CA-500 Series S/M 4-6 Revised December 2001
4.2.3 Adjustment of Detector Well for analyzing the scattered light
(1) Offset adjustment
1) Insert the ebonite stick for adjusting the offset value in the detector well to be adjusted.
Detection Well
(Immunoassy)
(CH6)
Figure 4-2-3: Detector Well Positions
2) Close the light shield cover.
3) Select channel 1 by using [Channel Change] key, select Low Gain by using [Sensitive] key, and select
[Offset] position by pressing [n] or [p] key.
4) Press [Auto Adjust] key to start the automatic offset adjustment, and when the adjustment is
completed, the alarm sounds.
5) Change Gain to PT Gain and enter Offset value manually in executing Step 3). (Press [+] and [–] keys
or [Manual Entry] key to adjust manually.)
6) Execute Steps 1) to 5) for channels 2 to 4.
(2) High Sensitivity Adjustment (Gain Adjustment)
1) Insert the heated high sensitivity scattering stick (labeled usually as “750”) into the detector well to be
adjusted (CH1 to 4).
2) Close the light shield cover.
3) Select channel 1 by using [Channel Change] key, select High Gain by using [Sensitive] key, and select
[Gain] position by pressing [n] or [p] key.
4) Press [Auto Adjust] key to start the automatic gain adjustment, and when the adjustment is
completed, the alarm sounds.
5) Execute Steps 1) to 5) for channels 2 to 4.
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