User's Manual

17
%An Transmit Level. This command will set the modules transmit level. Use the chart
below to set the modules transmit level. The default is 0dBm. Issuing
AT%A160<CR> will set the module transmit level to 0dBm. The FCC has placed
transmit level limits on particular frequencies. In those cases the %Fn (Set
Frequency Command) will override and limit the %An Transmit setting. The %A
Command is invalid in Frequency Hopping Mode
Transmit
Level
AT%A Setting Transmit
Level
AT%A Setting
-20dBm AT%A2 -6dBm AT%A14
-18dBm AT%A3 -5dBm AT%A15
-16dBm AT%A4 -4dBm AT%A80
-14dBm AT%A5 -3dBm AT%A96
-13dBm AT%A6 -2dBm* AT%A112
-12dBm AT%A7 -1dBm AT%A128
-11dBm AT%A8 0dBm AT%A160
-10dBm AT%A9 +1dBm AT%A192
-9dBm AT%A10 +2dBm AT%A224
-8dBm AT%A11 +3dBm AT%A240
-7dBm AT%A12 +4dBm AT%A255
*Default setting of the AT%A command
Bn Frequency Hopping – When enabled the modules will constantly change the
frequencies that they are communicating on. When Frequency Hopping is enabled
the module uses its full range of 50 different frequencies. The starting frequencies
are defined by the AT%Fn command. Both modules must be set to ATB1 and use
the same AT %Fn setting.
B0 Frequency Hopping disabled (default)
B1 Frequency Hopping enabled
Frequency Hopping Notes: When enabled, ATI9 and ATMn commands
are invalid. The On Line Command Mode can only be used to disconnect
with the ATH or ATZ command. Frequency Hopping should only be used if
constant interference is inhibiting successful data transfers. Data throughput
may be slower when hopping is enabled. Frequency Hopping is invalid
when module is operating in Broadcast mode (AT\I1). The %A transmit
level command is invalid and the transmit level will always be 4dBm.