Tektronix P6021A, Instruction Manual

Page: 41 / 81

Probing Principles
Maximum Allowable Pulse Amplitude
To determine the maximum allowable pulse
amplitude do the following:
1.
Measure the pulse width at the 50% points.
2. Divide the Ampere-second (or
Ampere-microsecond) speci
fi cation
for the range setting of the probe by the
pulse width.
The quotient is the maximum allowable
pulse amplitude; the peak amplitude of the
measured pulse must be less than this
value.
For example, the P6021A probe has a
maximum Ampere-second product of 500 A-
μ s.
If a pulse measured with the probe has a width
of 11
μ s, the maximum allowable peak current
would be 500 A- μ s divided by 11 μ s, or 45.5 A.
P6021A Current Probe Instruction Manual 20