The other way of setting parameters is to use terminal on line. The parameters are setted by TTL/UART (4,5PIN) and the control pin of SET ( see the Figure 5).
APC220-43 will enter normal working (T1, see the Figure 4) mode after the voltage of
SET 50ms later. If user wants to set parameters online, you can lower the voltage of
SET firstly .Then APC220-43 will set the UART data rate at 9600bps automatically
and enter setting mode (T2) with no checkout 1ms later. User should send the
parameters command by RXD.After parameters checkout,the pin TXD will return
the parameters information(T3) in 200ms. User may set up the voltage of SET after
checking out the information that has been written.Finally, APC220-43 will work APC220-43
based on the new parameters in 10ms(T4). It must be noticed that user sent the
command to APC220-43 for only one time when APC220-43 at the setting mode. If
the command is wrong or the setting parameters are not completed, user should set
them again. However,one more important thing that user must do firstly is to set up
the voltage of the pin SET and enter the setting mode . It is the same as the way of
the last setting.
APC220-43 is set by ACSII. UART rate is 9600bps and no checkout. There are two
setting commands. They are reading and writing. It must use the capital letters. The
parameters are parted by blank. And the enter means end.
The command of reading parameters:
RD↙
ANSWER: PARA_frequency_rf data rate_output power_UART data rate_series
checkout
The command of writing parameters:
WR_frequency_ RF data rate_output power_UART rate_series_check↙
ANSWER: PARA_frequency_rf data rate_output power_UART data rate_series
checkout
The Parameters Table:
The parameters table
Parameters Bytes Instruction
Frequency 6 Unit is KHz,for example 434MHz is 434000.
Rf data rate 1 1,2,3 and 4 refer to 2400,4800,9600,19200bps
separetely.
Output power 1 0 to 9, 9 means 13dBm(20mW).
UART rate 1 0,1,2,3,4,5 and 6 refers to 1200,2400,4800,9600,
19200,38400,57600bps separately.
Series checkout 1 Series checkout:0 means no check,1 means even
parity,2 means odd parity.