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Performance Tests
TDS 520A, 524A, 540A, & 544A Performance Verification
g.
Check against limits:
CHECK that the Pk-Pk readout on screen is within the limits
listed in Table 1-5 for the current vertical scale setting
.
When finished checking, set the horizontal SCALE back to the
50 ns setting.
Checking each channel’s bandwidth at all vertical scale settings is
time consuming and unnecessary. You may skip checking the remain-
ing vertical scale settings in Table 1-5 (that is, skip the following
substep, h) if this digitizing oscilloscope has performed as follows:
Passed the 100 mV vertical scale setting just checked in this
procedure.
Passed the
Verify Internal Adjustment, Self Compensation, and
Diagnostics
procedure found under
Self Tests,
on page 1-4.
NOTE
Passing the signal path compensation confirms the signal path for
all vertical scale settings for all channels. Passing the internal
diagnostics ensures that the factory-set adjustment constants that
control the bandwidth for each vertical scale setting have not
changed.
h.
Check remaining vertical scale settings against limits (optional):
If desired, finish checking the remaining vertical scale settings for
the channel under test by repeating substeps d through g for
each of the remaining scale settings settings listed in Table 1-5
for the channel under test.
When doing substep e, skip the subparts that turn on the CHx
Pk-Pk measurement until you check a new channel.
Install/remove 10X attenuators between the generator leveling
head and the channel input as is needed to obtain the six division
reference signals listed in the table.
i.
Test all channels:
Repeat substeps a through g for all four channels.
3.
Disconnect the hookup:
Disconnect the test hook up from the input con-
nector of the channel last tested.