Tektronix TCP300A, User Manual

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Getting Started
Operating the Current Probe Slide
The current probes each have a slide mechanism that opens and closes the probe
jaw. This allows you to clamp the probe around a conductor under test. The slide
must be locked closed to accurately measure current or to degauss the probe. If a
probe is unlocked, the PROBE OPEN indicator on the ampli
fi er will light.
The current probes can be used to measure current on uninsulated wires. However,
the circuit must be de-energized when connecting or removing the current probe.
The slide operation of the TCP305A and TCP312A current probes is shown in
the following illustration. (See Figure 6.) To open the probe, pull the slide back
until the jaw is open. To lock the probe, push the slide forward until the detent
snaps into place.
Figure 6: TCP312A and TCP305A slide operation
10 TCPA300/400 Ampli fi ers and TCP300A/400 Series Current Probes User Manual