Performance Tests
4-48
TDS7104 & TDS7054 Service Manual
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.
i. Check remaining vertical scale settings against limits (optional):
H If desired, finish checking the remaining vertical scale settings for
the channel under test by repeating substeps d through h for each of
the remaining scale settings listed in Table 4--7 for the channel under
test.
H When doing substep f, skip the subparts that turn on the CHx Pk-Pk
measurement until you check a new channel.
H Before doing substep f, touch the Clear button to remove the
previous channel measurements.
H Install/remove attenuators between the generator leveling head and
the channel input as needed to obtain the six division reference
signals listed in the table.
j. Test all channels: Repeat substeps a through h for all four channels.
3. Disconnect the hookup: Disconnect the test hook up from the input
connector of the channel last tested.
Equipment
required
One si ne wave generator (Item 12)
Three precision 50 Ω coaxial cables (I tem 4)
One power di vider (Item 14)
3 SM A female to female adapter connector (Item 17)
3 SM A mal e-t o-f emale BNC adapter connector (Item 18)
Prerequisites See page 4--27
STOP. DO NOT use the vertical position knob to reposition any channel w hile
doing this check. To do so invalidates the test.
1. Install the test hookup and preset the instrument controls:
a. Initialize the front panel:Press the DEFAULT SETUP button.
b. Modify the initialized front-panel control settings:
H Do not adjust the vertical position of any channel during this
procedure.
Check D elay Between
Channels
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