Performance Tests
4–38
TDS 500B, 600B and TDS 700A 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.
h. 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 g for each of
the remaining scale settings listed in Table 4–4 for the channel under
test.
H When doing substep e, skip the subparts that turn on the CHx Pk-Pk
measurement until you check a new channel.
H Install/remove 10X attenuators between the generator leveling head
and the channel input as 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
connector of the channel last tested.
Equipment
Required
One sine wave generator (Item 19, or optionally, item 25)
One precision coaxial cable (Item 5)
One 50 terminator (Item 4)
One dual-input coupler (Item 8)
Prerequisites See page 4–15
STOP. DO NOT use the vertical position knob to reposition any channel while
doing this check. To do so invalidates the test.
1. Install the test hookup and preset the instrument controls:
a. Initialize the front panel:
H Press save/recall SETUP.
H Press the main-menu button Recall Factory Setup.
H Press the side-menu button OK Confirm Factory Init.
Check Delay Between
Channels
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