Serial port leds, Connecting serial devices, V.28 connections – Connect Tech BLUE HEAT/NET SYNC CTIM-00044 User Manual
Page 12: Basic async (v.28) rs-232 null modem connection, Figure 2: basic v.28 asynchronous connections, Figure 3: basic v.28 synchronous connections, Figure 4: basic v.28 synchronous connections
Connect Tech Blue Heat/Net Sync User Manual
12 Revision 0.03
Serial Port LEDs
The serial ports LEDs indicate serial activity for each port.
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A flashing LED indicates that the port in question is receiving or transmitting data.
Connecting Serial Devices
V.28 Connections:
V.28 has signaling levels the same EIA RS232.
Basic Async (V.28) RS-232 Null Modem Connection
This is the typical way to connect a Blue Heat/Net Sync to another serial device.
Figure 2: Basic V.28 Asynchronous Connections
Basic Sync (V.28) RS-232 Connection (Provides Clock)
Figure 3: Basic V.28 Synchronous Connections
Basic Sync (V.28) RS-232 Connection (Receives Clock)
Figure 4: Basic V.28 Synchronous Connections
NOTE: The Blue Heat/Net Sync clock signals are bidirectional.
See
2 - TX
3 - RX
15 - T/RXC
7 - SR
RX
TX
RXC
SR
Blue Heat/Net Sync
RS-232 Device
2 - TX
3 - RX
17 - T/RXC
7 - SR
RX
TX
RXC
SR
Blue Heat/Net Sync
RS-232 Device
2 - TX
3 - RX
7 - SR
RX
TX
SR
Blue Heat/Net Sync
RS-232 Device