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3-5. Signal Adjustment
3-5-1. Signal Adjustment Preparations
Check that the interface unit is turned off.
Refer to section 4-1 for removing and attaching the cover of the interface unit.
1
Connect the CH1 probe of the oscilloscope to the check pins
∗
1 Output format A or H : TP1 (SIN) and TP7 (AGND)
Output format F or G : TP3 (SIN) and TP8 (GND)
2
Connect the CH2 probe of the oscilloscope to the check pins
∗
2 Output format A or H : TP5 (COS) and TP7 (AGND)
Output format F or G : TP2 (COS) and TP8 (GND)
Oscilloscope
CH2
3
Set the TIME/DIV switch to the X-Y mode.
4
Set the deviation sensitivity (VOLTS/DIV) of CH1 and CH2 to 0.5 V/DIV.
5
Set the input coupling switches of CH1 and CH2 of the oscilloscope to GND, and adjust the position of
the oscilloscope so that the signal is at the screen center for output format A and the signal is at the
bottom left for output format F, G, and H.
6
Set the input coupling switches of CH1 and CH2 of the oscilloscope to DC.
7
Turn the interface unit's power on.
Be sure that the interface unit is turned off before attaching or removing the probe of the oscilloscope.
3-10
(E)
Output format A, H
TP1
TP5
( SIN )
( COS )
CH1
Probe
CH1
CH2
TP7
TP9
TP10
(AGND)
(LD)
(APC)
TP5
(COS)
TP1
(SIN)
TP8
(DGND)
Interface unit
Fig. 3-13
∗
1
of the interface unit.
∗
2
of the interface unit.
TP7
( AGND )
Signal adjustment
section-detailed view
Output format F, G
CH1
TP3
TP2
TP7
TP901
CH2
TP6
TP8
TP5
BL57-NE
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