HS50_advance_level 2 - 第250页
07/2002 Editio n Student G uide HS -50 Advanc ed II 8 Y-Axis 32 0HDVXULQJ6HTXHQFH ➠ T urn the ma in swi tch to "O N". ➠ Connect the track signa l test er to the i ncremen tal encod er 1 of the x- / y- …
Student Guide HS-50 Advanced II 07/2002 Edition
8 Y-Axis
31
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➠ Turn on the machine.
➠ Relate your measurement setup to the x-, or y- axis respectively. (See Fig. 8.9 - 3).
➠ Adjust the oscilloscope.
➠ Set the track signal tester to the "Oscilloscope cal" position.
➠ With the help of the positioning switches CH1 and CH2, move the light spot exactly to the
center of the crosshairs of the screen.
➠ Set the track signal tester to the "signal output" position.
➠ Manually, move the appropriate axis (x = head / y = gantry) back and forth.
– If you adjusted the read head correctly, the following illustration will appear on the screen of
the oscilloscope:
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NOTE
The pulse width of the analog zero pulse is dependent on the speed at which the axis is
traversed.
07/2002 Edition Student Guide HS-50 Advanced II
8 Y-Axis
32
0HDVXULQJ6HTXHQFH
➠ Turn the main switch to "ON".
➠ Connect the track signal tester to the incremental encoder 1 of the x- / y- axis.
(See
Fig. 8.8 - 1).
NOTE
The testing sequences of the x- and y- axes are identical.
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➠ Connect the oscilloscope to the track signal tester.
➠ Set the oscilloscope to the values of the table below.
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➠ Set the track signal tester to selector switch "Oscilloscope cal.".
➠ With the help of the positioning switch of CH 1, set the direct current signal on the center of the
upper half of the screen.
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➠ Set the oscilloscope to the value of the table below:
➠ Set the track signal tester to position "Signal output".
➠ Manually, move the appropriate axis (x = head / y = gantry) back and forth.
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CH 1
"Oscilloscope
cal."
zero pulse DC 0.5 V/ DIV auto 20 ms
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CH 1
signal output zero pulse DC 0.5 V/ DIV
2.5V norm
pre- trig. 50%
20 ms
Student Guide HS-50 Advanced II 07/2002 Edition
8 Y-Axis
33
NOTE
If you adjusted the read head correctly, the following illustration will appear on the screen of the
oscilloscope:
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(1) No spurious peaks are allowed in this measuring range.
NOTE
Check the analog signal of the zero pulse, to ascertain that the zero pulse is discerned correctly.
If the zero pulse is not discerned correctly, the axis will reference to a spurious peak.
Placement offsets will be the result.
The pulse width of the analog zero pulse is dependent on the speed at which the axis is
traversed.
CH1