GOS-6112 OSCILLOSCOPE
USER MANUAL
33
GOS-6112 OSCILLOSCOPE
USER MANUAL
34
5-2.Connecting Input Signals
Grounding
The most reliable signal measurements are made when the oscilloscope
and the unit under test are connected by a common reference (ground
lead) in addition to the signal lead or probe. The ground lead of the probe
provides the best grounding method for signal interconnection and
ensures the maximum amount of signal-lead shielding in the probe cable.
A separate ground lead (with a banana plug) can also be connected from
the unit under test to the oscilloscope ground jack on the front panel.
Probes
A probe provides the most convenient way to connect an input signal to
the oscilloscope. The standard ×1/×10 probes supplied to the oscilloscope
are shielded against electromagnetic interference and have a high input
impedance for low circuit loading.
CAUTION. To get the best waveform precisely, keep
probe ground and signal leads as short as possible.
Misadjust probe compensation can cause measurement error. Check and
adjust probe compensation whenever a probe is moved to a different
channel or oscilloscope. As for the probe compensation adjustment
procedure, refer to the “Probe Compensation”.
Coaxial Cables
Signal input cable can greatly affect the accuracy of a displayed
waveform. To maintain original frequency characteristics of the input
signal, use only high-quality, low-loss coaxial cables. Coaxial cables must
be terminated at both ends in their characteristic impedance to prevent
signal reflections within the cable. Use suitable impedance-matching
devices.
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