User manual

Connect Tech Blue Heat/Net User Manual
Revision 0.17 13
Figure 1: LED locations on 2, 4, 8 and 16 port Blue Heat/Net models
Serial Port LEDs
The serial ports LEDs (two, four or eight, depending on your model) indicate serial activity for
each port.
•
A flashing LED indicates that the port in question is receiving or transmitting data.
•
BN001-004 and BNG001-004 models: If the LED is on, there is an RS-232
connection detected on the RS-232 serial port.
Connecting Serial Devices
RS-232 Connections:
Typical RS-232 null modem connection
This is the typical way to connect to DTE type devices, such as the Blue Heat/Net. It is used
when hardware RTS-to-CTS flow control is required. The cable required is called a cross-over
or null modem cable, and is readily available at any electronics retailer/distributor.