TCPA300 and TCPA400 Performance Verification
4. Connect the Cal
ibration Adapter to the output of the leveled sine wave
generator.
5. Enable the out
put of the leveled sinewave generator.
6. Verify the amplifier output is what is listed for the TCPA300 amplifier.
(See Table 7 on page 12.) The TCPA400 amplifier output is also listed. (See
Table 8 on page 12.)
7. Using the peak-peak measurement capability of the oscilloscope, measure and
record the peak-peak reading as M
1
.(SeeTable7onpage12.) (SeeTable8
on page 12.)
8. If you are checking a TCPA300 perform the following steps. Each range
setting a
nd bandwidth filter is available. (See Table 8 on page 12.)
The range setting and bandwidth filter is listed for the TCPA400. (See Table 7
on page 1
2
.
)
a. Set the oscilloscope time base to 4 or 5 ns /division. Increase the signal
genera
tor frequency to 50 or 100 MHz, d epending on the range setting
and bandwidth.
b. When y
ou check the 100 MHz frequency, press either MANUAL
BALANCE button until the orange MANUAL BALANCE LED lights.
This engages a higher-frequency filter in the amplifier. After you check
the bandwidth at 100 MHz, press either MANUAL BALANCE button
againtoturnoffthefilter (the LED goes off.)
c. Using the peak-peak measurement capability of the oscilloscope, measure
and record the peak-peak reading as M
2
.(SeeTable7onpage12.)(See
Table 8 on page 12.)
9. The system meets the bandwidth specification if the ratio of the signal
amplitude at the warranted bandwidth is at least 70% of the signal amplitude
a
t 3 MHz. Using the following calculation, verify system bandwidth:
10. Verify that the calculated system bandwidth is within the limits specified
for all settings in the test record. (See page 17, TCPA300 Amplifier Test
Record.) (See page 18, TCPA400 Test Record.) Record the calculated system
bandwidth in the test record.
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Service Manual 11
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