Rev. 1.03
Technical Description
3.2.4. Shielding plate
If the StandAlone Master is installed together with drives of the SAC series in the same rack, a
shield plate must be inserted between the master and the drives. In addition, the manufacturer
recommends a minimum distance of 5 ... 10cm between the master and power-voltage-carrying
boards. Possibly provide an empty space.
3.3. Caution, laptop users
Observe the following sequence when connecting a laptop to a GIN-SAM4:
• Isolate the power supply of the laptop so that it is only supplied with power
from the battery.
• Connect the GIN-SAM4 and the laptop by an appropriate serial cable.
• Reconnect the power supply.
Reason: As a result of the electrical isolation, the laptop power supply levels are raised to a po-
tential of 110V (providing the laptop is supplied via the mains). Because there is no assurance
with conventional SUB-D connectors that the shield will contact before the signal lines,there is a
risk of potential equalization taking place via the signal ground line. This can destroy the related
SIO channel.
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