Feasa ICT Series User Manual

FEASA LED ANALYSER
ICT VERSION
Synchronous Serial Mode
x- chromaticity, y-chromaticity & Intensity (xyi)
This command will instruct the LED Analyser to output the xy and Intensity of a LED. All the
LED data should have been previously captured.
The code for this command is 0x50 – this must be transmitted to the LED Analyser followed by
the Fiber Number of the LED to be tested. The Fiber Number is a hexadecimal number in the
range 0x01 – 0x14 (in decimal this represents numbers 1 -20). The Analyser will return 7
bytes of data – 2 bytes for x, 2 bytes for y and 3 bytes for Intensity.
Command Data Transmitted Data Received
Read xy an Intensity 0x50 + fiber num (1byte) x(2bytes) + y(2byte) + Int(3byte)
To convert the x data to a decimal number use the formula:-
x = (byte1*256 + byte2)
To convert the y data to a decimal number use the formula:-
y = (byte3*256 + byte4)
The Intensity value is output in the last 3 bytes with the most significant byte first.
To convert the Intensity data to a decimal number use the formula:-
Intensity = (byte5 * 65536) + (byte6 * 256) + byte7
1000
Note:- The data output in all the bytes are hexadecimal numbers.
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Feasa ICT Series Specifications

General

Brand	Feasa
Model	ICT Series
Category	Measuring Instruments
Language	English