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60 Spyder3 GigE Vision SG-14 Monochrome Cameras User’s Manual

03-032-20123-01 Teledyne DALSA

Appendix C: GPIO Control

The camera’s General Purpose Input / Output (GPIO) connector allows the camera to receive (and in

some cases output) direct, real-time control signals that are independent from the Ethernet

communications. For example, the GPIO connector can be used to control EXSYNC, PRIN (pixel reset),

and direction signals.

You may want to use non-Ethernet control signals because Ethernet network protocols introduce a small

but measurable and unpredictable lag that may not allow for extremely precise and reliable control of

camera behavior, such as line rate, integration time, and readout direction.

In general, to configure the GPIO you need to accomplish three main tasks:

1. Assign a physical camera pin and signal to a GPIO Input number.

2. Map the GPIO Input or Output using the parameter commands located in the Line Trigger

Function, Inputs, Outputs, Direction Control, and Sensor Control groups in the GUI. (Please note

that this step has already been performed for the Beginner level scenarios described below.)

3. If you want to use applications other than those provided in the Beginner level examples, you can

use the LUT programming language to map the GPIO Input Configuration to the GPIO Output

Configuration in the Guru level.

Note: the screenshots presented in this section are from the CamExpert GUI. If you are using a different

GUI the arrangement of the commands and parameters may be different.

GPIO Getting Started: Beginner Mode

NOTE: The following instructions are based on the default settings of the camera. Cameras are shipped

from the factory in a default setting. Default settings are restored by loading the factory default (see

Trigger Settings (GURU) for details).

The GPIO Connector

The GPIO connector is used to interface external signals in and out of the camera . The connector contains

15 pins that can configure 4 inputs and 4 outputs (See Figure 1 and Table 1). Three of the four

inputs/ outputs (i.e. 0 to 2) can be configured as Off, LVDS (Low Voltage Differential Signal), or TTL

(Transistor/ Transistor Logic). The remaining input and output (i.e. 3), can be configured as either Off or

TTL.

Figure 31: GPIO Pinout

Signal

Description

INPUT_ 0+

LVDS/ TTL format (positive)

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 103 104

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