Tektronix TDP3500, Техническое описание

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Performance Veri fi cation
Differential Signal Range
This procedure veri fi es the differential signal range of the probe. This procedure uses the setup from the previous test.
Veri fi cation
1. Set the vertical offset to 0 V.
2. Set the input voltage on the DC source to 0 V, and verify that it is 0 V with the multimeter. (See Figure 10.)
3. Measure the probe output voltage as V
offset
. You will use this offset voltage to get more accurate results in the calculations
below.
Figure 10: Differential signal range test
4. Set the input voltage on the DC source to 2 V ±100 mV, and record the actual voltage as V
in
.
5. Measure and record the output voltage as V
out
.
6. Calculate attenuation as |V
in
÷ (V
out
– V
offset
)|.
7. Verify that the attenuation is in the range of 4.75 to 5.25. Record the results in the test record.
8. Reverse the polarity of the input voltage for the following measurements. (Swap the MicroCKT test tips or the Y-lead
adapter.)
9. Measure and record the output voltage as V
out
.
10. Calculate attenuation using the formula in step 6.
11. Verify that the attenuation is in the range of 4.75 to 5.25. Record the results in the test record.
Disconnect the probe from the test setup and connect it to any oscilloscope channel to keep the probe at operating
temperature.
TDP3500 Technical Reference 17