Ocean Optics RaySphere 1700 Install - Manual (Page 43)

5: Operation
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The terms used in this diagram are defined below:
• Delay: The delay can be set in the software. Valid values are between 0 ms and 160 ms. The delay
values are stored in the trigger electronics to minimize jitter.
• Fixed delay: The spectrometers have an internal fixed delay of 768 µs for the QE65000 and 1034 µs
for the NIRQuest512. These are the minimum delays and are always present. The QE65000 has an
additional fixed delay of 266 µs. As a result, both spectrometers start integration at the same time for
identical user set delays.
All types of delay are taken into account for visualizing of the integration time interval of the
spectrometer in the photocurrent graph. The delays are active for the External, Flash and Manual
modes.
• Integration time: Time interval for spectrum recording. The output represents the average value of
intensity of the light during this time interval.
• Data transfer: It takes several ms to send the data to the computer. During this time the RaySphere
will not react to further trigger signals from the trigger electronics. The spectrometers do not react for
trigger signals until the data transfer is completed. To ensure correct timing, the maximum speed for
data recording is 1 Hz. If SpectraSuite is being used for data recording, use a maximum speed of 5
Hz.