Itala | INSTRUCTION MANUAL
CAUTION: Please be careful not to exceed the maximum voltage specification of the
opto-isolated input pins.
As mentioned in Section 5.2, +V
CC
must not exceed 30V.
When Itala camera is triggered by an external logic pin (e.g. TTL), the output pin can still be wired
to the opto-isolated input pin of the camera: in this case the logic output pin must be capable of
triggering the opto-isolated input stage, i.e. the high logic level must be greater than the threshold
voltage of the opto-coupler (see Section 5.2).
Morevoer, the output pin must have a suitable drive strenght in order to toggle the opto-isolated
input stage.
7.1.2 Synchronizing an external device with Itala cameras
When Itala camera is used to trigger external devices, suitable connections must be performed.
Considering the circuitry of the opto-isolated output pin (Section 5.7), possible connections are the
depicted in Figure 76.
When Itala camera triggers an external opto-isolated device, the output pin of the camera can be
directly wired to the input pin of the triggered device.
In this case the output stage acts as a switch: when the synchronization signal is generated, the
switch closes and the external power supply (+V
CC
) is delivered to the external device, toggling
the actual state and therefore triggering the device.
CAUTION: Please be careful not to exceed the maximum voltage specification of the
opto-isolated input pins.
As mentioned in Section 5.2, +V
CC
must not exceed 30V.
On the opposite, when Itala camera triggers an external logic pin (e.g. TTL), the output pin can still
be wired to the opto-isolated input pin of the camera with some cautions: an external resistor is
required in order to tie the input pin to ground when the opto-isolated output is not active.
CAUTION: Please be careful not to exceed the maximum voltage specification of the
opto-isolated input pins.
As mentioned in Section 5.2, +V
CC
must not exceed 30V.
CAUTION: Always check the compatibility between +V
CC
and the logic pin maxi-
mum voltage ratings.
v1.12 - eng 114
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