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6
Using the Laser Head in a System
S o l v i n g P r o b l e m s
Here is information about three simple problems that may occur while you
are trying to make a measurement.
• If there is no red beam from the laser head:
• If the green LED on the receiver does not light:
• If the controller does not indicate motion of the measurement reflector:
60
•
Ensure that the laser head cable is securely connected to the back of
the laser head.
•
Ensure that the power supply is connected to the laser head cable.
•
Ensure that the power supply is plugged into an operating outlet and
that the
P O W E R O N
•
Ensure that there is a red beam from the laser head and the
LED is illuminated.
•
Ensure that the laser beam passes through the large aperture in the
laser head.
•
Ensure the laser head's reference connector is connected to the
electronics.
•
Ensure that the receiver cable is securely connected at the receiver
and at the system electronics.
•
Ensure that the system electronics are connected to an operating
power source and are turned on.
•
Ensure that the alignment of the laser head, optics, and receiver
causes the beam from the interferometer to be centered on the
receiver´s lens.
•
Block the beam between the interferometer and measurement
reflector. The reference- path beam should be centered on the
receiver's lens. When you unblock the measurement- path beam, it
should overlap the reference- path beam on the receiver lens.
•
If everything above seems correct, but the LED still doesn't light,
adjust the receiver's gain control.
•
Ensure that there is a red beam from the laser head and the
LED is illuminated.
•
Ensure that the laser system electronics are powered.
•
Ensure that the laser beam is properly aligned and that the
receiver's green LED is lighted.
•
If the receiver's green LED remains lighted when no measurement
signal is present, reduce the receiver's gain via its gain control.
•
Ensure that the controller is on and the program is running.
light is illuminated.
Agilent 5517B/BL/C/D/DL/FL User's Guide
R e a d y
R e a d y
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Troubleshooting
