Extron electronic RGB 160 user manual Setting internal jumpers, Interface

Controls and Installation, cont’d

Setting internal jumpers

The jumpers inside the interfaces are set at the factory for optimal use by most systems. However, you can change a jumper setting to meet the needs of a particular system.

Changes to internal jumper settings must be performed by authorized service personnel only.

The user-configurable, internal jumpers control the following functions:

•Horizontal and vertical sync polarity

•Vertical sync pulse width

Follow these steps to change the jumper settings. The RGB 164xi is shown for illustration, but the steps apply to both interfaces.

1.	Remove power from the interface by disconnecting the AC
	power cord from the unit.
2.	Open the cover of the interface (the top half of the
	enclosure) as follows:
	a.	Remove the screws from the top cover of the
		enclosure (figure 2-14).
	b.	Remove the three screws that are in the Output 1
		BNC group.
	c.	Lift the cover straight up.

CAUTION	Do not touch any switches or electronic components
	inside the interface. Doing so could damage the
	interface.
	Slide cover back slightly,
	lift straight up.

Remove (5) screws.

Figure 2-14 — Opening the interface cover

3.	Note the positions of jumpers J20 and J40 before changing
	jumper settings. Figure 2-15 shows the locations of the J20
	and J40 jumpers and the two possible setting combinations
	for 3-pin jumpers.
	Pin 1 to 2	Pin 2 to 3

	Rear
	1
	J19
1
J20
1	J20: Sync polarity
J40	jumper
	J40: Vertical sync
	width jumper
	Power Supply
	Front

Figure 2-15 — Circuit board jumper locations

4.	Configure the jumpers as defined on the next page. To
	configure the jumpers, use pliers to pull the jumper shunt
	off the pins, then place the jumper on the appropriate pins
	(figure 2-16).

Figure 2-16 — Changing jumper settings

2-12 RGB 160xi and RGB 164xi • Controls and Installation RGB 160xi and 164xi • Controls and Installation 2-13