Agilent Technologies HP 54601B Guide de l'utilisateur télécharger pdf (Page 69)

Creating a rise time testing mask

Mask template testing can be used to test the rise time of a signal, including

specifying an upper limit for rise time. For example, you can specify that the

rise time must be 15 ns or faster to pass the test.

1 Determine the top and base of the signal.

Use the automatic measurement V top and V base of the oscilloscope to

determine these values.

2 Calculate the 10% and 90% points.

3 Determine the upper limit for the rise time.

4 Draw the mask template using the mask editor.

The mask should look similar to the one in figure 15. Use the voltage and

time read outs of the mask editor to ensure the correct settings. In the figure

15, T1 and T2 are the critical points for determining the maximum rise time

limit (Rise time limit = T2 - T1).

Rise time testing mask

Figure 15

Solutions

Creating a rise time testing mask

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 122 123

Pas de commentaire

Agilent Technologies HP 54601B Guide de l'utilisateur Page 69