Tektronix TDS6404, Руководство по обслуживанию

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Performance Tests
4- 56
TDS6000 Series Service Manual
Time Base System Checks
These procedures check those characteristics that relate to the time base system
and are listed as checked under
Warranted Characteristics in Specifications.
Equipment
required One timer-counter (Item 11)
One 50
Ω
, precision coaxial cable (Item 4)
One SMA male-to-female BNC adapter (Item 19)
One sine wave generator (Item 12)
Prerequisites See page 4--17
50
Ω
Coaxial cable
Input
Timer-counter
TDS6000 Series
Figure 4- 20: Initial test hookup
1. Install the test hookup and preset the instrument controls:
a. Hook up the test-signal source : Connect, through a 50
Ω
precision
coaxial cable, the input of the timer-counter to
REF OUT
(see
Figure 4--20).
H
Set the timer-counter gate to 1 s.
H
Set the timer-counter to count the reference output.
b.
Initialize the oscilloscope:
Press the DEFAULT SETUP button.
2. Confirm the time base is within limits for accuracies:
a.
Check long-term sample rate and delay time accuracies against limits:
H
CHECK that the count on the timer-counter is within limits.
H
Enter the count on the test record.
Check Long-Term Sample
Rate and Delay Time
Accuracy and Reference