Tektronix 070-9176-00, Instruction Manual

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Performance Verification
P6467 High-Speed Probe Adapter Instruction Manual
43
4. Adjust the oscilloscope to establish a common reference point for the clock
signal. For example, adjust the display so that the threshold level (50% point
of the signal) is at the center of the display. Move the Horizontal Position
control to move the rising edge of the clock signal 2 ns to the left of the
center graticule.
5. Move the FET probe to one of the data signals of J100 on the P6467 Test
Board (if necessary refer to Table 15 on page 64 for the identification of the
data signals at J100). Note where the data transition occurs with respect to
the reference point of the rising edge of the clock signal.
6. Check that the data signal is at the center of the display (2 ns after the rising
edge of the clock). If not, adjust the lead delay of the selected clock signal on
the HFS 9003 Stimulus System to set the 50% point of the data signal to the
center of the display (2 ns from the clock edge).
7. Repeat step 6 for each data signal.
This completes the test equipment setup.
This check verifies the Clock Threshold Adjustment Range (–1.6 V to +2.6 V).
Perform the following steps to verify the specification:
1. Connect the positive lead of the digital voltmeter to test point THLD on the
probe; connect the negative lead to the ground test point adjacent to THLD
(if necessary refer to Figure 4 on page 6 or to Figure 13 on page 23 for the
test point location).
2. Rotate the threshold adjustment control (THLD ADJ) through the full range
and note the reading on the voltmeter.
3. Check that you can vary the threshold voltage from –1.6 V to +2.6 V.
4. Set the threshold voltage to +2.0 V (
±
10 mV) and disconnect the voltmeter
leads.
This check verifies the Setup & Hold timing for the P6467 Probe and concur-
rently verifies the clock maximum operating frequency, the minimum input
voltage swing, and the input voltage levels. An overview of the check appears at
the end of these instructions. The tests are designed to use one of the flexible
leads of the P6467 Probe at a time.
1. If you have not already done so, refer to Table 9 and enter the setups for the
HFS 9003 Stimulus System.
2. Set the jumpers on the P6467 Probe to the positions listed in Table 11.
Clock Threshold
Adjustment Range Check
Setup & Hold Timing and
Maximum Operating
Frequency Check