Tektronix LTA7P Series, Service Manual

Page: 97 / 172

TLA7Nx, TLA7Px, & TLA7Qx Logic Analyzer Module Service Manual
5- 11
Adjustment/Verification Fixture Adjustments
This section contains the adjustment procedures for the adjustment/verification
fixture. Most of the adjustments consist of moving jumpers or wires that change
the delays at specific locations on the board. Once these jumpers have been set
(soldered) you should rarely have to change them.
Each procedure includes a table that calls out the equipment used. Use Table 4--1
on page 4--3 to identify required equipment specifications. If you substitute
equipment, always choose instruments that meet or exceed the minimum
requirements specified.
Adjustment/Verification Fixture Adjustment
Equipment
Required Adjustment/verification fixture and power supply (item 2)
Oscilloscope (item 3)
Two 1 M
Ω
10X oscilloscope probe (item 4)
Frequency counter (item 8)
Signal generator (item 16)
1X Probe (item 5)
DMM with test leads (item 9)
Shorting jumpers (item 14)
Prerequisites Warm-up time: 30 minutes for adjustment/verification fixture and test
equipment
1. Warm up the adjustment/verification fixture and all test equipment.
a. Connect the external power supply to fixture and perform the power
supply checks and other functional steps while allowing the fixture to
warm up for 20 minutes.
b. Turn on the oscilloscope, signal generator, and frequency counter. Allow
them to warm up for 20 minutes.