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Adjustment of MR duty
●In case of replacing the main PCB, SWM unit and MR encoder unit, be sure to make adjustments.
●In case of replacing the main PCB, be sure to perform [READING AND REWRITING OF EEPROM
DATA.] then [3.WRITING THE FIXED VALUES.]
How to adjust
� � Make sure that the electric current and voltage of the connected rated voltage power supply are set to the
set values, which are instructed on the PC screen. Then, turn the rated voltage power supply ON.
� � Select "1. MR DUTY ADJUSTMENT" in the menu of the AF-S DX55-200 inspection program.
[1. Adjustment for Electrical Device] → [Adjustment for MR-duty (Adjustment 1 of 2)]
△（Revision）
� � The confirmation screen for writing the fixed values in EEPROM appears. Select the appropriate item.
� � Following the instruction on the screen, rotate the MF ring slowly by hand in the direction from the infinity
to the close distance position. Make sure that the waveform on the oscilloscope has duty 50% and stop the
MF ring at the close distance-end.
C H 1 = 5 V
C H 2 = 5 V
D C 1 0 : 1
D C 1 0 : 1
⑤ Following the instruction on the screen, rotate the MF ring slowly by hand in the direction from the close
distance to the infinity position. Make sure that the waveform on the oscilloscope has duty 50% and stop
the MF ring at the infinity-end.
Note：In case the waveform from infinity to close distance position or vice versa does not have duty 50%,
repeat "INSPECTION AND ADJUSTMENT OF THE MR ENCODER OUTPUT WAVEFORM" on
Page A7.
Standard Ｈ：Ｌ＝ 100：150 ～ 150：100（50％ ±10.0％）
Changed page △ ×2
△（Revision）
5 m s / d i v
NORM 200KS/s
- A36 ･ AF-S DX55-200/4-5.6G -
JAA79351-R.3670.A
[8. Writing of EEP-ROM Fixed Values]
● Setting of oscilloscope
V/Div（CH1）
：5V
V/Div（CH2）
：5V
Coupling
：DC
：5 m Sec
Time/Div
Trigger Mode
：NORMAL
Trigger Coupling
：DC
Trigger Source
：CH １
Trigger Position
：+4 div
Trigger Type
：EDGE
Trigger Level
：2.5 V
Ｈ
Ｌ
December. 19. 2006
INC
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