Tektronix TDS7000 Series Instruction Manual

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067-0405-01 and above
TDS7000 Series
Probe Calibration and
Deskew Fixture
Instructions
071-0730-03
Safety Summary
To avoid potential hazards, use this product only
as specified.
To avoid fire or personal injury
Do not operate in wet/damp conditions.
Keep product surfaces clean and dry.
Safety terms in this manual
WARNING.
These statements identify
conditions or practices that could result in
personal injury or loss of life.
Overview
This fixture converts the TDS7000 Series PROBE
COMPENSATION output into a set of test points
that give you a convenient way to:
H Compensate a passive probe (low-frequency).
H Optimize the oscilloscope gain and offset
accuracy at the probe tip.
H Compensate for timing differences between
two, three, or four voltage probes (deskew).
H Compensate for timing differences between
one, two, or three voltage probes and a current
probe (deskew).
Connecting to the Oscilloscope
The fixture has two BNC inputs, A and B. Use the
BNC cable (included) to connect the oscilloscope
PROBE COMPENSATION output to either the A
or B input. The input you use depends on the type
of probes you have and the operation you want to
perform.
Probe
2
Operation
Use
input
Passive Low frequency compensation A
P
a
s
s
i
v
e
voltage probes,
i
n
c
l
u
d
i
n
g
Gain and offset calibration
1
A
including
P6139A
Compensate timing with
respect to other voltage probes
A
Compensate timing with
respect to TCP202 current
probe
B
Compensate timing with
respect to CT-6 current probe
A
Active voltage
p
r
o
b
e
s
Gain and offset calibration A
probes,
including
P6243
P
6
2
4
5
Compensate timing with
respect to other voltage probes
A
P6245
P6246
P6247
P6248
P
6
2
4
9
Compensate timing with
respect to TCP202 current
probe
B
P6249
P7240
P7330
Compensate timing with
respect to CT-6 current probe
A
Current probe
TCP202
Compensate timing with
respect to voltage probes
B
Current probe
CT-6
Compensate timing with
respect to voltage probes
A
1
Gain and offset calibration for these probes is
generally not needed.
2
Not all probes are useable with all instruments.
NOTE.
The A side of the fixture has a small
jumper over two pins. Remove the jumper for
gain and offset calibration. Install the
jumper for all other functions.
Connecting Probes
WARNING.
To avoid personal injury, use care
while connecting probe tips to the square
pins on the fixtur e. The ends of the square
pins are sharp.
The following diagrams show how to attach each
type of probe tip to the fixture. Refer to the
ground symbols screened on the fixture to
establish the correct polarity.
P6139A
Connect the probe tip and the ground lead to the
two terminals as shown.
Bside
connection
Aside
connection
*P071073003*
071073003