User Manual

24 MHX-2400 Operating Manual: Chapter 3 Configuration Options
S Register 120 - RTS/DCD Framing
S Register 121 - DCD Timeout
The MHX-2400 supports two special types of data framing:
• Input (or RTS/CTS) Data Framing; and,
• Output (or DCD) Data Framing
Input Data Framing is enabled by configuring the Handshaking Parameter as
&K2. This type of framing makes use of the S120 parameter as illustrated
in Figure 5. Parameter S120 can be set to any value between 0 and 254 ms.
RTS
CTS
TXD
S120 (ms)
Data going into MHX-910
0 to 1 ms
Figure 5 - Input Data Framing
To enable output (DCD) data framing, set the Data Carrier Detect parameter
as &C2. This type of framing uses both S120 and S121 registers as shown
in Figure 6. Valid ranges for each parameter are 0 to 254 ms.
DCD
RXD
Data leaving MHX-910
S120 (ms) S121 (ms)
Figure 6 - Output Data Framing
S Register 123 - RSSI Reading
This register displays the average signal strength in dBm over the previous
four hop intervals. Valid RSSI readings apply only to units configured as
Slave or Repeater.