# dscDASetSim

```c
BYTE dscDASetSim(DSCB board, BOOL sim);
```

This function configures the board for simultaneous update or regular single-channel update mode. Updating a DAC may be done in either single-channel mode or simultaneous update mode.

{% tabs %}
{% tab title=" Input Parameters" %}

| **Name**      | **Description**                                              |
| ------------- | ------------------------------------------------------------ |
| DSCB          | The handle of the board to operate on                        |
| sim           | 0 = single-channel update mode, 1 = simultaneous update mode |
| {% endtab %}  |                                                              |
| {% endtabs %} |                                                              |

| Return Value     |
| ---------------- |
| Error code or 0. |