Bio-Rad BioLogic QuadTec™ Detector and Components - Manual (Page 28)

4.0 STAND-ALONE MODE
Turn on power to the QuadTec detector and wait while it completes its self test. If successful, the lamp will
warm to a constant working temperature. During warm up, the display shows HEA in the lower left position.
The initialization routine is completed by an automatic calibration procedure, and the device is ready for
operation when ON is shown in the lower left position.
4.1 SYSTEM OPERATION IN STAND-ALONE MODE
4.1.1 Using the QuadTec Faceplate Keys
To change any operating parameter, use the following:
• Arrow keys: The green, arrow-shaped keys are used for moving and positioning the cursor in the
display and for confirming an entered value.
• Numeric keys: The blue, numeric keys 1 to 0 are used for entering numeric values at the position
of the cursor.
• Auto zero key: When pressed for less than 2 seconds, this key performs an auto-zero over the
whole wavelength range. Pressing longer than two seconds starts a scan auto zero.
• Scan key: The yellow colored SCAN key switches to the SCAN menu. After switching to this menu,
pressing the SCAN button again triggers a scan over the chosen wavelength range.
4.1.2 Changing Operating Parameters
To change any operating parameter value (e.g., wavelength):
1. Using the green arrow keys, move the blinking cursor to the desired position on the display.
2. Use the numeric keys to enter or change values.
3. Once the desired value has been entered, press any arrow key to confirm.
Input is disabled automatically if a time limit of 60 seconds is reached without pressing any key, and the
main menu is displayed.
Note: If the screen display does not change in response to a key press, repeat press and momentarily hold
the key.
4.1.3 Accessing Menus
Using the arrow keys on the keypad, the blinking cursor can be moved to any position on the menu. If the
cursor has reached an exterior position in the menu (e.g., ON in the lower left corner of the main menu),
pressing and momentarily holding the green arrow key will display the VIEW MENU.
Menus consisting of several pages are indicated by a rhombus ( ◆) in the lower left corner of the display. To
access these pages, place the cursor on this rhombus and press the green Up/Down arrow keys.
In certain menus, the keys 0, 1, and 2 are used to HOLD (0) a defined program, or to RUN (1), or to
INSERT (2) event steps, e.g. to program the event pulse.
USE AS A STAND-ALONE SYSTEM SYSTEM INSTALLATION AND SETUP
4-1