X64 Xcelera-HS PX8 User's Manual
Technical Specifications
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73
I/O Electrical Specifications
The electrical and timing specifications for all I/O signals are defined below. In general these
specifications are common across many Xcelera products but Teledyne DALSA reserves the right to
make changes without notice (assuming the change is backward compatible with previous Xcelera
installations).
Note 1: General Inputs Specifications
Each of the four General Inputs are opto-coupled and able to connect to differential signals (RS-
422) or single ended source signals. These inputs generate individual interrupts and are read by
the Sapera application. The following figure is typical for each Genera Input.
3v3
FB
FB
Gin +
650
110
4.7K
nGin
Gin -
1K
0.01uF
SW1
Figure 31: General Inputs Electrical Diagram
Input Details:
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For single ended signals, the Gin- pin is connected to ground. The switch point is ~10V by
default and can be change to ~2V with SW1.
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Each input has a ferrite bead plus a 650 ohm series resistor on the opto-coupler anode.
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The 1K resistor and 0.01uF capacitor provide high frequency noise filtering.
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Maximum input voltage is 26V.
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Maximum input signal frequency is 25 KHz.
Note 2: General Outputs Specifications
Each of the four General Outputs are opto-coupled. Each output is an isolated open-collector NPN
transistor switch. The following figure is typical for each General Output.
FB
680
Gout
Gout -
0.01uF
FB
Gout +
Figure 32: General Outputs Electrical Diagram
