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Figure 4.6 Connecting the Logic Probe

CAUTION

The digital channel input terminal does not support hot plugging. Do not insert or pull

out the logic probe when the instrument is in power-on state.

TIP

• For ground connection of high-speed signals, the ground lead shall be connected to the

ground test point near the measured signal, and the ground lead shall be kept as short

as possible.

• If there are a large number of input signal channels, please connect each signal to a

ground signal as far as possible. If there is only one ground test point, connect all ground

leads on the probe to the ground test point.

• Set the threshold value of the logic probe reasonably according to the actual level range

of the measured signal, and set the threshold value in the middle of the level range.

4.3.6 Function Inspection

1. Press the front-panel and a prompt message "Restore default settings?"

is displayed. Click or tap OK to restore the instrument to its factory default

settings.

2. Connect the ground alligator clip of the probe to the "Ground Terminal" as shown

Figure 4.7

Quick Start

Rigol DHO924 User Manual

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