FEASA LED ANALYSER
ICT VERSION
In-Circuit Test Mode
Step-by Step Sequence for LED Analyser Auto Capture &
Read HSI or WSI or xyI
Ensure the Led Analyser is in the correct Frequency mode prior to test.
Using command getictstatus.
1. /Reset /Initialize Function
Initialize all inputs to the following logic levels
set Reset to "1"
set WE_bar to "1"
set OE_bar to "0"
set Addr_0 to "1"
set Addr_1 to "1"
set Addr_2 to "1"
set Addr_3 to "1"
set Addr_4 to "1"
set WE_bar to "0" ! This executes the reset command
Wait for RyBy_bar_bar to go to Logic "1"
Wait for RyBy_bar_bar to go to Logic "0" ! If RyBy_bar goes high & then low the initialize was good.
set WE_bar to "1"
2. /Auto Capture Function
! Auto Range Capture Address 00000 00 dec (350ms)
! Manual Range #1 Capture Address 10101 21 dec (650ms)
! Manual Range #2 Capture Address 10110 22 dec (200ms)
! Manual Range #3 Capture Address 10111 23 dec (22ms)
! Manual Range #4 Capture Address 11000 24 dec (4ms)
! Manual Range #5 Capture Address 11001 25 dec (2ms)
Hold all logic levels as per the end of the reset function
set Addr_0 to "0"
set Addr_1 to "0"
set Addr_2 to "0"
set Addr_3 to "0"
set Addr_4 to "0" ! Address 00000 is AUTO CAPTURE
set WE_bar to "0"
Wait for RyBy_bar to go to Logic "1"
Wait for RyBy_bar to go to Logic "0" ! If RyBy_bar goes high & then low the capture command was good.
set WE_bar to "1"
3. Read the Hue(Colour), Saturation and Intensity or the Dominant Wavelength,
Saturation and Intensity or the xy chromaticity, Intensity of Fiber Number 1
Hold all logic levels as per the end of the Capture function
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