Agilent Technologies Weather Radio 1680 Manuel d'utilisateur télécharger pdf (Page 52)

Chapter 3: Testing Performance

To test the multiple-clock state acquisition

b On the oscilloscope, select [Shift] + width: channel 1, then select

[Enter] to display the data signal pulse width (+ width (1)).

c If the pulse width is outside the limits, adjust the pulse generator

channel 2 width until the pulse width is within limits.

Check the setup/hold with single clock edges, multiple

clocks

The following setup/hold combinations will be tested.

Setup/Hold Combinations

1 Disable the pulse generator channel 1 COMP (LED off).

2 Using the Delay mode of the pulse generator channel 1, position the pulses

according to the setup time of the setup/hold combination selected,

+0.0 ps or −100 ps as measured on the oscilloscope:

a On the Oscilloscope, select [Define meas] Define ∆ Time - Stop edge:

rising, Edge number 2.

Te s t

Combination

Setup/Hold

Times

Setup/Hold

Window

Sample Position

(in middle of Window)

1 5.0/-2.0 ns 3.0 ns -3.5 ns

2 -1.5/4.50 ns 3.0 ns +3.0 ns

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 173 174

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Agilent Technologies Weather Radio 1680 Manuel d'utilisateur Page 52