Extron electronic RGB 201 Rxi manual Installation and Operation, cont’d, Sync polarity jumpers

Installation and Operation, cont’d

J9 H Sync

J20 V Sync

J21 Enable

Sync

J23

ON	SW2
1 2
1	Blue

1Red

J28	J11	1
		2
		3

J22

RS-232 1

Connector

Figure 2-2 — Location of jumpers and DIP switches

Sync polarity jumpers

The interface is factory configured for the output sync to follow the input sync. To force positive or negative sync, reconfigure the jumper as follows:

1. Locate J9, J20, and J21 on the printed circuit board.

2. For sync follow (output sync polarity identical to the input sync), ensure that the jumper is removed from jumper block J21.

3. For positive or negative sync, ensure that a jumper is installed in jumper block J21 and configure J9 and J20 as follows:

a. Horizontal sync —

For positive sync, install a jumper in block J9.

For negative sync, remove the jumper from block J9.

b. Vertical sync —

For positive sync, install a jumper in block J20.

For negative sync, remove the jumper from block J20.

2-4 RGB 201 Rxi Universal Interface • Installation and Operation