Note
4.
On the HP
8114A
set up OUTPUT page as shown in the following
illustration:
Configuring the Output Page
5. Set the Digitizing Oscilloscope HP 54121T:
n
Set
timebase
to TIME/DIV = 10 ns/div
#
Center the positive-going edges of the two signals
l Select the Display menu and set the screen function to single;
set the number of averages to 32
m
Select the Delta V menu and turn the voltage markers ON and
assign marker 1 to channel 3 and marker 2 to channel 4
m
Set Preset levels to 50%
-
50% and press (AUTO LEVEL SET]
n Select the Delta t menu and turn the time markers ON
n
Set START ON EDGE= POSl and STOP ON EDGE= POS 1
n Press the (PRECISE EDGE
FINDI
key
6. Check the HP 8114A delay at the following settings:
Record the value of the fixed delay and subtract it from the other
readings.
able
3-6. Delay Settings and TR Reference
Oscilloscope
Timebase
Delay Acceptable Range
10
nsldiv
0.00
ns
fixed Delay
10
nsldiv
5.00
ns
3.75
ns
to 6.25
ns
10
nsldiv 10.0 ns
8.50 ns to 11.60 ns
20
ns/div
50.0
ns
46.5
ns
to 53.5
ns
20
ns/div
100
ns
94
ns
to 106
ns
100
nsidiv
600
ns
474
ns
to 526
ns
Testing the HP 8114A
3-l
1
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