RPM6900 查看數據表（PDF） - ROHM Semiconductor

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RPM6900

IR Receiver Module

ROHM Semiconductor 

Photo Link Module

RPM6900 series

(2) Standard transmitter

λ peak=940nm

λ ∆=40nm

Lo=20cm

Signal scale

io=5µAp-p

i

Carrier frequency fo

Brachy morphic wave duty50%

io

Standard transmitter

A

io

ON

OFF

10kΩ

t

Standard photo-diode

RPM-301B

600µs 600µs

Fig.2 Measurement of standard transmitter proofreading

Fig.3 Standard photo diode current

When standard transmitter output the signal at Fig.1 standard photodiode output become io=5µAp-p (Fig.3) under the

measurement condition Fig.2.

(The radiant intensity of standard transmitter : 50mW / sr)

RPM-301B : standard photodiode has short current Isc=27µA at E=1000(lx)

(using CIE standard light source A)

(3) Measurement effective distance, horizontal & vertical half angle

Standard transmitter

RPM6900 series

θ

θ

Light detector face

illuminance : Ee

Effective distance : L

(θ ; Indicates horizontal and vertical directions)

Fig.4 Measurement condition for effective distance

Effective distance L

: Effective distance at θ=0° Fig.4

Horizontal & vertical half angle θ : The angle which effective distance became 50% of L.

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