Tektronix P6042 PROBE, Instruction Manual

Page: 41 / 72

Calibration—Type P6042
Fig. 6-16. Test setup for step 14.
Vertical Plug-In
Mode
Trigger
Volts/cm
Variable
Input Coupling
Position
Ch 1
Norm
.05
Cal
DC
trace centered
Time-Base Plug-In
Horiz Display A
Mag Off
Time/cm 20 µs
Trig Mode Auto
Slope
+
Coupling AC
Source Int
b. Connect the cable from the P6042 OUTPUT to the DC
to 100 MHz test oscilloscope Ch 1 Input, terminated in 50 Ω.
c. Connect the current loop to the square-wave generator
— Transition output. Connect the probe to the current loop.
See Fig.6-16.
d. Set the square-wave generator Repetition Rate Range
to 10 kHz and switch to Fast Rise. Adjust —Transition Ampli­
tude for a 4-centimeter display.
e. Refer to Fig. 6-17 for location of compensation adjust­
ments and square-wave
time relationship of each.
f. Adjust R102 for best leading edge and square corner
on waveform.
g. Change Time/cm to 2 µs.
Adjust R18 and R24 for flat
top and no ringing.
h. Change Time/cm to .1
µs.
Adjust C100, R100, and R105
for best leading edge and square corner on waveform.
6-13