TiePie Handyscope HS6 DIFF Series, User Manual

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Figure 3.12: The effect of the resolution
The Handyscope HS6 DIFF measures at e.g. 14 bit resolution (
2
14
=16384 levels).
The smallest detectable voltage step depends on the input range. This voltage can
be calculated as:
V oltageStep = F ullInputRange / LevelCount
For example, the 200 mV range ranges from -200 mV to +200 mV, therefore the
full range is 400 mV. This results in a smallest detectable voltage step of 0.400 V /
16384 = 24.41
µ V.
3.5 Signal coupling
The Handyscope HS6 DIFF has two different settings for the signal coupling: AC
and DC. In the setting DC, the signal is directly coupled to the input circuit. All
signal components available in the input signal will arrive at the input circuit and
will be measured.
In the setting AC, a capacitor will be placed between the input connector and the
input circuit. This capacitor will block all DC components of the input signal and
let all AC components pass through. This can be used to remove a large DC com-
ponent of the input signal, to be able to measure a small AC component at high
resolution.
When measuring DC signals, make sure to set the signal coupling of the
input to DC.
3.6 Probe compensation
When the inputs of the Handyscope HS6 DIFF are switched to single-ended ( Safe Ground
enabled), standard X1 / X10 attenuating oscilloscope probes can be used. These
are 1x/10x selectable passive probes. This means that the input signal is passed
through directly or 10 times attenuated.
Introduction
15