Tektronix TDS7054, Service Manual

Page: 113 / 254

Performance Tests
TDS7104 & TDS7054 Service Manual
4- 53
50
Ω
coaxial cable
Output
Leveled
sine wave
generator
TDS7000 oscilloscope
2X Attenuator
Figure 4- 23: Initial test hookup
1. Install the test hookup and preset the instrument controls:
a. Hook up the test-signal source : Connect, through a 50
Ω
precision
coaxial cable and a 2X attenuator, the output of the generator to
CH 1
(see Figure 4--23).
b. Initialize the oscilloscope: Press the DEFAULT SETUP button.
c.
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
From the button bar, touch the Vert button. Set the termination of
each channel to 50
Ω
by selecting each channel tab and touching its
Termination 50
Ω
button.
H
Set the Vertical SCALE of CH 1, CH 2, CH 3, and CH 4 to 100 mV .
H
Set the Trigger SOURCE to
CH 1
.
H
Set the Horizontal SCALE 20 ns .
H
Touch the Close button.
H
From the button bar, touch the Meas button, select the Ampl tab,
and touch the
Amplitude
button.
2. Display the test signal:
H
Set the generator to output a 100 MHz sine wave. 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 500 mV. Readout may fluctuate around 500 mV.