2c - v1.0 FACTORY CALIBRATION

Overview

Description

Do not recalibrate you device unless you know what you're doing! If you have questions or concerns about your device, please ask on the forums

This calibration includes:

  1. Calibrate ambient PAR using the Light Box

Directions

Before beginning the MultispeQ ambient PAR calibration, complete the following:

  1. Ensure that the project 0 - v1.0 LIGHT BOX CALIBRATION is completed.
  2. Windows Computers: You will need two computers to complete this calibration process. Connect the Light Box device to the Desktop App on one computer (microUSB to USB). Run the protocol "v1.0 CALIBRATION: MultispeQ PAR to LiCOR PAR (lights)". The device will then run the light sequence for calibrating ambient PAR when prompted via the USB-C cable. Leave the computer plugged into the light box and leave the protocol running while calibrating MultispeQ devices. Use the second computer to complete the steps below.
  3. LINUX or Apple Computers: Connect the Light Box to the Desktop App and run the protocol "v1.0 CALIBRATION: MultispeQ PAR to LiCOR PAR (lights)". Once the protocol has started, cancel the measurement (but leave the USB cable connected to the computer), and then use the same computer to complete the steps below.

Once that is complete, you can calibrate many devices using the following directions:

  1. Connect the white USB-C cable to the device to be calibrated (make sure the end ports are facing up, orientation matters).
  2. Connect the device to be calibrated to the Desktop App.
  3. Now slide the MultispeQ being calibrated into the light chamber. The device should be on top of the plastic piece provided. The front dowel pin should rest inside the grove on the bottom lip of the box. The device should be stabilized in place before moving on to the next step.
  4. Press enter. More lights should flash in the chamber.

Once complete, evaluate the quality of the results for each measurement (there are several so scroll down to see them all. If there are danger or warning messages read and retry the calibration. R2 values should be .98 or higher Then...

  1. Hit the "save to Device" button. Then submit the data to the website.

Protocols

v1.0 CALIBRATION: MultispeQ PAR to LiCOR PAR (1)

Description

This is a 3 part protocol, and is designed for all 3 to be run in order in the Desktop App.

The MultispeQ measures ambient PAR (Photosynthetically Active Radiation, which is light in the 400nm (deep visible blue) to 700nm (deep visible red) range. While the MultispeQ uses some optical filtration, it is still necessary to calibrate each device against a known PAR sensor to ensure comparability and consistency across devices. We choose to use the LiCOR 190R Quantum Sensor to calibrate against as a long term and well respected PAR sensor.

A light box with 5 LEDs (red, green, blue, orange, and 940nm) is set up with a location to place the MultispeQ or LiCOR PAR sensor. The MultispeQ is then connected to the light box via the USB-C port. This protocol can initiate the light box sequence by sending a digital HIGH/LOW/HIGH signal over USB-C. Once initiated, the light box and the MultispeQ progress through 6 different light regimes (even light, full sun, cloudy day, fluorescent lighting, under a dense canopy, and white LED). While these regimes are not exactly like their namesake (there's no full sun in the box :) ) the combination of LEDs attempts to mimic the spectra of each of these conditions. So - for each light regime, 4 different intensities are measured, resulting in 24 separate measurements (6 regimes x 4 intensities).

Once the LiCOR and MultispeQ data have been collected for the 24 light conditions, they are fed into a model (multiple linea...

v1.0 CALIBRATION: MultispeQ PAR to LiCOR PAR (2)

Description

See "v1.0 CALIBRATION: MultispeQ PAR to LiCOR PAR (1)" for full description and directions

v1.0 CALIBRATION: MultispeQ PAR to LiCOR PAR (3)

Description

See "v1.0 CALIBRATION: MultispeQ PAR to LiCOR PAR (1)" for full description and directions

Questions

  1. Device ID (Short Answer)
  2. iteration (Short Answer)

Locations

Discussions

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By MDotz, 6 months ago
1 comment

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