Viz Engine Administrator Guide

Version 4.2 | Published December 04, 2020 ©

EVS Video Server Control

An EVS Control Plug-in lets the Viz Engine control an EVS video server (like a tape deck over RS422). This gives Viz Engine the ability to load and control playback of EVS video server clips.

This section contains information on the following topics:

Setup Requirements

  • The computer which runs the Viz Engine must be equipped with an RS422 controller that maps the controller ports to the Windows COM ports.

  • The RS422 port must be connected to an RS422 remote controller port of the EVS video server.

  • The EVS player, controlled by the RS422 port, must be set up to use the protocol XtenDD35 (No other protocol is currently supported).

RS422 and XtenDD35 Configuration

  1. You need a RS422 controller that installs the RS422 port as a new COM port in Windows.

  2. Set up the XtenDD35 protocol on the used remote port of the EVS video server.

    IMPORTANT! This must be done before an attempt to connect.

  3. Manually set the Windows COM port settings to:

    • 38400 baud

    • 8 bytes

    • one stop bit

    • odd parity

      IMPORTANT! This must be set before Viz Artist is started.

  4. Usually, a special RS422 cable is required to connect the controller to the EVS video server. It is recommended to use a connector cable to connect the RS422/DB9 connector to a standard RS422 cable. The RS422 cable should work with a normal EVS video server controller.

  5. Every RS422 controller has a different pin-out setting and requires a different connector cable. The table below shows which signal of the RS422 controller must be connected to which pin on the EVS side:

RS422 Pin-out for the Connector Cable

Signal type of RS422 controller

Cable pin on EVS side

RxD B+ (in)

7

TxD B+ (out)

3

TxD A- (out)

8

RxD A- (in)

2

Sig Ref / Gnd

1

RS422 Controller Set Up Examples

The connection of a RS422 controller to the EVS is always different for each controller. Here are two examples:

Bluestorm LP PCI Card Configuration

Viz Engine side (Bluestorm LP card)

EVS side

Signal type

Pin

Pin

Signal type

TxD+

2

3

RxD+

TxD-

3

8

RxD-

RxD-

4

2

TxD-

RxD+

1

7

TxD+

Sig Ref

5

1

Sig Ref

ExSys EX-1303 USB to RS422 Connector Configuration

Viz Engine side (ExSys EX-1303)

EVS side

Signal type

Pin

Pin

Signal type

TxD+

2

3

RxD+

TxD-

1

8

RxD-

RxD-

4

2

TxD-

RxD+

3

7

TxD+

Sig Ref

5

1

Sig Ref