SOHARD SH-ARC PCI, Руководство пользователя

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SH-ARC PCI Manual Version 01.00
4 Interfaces
4.1 Coax Interface
Connector type: BNC jack, insulated
Pin Assignment:
Pin Description Meaning
1 Shield Shield of coax cable
2 Center Center of coax cable
4.2 RS485 Interface
There are two types of the SH-ARC PCI which differ in connector type
and pin assignment. Both are described below.
Important Notice : In order to meet the CE specifications, the cable
connected to the SUB-D connector/jack must have a shielding braid,
which has to be connected to the connector with low impedance.
4.2.1 RS485-Interface according AUG (9 pin SUB-D male)
Assignment according AUG standard[5]
Connector type: 9 pin SUB-D male
Pin Assignment :
Pin Description Meaning
1 GND_SEL Can be connected to AGND (S1=ON) and/or
GND_RS via S2. (see chapter Dip Switch
Settings)
2 nc Reserved for additional power supply
3 DATA-B Data line B (more negative than
DATA-A when in idle state)
4 nc Reserved for direction control
5 GND_RS Data reference potential, supply
6 +5V_RS Isolated +5V Suppy for RS485 Interface. The
maximum Current must not exceed 25 mA.
7 nc Reserved for additional power supply
8 DATA-A Data line A (more positive than DATA-B when in
idle state)
9 nc Reserved for additional power supply
Shield AGND Shield
AGND is the bracket potential. GND_RS is the ground of the
electrically decoupled RS485 circuit.
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