Biotage
®
ELSD-A120 User Manual 33
Using the Detector
4
Operational Parameters
Light Source Intensity (LED)
The detector’s LED intensity can be adjusted in order to bring the
peak response back on-scale. The intensity range can be set between
1 and 100 %, with the default factory setting being 100 % for
maximum sensitivity. The LED setting is stored in memory and is
retained even after a power on/off cycle.
This feature is extremely useful for preparative chromatography
where samples of high concentration can be analyzed which would
otherwise exceed the dynamic range of the detector.
Power Mode
The detector can be configured from the front panel sub-menu (see
“Sub-Menu Screen” on page 29) to start in either RUN or STANDBY
mode when the detector is switched on via the rear power button.
To configure the power mode, select the required status mode (i.e.
STANDBY or RUN) you wish the detector to start-up in from the sub
menu screen (see “Sub-Menu Screen” on page 29). The selected
option will take effect the next time the detector is power cycled.
If RUN mode is selected as the desired power mode, then the detector
will use the operating parameters stored in memory. In the unlikely
event that the detector encounters a fault during power-up, the
detector will automatically switch to STANDBY mode.
Data Output Rate (Hz)
The data output rate (Hz) setting is not used when using the detector
with an Isolera system.
ELSD-A120 performs an automatic auto-zero (i.e. 10 mV) following an
LED change in order to keep the signal on-scale.
All ELSD conditions are retained on power cycling of the detector.
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