Agilent Technologies 8000 Series Dokumentacja Pobierz pdf (Strona 58)

Chapter 3: Testing Performance

To verify threshold accuracy

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

-5V

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Agilent Technologies 8000 Series Dokumentacja Strona 58