TCP303 and TCP404XL Performance Verification
5-36
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
Rise Time
This procedure measures the rise time of the TC P303 and TCP404XL Probes. In
this test you directly measure the rise time of a step input. Refer to Figure 5--11
when making equipment connections.
High amplitude
pulse generator
Test oscilloscope
Current
probe
TCP303 -- use
HF current loop
50 Ω oscilloscope input -- use the TekProbe
InterfaceCableorusea50Ω cable. (Add
50 Ω termination here if oscilloscope has
only high-impedance input.)
TCP404XL -- use
built --in current loop
on pulse generator
Figure 5- 11: Rise time test setup for the TCP303 and TCP404XL
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 termination at the oscilloscope input. Do not connect the
termination at the amplifier output.
2. Connect the current probe to the amplifier PROBE INPUT connector.
3. If testing a TCP303, connect the HF current loop to the high amplitude pulse
generator.
NOTE. If your oscilloscope cannot trigger on the pulse, use another BNC cable
to connect the trigger output of the pulse generator to the trigger input of the
oscilloscope. Configure the oscilloscope for an external trigger.
Equipment C onnections
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