Dalsa Genie HC1024, Руководство пользователя

Страница: 111 / 141

Genie HM-HC Series-GigE Vision Camera Technical Specifications

109
Genie Signal Electrical Details

Power Supply (pin 2) : +12V DC nominal at 0.6 Amp minimum.
Operating tolerance: see Camera Performance Specifications
Over voltage and reverse voltage protection circuit built in. The protection circuit is reset by shutting down or
disconnecting the power supply.

The 12-pin Hirose male connector shell and cable shield should connect to the supply earth ground to improve
EMI and ESD shielding.
External Inputs

Opto-coupled (2V to 12V, 2mA minimum) with internal current limit.

RS422 or TTL signal type (see figures below).

24 Volt signals supported with additional external current limiting (see figure below).

Used as trigger or integration control.

External signal polarity selected via configuration parameter.

User programmable debounce time from 1 to 255µs.

See " Input Controls via Sapera LT or GigE Vision Compliant Applications " on page 55 .
The opto-coupler is typically a Fairchild HMHA281 with the following characteristics.
Input Electrical Parameter Description Value
Voltage threshold to turn OFF 0.8 V
Voltage threshold to turn ON 2 V
Minimum input current to turn ON 2 mA
Maximum input current 50 mA
Minimum input pulse width to turn ON 30 to 90µs typical dependent on input voltage
Output rise time (typical) 10 µs
Output fall time (typical) 50 µs
Maximum input voltage 13 V
Maximum reverse voltage - 6 V
Note: The minimum input pulse width to turn ON can be slightly longer depending on the actual input voltage.