Db25 Control & Sequence - JPT LP Series User Manual

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)
2) DB25 Sequence
SUPPLY VOLTAGE 24V
PIN18 MO
PIN19 PA
PIN20 PRR
PUMP CURRENT
LASER OUTPUT
Setting1
PIN 1 0
PIN 2 0
PIN 3 0
PIN 4 0
PIN 5 0
PIN 6 0
PIN 7 0
PIN 8 1
Current ~50 %
Figure 15 DB25 Controlling Time Series Diagram
YDFLP-E-20&30&50-LP User's Manual
Setting2 Setting3
0 0
0 0
0 0
0 0
0 0
0 1
1 1
1 1
~75 % ~87.5 %
12
Setting4
0
0
0
0
1
1
1
1
~93.75
%
File Number: S-PI-0033