Technical information

APPENDIX B
3/31/2008 Rev. 4.3 B-1
APPENDIX B
CI-301LA LIGHT ATTACHMENT
The CI-301LA Light Attachment works with the flat, Open System chambers supplied by the
manufacturer. It can be used indoors or outdoors as an alternative to sunlight and an intensity-
controlled light source. The light emitted covers the photosynthesis wave band.
Figure B-1. Lamp Control Unit and Lamp.
To mount the CI-301LA (see Figure B-2), loosen the securing foot, place the lamp over the chamber,
and screw in the foot against the chamber. The knob on the control unit allows you to manually adjust
the light intensity, which ranges from 0 to 2,000 mmol m-
2
s-
1
. Note that the light is equipped with
cooling fans, which have exhaust vents (along the sides), and intake vents (on the bottom). Keep these
vents clear at all times during use to avoid overheating.
Refer to Page A-1 in APPENDIX A to connect the power supply into the 12V connector on the
control unit front panel.
An Accessories cable (one end with an eight pin connector, the other end with four plugs) should be
used in order to have the CI-301LA controlled by the CI-340 instrument. Connect the eight-pin
connector of the Accessory control cable to the Accessory control Port (see Figure 2-2) on the end of
the CI-340. Insert the plug with blue color band into the External Control jack on the CI-301LA
control unit (Page A-4 in APPENDIX A).
Note: Turn the power off to the CI-301LA when attaching cables.
In order to allow the CI-340 instrument to control the CI-301LA, turn the intensity control knob
counter clockwise all the way down. Keep the knob in that position during the operation. The CI-
301LA lamp illuminates when it is working.
A small cable with a plug connected to the lamp is the PAR sensing output. Make sure that the lamp
covers the chamber window area so the PAR intensity emitted from the lamp or the external PAR
sensor can be utilized. It is recommended that if the cable plugs into the CI-340, the external PAR
sensor should not be plugged in.