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GSI Group - Laser Division
JK300HP/JK300P/JK125P
Pre-installation and User Manual
Issue 2.0
Page 18 of 172
Part No: 1EA300E01
The following is an example of setting a parameter value.
To set a rate frequency of 260Hz, the following BCD ‘word’ would be required:
A1 B8 B4 B2 B1 C8 C4 C2 C1
0 0 1 0 1 0 0 1 0
This gives a decimal word of 52, the step resolution for frequency adjustment is 5, thus the
set frequency is 52 x 5 = 260Hz.
BCD data present at the Controller is accepted by the Laser only when the PARAMETER
STROBE input is active. Reading of data is acknowledged by the PARAMETER
ACKNOWLEDGE output from the Laser which remains active until the PARAMETER
STROBE input is removed.
Figure 4 illustrates the times taken to change the parameters.
Figure 4 - Parameter Timing Diagram
Name
Description
Min
Max
T
SD
Strobe Delay Time
300
µ
s
-
T
SP
Time from Strobe to
Acknowledgement
-
2ms
T
SM
Minimum Strobe Width
1ms
-
T
i
Interval between parameter set
-
1ms
Parameter
Selection
BCD Data
Parameter
Strobe
Parameter
Acknowledge
T
SP
T
SM
T
SD
T
SD
T
i
Petitioners Canadian Solar Inc. and Canadian Solar (USA) Inc.
Ex. 1025, p. 18