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Performance Tests
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
4- 91
Instrument under test
50
Ω
Coaxial cable
Digital
multimeter
Input
Figure 4- 20: Initial test hookup
1.
Install the test hookup and preset the instrument controls:
a.
Initialize the instrument:
Press the
DEFAULT SETUP
button.
b.
Hook up the test-signal source
: Connect, through a 50
Ω
precision
coaxial cable, the input of the multimeter to
CH 1
through adapters (see
Figure 4--20).
c.
Set the Vertical
SCALE
to
10 mV
per division
2.
Check input impedance against limits:
a.
Measure the impedance:
Read and record the measured impedance.
b.
Remove the dual banana connector from the digital multimeter (DMM),
turn it 180 degrees and reinsert it in the DMM input.
c.
Measure the impedance:
Read and record the measured impedance.
d.
Add the two measurements and divide the result by 2.
e.
Check — Average of the two measurements is
≥
48.75
Ω
and
≤
51.25
Ω
. Enter average on the test record.
3.
Set the Vertical
SCALE
to
100 mV
per division and repeat step 2.
4.
Repeat steps 2 through 3 for the remaining input channels:
a.
Move the test setup to an unchecked input channel.
b.
Set the Vertical
SCALE
of the channel to
10 mV
per division.
c.
Repeat steps 2
through 3.
5.
Disconnect the hookup:
Disconnect the equipment from the instrument.
Summary of Contents for CSA7404B
Page 4: ......
Page 14: ...Table of Contents x CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 18: ...Service Safety Summary xiv CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 20: ...Environmental Considerations xvi CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 23: ...Specifications ...
Page 24: ......
Page 55: ...Operating Information ...
Page 56: ......
Page 69: ...Theory of Operation ...
Page 70: ......
Page 74: ...Theory of Operation 3 4 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 75: ...Performance Verification ...
Page 76: ......
Page 80: ...Performance Verification 4 4 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 92: ...Brief Procedures 4 16 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 120: ...Performance Tests 4 44 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 215: ...Adjustment Procedures ...
Page 216: ......
Page 218: ...Adjustment Procedures 5 2 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 219: ...Maintenance ...
Page 220: ......
Page 228: ...Maintenance 6 8 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 308: ...Troubleshooting 6 88 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 310: ...Repackaging Instructions 6 90 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 311: ...Options ...
Page 312: ......
Page 319: ...Replaceable Electrical Parts ...
Page 320: ......
Page 322: ...Electrical Parts List 8 2 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...
Page 323: ...Diagrams ...
Page 324: ......
Page 327: ...Replaceable Mechanical Parts ...
Page 328: ......
Page 348: ...Mechanical Parts List 10 20 CSA7404B TDS7704B TDS7404B TDS7254B TDS7154B Service Manual ...