Blue Heat/PCI User’s Manual, Connect Tech Inc.
Revision 0.11 44
Blue Heat/PCI PTM Adapter
The Blue Heat/PCI Pass Through Mux (PTM) adapter offers two asynchronous RS-232 serial
ports with Monitor Pass Through and Intercept Pass Through capab ilities. In Monitor mode the
Blue Heat/PCI PTM adapter allows you to monitor and pass through the data from a device
connected to one serial port to a device connected to the other serial port. This pass through
connection is maintained even if the power or software fails in the computer hosting the Blue
Heat/PCI PTM, but without monitoring capabilities.
In Intercept mode you can monitor, proce ss and then pass through the data from a devic e
connected to one serial port to a device connected to the other serial port. Once again this pass
through connection is maintained even if the power or software fails, but without
monitoring/processing capabilities.
Features
Two, asynchronous RS-232 serial ports
Supports data communications speeds up to 921 Kbps
A 16C2850 UART controls each port providing 128 bytes of TxD/RxD FIFO buffers
Independent port configuration with baud rates from 50 bps to 921 Kbps; data bits of 5, 6, 7
or 8; stop bits of 1, 1.5, or 2, and odd, even, or stick parity
Monitor Pass Through Mode: you can monitor a nd pass through data from a device on one
serial port to a device on the other serial port. If power or software fails the serial port
connections will default to direct pass through
Intercept Pass Through Mode: you can monitor, process and pass through data from a device
on one serial port to a device on the other serial port. If power or software fails the serial port
connections will default to direct pass through
Utilizes robust high quality Telecom DPDT relays to achieve direct pass through when power
fails
Onboard DB-9 connectors
No DIP switches or jumpers to set – full Plug and Play
Figure 17: Blue Heat/PCI PTM adapter
Female DB-9
Port 2
PCI Brid
g
e
16C2850 dual UART
CPLD
Blue Heat-2/PCI PTM adapter
Male DB-9
Port 1
DPDT Rela
y
s