Check TekProtect. This procedure is only for MSO/DPO70000C instruments that
have TekProtect installed. TekProtect provides protection from electrical
overstress (EOS) and electrostatic discharge (ESD) on the four analog input
channels.
Equipment required Prerequisites
Source Measure Unit (Item 34)
Adapter, TCA-BNC (Item 19)
Adapter, BNC to minigrabber (Item 18)
Instrument controller (Item 35)
(See Prerequisites on page 116.)
Figure 25: TekProtect initial test hookup
1. Install the test hookup and preset the instrument controls:
a. Initialize the instrument: Press the Default Setup button.
b. Using the instrument controller, send the INSPECT command to the
oscilloscope. Do not make additional settings changes to the instrument
until asked to in Step 9.
c. Hook up the test-signal source: Connect the Source Measure Unit to the
CH 1 input of the oscilloscope using the SMU test leads and the two
adapters. Connect the SMU High Sense to the center conductor. Connect
the SMU Low Sense to the ground (outer) conductor.
2. Set the Source Measure Unit to output +2.0 V. Verify that the measured
current is less than +100 μA. Enter the value in the test record.
3. Set the Source Measure Unit to output –2.0 V. Verify that the measured
current is less than –100 μA. Enter the value in the test record.
4. Set the Source Measure Unit to output +65 mA, with the overvoltage limit set
to +3.5 V. Verify that the measured voltage is ≤3.42 V. Enter the value in the
test record.
5. Set the Source Measure Unit to output –65 mA, with the overvoltage limit set
to –3.5 V. Verify that the measured voltage is ≥–3.42 V. Enter the value in
the test record.
6. Move the test setup to an unchecked input channel.
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
240 MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
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