Discovery QDR Series Technical Manual
4-20
Note: The last calibration scan data is saved in the file MOTOR_TX.DAT. You
can reanalyze the data–e.g., after editing SQDRIVER.INI–by typing the
command CALIBRATE @MOTOR_TX.DAT at the MOTOR$TX>
prompt in SQDRIVER.
4.6.0.5 MOTOR$AR (Discovery A and SL)
If you have replaced the encoder, before beginning this procedure, loosen the set screws
that secure the encoder coupling to the pulley shaft. If this is an initial installation, this is
unnecessary.
1. Confirm that the table is level front-to-back. Do this by removing the table pad.
Place the digital level on the table at the foot end and read the value on the level.
It must be 0º degrees ±0.0º degrees. Move the level to the head of the table. Con-
firm that the level is still at 0.0º degrees. Adjust the leveling feet as necessary to
obtain this result. Failure to perform this step will result in positioning toler
-
ance errors on whole body, lateral, and IVA scans.
2. Select the AR motor device driver by typing: MOTOR$AR<Enter>
3. At the MOTOR$AR> prompt, type: CALIBRATE<Enter>
The program prompts:
The program moves the TY and AY motors to their center positions, then moves
the TZ motor to its topmost position and prompts:
4. Remove the C-arm Tank cover.
5. Place the digital level on the top of the tank assembly (not on the top of the C-
arm) and use the Table IN/OUT switch on the operator panel to move the C-arm
until it is 0º ±0.0º
6. Remove the level.
7. Press <Enter>.
The program prompts:
Press <ESC> to stop calibration.
Use the Table IN / OUT switch to move the C-Arm to 0 degrees.
Press <Enter> when the C-Arm is positioned.
Press <ESC> to stop calibration.
Press <ESC> to stop calibration.
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