ST STEVAL-IHM020V1, User Manual, Page: 13 / 23

UM0583 Using the demonstration board
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4.3 Getting started
Warning: The demonstration board is not electrically isolated from the
AC input. The MCU is directly linked to the mains voltage. No
insulation is ensured between the accessible parts and the
high voltage. The STCC08 demonstration board must be used
with care and only by persons qualified to work with
electricity at mains voltage levels.
Any measurement equipment must be isolated from the mains before powering the board.
To use an oscilloscope with the demonstration board, it is safer to isolate it from the AC line.
This prevents electric shocks which can occur as a result of touching any single point in the
circuit, but does not prevent shocks when touching two or more points in the circuit.
There is no insulation varnish on solder points. Care should be taken when performing
measurements (for example, voltage probes must be connected only when the line and the
power supply voltages are removed).
4.3.1 Procedure
Figure 8 shows the board and the main components used.
Figure 8. STCC08 demonstration board (top view)
AM01 3 4 3 v1
SW2 SW3 SW1 SW4
SW5
U2
U1
U3
D6
D9
D8
D7
D5
J3
J1
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