User manual

VB7009
VB7009VB7009
VB7009 User Manual
User ManualUser Manual
User Manual
37
3.2. COM Voltage Select Jumpers
Each of the additional COM ports (available through the onboard COM pin
headers, see page 25) 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.
3.2.1. COM2 Voltage Select Jumper
The voltage for COM2 is controlled by the jumper labeled as “J12”. The
voltage can be either +5V or +12V. +5V is the default setting. The jumper
settings are shown below.
1
Figure
Figure Figure
Figure 31
3131
31: COM2 voltage select jumper
: COM2 voltage select jumper: COM2 voltage select jumper
: COM2 voltage select jumper
Setting
SettingSetting
Setting Pin 1
Pin 1Pin 1
Pin 1 Pin 2
Pin 2Pin 2
Pin 2 Pin 3
Pin 3Pin 3
Pin 3
+5V (default) On On Off
+12V Off On On
Table
Table Table
Table 27
2727
27: COM2 voltage select jumper settings
: COM2 voltage select jumper settings: COM2 voltage select jumper settings
: COM2 voltage select jumper settings