labjack-profile.js

var now = require('performance-now')

//Require LabJack-nodejs 
var ljn = require('labjack-nodejs');
 
//Device object (to control a LabJack device)c 
var createDeviceObject = ljn.getDevice();
 
//Device object (to control a LabJack device) 
var device = new createDeviceObject();
 
// Open a device 
device.openSync();

/////////////////////////////////////////////////////
// Read an digital input 
var time = now()
var val = device.readSync('DIO0')
var diff = now()-time
console.log('read DIO0:', val);
console.log(' ' + diff.toFixed(3) + ' ms')

/////////////////////////////////////////////////////
// Read an analog input 
var time = now()
var val = device.readSync('AIN0')
var diff = now()-time
console.log('read AIN0:', val);
console.log(' ' + diff.toFixed(3) + ' ms')

/////////////////////////////////////////////////////
// Read two digital inputs and two analog inputs
var time = now()
var val = device.readManySync(['DIO0', 'DIO1', 'AIN0', 'AIN1'])
var diff = now()-time
console.log('read DIO0:', val[0], 'DIO1:', val[0], 'AIN0:', val[2], 'AIN1:', val[3]);
console.log(' ' + diff.toFixed(3) + ' ms')

/////////////////////////////////////////////////////
// Write a digital input 
var time = now()
var errRes = device.writeSync('DAC0', 1.0);
var diff = now()-time
console.log('write DAC0:', 1.0);
console.log(' ' + diff.toFixed(3) + ' ms')

/////////////////////////////////////////////////////
// Write a digital output 
var time = now()
var errRes = device.writeSync('DIO0', 1);
var diff = now()-time
console.log('write DIO0:', 1.0);
console.log(' ' + diff.toFixed(3) + ' ms')

/////////////////////////////////////////////////////
// Write two digital outputs and two analog outputs 
var time = now()
var errRes = device.writeManySync(['DIO0', 'DIO1', 'DAC0', 'DAC1'], [1, 1, 1.0, 1.0])
var diff = now()-time
console.log('write DIO0:', 1, 'DIO1:', 1, 'DAC0:', 1.0, 'DAC1:', 1.0);
console.log(' ' + diff.toFixed(3) + ' ms')

/////////////////////////////////////////////////////
// Read and write one digital and analog input and output each 
var time = now()
var val = device.rwManySync(['DIO0', 'DIO1', 'AIN0', 'DAC1'], [0, 1, 0, 1],[1, 1, 1, 1], [null, 1, null, 1.0])
var diff = now()-time
console.log('read & write DIO0:', val[0], 'DIO1:', 1, 'AIN0:', val[1], 'DAC1:', 1.0);
console.log(' ' + diff.toFixed(3) + ' ms')

// Close the device 
device.closeSync();

Timing measurements for DIO and ADC / DAC for the T7 pro from LabJack using https://www.npmjs.com/package/labjack-nodejs. All communication done over USB

$ node labjack-timing.js
read DIO0: 1
 1.423 ms
read AIN0: 10.122373580932617
 4.365 ms
read DIO0: 1 DIO1: 1 AIN0: 10.122373580932617 AIN1: 8.632431030273438
 10.048 ms
write DAC0: 1
 2.608 ms
write DIO0: 1
 1.146 ms
write DIO0: 1 DIO1: 1 DAC0: 1 DAC1: 1
 2.084 ms
read & write DIO0: 1 DIO1: 1 AIN0: 7.907456874847412 DAC1: 1
 6.109 ms

More information on expected communication rates can be found here https://labjack.com/support/datasheets/t7/appendix-a-1

Inside Kipling software, change analog input resolution index to 1 (at gain/range value or 1/±10V, for a 316uV effective resolution over the whole range) and make settling time 10us to get the analog read time down to 800us for one channel.

$ node labjack-timing.js
read DIO0: 1
 1.451 ms
read DIO0: 1 DIO1: 1 DIO2: 1 DIO3: 1
 1.914 ms
read AIN0: -10.588912010192871
 0.811 ms
read DIO0: 1 DIO1: 1 AIN0: -10.589227676391602 AIN1: -10.588912010192871
 1.721 ms
write DAC0: 1
 1.561 ms
write DIO0: 1
 0.920 ms
write DIO0: 1 DIO1: 1 DIO2: 1 DIO3: 1
 1.845 ms
write DIO0: 1 DIO1: 1 DAC0: 1 DAC1: 1
 1.454 ms
read & write DIO0: 1 DIO1: 1 AIN0: -10.588912010192871 DAC1: 1
 2.301 ms