Evaluation tools for encoder IC

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

Contents
1-1. SME-08A/B Evaluation circuit boards
1-2. SME-08A/B Evaluation scales
SME-08A Rotary scale
SME-08B Rotary scale
SME-08A/SME-08B Linear scale

2-1. SMD-01B, SMD-04B Evaluation circuit boards
2-2. SMD-01B, SMD-04B Evaluation scales
SMD-01B Linear scale
SMD-04B Linear scale
SMD-01B/SMD-04B Rotary scale

3-1. SM3414B Evaluation circuit boards
3-2. SM3414B Evaluation scales
SM3414B Linear scale

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

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1-1. SME-08A/B Evaluation circuit boards◼ Signal monitoring wires should be connected to the terminal pattern at theboard end.
Evaluation board
Top View

Bottom View

◼ Guidelines for aligning the NPC evaluation scale are provided on top surface ofthe evaluation board.
◼ The dotted line is a guide to the center of scale pattern.
◼ The solid line is a guide for the outline of the rotary scale.
◼ The upper circle is a guide for use at 865PPR and the lower circle is a guidefor use at 500PPR.
Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

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1-1. SME-08A/B Evaluation circuit boards[ Evaluation board: External dimensions ]

46.4
41.0

5.4

11.0

29.9

Φ2.8

2.8×5.6

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

Unit: mm3

1-2. SME-08A/B Evaluation scale[ SME-08A: Metal rotary scale ][ Detail view of Z-phase pattern section ]Z-phase pattern section
Pattern period
360/865=0.416185°
Non reflective pattern angle
period/2=0.2080925°
Reflective pattern angle
period/2=0.2080925°
Z-phase pattern angle
0.2080925°*3=0.624277°

Pattern period
360/500=0.72°
Non reflective pattern angle
period/2=0.36°
Reflective pattern angle
period/2=0.36°
Z-phase pattern angle
0.36°*3=1.08°

Outer diameter: φ23.827(865*0.08/PI + 1.8)
Center diameter: φ22.027(865*0.08/PI)
Inner diameter: φ20.227(865*0.08/PI -1.8)

Outer diameter: φ14.532(500*0.08/PI + 1.8)
Center diameter: φ12.732(500*0.08/PI)
Inner diameter: φ10.932(500*0.08/PI -1.8)

Scale Base Material: Metal
Scale Thickness: 0.07mm
Evaluation tools for Encoder IC
EVTE240010-E001 2024.034

1-2. SME-08A/B Evaluation scale[ SME-08B: Metal rotary scale ][ Detail view of Z-phase pattern section ]Z-phase pattern section
Pattern period
360/865=0.416185°
Non reflective pattern angle
period/2=0.2080925°
Reflective pattern angle
period/2=0.2080925°
Z-phase pattern(right) angle
0.2080925°*5=1.0404625°
Z-phase pattern(left) angle
0.2080925°*3=0.624277°
Z-phase pattern spacing angle
0.2080925°*11=2.289018°

Pattern period
360/500=0.72°
Non reflective pattern angle
period/2=0.36°
Reflective pattern angle
period/2=0.36°
Z-phase pattern angle
0.36°*3=1.08°
Z-phase pattern(right) angle
0.36°*5=1.8°Z-phase pattern(left) angle
0.36°*3=1.08°
Z-phase pattern spacing angle
0.36°*11=3.96°
Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

Outer diameter: φ23.827(865*0.08/PI + 1.8)
Center diameter: φ22.027(865*0.08/PI)
Inner diameter: φ20.227(865*0.08/PI -1.8)

Outer diameter: φ14.532(500*0.08/PI + 1.8)Center diameter: φ12.732(500*0.08/PI)
Inner diameter: φ10.932(500*0.08/PI -1.8)

Scale Base Material: Metal
Scale Thickness: 0.07mm

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1-2. SME-08A/B Evaluation scale[ SME-08A, SME-08B: PET linear scale ]LED placed on the upper side

Origin position(SME-08A)(SME-08A)↑Non reflective↑Reflective↑Reflective↑Reflective
Origin position(SME-08B)(SME-08B)

Scale Base Material: PET
Scale Thickness: 0.2mm

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

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2-1. SMD-01B, SMD-04B Evaluation circuit boards◼ Connect the monitor board and the evaluation board via FFC.
◼ The signal is output from the designated PIN on the monitor board.

