Feasa ICT Series User Manual

FEASA LED ANALYSER
ICT VERSION
Synchronous Serial Mode
Wavelength & Saturation & Intensity (WSI)
This command will instruct the LED Analyser to output the Wavelength, Saturation and
Intensity of a LED. All the LED data should have been previously captured.
The code for this command is 0x71 – 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 2
bytes of data – for Dominant Wavelength.
Command Data Transmitted Data Received
Read Wave, Sat, Int 0x71 + fiber num (1byte) Wavelength (2bytes), Saturation
(1byte), Intensity (3bytes)
To convert the Dominant Wavelength data to a decimal number use the formula:-
Wavelength = (byte1*256 + byte2)
Saturation = (byte3)
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 = (byte4 * 65536) + (byte5 * 256) + byte6
Note:- The data output in all the bytes are hexadecimal numbers.
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Feasa ICT Series Specifications

General

Operating Temperature	0°C to 50°C
Storage Temperature	-20°C to 70°C
Application	LED testing
Channels	1
Communication Interface	USB
Power Source	USB
Measurement Parameters	Dominant Wavelength, CCT, CRI
Accuracy	±2% in flux

Summary

About this Manual

IMPORTANT INFORMATION for Programmers

Colour and Saturation

Intensity

White LED's

Setting Tolerance Limits for Colour and Intensity

In-Circuit Test Mode

Frequency Out Port Protocol

Details the protocol for data output via frequency signals.

ICT Connector Pin-out and Descriptions

Lists and describes the function of each pin on the ICT connector.

ICT Logic Levels & Cycle Times

Specifies electrical characteristics and timing for ICT interface.

In-Circuit Test Frequency Mode

Initialize the LED Analyser for Capture

Describes the procedure to initialize the analyser for data capture.

Set the Sensitivity Level of the Analyser (setfactor)

Capture LED Data (HSI or WSI or xyI) non PWM LED's

Capture LED Data (HSI or WSI or xyI) PWM LED's

Synchronous Serial Mode

Synchronous Serial Commands

Lists commands executable via the Synchronous Serial Port.

Capture for non-PWM LED's

Read Hue, Saturation and Intensity (HSI)

Read RGB and Intensity (RGBI)

Serial Port Control (RS232)

Capture Commands

AUTO CAPTURE - Store LED Data

Command to automatically capture and store LED data.

MANUAL CAPTURE# - Store LED Data for a specific range

Command to capture and store LED data for a specified range.

Get Data Commands

Under Range Condition

Describes conditions when LED light is insufficient for the selected range.

Over Range Condition

Describes conditions when LED light is excessive for the selected range.

getRGBI## - Get RGB and Intensity for a LED

getHSI## - Get Hue, Saturation and Intensity

General Commands

General Set Commands

Commands for adjusting various settings of the LED Analyser.

set/putFACTOR## - Set the Exposure Factor

set/putLOG - Change the Intensity Response of the Analyser to Logarithmic mode

General Get Commands

getSTATUS - Get a summary of the Led Analyser details

Retrieves a summary of the Analyser's configuration and status.

User Calibration Mode

setcalibration# - Select the user cal setting

Selects a specific user calibration set.

ResetUserCal - Reset the usercal setting to factory default

Resets the selected user calibration set to factory default values.

External Capture Mode

Set up the external capture

Configures the external capture function.

Sequence Capture Mode

Set/Put SequenceMode# - Set sequence mode for Fibers

Sets the sequence mode for using all or individual fibers.

Set/Put SequenceCapture##(#) - Set Sequence Capture Time

Sets the capture time in milliseconds for sequence capture.

Set/Put SequenceNumber###(#) - Set the Number of Captures

Sets the number of captures to store in sequence mode.

Set/Put SequenceThreshold##### - Set the Intensity Threshold

Sets an intensity threshold for binary conversion of readings.

CaptureSequence - Start the Captures

Starts the sequence capture function.

Step-by-Step approach to Testing a LED

PWM LED Mode

Effect of PWM on Intensity Testing

Explains the effect of PWM on intensity testing.

Testing a 7-Segment Display

Specifications

Warranty