Tektronix TPS2012B, Руководство пользователя

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Reference
Options Settings Comments
BW Limit 20 MHz, Off Limits the bandwidth to reduce display noise;
fi lters the signal to reduce noise and other
unwanted high frequency components
Volts/Div Coarse, Fine Selects the resolution of the Scale knob
Coarse de
fi nes a 1-2-5 sequence. Fine
changes the resolution to small steps
between the coarse settings
Probe See the next table Push to adjust Probe options
Invert On, Off Inverts ( fl ips) the waveform with respect to
the reference level
The option for voltage and current probes is different: Attenuation or Scale.
Probe options Settings Comments
Voltage ► Attenuation 1X, 10X, 20X, 50X, 100X,
500X, 1000X Set to match the attenuation
factor of the voltage probe
to ensure correct vertical
readouts
Current ► Scale 5 V/A, 1 V/A, 200 mV/A,
100 mV/A, 50 mV/A,
20 mV/A, 10 mV/A, 1 mV/A Set to match the scale of
the current probe to ensure
correct vertical readouts
Back Returns to the previous
menu
Knobs Vertical Position knobs. Use the vertical Position knobs to move the channel
waveforms up or down on the screen.
Vertical Scale knobs.
Use the vertical Scale knobs to control how the oscilloscope
ampli fi es or attenuates the source signal of channel waveforms. When you turn a
vertical Scale knob, the oscilloscope increases or decreases the vertical size of
the waveform on the screen.
Vertical Measurement Overrange (Clipping).
Waveforms that extend beyond the
screen (overrange) and display a ? in the measurement readout indicates an
invalid value. Adjust the vertical scaling to ensure the readout is valid.
Key Points Ground Coupling.
Use Ground coupling to display a zero-volt waveform.
Internally, the channel input is connected to a zero-volt reference level.
Fine Resolution. The vertical scale readout displays the actual volts/division
setting while in the fi ne resolution setting. Changing the setting to coarse does not
change the vertical scale until the Scale control is adjusted.
TPS2000B Series Digital Oscilloscope User Manual 121