6-5
6 Fault Diagnosis
6.4 Checklist for Fault Diagnosis
6.4.1 Controller OFV-3001 with the Sensor Head OFV-303/-353
Serial Number Controller:
Serial Number Sensor Head:
OFV-303
OFV-353
The serial numbers can be found on the back of the instruments and also on the inside cover of
this manual.
Target
Actual
1. Is the L
ED
POWER on the front of the controller lit up ?
Yes
2. Is the L
ED
LASER on the back of the sensor head lit up ?
Yes
3. After approximately 20 minutes operation, does the housing of the sensor
head feel warm to the touch as normal ?
Yes
4. Is the laser beam emitted ?
Yes
5. Does the signal level display on the back of the sensor head react ?
Yes
6. Does the signal level display on the display of the controller react ?
Yes
7. Does the output signal VELOCITY OUTPUT on the front of the controller
react to the movement of the reflective film ?
Yes
8. If the output signal does not react: How high is the DC offset ?
< 20 mV
9. Is the output signal noisy when the laser beam is blocked ?
Yes
10. Only for controller with displacement decoder:
Does the output signal DISPLACEMENT OUTPUT on the front of the
controller react to the movement of the reflective film?
Yes
11. How high are the voltages at the Sub-D jack INTERFEROMETER on the
back of the controller ?
Pin 1, 4, 7, 8 and 15
GND
Pin 3, 6 and 9
+ 16.0 V
Pin 2
+ 5.0 V
Pin 13
- 5.2 V
Pin 5 and 10
- 15.0 V
Further observations: