epc111/112

Light Reserve Output OUTH

However, if the incoming signal is just at the trigger threshold of OUTN, an unstable situation can occur. Thus, a second output OUTH is

integrated with a higher trigger threshold to indicate that a certain 'light reserve' is reached (see Figure 3). This output is usually used to drive

a visible LED to indicate to the operator a stable detection function of the light barrier. To have not too short pulses OUTH, this signal is

stimulated by signal OUTH Filter and synchronously reset by OUTN.

The trigger threshold of OUTH is set approx. 50% above the trigger threshold of OUTN.

OUTN Filter

OUTH Filter

OUTN

OUTH

Emitter LED

Figure 5: synchronization OUTH with OUTN

This output is not CMOS compatible. Its voltage is depending of the load according to Figure 6. To have still digital compatible signals a level

conversion is necessary.

File: Unbenannt

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.

OUTH low min.: 3.0V / + 85ºC

OUTH low max.: 3.6V / - 40ºC

OUTH low typ.

OUTH high max.

Voltage OUTH [V]

Figure 6: Output voltage versus output current of output OUTH

© 2011 ESPROS Photonics Corporation

Characteristics subject to change without notice

7

Datasheet epc111_112 - V2.2

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