
32
Chapter 5. Signal out and PID
5.1
MOGL
abs
DLC
laser controller
If using the
MWM
with a
MOGL
abs laser and
DLC
controller, connect the
MWM SMA
output to the
DLC SWEEP
input and set
DIP 9
on (external piezo
stack control); see figure below. Set both the offset and windup parameters
to 1.25 V. Use the
DLC SPAN
knob as a master gain on the
PID
feedback.
The
SCAN/LOCK
and fast lock should be off (up); only slow (piezo) feedback
will be active through the
SWEEP
control.
Laser
Wavelength stabilised
DLC Diode Laser Controller
MWM
SWEEP/PZT
Figure 5.1:
Stabilising a laser frequency with the
MWM
and
PID
. The
SMA
output of the
MWM
should be connected to the SWEEP/PZT input on the rear
of the MOGLabs
DLC
controller.
5.2
PID parameters
PID
servo output can be calculated and controlled by the host computer and
mogwave
, or from the
MWM
device operating standalone. In the latter case,
the parameters can be set using the on-device menus with
LCD
display
and pushbuttons, or using the web interface (see chapter 3), or using the
mogwave
PID
menu action.
Setpoint
λ
0
Defines the reference wavelength
λ
0
, for the the currently active
measurement
wavelength units set in the main
mogwave
window or on the
device.
Summary of Contents for MWM
Page 1: ...MWM wavemeter Revision 3 19 mogwave 1 4 15 Firmware 0 6 9 ...
Page 4: ...ii ...
Page 7: ...Contents v G Ugrading firmware 83 References 84 ...
Page 8: ...vi Contents ...
Page 54: ...46 Chapter 6 Calibration ...
Page 58: ...50 Appendix A Specifications ...
Page 66: ...58 Appendix B Communications ...
Page 70: ...62 Appendix C Programming ...
Page 86: ...78 Appendix E mogwave configuration ...
Page 92: ......
Page 94: ...86 ...
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