Calibrating Encoders
Model 493.02 Controller Service
Calibration
163
Task 1 Get things ready
Perform the following before you start encoder calibration.
1. Locate relevant documentation.
When calibrating an encoder, you will need information about the
encoder such as the serial number, model number, and a
specification called measuring step (resolution).
2. Open a station configuration file.
You need a station configuration file that includes a control
channel and a control mode that uses the encoder you intend to
calibrate.
Stand-Alone— Path: Config > Edit Config > Configuration File
Automated— On the File menu, select Open Station to open
the appropriate configuration file.
3. Select the Calibration access level.
You must access the Calibration user access level before you can
perform any of the calibration procedures. You may need to enter
a password.
Stand-Alone— Path: Config > Access Level > Calibration
Automated— In the Station Manager window toolbar, select
Calibration
4. Set up a signal monitor.
Note You cannot monitor the output of a new sensor until a sensor
calibration file has been created and the sensor assigned to an input
signal.
You will be monitoring encoder output when making adjustments
throughout this procedure. You can monitor the encoder output in
the same units that you are using for the calibration.
You can use an external DVM to monitor sensor output from a
BNC connector located on the FT SE Controller front panel.
You can also use the Meters window to monitor sensor output.