1 Short press the【Set】key to switch and display four parameter values (FR1: PWM1 frequency; dU1: PWM1 duty cycle; FR2: PWM2 frequency; dU2: PWM2 duty cycle), there will be corresponding values before switching. The parameter name flashes to prompt.
2. Directly press the [Up] and [Down] keys to modify the current parameter value (long press to increase or decrease quickly).
3. Each of the two channels of PWM is preset with 3 frequency values. On the frequency display interface, press and hold the [SET] key to switch, and the duty ratios of the 3 frequencies are the same.
(XXX: range 1Hz~999Hz; XX.X: range 0.1Khz~99.9Khz; X.X.X.: range 1Khz~150Khz,).

Communication standard: 9600 bps
Data bits: 8
stop bit: 1
Check Digit :none
flow control :none
1. Set the frequency of PWM
"S1FXXXT": Set the frequency of PWM1 to XXX HZ (001~999)
"S1FXX.XT": Set the frequency of PWM1 to XX.X KHZ (00.1~99.9)
"S1F:X.X.X.T": Set the frequency of PWM1 to XXX KHZ (0.0.1.~1.5.0.)
‘S1': PWM1
'S2': PWM2
'F' : Frequency
'D': duty cycle
'T' is the end flag
2. Set the duty cycle of PWM
"S1DXXXT": Set the duty cycle of PWM1 to XXX; (001~100)
"S2DXXXT": Set the duty cycle of PWM2 to XXX; (001~100)
Set successfully and return: DOWN;
Setting failure returns: FALL.