Check Channel Isolation (Crosstalk); Figure 4- 19: Initial Test Hookup - Tektronix CSA7404B Service Manual

Performance Tests
Check Channel Isolation
(Crosstalk)
4- 86
Equipment One leveled sine-wave generator (Item 12)
required
One 2X attenuator (Item 26)
Four TCA-BNC adapters (Item 19)
Three 50 Ω terminations (Item 3)
One 50 Ω, precision coaxial cable (Item 4)
Prerequisites See page 4- - 17
Leveled
sine wave
generator
Output
50 Ω Coaxial cable

Figure 4- 19: Initial test hookup

1. Install the test hookup and preset the instrument controls:
a. Initialize the instrument: Press the DEFAULT SETUP button.
b. Modify the initialized control settings:
H Turn on all vertical channels (press the Vertical button of any off
channels: CH 1, CH 2, CH 3, and CH 4).
H Set the Horizontal SCALE to 1 ns.
H Set the Vertical SCALE of CH 1, CH 2, CH 3, and CH 4 to 100 mV.
H From the tool bar, touch Horiz and select the Acquisition tab. Set
the acquisition mode as follows:
TDS7704B: Touch Sample.
All other CSA/TDS7000B: Touch Average, set the number of
averages to 16.
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
Instrument under test
2X Attenuator
50 Ω Terminations