TCP303 and TCP404XL Performance Verification
Bandwidth (TC
P303)
This procedure tests the bandwidth of the TCP303 Current Probe. In this test you
measure a signal at a relatively low frequency and again at the rated b andwidth of
the probe. Th
e two measurements are compared to verify that the signal amplitude
does not fall below -3 dB at the probe bandwidth. The equipment connections are
shown below. (See Figure 12.)
Figure 12: Bandwidth test setup for TCP303
Equipment Connections
1. If you are using a Tektronix oscilloscope that supports the TekProbe Level 2
Interface, use the TekProbe Interface Cable to connect the amplifier OUTPUT
to the oscilloscope input. If you are not using a Tektronix oscilloscope that
supports the TekProbe Level 2 Interface, use a 50 Ω BNC cable. If the
input impedance of your oscilloscope is 1 MΩ, connect a 50 Ω feedthrough
ter
mination at the oscilloscope input. Do not connect the termination at the
amplifier output.
2. Co
nnect the current probe to the amplifier PROBE INPUT.
3. Connect the HF current loop to the output of the leveled sine wave generator.
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Service Manual 39