SI-MT/SI-MKB/SI-HTB
WORLD PRECISION IN STRU MENTS
13
is running. During normal operations, this display can show the calculated (actual)
sarcomere spacing, the fi rst order diffraction distance or the signal amplitude. During
confi guration, this display shows parameters and confi rmation messages.
Laser Intensity
–Rotate this dial to change the intensity of the laser's power output.
Sync Output
–This digital output is used for synchronizing the video with a timing
reference. Connect this BNC port to an oscilloscope channel used as a synchronization
source (trigger).
Video Output
–Connect this BNC port to an oscilloscope to monitor the output of the
linear camera.
USB Port
–This port is reserved for future development.
Analog Outputs
–The Sarcomere and Distance analog outputs can be connected to a data
acquisition system to monitor the sarcomere spacing and measured distance:
•
Approximate sarcomere spacing length can be accessed from the
Sarcomere
analog output. 1.0V corresponds to 500nm sarcomere length. This output uses the
equation described on the preceding page: s =
x (D/L). The actual sarcomere length
is calculated and displayed on the digital display. Press the
Display
button until
"Sarcomere Space" appears.
•
The measured distance between the center beam and the fi rst order diffraction can
be read from the
Distance
analog output BNC connection. 10.0V corresponds with
a fi rst order diffraction distance of 40mm from the center beam. The sarcomere
length can be calculated from this value using the equation:
s =
x
D
2
/L
2
+1
. The
measured distance is shown on the digital display. Press the
Display
button until "First
Order Dist" appears.
Confi guration Buttons
–The Display button is used to toggle the display between the fi rst
order of diffraction distance and the signal amplitude. The Setup button rotates through
the array of confi gurable parameters. The Up and Down buttons are used to adjust the
parameters.
Laser Connection
–The cord from the laser plugs into this connection to power the laser.
Camera Connection
–The cord from the linear, CCD camera plugs into this connection to
power the camera.
SI-MOTDB
The SI-H Linear Motor Controller is designed for use with the SI-H line of muscle
physiology research platforms. For systems that require a linear motor, this unit provides
the precision control of the motor. A linear motor is required for measuring mechanical
muscle properties such as slack-test, isotonic release, constant velocity release, stretch
release, vibration studies, after-loaded contractions and eccentric contractions (intact muscle).
