User Manual

20 MHX-2400 Operating Manual: Chapter 3 Configuration Options
The hopping interval is
controlled by the master.
The slave and repeater units
will use the hopping interval
setting from the master.
IMPORTANT:
FCC Regulations allow up to 36 dBi effective radiated power (ERP).
Therefore, the sum of the transmitted power (in dBm), the cabling loss
and the antenna gain cannot exceed 36 dBi.
1 mW = 0 dBm
10 mW = 10 dBm
100 mW = 20 dBm
1000 mW = 30 dBm
For example, when transmitting 1 Watt (30 dBm), with cabling losses of
2 dB, the antenna gain cannot exceed 36 - 30 + 2 = 8 dBi. If an antenna
with a gain higher than 8 dBi were to be used, the power setting must
be adjusted appropriately. Violation of FCC regulations can result in
severe fines.
S Register 109 - Hopping Interval
This option determines the frequency at which the modems change channel.
Note that the Master controls this parameter for the entire network. This
setting is ignored in units configured as Slaves or Repeaters.
The allowable settings are:
1 8 msec
2 12 msec
3 16 msec
4 20 msec
5 30 msec
6 45 msec
7 80 msec
*8 120 msec
See Appendix E for optimal Hopping Interval settings in relation to packet
size and link rate.
S Register 110 - Data Format
This register determines the format of the data on the serial port. Allowable
settings are:
*1 8 bits, No Parity, 1 Stop
2 8 bits, No Parity, 2 Stop
3 8 bits, Even Parity, 1 Stop
4 8 bits, Odd Parity, 1 Stop
5 7 bits, No Parity, 1 Stop
6 7 bits, No Parity, 2 Stop
7 7 bits, Even Parity, 1 Stop
8 7 bits, Odd Parity, 1 Stop
9 7 bits, Even Parity, 2 Stop
10 7 bits, Odd Parity, 2 Stop
11 9 bits, No Parity, 1 Stop