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360C Ultra Miniature Rotating Optical Chopper

360H + 350D2Features

 Scitec Instruments Model 360 optical chopper system consists of a chopper head, drive board, photochemically etched discs and an interconnecting cable. This optical chopper uses 30mm diameter discs. The drive board and chopping head have been designed to be as compact as possible. The small size of the chopping head allows positioning in areas where space is critical. As the system is designed for OEM use, each component is available separately.

10 Hz - 14,000 Hz standard chopping frequency range

30 mm diameter discs

Photochemically etched non-magnetic discs

Ultra compact chopper head

Small size drive board

Low cost, for OEM applications

Specifications

360H Chopping Head

Motor: 5 pole DC motor, sleeve bearings with 1000 hours lifetime, 0-15000 rpm reversible.

Reference pick-up: IR led and phototransistor pair with Schmitt trigger.

Dimensions: 43(H) x 30(L) x 14(W) mm without blade. Dimensions: 50(H) x 30(L) x 30(W) mm with blade.

Mounting: Two 3 mm holes near base.

360 Chopper Head - No Disc

360C OEM Drive Board

Input Voltage: 7V to 15V DC or 9V to 18V AC

Frequency Control: On board trim, external potentiometer or external voltage

Frequency Stability: Short term - see phase jitter. Long term - ±1% of max frequency within 10 to 100% of maximum frequency.

Reference output: 5 V HCT TTL signal via jack socket.

Power Requirement: 60mA no load, 80mA max speed

Dimensions: 43 x 73 mm

Weight: 25 g

Chopper Drive Board

350D Set of Chopping Discs

Disc types: 2, 4, 10 and 40 slot
(20 and 80 slot discs are also available)

Material: Half hard brass, 0.3 mm thick

Diameter: 30 mm

Surface Finish: Chemically blacked

Mark to Space Ratio: 1 to 1


r, a, b & d aperturesFrequency Range:

Disc

Frequency (Hz)

Aperture (mm)

Phase Jitter, Max

r

a

b

d

350D2
(2 slots)

10 - 350

9.0

23.6

9.4

9.0

TBA

350D4
(4 slots)

20 - 700

9.0

11.8

4.7

8.3

TBA

350D10
(10 slots)

50 - 1750

8.0

4.4

1.9

3.7

TBA

350D20
(20 slots)

100 - 3500

8.0

2.2

0.94

2.0

TBA

350D40
(40 slots)

200 - 7000

8.0

1.1

0.47

1.0

TBA

350D80
(80 slots)

400 - 14,000

5.0

0.55

0.35

0.5

TBA

Ordering Information

The 360 system is available as separate components as most customers require only some of the following parts:

Model 360C OEM

- Drive board, chopping head, interconnecting lead and 2 discs (please specify when ordering).

360C OEM

- Drive board

360H

- Chopping head

360I

- Interconnecting lead, 1 m in length

350D2

- Two slot 30mm disc

350D4

- Four slot 30mm disc

350D10

- Ten slot 30mm disc

350D20

- Twenty slot 30mm disc

350D40

- Forty slot 30mm disc

350D80

- Eighty slot 30mm disc

350D

- Set of 4 discs (350D2, 350D4, 350D10 & 350D40)

Please note, a complete system also requires a wall mounted power supply which is available from many sources.

Useful Documents

pdf

360H Datasheet - pdf (136K)

pdf

360H Chopping head dimensions and wiring - pdf (13K)

pdf

360C OEM Drive board dimensions and wiring - pdf (19K)

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