8 kHz Galvo-Resonant Scanner and Controller
Chapter 4: Getting Started
Page 6
TTN118194-D02
5. Connect either an NI 68-pin connector to the
DAQ
port or a BNC cable to
the
GALVO IN
port to control the galvo mirror.
1
If using an NI 68-pin
connector, connect the other end to an NI breakout box or NI card. If
using a BNC cable, connect the other end to a voltage generator. The
analog input pin 21 controls the position of the galvo mirror. We
recommend a high-density shield NI connector (NI SH68-68 cable to
connect to the NI breakout box or NI SHC68-68-EPM cable to connect to
the NI card).
6. Connect a BNC cable to the
RES IN
port to control the resonant mirror.
Connect the other end of the BNC cable to any DC voltage generator
(0 - 5 V).
7. Connect one end of the AC power cord to the LSK-GR08(/M) and the
other end to a standard power outlet.
8. Turn on the power switch located on the back panel of the controller.
The FAULT LEDs may turn on for few seconds. This is normal as the
scanner is ramping up.
9. Install the LSK-GR software on your computer (see
Chapter 5: Software
for details).
10. After the software installation is complete, open the
LSKGR_Control
application. Make sure the serial number and firmware version appears
on the
LSK-GR
window.
11. Move the
Field Size
slider to control the scan range of the resonant
mirror. Move the slider to the right to increase the scan angle and to the
left to decrease the scan range.
Note: When the scan range is almost zero (Field Size value of 5 or analog
signal of 0 - 0.02 V), the processor turns off the resonant scanner. You
can control the scan range using the software or
RES IN
(0 - 5 VDC)
input.
RES OUT
(Sync Trigger Offset)
can only be controlled using the
software.
12.
To monitor the galvo mirror’s position and resonant mirror’s Sync Trigger
Offset, connect the BNC cables (
RES OUT/GALVO OUT
) to an
oscilloscope for feedback signals.
Note:
RES OUT
is a TTL output sync signal from the resonant scanner to
indicate zero crossing (the turnaround points). The output signal is a
square wave that goes from 0 V to 5 V at the start of the scan movement,
and then back to 0 V during the return movement.
GALVO OUT
is a
voltage (±4 V) proportional to the position of the mirror.
1
For more information on connection choices, see Section 3.2: Connector Choices.
