Tektronix TCP303 Safety Instructions

Operate the current probe
Use the ground lead
The TCP305A and TCP312A probes include a 6-inch ground lead. The ground
lead grounds the shield around the probe transformer at the probe end of the
cable. This allows you to move the ground connection closer to the circuit you are
measuring, thereby improving high frequency shielding. The ground lead clips
onto the gro
und connector on the bottom of the probe.
Figure 4: Connecting the ground lead
The ground lead on the current probes is intended to be used in high dV/dt
envir
onments. The probes have a grounded shield between the conductor under
test and the current sense transformer. Any capacitively-coupled current will then
flow in the ground instead of the transformer windings.
When you take high frequency measurements, connect the probe ground lead to
the probe ground connector and attach the alligator clip directly to RF ground to
improve EMI rejection at high frequencies (2 MHz and above). This will reduce
ringing and help bypass capacitively-coupled RF currents which can flow into
the probe cable. In some cases, it may b e helpful to move the ground lead or
re
position the probe away from noise sources in the circuit under test.
Amplifiers a nd Current Probes Compliance and Safety Instructions 25

Tektronix TCP303 Specifications

General

Brand	Tektronix
Model	TCP303
Category	Amplifier
Language	English