---
title: "IO Analyzer"
slug: "io-analyzer"
updated: 2024-01-13T13:18:49Z
published: 2024-01-13T13:18:49Z
canonical: "docs-linescan.alliedvision.com/io-analyzer"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs-linescan.alliedvision.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IO Analyzer

The IO Analyzer allows you to sample the IO input signal of the camera. In a case where you have problems with the input signal, for example with the frame trigger, you can use the IO Analyzer to scan the signals.

## Setup and scan the IO Analyzer

| 1. Connect the IO's of the camera. 2. Start the camera and open GCT. |  |
| --- | --- |
| 1. Navigate to *Digital IO Control, IO Analyzer* . |  |
| 1. Set the Trigger Activation to **Auto** (default). 2. Select the Input Source. | ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image-1697461615175.png) |
| 1. To start the sampling, enable the external **Input Source**,in this example, it is Line1 which is in the Encoder mode. 2. Press the **Execute** button of the Start sampling. 3. After a few seconds you can stop the sampling by clicking the **Execute** button of the Stop sampling. |  |

## Read out the IO Analyzer data

The data of the *IO Analyzer* are stored in the camera and can be read out via the *Up/Download* dialog.

| 1. Navigate to *Tool* and click **Up-/Download**. |  |
| --- | --- |
| 1. In the area *Download: Device ---> PC,* select in the drop-down menu the **IO Analyzer Event File** and press **Download to**. | ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image-1697462160387.png) |
| 1. Store the file on your PC, use a .*csv* suffix. |  |

## Analyze the IO Analyzer data

The output of the *IO Analyzer is a CSV* file. You can either read in Excel or you can use the following Python script.

The Output of the Python script is a Plot with the signals and the calculated mean frequency.

![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image-1697464697321.png)Output of the Python script 

```shell
DisplayIOAnalyzerEvent.py -f YOUR_PATH\pathLog.csv

DisplayIOAnalyzerEvent.py -h
usage: DisplayIOAnalyzerEvent.py [-h] [-f F] [-s S] [-e E]

optional arguments:
  -h, --help  show this help message and exit
  -f F        -f This is the path to the io analyzer event file to display(Mandatory)
  -s S        -s This is the start time of the plot in us(Optional)
  -e E        -e This is the end time of the plot in us(Optional)
```

[DisplayIOAnalyzerEvent.py](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/DisplayIOAnalyzerEvent.py)