User Manual

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9. Overrange Indicator
The overrange indicator lights red, if the voltage of the input signal exceeds the linear
operating range of the probe. When this happens, the signal on the probe output does not
accurately represent the signal on the probe input.
10. Inspection Procedure
a. Connect the BNC output connector to the vertical input of a general purposed
oscilloscope.
b. Install four AA cells or connect an appropriate mains adaptor or power lead to the correct
line voltage.
c. Set the oscilloscope input to DC coupling and 1V/div. Center the trace on the display.
d. Connect the input leads of the probe to power lines.
e. Set the range of the probe to 1/1000.
f. Then, a 50Hz/60Hz sine-wave of proper amplitude will be displayed on the screen of the
oscilloscope and this means this probe is working properly.
11. Cleaning
Use a soft cloth to clean the dirt. Prevent damage to probe.
a. Avoid immersing the probe.
b. Avoid using abrasive cleaners.
c. Avoid using chemicals contains benzene or similar solvents.
Lemo® and Probus® are registered trademarks.
Date: June 20,2005
TESTEC Elektronik GmbH
Westerbachstr. 58
60489 Frankfurt / Germany
Tel.: [phone]
Fax: [phone]
website: www.testec.de
e-mail: [e-mail]