Keysight Infiniium 8000 Series, Руководство по обслуживанию

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Chapter 3: Testing Performance
To verify threshold accuracy
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least one bit was logic 0 as V2 in Table 4.
Table 4: Threshold Voltage Setting and V2
4
Perform the fine threshold voltage search (to determine the measured threshold
voltage within ±5mV.)
a Repeat the following steps until all displayed bits are logic 1:
• Reset V1 to the initial value shown in Table 3.
• Increase V1 to (V2 + 5mV), and examine the logic display.
• If all bits are logic 1, stop the test and record the value displayed on the DMM
in the Performance Test Record.
• If at least one bit is still logic 0, reset V1 to the initial value shown in Table 3.
• Increase V1 to (V2 + 10mV), then examine the logic display.
• If all bits are 1, then record the value displayed on the DMM in the Performance
Test Record.
• If at least one bit is still 0, reset V1 to the initial value shown in Table 3.
• Repeat these steps, increasing V1 by an additional 5mV for each iteration of the
procedure, until all bits are displayed as logic 1. When all 16 bits have transitioned
to logic 1, record the value displayed on the DMM in the Performance Test Record.
Threshold Voltage Setting V2
+5V
0V
-5V