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# Set up SDI/ASI cards

ASI/SDI cards can be configured for different modes of operation. For example, if there are two 4-port ASI/SDI cards in the same chassis, one card can be configured for SDI/ASI output and the other card for HD or UHD SDI input.

## Set up a 4-port SDI/ASI card

The following three modes are supported.

#### 4 ASI/HD-SDI/SD-SDI

* 4 independent 3G-SDI/ASI ports. Each port can be either SDI or ASI, input or output.

Use this mode for 4 independent SDI/ASI ports, each of which can be an input or an output.

#### 1 UHD 12G or Quad Link 3G

* Port 1 SDI input/output (up to UHD 12G-SDI) or ASI input/output, or

* Ports 1-4 SDI input/output for Interleaved mode for UHD.

For contribution or headend use cases, use this mode for UHD SDI input.
For reception use cases, use this mode for UHD SDI output.

#### 1 UHD 12G with downconversion

This mode is not recommended for contribution or headend use cases.
For reception use cases, use this mode for UHD SDI output with downconversion.

## Set up an 8-port SDI/ASI card

The following three modes are supported.

#### 8 ASI/HD-SDI/SD-SDI

* 8 independent 3G-SDI/ASI ports. Each port can be either SDI or ASI, input or output.

Use this mode for 8 independent SDI/ASI ports, each of which can be an input or an output.

#### Dual 4K channels over 12G-SDI or Quad link

* Port 1 SDI input/output (up to UHD 12G-SDI) or ASI input/output, or

* Ports 1-4 SDI input/output in Interleaved mode for UHD.

* Port 5 SDI input/output (up to UHD 12G-SDI) or ASI input/output, or

* Ports 5-8 SDI input/output in Interleaved mode for UHD.

For contribution or headend use cases, use this mode for UHD SDI input.
For reception use cases, use this mode for UHD SDI output.

#### Dual 12G-SDI with ASI/SDI side channel

This mode is not recommended for contribution or headend use cases.
For reception use cases, use this mode for UHD SDI output with ASI/SDI output side channel.

## To set the mode of operation of an SDI/ASI card

* From the MK.IO Beam web UI, select the Appliance tab.

* Select the ASI/SDI interface tab.

* Select the Slot tab corresponding to the SDI/ASI card. If more than one card is present, there will be a separate slot tab for each card.

* Select the ASI/SDI mode from the drop-down menu.