VA6834FC Description

INTERFACES

The VA6834FC has two key functions. Its first function is to buffer the signal and insure that it is strong enough to travel a distance of 100 ft or longer through a coaxial cable. The second function is to process the sync and to convert it into a format that is acceptable to most displays.

4.1COMPUTER VIDEO INPUT (VGA- COMPATIBLE HD 15-PIN CONNECTOR).

The HD 15-pin connector input allows the connection of a computer source to the interface using Altinex input cables, which are available for a variety of popular computers and graphics cards on the market. These include VGA, MAC, SUN, and SGI type video output connectors with the proper cables. The VA6834FC input is compatible with standard VGA cables.

PIN	INPUT SIGNALS ON HD 15-PIN FEMALE
No.	CONNECTOR

1Red Video

2Green Video

3Blue Video

4ID Bit (Grounded when ID Bit switch is ON)

5Ground

6Ground

7Ground

8Ground

9No connection

10No connection

11ID Bit

12ID Bit

13Horizontal Sync/Composite Sync

14Vertical Sync

15No connection

Table 4. VA6834FC Input pin-out

4.2LOCAL MONITOR OUTPUT (HD 15-PIN CONNECTOR)

The HD 15-Pin connector output is used to connect the local monitor to the interface. This is a fully buffered output, eliminating reflections often caused by “Y” type monitor breakout cables. There is no need to terminate the unused output. The termination switch on the VA6834FC affects only the terminations of the computer video input. The output is VGA compatible, but can also be used to feed other

types of local monitors using designated Altinex adapter cables such as VGA, MAC, SUN, SGI or RGB.

PIN	LOCAL MONITOR OUTPUT SIGNALS ON
No.	15-PIN HD FEMALE CONNECTOR

1Red Video

2Green Video

3Blue Video

4ID Bit (Grounded when ID Bit switch is ON)

5Ground

6Ground

7Ground

8Ground

9Composite Sync

10No connection

11ID Bit

12ID Bit

13Horizontal Sync

14Vertical Sync

15No connection

Table 5. Local Monitor Output pin-out

4.3 MAIN (RGBS/RGBHV) OUTPUTS THROUGH

6 BNC CONNECTORS

BNC connectors offer a reliable connection for high-resolution video signals, and they facilitate easy cable maintenance in the field. The VA6834FC offers two main outputs with six BNC connectors for each output. By selecting the appropriate connectors, these outputs can provide RGSB, RGBHV, or RGBS output signals.

For a RGsB type signal the “Sync on Green” dip switch must be set to the ON position.

For an RGBHV type signal, you may either connect cables to horizontal or vertical BNC connectors or you may connect the horizontal channel to the composite sync connector by turning the HV OUTPUT switch to the ON position. For a RGBS type signal output, the cables should be connected to a composite sync signal. With these connectors the VA6834FC can be connected to compatible data projectors using 3 coax, 4 coax, or 5 coax cables.