Tektronix LTA7P Series, Руководство по обслуживанию

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Performance Verification: Ajustment/Verification Fixture
4- 30
TLA7Nx, TLA7Px, & TLA7Qx Logic Analyzer Module Service Manual
Use the following procedure to verify the channel-to-channel data skew.
Parameter tested Channel-to-channel data skew
Equipment
required Oscilloscope (item 3)
2 DSO probes (item 4)
Custom probe tip adapter (see Figure 4--10, page 4--26)
Prerequisites Warm-up time: 30 minutes for adjustment/verification fixture and test
equipment
1. Set the jumper positions as listed in the following table.
Jumper Jumper name Jumper setting
J13 P6434 Deskew/probe setup 3-5 connected
J15 Clock selection INT
J16 Deskew 2-3 and 4-5 connected
J17 Setup/hold select HOLD
J19 Clock polarity select Removed
2.
Set up the oscilloscope by pressing Setup, Factory Setup, and then OK Con-
firm Factory Init to return the oscilloscope to default conditions.
3. Set up the oscilloscope as listed below.
a. Set up the CH1 and CH2 Vertical menu as follows:
H
Coupling DC/50
Ω
H
Fine Scale 200 mV/div
H
Position --3.00 div CH1
H
Position --3.32 div CH2
b. Set up the Horizontal menu as follows:
H
Time Base Main
H
Record Length 5000
H
Horizontal Scale Main Scale @ 2 ns/div
Verify Data Output
Channel-to-Channel Skew