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Power up mode, Connecting rs-422 signals to the brs-0808 – Grass Valley TTN-BRS-0808 User Manual

Page 16

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BRS-0808

Rev. 2


8

5.3.

Power up mode

Switch 8 on the configuration switch defines the power up mode. The BRS-0808 router provides two
modes for powering up the system.

Mode 1 makes hard reset.
Mode 2 switches all outputs according to the buffered information in the routers processor system.

The power up mode can be switched according to the following pattern:

-

means switch down

*

means switch up


Switch

8

Power Up Reset


-

Mode 2

*

Mode 1


Default is Mode 2.


6. Connecting RS-422 signals to the BRS-0808

All ports (sources and destinations) on the BRS-0808 are coupled in accordance to the SMPTE-207M
standard. All RS-422 connectors used on the router are female types DB9.

Sources (Controlling)
These are intended for direct (one-to-one) connections to Controlling equipment, and they are therefore
assigned according to SMPTE207M Tributary:

Pin

3:

RX+

Pin

8:

RX-

Pin

4,6: GND

Pin

2:

TX-

Pin

7:

TX+


Destinations (Controlled)
These are intended for direct (one-to-one) connections to Controlled equipment, and they are therefore
assigned according to SMPTE207M Bus Controller:

Pin

7:

RX+

Pin

2:

RX-

Pin

4,6: GND

Pin

8:

TX-

Pin

3:

TX+