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Model 3314A
C. Connect the 50 Ohm Feedthrough Termination to
the 3314A's
Main
Output.
Connect
the 5000
Feed-
through Termination to the 3314A's X3 Output.
D.
Connect
the oscilloscope's
1МО
input to the
3314A's X3 Output.
E. Set the oscilloscope to display 2 complete cycles
with the peaks of the square wave at the 0% and 100%
graticule lines.
F. Using the oscilloscope's delay function (set the
delayed time per division to .1yS/DIV), measure the rise
and fall time from the 10% to 90% graticule lines. In
both
cases,
this
should
be
less
than
2
divisions
( <200ns).
4-23. RESIDUAL DC OFFSET
This test measures the DC voltage output from the X3
Output with no signal present.
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Performance Tests
Required Equipment:
AC/DC
Digital Voltmeter
50 Ohm Feedthrough Termination
A 5000 Feedthrough Termination consisting of:
1 4990 resistor, -hp- part number 0698-4123
Procedure:
A. Preset the 3314A.
B. Set the 3314A as follows:
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OVDC
C. Connect the 50 Ohm Feedthrough Termination to
the 3314A's
Main
Output.
Connect
the 5000 Feed-
through Termination to the 3314A's X3 Output.
D. Measure the DC voltage at the X3 Output. This
voltage should be within 40mV of OVDC,
AC/DC DIGITAL
VOLTMETER
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50 OHM
FEEDTHRU
TERMINATION
NO CONNECTION
Figure 4-22. Residual DC Offset Connections
4-25/4-26
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