PerkinElmer RETICON LD3500 Series, Instruction Manual

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PerkinElmer
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Optoelectronics 22
6.4.6 Focusing the Camera
1. Adjust the external light source for an acceptable image intensity without
blooming.
2. Adjust the Z position of the camera to achieve the sharpest transition from
black to white.
Note:
Performing this action only ensures that the test target is imaged in focus on the
sensor array within the limitations of the customer supplied lens.
6.4.7 Verifying Camera Gain Control
1. Reposition the test target in the Y direction such that the gray shade strip
is displayed in place of the black and white bars.
2. Adjust the external light source such that the white portion of the strip is
displayed without blooming and note the number of gray shade steps that
are visible.
3. Decrease the external light source intensity such that some of the darker
gray shade steps are no longer discernable.
4. Increase the video gain of the camera and verify that the gray scale steps
reappear.
5. Return the video gain to the default setting of 0dB.
6.5 Verifying Slave Mode Operation
Note:
In order to verify the Slave Mode you must have made provisions for the required
external signals in the frame grabber interface as described in section 4.
1. Make sure that the camera is powered down.
2. Select the Slave Mode as required for specific model.
3. Power up the camera.
4. Set the Line rate of the LT (Line Transfer) signal to:
76
+
£
N
frequency MCLK
rate Line
5. Set exposure control active in accordance with slave mode timing.
6. Make sure that the gray shade strip is displayed. Adjust the external light
source and camera gain as required to obtain a barely visible display.
7. Adjust exopsure period and observe light amplitude of signal..
8. Power down the camera and configure it for your specific application.