Verint Nextiva S1700e Series Guía de usuario descargar pdf (Pagina 29)

Nextiva S1700e Series User Guide

Verint Video Solutions 17

The numbering of the pins on the DB-9 connector is:

RS-422/485

Most target devices (keyboards, PTZ cameras) use the

RS-422/485 protocol for communication. These devices are

categorized DTE (data terminal equipment); for more

information about DTE and DCE (data communication

equipment), see Appendix B on page 49.

To use the RS-422/485 functionality, you need to:

1. Connect a twisted pair cable to the multipole connector on

the back of the device. The connector gives access to the

Tx+, Tx-, Rx+, Rx-, and ground signals.

2. Select the right operating mode (RS-422 4 wires, RS-485

2 wires, or RS-485 4 wires) using SConfigurator, the web

interface, or a video management software.

To properly make the connection to a four-wire RS-422 or

RS-485 serial device, use the following scheme (where the Tx

connectors are for input and the Rx connectors are for output):

For a two-wire RS-485 connection with a Nextiva device:

1. Create the Data- signal by shorting the Rx- and Tx- pins

together.

2. Create the Data+ signal by shorting the Rx+ and Tx+ pins

together.

Peripheral connector S1700e connector

Tx+ Tx+

Tx- Tx-

Rx+ Rx+

Rx- Rx-

ground ground

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Verint Nextiva S1700e Series Guía de usuario Pagina 29