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Fluke 434/435
Users Manual
22-4
Screen remains black.
Make shure that the Analyzer is on: at power-on you should hear a double beep. If the
screen remains black, you might have a problem with the screen contrast. Proceed as
follows to change Contrast:
• Press the SETUP key.
• Press Function key F4.
• Press the left or right arrow key for five seconds to return to normal display.
Operation time of fully charged battery is too short.
The Battery may be in poor condition. This may improve after a full discharge and full
charge cycle as explained in section ‘Keeping the battery in good condition’ in this
Chapter.
Printer does not print.
• Make shure that the optical interface cable is properly connected between Analyzer
and printer.
• Make sure that you have selected the correct printer type and printer baudrate. How
to proceed is explained in Chapter 21.
• If you are using the PAC91 (Print Adapter Cable), make sure that it is turned on and
that a fresh battery is installed.
FlukeView does not recognize the Analyzer.
• Make sure that the Analyzer is turned on.
• Make shure that the optical interface cable is properly connected between Analyzer
and PC.
Other PC software does not recognize the Analyzer.
• Make sure that the Analyzer is turned on.
• Make shure that the optical interface cable is properly connected between Analyzer
and PC.
• Make sure that the correct COM port has been selected for the PC. If not, change the
COM port setting or connect the interface cable to another COM port.
• Make sure that baudrate of Analyzer and PC are the same. How to proceed is
explained in Chapter 21.