Magtrol DSP6000 User Manual - page 28
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Magtrol Model DSP6000 Dynamometer Controller
Chapter 6 - Calibration
NOTE:
The magnitude of change per
revolution can be increased by
pressing the UP ! button or
decreased by pressing the
DOWN " button.
6. Apply 0.000 VDC.
7. Press the ZERO button.
8. Adjust the Decrease/Increase Dial until the display
indicates 0 mVDC.
9. Repeat steps 3 through 8 to complete this procedure.
10. Record the correction factors displayed above the
ZERO and GAIN readouts for future reference.
A
CCESSORY
T
ORQUE
O
FFSET
AND
G
AIN
1. Connect the DMM common to Pin 4 of the
Accessory Torque-Speed Output connector.
2. Connect the DMM high to Pin 2 of the Accessory
Torque-Speed Output connector
3. Apply 0.000 VDC
4. Adjust R24 (OFFSET) on the circuit board for 0
mVDC on the DMM.
5. Apply +2.000 VDC.
6. Adjust R25 (GAIN) on the circuit board for +2.000
VDC on the DMM.
A
UXILIARY
I
NPUT
O
FFSET
AND
G
AIN
1. Press the SHIFT button once. Display indicates
AUX INPUT calibration.
2. Connect the external voltage reference to the
Auxiliary Input BNC connector.
3. Apply +5.000 VDC.
4. Press the GAIN button.
5. Adjust the gain by turning the Decrease/Increase
Dial until the displayed voltage equals the reference
voltage.
NOTE:
The magnitude of change per
revolution can be increased by
pressing the UP ! button or
decreased by pressing the
DOWN " button.
6. Apply 0.000 VDC.
7. Press the ZERO button.
8. Adjust the Decrease/Increase Dial until the display
indicates 0 mVDC.
9. Repeat steps 3 through 8 to complete this procedure.
10. Record the correction factors above the ZERO and
GAIN readouts for future reference.
11. Press the SHIFT button once to return to default
display.
A
LTERNATE
C
ALIBRATION
P
ROCEDURE
The DSP6000 can also be calibrated by using a certified
dynamometer, calibration beam, and weight instead of
an external voltage reference.
NOTE:
Magtrol suggests you do NOT
use this method. By using the
alternate calibration procedure,
you are calibrating the DSP6000
to a specific dynamometer, not to
a reference standard. If you
connect the DSP6000 to a
different dynamometer, the
resulting torque reading may be
incorrect.
1. Connect the chosen dynamometer to the DSP6000
using the 14-pin signal cable and the 2-pin brake
cable.
2. Attach the calibration beam to the dynamometer
shaft.
3. Enter the calibration mode.
4. Press the BRAKE ON/OFF button ON to apply full
loading to the dynamometer.
5. Hang the weight on the calibration beam pin and
level the beam.
6. Press the GAIN button.
7. Adjust the gain by turning the Decrease/Increase
Dial until the displayed voltage equals the reference
voltage.
NOTE:
The magnitude of change per
revolution can be increased by
pressing the UP ! button or
decreased by pressing the
DOWN " button.