Monitor boardEvaluation board◆ The SMD-01B and SMD-04B evaluation boards are identical.
◆ Monitor board is different between SMD-01B and SMD-04B.

Evaluation tools for Encoder IC
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2-1. SMD-01B, SMD-04B Evaluation circuit boards[ Evaluation board: External dimensions ]Top view[ Unit: mm ]

25.0
1.4

2.4

9.0

3.63

14.935* PCB thickness 1.6mmFigure shows part surface pattern only
Evaluation tools for Encoder IC
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2-1. SMD-01B, SMD-04B Evaluation circuit boards[ Monitor board top view: External dimensions ]Top view[ Unit: mm ]15

* The signal of the upper right pin is different
SMD-01B: GND
SMD-04B: VZ

35

SMD-01B

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

SMD-04B

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2-1. SMD-01B, SMD-04B Evaluation circuit boards[ Monitor board bottom view ]SMD-01B

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

SMD-04B

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2-3. SMD-01B, SMD-04B Evaluation scale[ SMD-01B: Glass linear scale ]Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

Top view[ Unit: mm ]11

2-3. SMD-01B, SMD-04B Evaluation scale
Top view[ Unit: mm ][ SMD-04B: Glass linear scale ]Reflective area

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

Non-reflective area12

2-3. SMD-01B, SMD-04B Evaluation scale
Top view[ Unit: mm ][ SMD-01B, SMD-04B: Glass rotary scale ][ Detail view of Z-phase pattern section ]Z-phase pattern(Reflective area)

Reflective area
Width: 0.040mm

Scale Thickness: 1.0mm

0.5mm

Reflective area
Non-reflectivearea

Inner edge
(R 6.700mm)

スケール厚=1.0mm* The Z-phase signal generated by the Z-phase pattern is output only on the SMD-04B.
When used with SMD-01B, the amplitude of the incremental signal is slightly affected near the Z-phase pattern.
Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

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3-1. SM3414B Evaluation circuit boards◼ Basic configuration

Monitor board

Power
電源、制御信号supply, control signals
VDD, VSS, RSTN, PDN

Evaluation board

Monitor pin

FFCConnector

Mountinghole
4 x 2mm

FFC connector

14pin FFC/FPC

LED brightness control signals
LED_CON, RLEDO
IC output signals
PA, PB, MON1, MON2
Serial communication signals
CLK, SEN, DATAOUT, DATAIN◆ Use signals from the monitor pin positions on the monitor board.
◆ For details on each signal, refer to the datasheet and application note.
◆ Before using absolute output, initialization of registers via serial communication is required.
◆ Please initialize the registers by referring to the datasheet and the application note.
◆ LED_VDD is connected to VDD on the evaluation board.
◆ LED current adjustment resister is already mounted; if you need to change the LED current, pleasechange the resister value.
Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

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3-1. SM3414B Evaluation circuit boards◼ External dimensions (Unit: mm)

FFC connector

FFCConnector

Mountinghole
4 x 2mm

Monitor pin

Mountinghole
4 x φ3.0

Evaluation board

Monitor board

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

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3-2. SM3414B Evaluation scale◼ Dimensions (Unit: mm)
57mm
52mm

Scale pattern
for absolute PD

1.35mm・・・
Scale pattern alea

Scale pattern
for incremental PD

7mm
1.35mm・・・

Material: PET
Thickness: 0.22mm (including adhesive tape)Non-reflection area
(Reflectance6%)

Reflection area
(Reflectance60%)◆Note that if the encoder IC is moved beyond the valid range of the absolute pattern, theamplitude of the incremental signal will decrease.

Evaluation tools for Encoder IC
EVTE240010-E001 2024.03

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