Bio-Rad VersaFluor™ Fluorometer - Manual (Page 8)

The first three screens are part of the instrument initialization and the fourth screen is the
main menu display. The VersaFluor Fluorometer instrument must warm-up for 20 minutes
prior to use. Measurements read prior to the warm-up time may cause irreproducible fluo-
rescence readings.
3.3 Adjusting the LCD Contrast
The menu display LCD is factory adjusted for normal viewing. To change the contrast of
the menu display, locate the adjusting screw accessible from the back of the instrument
(Section 2.2). Inside the round hole above the label “LCD CONTRAST ADJUST” is the
adjusting potentiometer. Insert a small flat-bladed screwdriver into the round hole and care-
fully turn the adjusting screw to increase or decrease the menu display contrast.
3.4 Setting Up the VersaFluor Thermal Printer
The VersaFluor Thermal Printer, Model DPU-414 is ready for use with the VersaFluor
Fluorometer. The procedure for setting up the printer for the first time is described below.
Please refer to the Thermal Printer manual for more information.
Thermal Printer
1. Turn off the printer power.
2. Insert the DC plug on the AC adaptor into the power supply jack on the printer.
3. Plug the AC adaptor into an outlet.
4. Attach the serial cable adaptor to the serial cable.
5. Connect the 9-pin end of the serial cable to the serial port located on the back printer.
Connect the 25-pin end of the serial cable to the serial port located on the back of the
VersaFluor Fluorometer.
6. Load the thermal paper into the printer (Refer to the Printer manual).
7. The printer DIP switches must be set in the printer so that the VersaFluor Fluorometer can
communicate with the printer. Slide the power switch to ON while pressing the ONLINE
button. Release the ONLINE button and a list of the current settings will be printed.
8. The print out of the current settings is followed by the prompt:
"Continue? : Push On-line SW"
"Write? : Push paper feed SW"
Push the ONLINE button to continue.
9. Dip SW1 is printed, prompting the input of new settings for switch numbers 1–SW1. ON
can be set by pushing the ONLINE button once. OFF can be set by pushing the FEED but-
ton once.
Note: Always input either ON or OFF for every setting in order for switch number 1
through 8 because DIP SW Set Mode can not be canceled once it is initiated.
The setting is printed after the ONLINE or FEED button is pushed, confirming the new
setting. As soon as switch number 8 is set, the printer will prompt with "Continue?" or
"Write?" and steps 8 and 9 are repeated for DIP SW2 and DIP SW3. When switch
number 8 of DIP SW3 is set, the printer writes the settings to memory regardless of which
button is pushed.
Caution: Never turn the printer off while it is writing the new settings to memory.
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