Feasa ICT Series User Manual

FEASA LED ANALYSER
ICT VERSION
Capture Sequence Mode
Sequence Capture Mode:
Introduction
The Sequence Capture functionality of the LED Analyser allows the user to take multiple
captures in rapid succession and store them in the LED Analyser. The results of these captures
can be downloaded at any time after the capture sequence has been completed.
This feature is useful when testing LEDs, that when combined, are generating a visual pattern
that the user can see. An example of this would be 'soft start' lighting when entering or exiting
a vehicle. Another example is when testing the 'visual sweep' on sequential Indicators in
vehicles.
The number of captures that can be stored in memory depends on the number of fibers used
during the test. If all 20 fibers of a 20 Channel Analyser are used the maximum number of
captures that can be stored is 400. If a single fiber is used then the number of captures
increases to 8000.
There are two ways to store commands in the Analyser – one way stores the command in RAM
memory and the second way stores the command in Flash memory. When a command is
stored in Flash memory it is not lost when power is removed from the Analyser. When the
command is stored in RAM it will be lost when power is removed.
However, there is a limit to the number of write cycles to Flash memory so it is recommended
to store commands that are being changed under program control in RAM memory.
Commands that begin with “put” will be stored in RAM while commands that begin with
“set” will be stored in Flash memory.
All commands can use upper or lower case characters.
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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