ADInstruments Advanced Features of LabChart Name:

Overview Channel Calculations (Arithmetic, Derivative … ) Cyclic Measurements Data Pad Macros Examples

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 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 Recording Command menu Find: Select Go, Start of this block, Set active point, Find Repeat While In Block Find: Select Find Data, Next Arrow, Local Maxima, Single point Selection, Find Add to Data Pad 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) Data Block (Max Size = 1 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 Example 1 DB Example 2 DB (Max = 1 GB) Continuous Recording DB = Data Block

Sampling and Saving Sampling Saving 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 Clearing Data Block Resetting Saving Raw Data Sampling Data Block Temp File New Unique File File01.adicht File02.adicht File03.adicht

Programming Long Duration Recordings using 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