Probe Controls - Tektronix P5200A Instruction Manual

Probe Operating Information

Probe Controls

The P5200A Series probes have several features that make probing and measurement a simpler task. Familiarize yourself
with the controls shown on the following pages. The attenuation ranges differ between probe models.
Overrange Indicator
The overrange indicator lights red if the
voltage of the input signal exceeds the
linear range of the range setting. When this
happens, the signal on the probe output
does not accurately represent the signal on
the probe input.
WARNING. The Overrange indicator
does not detect overrange condition of
common-mode voltages or voltage-to-earth
potential at the probe inputs. The Overrange
indicator only detects differentially between
the + and – inputs (not relative to ground).
Do not exceed the common-mode voltage
or input voltage-to-earth ratings of the probe
when taking measurements. (See page 27,
Overrange Detection.)
If you are not sure, make a single-ended
measurement of each point you are intending
to measure differentially first. Make a
single-ended measurement by tying one
input lead to ground (the "–" input) and then
connecting the other lead (the "+" input) to
the points of interest, one at a time.
Attenuation Button and Indicators
Press the button to select between the
voltage range (attenuation) settings of the
probe. The range is indicated by two LEDs
on the probe and may be displayed on
the oscilloscope screen, depending on the
oscilloscope model.
P5200A models only: To display the actual
probe voltage instead of a scaled value, you
must match the attenuation setting of the
oscilloscope to the probe attenuation setting.
Use the on-screen Probe Setup menu on the
oscilloscope to change the setting.
The Overrange LED lights if the applied
voltage exceeds the selected range. To
extinguish the LED, select a higher range.
If a higher range is not available, do not
attempt to take the measurement.
5 P5200A Series High Voltage Differential Probes Instruction Manual