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Introduction
The TK-60, TK-100, TK-250 and TK-250/100 are passive high impedance
oscilloscope probes designed and calibrated for use on instruments having
an in-put impedance of 1 MΩ shunted by 20 pF. However, it may be
compensated for use with instruments having an input capacitance of 10-35
pF. The probe incorporates a three position slide switch in the head, which
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selects attenuation of x1, x10 or a ground reference position (not PeakTech
TK-250/100)
Safety instructions
This probe has been designed for use on low energy systems only as defined
in category II of EN 61010-031. The probe should only be used with
oscilloscopes, that have a grounded BNC connector. Do not attempt to make
measurements where the ground lead or oscilloscope input is raised above
ground potential. If differential measurements are required, use a dual
channel scope in the differential mode with two probes or use a differential
probe.
REF-position
The oscilloscope probes TK-60, TK-100 and TK-250 are provided with a
refer-ence-position. The oscilloscope-probe tip is disconnected and the
oscilloscope-input is grounded.
Maintenance
Before dismantling any part of the probe, make sure it is disconnected from
any voltage source. The measurement tip is replaceable. The probe head can
be detached from the cable assembly by unplugging the push fit BNC
connector on the probe head. To replace a broken tip, hold the black
insulating part of the tip with plier and screw it away from the probe head.
Replace with a new tip taking care to align with the inner contact.
Compensation Adjustment
In order to obtain the correct division ratio with each oscilloscope, the
attenuation network needs to be adjusted. To compensate the probe to your
oscilloscope, apply a 1 kHz square wave to the probe tip, or connect to the
cal socket on the oscilloscope to display a few cycles of the waveform and
adjust the trimmer located in the BNC-plug for a flat topped square wave.
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