Operation – Rose Electronics CrystalView DVI Quad User Manual

Page 30

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OPERATION

CRYSTALVIEW DVI QUAD INSTALLATION AND OPERATIONS MANUAL

26

Operation

USB HID (keyboard and mouse)

Extenders with USB HID connectors support ONLY keyboard and mouse. It is possible that other Human

Interface Devices (e.g. touchscreens, graphics tablets, barcode readers) will work correctly, but it is not

guaranteed. Non-HID devices such as scanners, printers, cameras and flash memory sticks will not work with

the USB HID ports of the CrystalView DVI Quad Extender. The Extender supports two USB HID devices at a

time, such as keyboard and mouse or keyboard and touchscreen, but not keyboard and mouse and

touchscreen at the same time. A USB Hub can used, but it will not increase the number of HID devices

simultaneously supported to more than two.

The DDC, Next frame switching, and color selection on the CrystalView DVI Quad are factory set to values that

satisfy most applications. These default settings can be modified, if needed, to the following:

Default settings

DDC Information – Use the internal DDC table.

Color selection – Automatically switch between 16 Bit and 24 Bit

Next frame switching – Switch to a new frame during Hsync period

DDC manual settings

The DDC information supplied to the CPU can be set to:

1.

The Transmitter unit’s internal DDC table (default)

2.

The DDC information obtained from a monitor locally connected to the transmitter unit

3.

The DDC information obtained from a monitor connected to the receiver unit

To modify the source of the DDC information, jumper JP1 and/or JP2 need to be re-positioned to designate the

DDC source as shown in Table 2. To change the jumper settings, first remove power from the Transmitter

unit. Next, remove the screws on the bottom and sides of the Transmitter chassis and carefully remove the top

of the chassis exposing the circuit boards. Locate the jumpers JP1 and JP2 as shown in figure 8.

Note: The four circuit boards each have JP1 and JP2 jumpers that can be changed.

JP1 / JP2 / JP3

Figure 8. Jumper Settings (Transmitter unit)

DDC Source

JP1

JP2

From Internal DDC Table (default setting)

From Local Monitor

From Remote Monitor

Table 2. DDC Source Settings

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