Test &Lb: Trailing Edge Test; Procedure - HP 8114A Service Manual

Test 8.lb: Trailing Edge Test
N o t e

Procedure

J-38 Testing the HP 8114A
3. Set the Digitizing Oscilloscope HP 54121T:
Press (AUTOSCALE)
l
= 3 6 5 , u s,
Select the Delta V menu and turn the voltage markers On
n
= 40.7
ns
4. Set period of HP 8114A to: Period = 1 ps
5. After the averaging, while the oscilloscope is in the Delta t menu,
Press the
[
PRECISE EDGE FIND
6. Check the HP 8114A rise time at the following leading edge setting:
Trailing edge for amplitudes >5 V from 5062 into 500.
The Leading Edge test must be performed before you start this test.
3
1. Set the Digitizing Oscilloscope HP 54121T:
= 542
ns
Set START ON EDGE = NEGl and STOP ON EDGE = NEGl
n
2. While the oscilloscope is in the Delta t menu, press the
[
PRECISE EDGE
3. Check the HP 8114A output signal falls at the following trailing
edge setting:
key
)
key
)
FIND
Oscilloscope Delay Period Acceptable TR
[ )
AUTO LEVEL SET