Tektronix TDS6404, Service Manual

Page: 108 / 252

Performance Tests
4- 52
TDS6000 Series Service Manual
h. Select an unchecked vertical SCALE:
H
Connect the 2X attenuator to the CH 1 input.
H
Move the signal to the CH1 input, change the Trigger Source to
CH 1 , and move the 50
Ω
terminator to the CH 4 input.
H
Press
PUSH TO SET 50%
.
H
Set the Vertical SCALE of CH 1, CH 2, CH 3, and CH 4 to 50 mV
H
Set the test signal amplitude for about five divisions on screen. Now
fine adjust the generator output until the
CH 1 Amplitude readout
indicates the amplitude is 250 mV. Readout may fluctuate around
250 mV.
H
Remove the 2X attenuator.
H
Repeat steps a through g.
H
Connect the 2X attenuator to CH 1.
H
Move the signal to the CH 1 input, change the Trigger Source to
CH 1 , and move the 50
Ω
terminator to the CH 4 input.
H
Press PUSH TO SET 50% .
H
Set the Vertical SCALE of CH 1, CH 2, CH 3, and CH 4 to 10 mV
H
Set the test signal amplitude for about five divisions on screen. Now
fine adjust the generator output until the
CH 1 Amplitude readout
indicates the amplitude is 50 mV. Readout may fluctuate around
50 mV.
H
Remove the 2X attenuator.
H
Repeat steps a through g.
4.
Display the test signal:
H
Connect the 2X attenuator to CH 1.
H
Move the signal to the CH 1 input, change the Trigger Source to
CH 1 , and move the 50
Ω
terminator to the CH 4 input.
H
Press PUSH TO SET 50% .
H
Set the Vertical SCALE of CH 1, CH 2, CH 3, and CH 4 to 100 mV .