Agilent Technologies 1664A, Service Manual

Page: 49 / 164

c
Press the Trigger key. Make sure pattern term
a
is "A". If not, select the field next to
"a" under the label Lab1. Type "A", then press the Select key.
Verify the test signal
1
Check the clock pulse width. Using the oscilloscope, verify that the clock pulse
width is 3.50 ns, +0 ps or
−
100 ps.
a Enable the pulse generator channel 1 and channel 2 outputs.
b In the oscilloscope Timebase menu, select Delay. Using the oscilloscope knob,
position the clock waveform so that the waveform is centered on the screen.
c In the oscilloscope Delta V menu, set the Marker 1 Position to Chan 2, then set
Marker 1 at
−
1.3000 V. Set Marker 2 Position to Chan 2, then set Marker 2 at
−
1.3000 V.
d In the oscilloscope Delta T menu, select Start On Pos Edge 1. Select Stop on Neg
Edge 1.
e If the pulse width is outside the limits, adjust the pulse generator channel 2 width and
select the oscilloscope Precision Edge Find until the pulse width is within limits.
2
Check the clock period. Using the oscilloscope, verify that the clock period is 20 ns,
+0 ps or
−
250 ps.
a In the oscilloscope Timebase menu, select Sweep Speed 4.00 ns/div.
b Select Delay. Using the oscilloscope knob, position the clock waveform so that a
rising edge appears at the left of the display.
Testing Performance
To test the single-clock, single-edge, state acquisition
3–27