Force-A DUALEX SCIENTIFIC+ User manual

DUALEX SCIENTIFIC+TM

USER’S MANUAL

Fluorescence and

Optoelectronics

Research for the

Communication between

Ecophysiology

and

Agriculture

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

Table of content

I DUALEX SCIENTIFIC+™ OPTICAL LEAF-CLIP........................................................................................1

I.1. DESCRIPTION ..................................................................................................................................................1

I.2. DUALEX SCIENTIFIC+™ TRANSPORT CASE ..............................................................................................2

II GETTING STARTED ...........................................................................................................................................3

II.1. CHARGING THE DUALEX SCIENTIFIC+™..................................................................................................3

II.2. SWITCHING ON THE DUALEX SCIENTIFIC+™............................................................................................3

II.3. MAIN MENU ....................................................................................................................................................3

II.4. SUB MENU ‘MEASUREMENT’...........................................................................................................................4

II.4.a. Calibration ................................................................................................................................................4

II.4.b. Measurement .............................................................................................................................................4

II.4.c. How to delete a measurement....................................................................................................................6

II.4.d. Power alarm ..............................................................................................................................................7

II.4.e. Management of the memory ......................................................................................................................7

II.5. SUBMENU ‘USB’ ............................................................................................................................................8

II.5.a. Connection ................................................................................................................................................8

II.5.b. DUALEX SCIENTIFIC+™ update ...........................................................................................................9

II.6. SUBMENU ‘SETTINGS’...................................................................................................................................12

II.6.a. GPS .........................................................................................................................................................12

II.6.b. Format.....................................................................................................................................................13

II.6.c. Measurement ...........................................................................................................................................14

II.6.d. Date & Time ............................................................................................................................................15

II.6.e. Contrast...................................................................................................................................................15

II.6.f. Standby....................................................................................................................................................15

II.6.g. Languages ...............................................................................................................................................16

II.6.h. About .......................................................................................................................................................16

III DATA FILE ..........................................................................................................................................................17

IV DUALEX SCIENTIFIC+™ TECHNICAL SPECIFICATIONS....................................................................18

VPRECAUTIONS OF USES.................................................................................................................................19

V.1. ENVIRONMENT OF USE ..................................................................................................................................19

V.2. SHOCKS AND VIBRATIONS .............................................................................................................................19

V. 3. STORAGE ......................................................................................................................................................19

V.4. CLEANING.....................................................................................................................................................19

V.5. EXCHANGE OF BATTERIES .............................................................................................................................19

VI CONDITIONS OF GUARANTEE.....................................................................................................................20

VII FAQ ..................................................................................................................................................................21

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

I DUALEX SCIENTIFIC+™ optical leaf-clip

I.1. Description

1) Handle to open the clip: when pressing on this handle, the clip opens and the leaf can be

introduced between the 2 heads. When released, the heads hold the leaf allowing the measurement

to be done. The testing position of the DUALEX® is with the clip closed.

2) The head that contains 5 different LEDs: 1 UV-A emitting LED, 2 visible-emitting LEDs and

two NIR-emitting LEDs.

3) The head that contains the optical detector: a filtered PIN photodiode.

4) Keyboard.

5) LCD Screen.

6) USB Interface that allows to download data, to upgrade the software and to charge the

DUALEX SCIENTIFIC+™ unit.

7) The wrist-strap must be tied to the DUALEX SCIENTIFIC+™ unit in order to avoid the fall of

the device.

2) Light source

5) LCD screen

3) Light detector

6) USB interface

4) Keyboard

7) Attach wrist-strap

1) Opening handle

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

The 5 buttons on the keyboard are used to navigate through the software. The buttons are

multitask, and every action depends on the state of the tool.

The button is used to switch on the DUALEX SCIENTIFIC+™ with a long press. This button

is also used to switch off the DUALEX SCIENTIFIC+™: one press in the main menu, or a long

press at any time.

The button is used to enter a selection in a sub-menu, to validate a selection or to make a

measurement.

The button is used to cancel an action or a selection, and allow the suppression of the last

measurement; in this case the software will come back to the previous state. A long press turns

back to the main menu.

 Buttons and are used to navigate in the menus, to increase the group rank and to

change the side tag.

I.2. DUALEX SCIENTIFIC+™ transport case

The DUALEX SCIENTIFIC+™ is delivered in a shock resistant case. It contains the Dualex

Scientific leaf-clip, a USB cable with a USB wall plug adapter and this user’s manual.

The DUALEX SCIENTIFIC+™ is powered by an internal rechargeable Li-Po battery. The battery

can be charged using the USB cable directly from the computer, or using the wall plug adapter

(110-220/50-60Hz).

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

II Getting Started

Unpack the DUALEX SCIENTIFIC+™ and check that there is no evident damage.

The DUALEX SCIENTIFIC+™ is charged before delivery, however depending on storage time,

the battery can be discharged.

II.1. Charging the DUALEX SCIENTIFIC+™

To charge the DUALEX SCIENTIFIC+™, connect the USB cable to either:

-the wall plug adapter cable and plug it in a regular power supply (check that voltage (110-

220V) and frequency (50-60 Hz) are compatible)

-a USB port on a computer.

While connected, a charge indicator will appear on the screen:

The DUALEX SCIENTIFIC+™ unit can be operated when the battery is under charge.

The full charge of the battery will be completed after 4 hours.

With a full charge, operating time is nearly 7 hours in continuous use.

II.2. Switching on the DUALEX SCIENTIFIC+™

To switch on the DUALEX SCIENTIFIC+™, press a ‘long push’ on the keyboard.

A screen with FORCE-A image will quickly appear.

Then the main menu will be displayed.

II.3. Main menu

The main menu includes 3 sub-menus:

1. Measurement: allows measurements.

2. USB: allows to download the recorded data and to update the device software from a

computer.

3. Settings: give access to the different menu configurations like the GPS, Format, Measure,

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

Date & hours, Contrast, Stand-by mode, Language and About.

The navigation among the menus is made by using buttons up and down on the

keyboard.

The selected sub-menu is marked by (> <). Use the button to select the sub-menu.

II.4. Sub menu ‘measurement’

To initialize a measurement sequence, select the sub-menu ‘Measurement’ and press button.

II.4.a. Calibration

When the measurement sub-menu is selected and before any measurement, the DUALEX

SCIENTIFIC+™ unit will ask for a short self-calibration. The following screen will appear:

Be careful during calibration process that there is nothing between the optical heads and that the

clip is well closed.

To start self-calibration, press on the button .

Warning: You can face three potential problems during the calibration:

- The clip is opened: close it and press on the button .

- There is a leaf between both heads: remove it and press on the button .

- Heads are dirty, clean them and press on the button .

II.4.b. Measurement

Once calibration succeeded, the DUALEX SCIENTIFIC+™ unit is ready to measure and displays

the following screen:

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

(Depending on the version of your DUALEX ®, Anth index is calculated or not)

To make a measurement, open the clip by pressing the handle and place a leaf between the optical

heads.

Release the handle, the measurement is automatically made. When a measure is taken, two types of

beep can ring:

- A long beep which means that the measurement is well done and recorded.

- Three short beeps which mean that the measurement is wrong and not recorded.

If the reading succeeds, the indices values appear on the screen:

► NBI: or Nitrogen Balance Index. This index is the ratio between Chl and Flav.

The range of this index is 0 - 999. If the measured value is outside these limits, the value displayed

on the screen is ***. This state is recorded in the memory of the device under the tag “NaN”. If the

measurement is inconsistent, the displayed tag is: ___

► Chl: chlorophyll content.

The range of this index is 0-150. If the measured value is outside these limits, the displayed value

on the screen is: ***. This state is recorded in the memory of the device under the tag “NaN”. If

the measurement is inconsistent, the displayed tag is: ___

► Flv: index of phenolics, mostly flavonols, content.

The range of this index is 0-3. If the measured value is outside these limits, the displayed value on

the screen is: ***. This state is recorded in the memory of the device under the tag “NaN”. If the

measurement is inconsistent, the displayed tag is: ___

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

► Anth: index of phenolics, anthocyanins content.

The range of this index is 0-3. If the measured value is outside these limits, the displayed value on

the screen is: ***. This state is recorded in the memory of the device under the tag “NaN”. If the

measurement is inconsistent, the displayed tag is: ___

► grp: indicates the group rank. The measurements can be grouped into a set of measurements

statistically connected. Press on (group+) to increment the number of group. The statistical

results of the latest group are then displayed.

If the data are not valid, the statistical results appear under the tag ***. To return to the measure

menu, press on .

► mes: corresponds to the rank number of the measurement performed in the group. This value

increases automatically with every measurement.

► sup / inf: the side of the leaf, adaxial or abaxial, and its associated epidermis – that is

positioned against the light source head (upper head) – will be measured. To measure the opposite

side of the leaf, you may flip over the leaf or invert the position of the Dualex heads.

You can add the leaf side tag which will be associated to the next measurement: adaxial (sup) or

abaxial (inf). To change this tag, just press on . This information is stored with the

measurement.

Warning: there is no limitation to the measurements rank in a group. The capacity of the internal

flash memory (1.8Mo) allows more than 10 000 measurements. Nevertheless, it’s recommended to

transfer the data by the command >USB< onto a computer after every campaign of measurements.

After the transfer of the data file, you can erase it from the flash memory using your computer.

II.4.c. How to delete a measurement

The last made measurement can be deleted by pressing the button (short press), the screen asks

for confirmation. Press on the button (No) or (Yes):

A long press on the button leads to the main menu and saves the measurement.

DUALEX SCIENTIFIC+TM

FORCE-AUser’s manual v.3.1

II.4.d. Power alarm

In order to avoid a loss of data, a double alarm informs you about the level of the battery.

The first alarm informs you that there is only 20% of the battery power left « Low battery ». You

can continue your measurements for some time (approximately 1 hour).

The second alarm informs that there is only 10% of the battery power left « Empty battery ». To

avoid a loss of data, the device automatically shuts down. Measurements are not possible any

more.

II.4.e. Memory management

The DUALEX SCIENTIFIC+™ manages the capacity of the memory and displays two safety

messages to ask to empty the memory card:

- « memory almost full » between 200 kB and 2 kB free memory left

- « Memory full » with less than 2 kB free memory left (less than 15 measurements).

► If you switch on the DUALEX SCIENTIFIC+™, when only between 200 kB and 2 kB free

memory is available, the following message is displayed:

Press on the button . Download the memory content to a computer. If you go to the submenu

‘measurement’, the message will be displayed a second time.

► When DUALEX SCIENTIFIC+™ is switched on, if less than 2 kB of free memory remains,

the following message is displayed:

Table of contents

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