YDFLP-CL2-200-1/5-A&YDFLP-CL2-300-1/5-A User Manual
➢ 0xA5 (A5h) is the active pulse width control byte. 0xA5 and all subsequent data bytes
are input to Pin2 serial input.
➢ Data length of input laser is 4-bit bytes.
➢ The first byte of instruction code is 0x01.
➢ The Pin22 signal needs to be turned on 10us in advance before sending Pin2 and
Pin3 signals. After finished pulse width adjustment, Pin2 and Pin3 signals need ≥10us delay
before turning off Pin22 signal (as shown in Figure 13).
➢ All instruction design starts with byte 0xA5.
➢ Set Pin19 low before using pulse width control function.
2) Pulse Width Control Instruction Code
Table 11. Pulse Width Control Instruction Code
Instruction
Instruction Code
Description
Set-up pulse width
0x01
Set-up pulse width
（ns）
It takes less than 50ms to finish the fiber laser pulse width initialization.
Remarks: If Instruction code transmit 3 * 0x01 instruction, it will not be accepted by the laser.
3) Pulse Width Time Sequence
➢ The following figure is an example to illustrate the sampling series diagram with a
pulse width of 200ns. The series of 0x01 bytes of instructions is as follows:
Example: 0xa5 → 0x01 → 0x00 → 0xc8
0xa5: for activating pulse width control instruction
0x01: for setting pulse width instruction
0x00 and 0xc8: set the pulse width to 200ns.
14
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