Manual

Getting Started
The TCPA300 and TCPA400 current probe am plifiers let you use one probe to
simultaneously measure AC and DC current. The amplifiers convert the sensed
current into
a p roportional voltage signal that you can measure directly with an
oscilloscope.
The TCPA300
and TCPA400 current probe amplifiers provide better linearity
than other current measurement systems because of a current feedback process
used with the probe. DC measurement capability and high bandwidth allow the
amplifiers to accurately represent square waves and fast-rise signals.
The TCPA300 and TCPA400 and associated probes provide these features:
Simultaneous DC and AC current measurements up to 750 A peak
High sen
sitivity
One-button a utobalancing and probe degaussing
No adjustments needed to match a current probe to an individual amplifier
AC or DC coupling of signal
Direct scaling and unit readout on compatible TEKPROBE level II
oscilloscopes
System Configuration
A complete current measurement system c onsists of a current probe amplifier, a
compatible current probe, and an appropriate oscilloscope. (See Figure 1.)
Figure 1: Typical TCPA300/400 current measurement system
1. 50 Ω oscilloscope input — use the TEKPROBE Interface Cable or use a
50 Ω cable. (Add a 50 Ω termination here if the oscilloscope only has a
high-impedance input).
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes User Manual 1