@6C68.ADF AC32 Dual RS-422/485 Adapter
The AC32 and AC34 -DO- support the PB16HQ Quad I/O modules.
AC32 Dual RS-422/485 Adapter For Micro Channel Computers
J1 (A) - DB9
J2 (B) - DB9
AC32 Bank A and B Jumper Settings
Each port is configured on the adapter by a group of 8 jumpers. Both Bank
'A" and "B" jumpers share the same function.
||Pull up jumper for transmit line
||Terminate jumper for transmit line
||Pull down jumper for transmit line
||Terminate jumper for receive line
||Pull down jumper for receive line
||Pull up jumper for receive line
||Enables RS-422/485 driver from RTS output on UART
AC32 Serial Port Pinout
The AC32 is a dual RS-422/485 adapter card (transient protected) and
features two independent asynchronous channels (each able to drive up to 100
devices on a multidrop network). Channel A can be selected for COM1 through
COM8 and channel B can be selected for COM2 through COM8. The AC32 offers full
hardware and software compatibility with IBM PS/2 Models 50, 60, 70, 80, and
compatible computers. The AC32 operates as a full duplex device with
transmission speeds up to 38,400 baud for distances up to 5,000 feet using two
twisted pairs per channel and a ground.