JPT YDFLP-E-20-LP-S - DB25 Control & Sequence

YDFLP-E-20&30&50-LP User’s Manual
12 File Number: S-PI-0033
2.4 DB25 Control & Sequence
1) Output power control
PIN1~8 controls the output laser power by TTL signal. The encoding can be set within the
range of 0~255 which is corresponding to the 0~100% output power. The actual output laser power
may not be a linear relationship with these settings. And the actual output power also relate to the
frequency (see Figure 4). Pls refer to the example in table 9 current setting:
Table 9 Current setting of LP fiber laser (example)
Setting1
Setting2
Setting3
Setting4
PIN 1
0
0
0
0
PIN 2
0
0
0
0
PIN 3
0
0
0
0
PIN 4
0
0
0
0
PIN 5
0
0
0
1
PIN 6
0
0
1
1
PIN 7
0
1
1
1
PIN 8
1
1
1
1
Current
~50 %
~75 %
~87.5 %
~93.75
%
2) DB25 Sequence
Figure 15 DB25 Controlling Time Series Diagram
SUPPLY VOLTAGE 24V
PIN18 MO
PIN19 PA
PIN20 PRR
PUMP CURRENT
LASER OUTPUT