4> Reference Point Position Check - Magnescale SR138-025R Instruction Manual

<4> Reference point position check
1 Connect the CH1 probe of the oscilloscope to the CL1 (ZG)
check land and TP4 (GND) check pin of the interface unit.
2 Connect the CH2 probe of the oscilloscope to the CN2-5 pin
(Z) and TP4 (GND) check pin of the interface unit.
3 Set the TIME/DIV switch of the oscilloscope to 200 ms.
4 Set the deflection sensitivity (VOLTS/DIV) of CH1 and
CH2 of the oscilloscope to 2V/DIV.
5 Set the input coupling switch CH2 of the oscilloscope to
GND, and adjust the oscilloscope to locate CH1 in the screen
center.
Adjust the oscilloscope to locate CH2 in one grid line below.
(Fig. 4-9)
30 (E)
CH1 (ZG)
CH2 (Z)
Fig. 4-9
6 Set the input coupling switches CH1 and CH2 of the
oscilloscope to DC.
7 Turn on the interface unit.
8 Position setting of reference point gate signal (CL1)
and reference point output signal (CN2-5pin)
Move the scale part or slider part and pass through the
reference point.
When passing through the reference point, set the switch 1/2
(reference point POS1/2SW) so that the reference point
output signal is output at the position nearest to the center of
the reference point gate signal. (Fig. 4-10)
Fig. 4-10
CH1 (ZG)
CH2 (Z)