Basler ace acA1920-155, Руководство пользователя, Страница: 77 / 326

AW00123404000 Physical Interface
Basler ace USB 3.0 67
5.9.3 Operation as an Output
This section describes the electrical operation of the GPIO line when the line has been set to
operate as an output.
5.9.3.1 Electrical Characteristics
Voltages

The following I/O supply voltage requirements apply to a direct-coupled GPIO line when it is
set as an output and when it is in the
" off " state:

The following applies to a direct-coupled GPIO line when it s set as an output:

The camera uses an open collector with only a weak internal pull-up resistor (approximately
2 k
Ω
). It is therefore likely that many applications will have to provide an additional pull-up
resistor.

When the direct-coupled GPIO line is in the "on" state, the residual voltage will typically be
approximately 0.4 V at 50 mA and 25 °C housing temperature. The actual residual voltage,
however, depends on camera operating temperature, load current, and production spread.
NOTICE
Voltage outside of the safe operating voltage range can cause damage.
You must supply power within the safe operating voltage range.
To ensure that the specified voltage levels for signals transmitted out of the
camera will be reached even under less than favorable conditions (e.g. for long
cable lengths, harsh EMI environment, etc.), we recommend to generally use an
external pull up resistor or to connect a "high side load".
Voltage Significance
+30.0 VDC Absolute maximum. The absolute maximum must never be exceeded. Otherwise,
the camera can be damaged and the warranty becomes void.
+3.3 to +24 VDC Safe operating direct-coupled GPIO output supply voltage range.
< +3.3 VDC The direct-coupled GPIO output can operate erratically.
Table 14: Voltage Requirements for a Direct-coupled GPIO Line Set as an Output