Tektronix P6015 User Manual

OPERATING INSTRUCTIONS
Compensation
Check the compensation of the P6015 Probe each time
it is used with a different plug-in unit or oscilloscope.
Compensation should be checked occasionally during
normal use since changes in ambient temperature can also
affect compensation. Proper compensation matches the
capacitive attenuation ratio to the resistive attenuation
ratio.
The
P6015
Compensating
Box
contains
seven
adjustable
components.
All
except
R5
(see
schematic}
vary
the
time
constant
of
RC
networks.
The
adjustable
components
and
their
affect
on
a
1kHz
square
wave
(see
Fig.
2-1)
are
as
follows:
C3-Part
of
an
RC
network
that
affects
the
leading
corner
of
the
square
wave.
R1, C1-Comprise an RC network that affects the area
- immediately following the leading corner of the square
wave.
'R2,
C2—Comprise
an
RC
network
that
affects
the
middle
section
of
the
square
wave.
`
" Section 2—P6015 ` 2-1
R3—A high-frequency peaking adjustment that affects
the leading 10 to 100 nanoseconds of a fast-rise pulse. The
action of R3 will not be apparent with signals having
risetimes greater than 0.1 microsecond.
R5—An attenuation adjustment that varies output ampli-
tude by about 9%.
Compensation can be checked by displaying the oscillo-
scope calibrator 40-volt output through the P6015 Probe.
Adjust the oscilloscope controls (0.02 volts/div, sweep rate
0.5 ms/div) to display a waveform similar to Fig. 2-1. If the
waveform has aberrations, compensation is necessary. If the
aberrations cannot be corrected by making minor adjust-
ments, proceed as follows: :
1. Preset the following controls as indicated:
C3—Set fully clockwise and back off 90 degrees.
C1—Set fully clockwise and back off 90 degrees.
R1—Set fully clockwise and back off 90 degrees.
*

Tektronix P6015 Specifications

General

Brand	Tektronix
Model	P6015
Category	Measuring Instruments
Language	English