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EPIA
EPIA
EPIA
EPIA-
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-M860
M860
M860
M860 User Manual
User Manual
User Manual
User Manual
32
3.4.
COM Voltage Select Jumpers
Each of the additional COM ports (available through the onboard COM pin
headers, see page 24) can support both +5V and +12V. COM2 has its own pin
header block. COM3 and COM4 share a single pin header block. COM5 and
COM6 also share a single pin header block.
3.4.1.
COM2 Voltage Select Jumper
The voltage for COM2 is controlled by the jumper labeled as “J6”. The
voltage can be 5V or +12V. +5V is the default setting. The jumper
settings are shown below.
Setting
Setting
Setting
Setting
Pin 1
Pin 1
Pin 1
Pin 1
Pin 2
Pin 2
Pin 2
Pin 2
Pin 3
Pin 3
Pin 3
Pin 3
+5V (default)
On
On
Off
+12V
Off
On
On
Table
Table
Table
Table 25
25
25
25: COM2 voltage select jumper settings
: COM2 voltage select jumper settings
: COM2 voltage select jumper settings
: COM2 voltage select jumper settings
Figure
Figure
Figure
Figure 31
31
31
31: Voltage select jumpers for COM2
: Voltage select jumpers for COM2
: Voltage select jumpers for COM2
: Voltage select jumpers for COM2 –
–
–
– COM6
COM6
COM6
COM6
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