5-46 Performance Verification Rev. D
5.12 Time Base Accuracy
An external sine wave generator of
0.1 MHz
with a frequency accuracy better than
1 PPM is used.
Specifications & Test limit
500 MHz clock : accuracy :
≤
≤≤
≤
±
±±
±
0.001 % or
≤
≤≤
≤
±
±±
±
10 PPM
Procedure
!
Recall
xxxP048.PNL
or configure the DSO
Panel Setups :
Recall FROM DEFAULT SETUP
Channels trace ON
Channel 1
Input coupling :
DC 50
Ω
ΩΩ
Ω
Input gain :
.1 V/div.
Input offset :
0 mV
Trigger setup :
Edge
Trigger on :
1
Coupling 1 :
DC
Slope 1 :
Pos
Level 1 :
100 mV
Trigger mode :
Norm
Delay :
0 %
Time base :
10
µ
µµ
µ
sec/div.
Channel use :
4
Record up to :
50 k
!
Connect the
RF output
of the HP8648B generator through a 5ns 50 Ohm BNC
coaxial cable into Channel 1.
!
Set the generator frequency to
0.1 MHz
.
!
Adjust the generator output amplitude
to get
5 divisions peak to peak .
!
Store Channel 1 in Memory 1
!
Recall
xxxP049.PNL
or make the following change :
!
Set Post-trigger delay to
50.00 msec
!
Recall Memory
1 to A
!
Press :
WAVE PILOT
!
Measure :
MEASURE
!
Mode :
Custom
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