ADInstruments Advanced Features of LabChart Name:

ADInstrumentsAdvanced Features of LabChart

Name:

© 2006 ADInstruments Pty Ltd

Channel Calculations (Arithmetic, Derivative … )

Cyclic Measurements

Data Pad

Macros

Examples

Overview


LabChart Software

Provides easy recording and data integrity

Real-time and offline powerful analysis features

Easy selection of settings and display options

Optional functionality with LabChart Modules and Extensions

Channel Calculations


Channel Calculations

Arithmetic

Derivative

Integral

Digital Filters

Smoothing

Cyclic Measurements


Channel Calculations Demonstration

Cyclic Measurements


Features of Cyclic Measurements

Feature in Channel Calculations

Used to analyze periodic waveforms

Real-time and offline analysis

Preprocesses the signal

Automated Cycle detection

Automated Calculation of Cyclic Parameters


Cyclic Measurements

Setup

Output

Detection Settings

Detection Adjustments

Preview of Detected Cycles

Customizing Presets


Cyclic Measurement Demonstration

Data Pad


Features of Data Pad

A spreadsheet used to log numerical recorded data

3 logging data options Add to Data Pad

Adding a single data point Adding a selection of data

Multiple Add to Data Pad Adding multiple recorded data within a specified duration

Timed Add to Data Pad Real-time adding of recorded data


Data Pad Demonstration

Macros


Features of Macros

A group of recorded LabChart commands, which can be executed with a single command

All recorded commands are played back in the exact sequence they were recorded

Help to speed up repetitive and tedious tasks

Automate recording and analysis of data


Macro Types

Types of Macros Sampling (or Recording) Analysis Combined Sampling & Analysis


Applications of Macros

Example Uses of Macros Sampling

Change the settings for stimulation (Output 1, 2 or Isolated Stimulator)

Set up triggering Save data as a new file Provide a message or alert Add comments


Applications of Macros

Example Uses of Macros Analysis

Repeatedly log waveform parameters into the Data Pad

Print selected data (e.g. from the Zoom window) Find comments and select data before, after or

around the comment


Hints for Writing Macros

Hints for Writing Macros Write down all the steps involved (keep a copy in

LabChart’s Notebook) Break complex operations into several macros then

combine them into one macro Modify the steps of an existing macro to suit your needs Use LabChart’s Online Help Call or email ADInstruments for help


Macro Demonstration

Find and Add all Peaks to Data Pad


Find and Add all Peaks to Data Pad

Macro menu Start RecordingCommand menu Find: Select Go, Start of this block, Set active point, FindMacro menu Repeat While In BlockCommand menu Find: Select Find Data, Next Arrow, Local Maxima, Single

point Selection, Find Add to Data PadMacro menu End Repeat Stop Recording and Name the macro

Continuous Saving - Recording


Data Categories and Types

Files LabChart Data Files LabChart Setting Files Text (txt) Excel (xls)

Data Blocks


Data Blocks


Limitations

Data File (Max Size = 2 GB) Stop Recording, Save the File Close the File Start a New File

Data Block (Max Size = 1 GB) Stop Recording Save Data Start Recording


Limitations

Data File

(Max Size = 2 GB)

DB = Data Block

DB DB DBExample 1

DB DBDB DBExample 2

DB

(Max = 1 GB)

DB

(Max = 1 GB)

Continuous Recording


Sampling and Saving

Sampling Data Accuracy and Precision File Size

Saving Permanent Data Storage Resets Data Block Capacity


Formula (Estimation)

Data Block Size = No. of Channels x Sampling Rate x Recording Duration x 2

Recording Duration = Data Block Size No. of Channels x Sampling Rate x 2

Example The maximum continuous recording duration for 3 channels, sampled at 1k/s is:

Recording Duration = 1 GB/(3 x 1000/s x 2)= 166667 seconds= 46 hours


Formula (Estimation)

Example The maximum continuous recording duration for 3 channels, sampled at 1k/s is:

Recording Duration = 1 GB/(3 x 1000/s x 2)= 46 hours

Therefore if the Data Block was saved, you could then record another new Data Block of similar duration.

File Recording Duration (2 Data Blocks) = 46 x 2= 92 hours


Macro: Long Duration Recordings

Raw Data

Sampling

Data Block

Temp File

New Unique File

File01.adicht

File02.adichtFile03.adicht

Saving

Resetting

Clearing Data Block


Programming Long Duration Recordings using Macros

Macros Sample

Setting the Sampling Duration Save as no.

Saving the data into a file with a Unique Number Remove data

Clearing the data from the Data Block X times

Repeats Sample, Save as no. and Remove data

Documents

ADInstruments Advanced Features of LabChart Name: