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Section 4 User Interface
4.1 Keypad and function keys
The user interface of the instrument consists of a display screen, 6 function keys and a set of 4
arrow keys in the center. A green light at the bottom left of the keypad indicates if the instrument
is ON. No light indicates the instrument is OFF. The keypad is touch sensitive and will respond
to each key being pressed. As the key is touched a blue light will be appear underneath to
indicate selection of that key. If a key is selected that is not available or has no meaning during
the current operation, then the key will be displayed above the measurement value with a line
drawn through it.
Note: The keypad can be locked and unlocked pressing the keys RFID, USB and RFID in sequence.
The keys have the following functions:
1. Cancel key 4. Arrow keys
2. USB key 5. Enter key
3. Sample or continuous mode key 6. RFID key
7. Measurement key
• Cancel data input.
• Exit from a menu and display the measurement screen.
Note: This key will be referred to as the Cancel key in this manual.
• Display the main menu.
• Select an option.
• Validate the input and go on to the next step.
Note: This key will be referred to as the Enter key in this manual.
• Import data from a USB mass storage device.
• Export data to a USB mass storage device.
• Card identification system (not yet available).
• When pressed twice in quick succession a screenshot will be taken
(maximum of 10) that can be transferred to a USB key using the Import /
Export option from the Main Menu (see Import / Export on page 35).
• Define if measurements are in sample or continuous mode. Continuous
mode displays the bottle symbol with a cross through it in the top right of
the measurement screen. Sample mode displays the bottle symbol without
the cross.
• When in sample mode use this icon to Start/Stop measurements. When
started the bottle symbol is shown in green. When stopped the symbol is
greyed out and a “Measurement stopped” message displayed.
• Up arrow - Scroll up through a list or menu.
• Down arrow - Scroll down through a list or menu.
• Left arrow - Go back to the previous screen (or data element) in sequence.
• Right arrow - Go to the next screen (or data element) in a sequence.
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