FEASA LED ANALYSER
ICT VERSION
Synchronous Serial Mode
Capture for non-PWM LED's
This command will instruct the LED Analyser to capture and store all the LED Colour,
Saturation and Intensity data. There are six Intensity ranges that can be specified to get the
best results from the test.
There are five manual ranges designated Range1, Range2, Range3, Range4 and Range5.
Range1 has the highest sensitivity for low light conditions and the sensitivity is reduced
progressively to Range5 which has the lowest sensitivity. This means that for brighter LED's
the higher Ranges should be used.
The sixth Range uses an automatic exposure and covers the full Intensity range of the
Analyser. This should only be used when it is required to test very dim and very bright LED's
together.
The command codes are shown in Figure 22.
Command Data Transmitted Data Received
Capture Auto Mode 0x55 0xD5 or 0xEE (error condition)
Capture using Range 1 0xA1 0xD5 or 0xEE (error condition)
Capture using Range 2 0xA2 0xD5 or 0xEE (error condition)
Capture using Range 3 0xA3 0xD5 or 0xEE (error condition)
Capture using Range 4 0xA4 0xD5 or 0xEE (error condition)
Capture using Range 5 0xA5 0xD5 or 0xEE (error condition)
Figure 22.
The code 0xD5 indicates a successful completion of the command. If an error occurs then the
code 0xEE will be received. The command should then be re-transmitted.
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