Multi-Serial Card :
Multi-serial cards are often used for connecting multiple RS-232 devices to a computer. Now a days, such cards have  PCI compatible bus. Earlier these cards were ISA compatible. If the application is for 3-D jobs like Die & Mould or pattern making, then TOURBO version of this card is available.

Some of the features are as under -

1) Eight RS-232 ports to desk top PC

2) Simultanious data communication to & from computer

3) On Board buffer memory for serial communication

4) Supports high baud rate such as 1,15,200

5) On Board serial controllers for fast communication & to reduce load on main CPU of computer

6) Supports both hardware & Software  hand shaking signals.

7) No external power supply needed.

8) Device drivers are given for virtual COM ports 

DIGITECH has used such cards at many places for CNC Networking. External opto-Isolators are required for safety against ground loops.