> For the complete documentation index, see [llms.txt](https://docs.coraye.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coraye.com/chart-control.md).

# Chart control

The control of a large charter can be useful in the following cases:

* More in-depth quality control of your prints
* Verification of charters intended for the creation of a profile to characterize an offset machine.

### Importing the Print Control file

To check a large chart, it is first necessary to import the Print Control file created previously in the chapter "Creating a reference from a printed chart":

{% content-ref url="/pages/-MHgZz5LlJZ6rraoVhk8" %}
[Create a reference from a printed chart](/quality-control/untitled-1.md)
{% endcontent-ref %}

Then select the Print Control file and right click to select the "Start Control" option.

![](/files/-MIK5li0WOK9Q1FlTufe)

The chart used when creating the Print Control file is displayed. It is possible, at this stage, to modify the pattern format in order to print it.

![](/files/-MIK5paItqx33VJHBKr3)

### Printing of the charter

If the chart is not already printed, export it in Tiff or Pdf format to print it.

![](/files/-MIKZEh4WQsFLwsH9eHM)

### Charter measurement

Once the chart (s) has been printed, let them rest before starting to read. \
To start the measurements, click on the "**Start reading**" button

![](/files/-MIK5tRhLbw1xWviaEms)

Select the reading and calibration mode, then click on "**I'm ready**"

![](/files/-MIK5woguVXys_tJzk8C)

Position the spectrophotometer in its calibration position

![](/files/-MBmacetMFAnXH6pkv2I)

Then click on the "**Start calibration**" button

![](/files/-MIK6-2vTDumNOYKMG7J)

### Multiple measurements

At this step, it is possible to define the number of measurements carried out per line by clicking on the "+ reading" button \
This in order to detect reading errors or to average the measurements for greater precision.

![](/files/-MIK62En4rSitpIUihzP)

At the invitation of Coraye, start reading the chart.

![](/files/-MIK6UK4iu0lcI2GHcBm)

Measure the line framed by the 2 blue cursors

![](/files/-MIK6D8MWsM7YtRsPVsn)

Hovering over the measured patches will show you the values of Delta E, H and Ch

![](/files/-MIK6FiWx7Uf_saTDa29)

When the staff is completely measured, click on the "**Reading done**" button.

![](/files/-MIK6J60sMa3WCqd3VqF)

### Viewing Reading Report

![](/files/-MIK6MK9hFd1rnJm3rid)