Kramer Electronics VS-1616SDI user manual Illustrates the RS-485 line that connects

Installing the SDI Video Matrix Switcher

6.4.2Connecting the RS-485 Control Interface

Figure 8 defines the RS-485 connector PINOUT for external RS-485 control. The RS-485 connector is also used (if required) for vertical sync:

Figure 8: RS-485 Connector PINOUT

To connect an RS-485 connector on a VS-1616SDIunit to an RS-485 connector on one or more other switchers (from the series of 16x16 matrix switchers), as Figure 9 illustrates:

1.Connect the “+” PIN on the VS-1616SDIunit to the “+” PIN on the other 16x16 matrix switcher unit

2.Connect the “-” PIN on the VS-1616SDIunit to the “-” PIN on other 16x16 matrix switcher unit

3.If shielded cable is used for an RS-485 connection, connect the shield to the Ground PIN.

For details about how to configure the vertical sync (if required), refer to section 6￿ .5 and Figure 14.

Figure 9: Connecting the RS-485 Connectors

Figure 10 illustrates the RS-485 line that connects:

￿Between the VS-1616V,VS-1616A,VS-1616SDI, and VS-1616AD switchers

15