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applied to pin 3 of the extension connector. Pin 4 can be used as
ground.
The following minimum and maximum voltages apply to both
power inputs:
Note that the externally applied voltage should be higher than
the USB voltage to relieve the USB port.
7.1.1
USB power cable
The Handyscope HS3 is delivered with a special USB external
power cable.
One end of this cable can be connected to a second USB port on
the computer, the other end can be plugged in the external power
input at the rear of the instrument. The power for the instrument
will be taken from two USB ports of the computer.
28
Chapter 7
Minimum
SN#
12941
4.5 V
SN#
12941
4.5 V
Table 7.1: Maximum voltages
Figure 7.3: USB power cable
Maximum
6 V
12 V
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