via the RS232C link
and is also output in analogue form. The instrument has the following facilities:
• The SCAN BUSY logic output is asserted when the instrument is collecting data
for output via the RS232 channel.
• Two general-purpose logic inputs are provided. One (EVENT) is used to mark
output data with timed events; the other (START) is used by external devices
to prompt data collection.
NOTE: In older instruments, the EVENT output is labeled 'Remote Start' and the
START input is labeled 'Remote Integrate".
• Both monochromators may be driven to any valid wavelength (200-800 nm for
excitation and 200-900 nm for emission). They may be scanned either
individually or synchronously. When synchronously scanning either a constant
wavelength separation or a constant frequency separation can be selected. All
these operations can be aborted.
• The source is automatically turned off 30 minutes after the last external control
command is received if data collection is not active.
• Data collection may be set up to operate in fluorescence, phosphorescence or
bio-/chemi-luminescence modes. Data may be collected while the
monochromators are stationary or scanning. In phosphorescence, bio or
chemi-luminescence modes the main emission gate and delay times are fully
adjustable in steps of 10 microseconds. Control is also available over the
number of flashes and length of a data collection cycle. In bioluminescence
mode the source is turned off and ratioing disabled.