Carrier 23XL User Manual download pdf (Page 17)

Hex Table

8 Hex Table

Table 5 lists the Hex values (which the protocol in section 9 describes in

more detail) for the VP-23xl 4x1 Presentation Switcher:

Table 5: VP-23xl Hex Table

Inputs

Group #

Composite Video OUT and

Audio OUT CV

s-Video OUT and Audio

OUT s-Video

VGA OUT and Audio OUT

VGA

In 1 01 81 81 81

In 2 01 82 81 81

In 3 01 83 81 81

Composite

Video

In 4 01 84 81 81

In 1 01 81 82 81

In 2 01 82 82 81

In 3 01 83 82 81

s-Video

In 4 01 84 82 81

In 1 01 81 83 81

In 2 01 82 83 81

In 3 01 83 83 81

VGA

In 4 01 84 83 81

Master Audio Selector (Group Audio OUT) Audio Master OUT

Composite Video Audio OUT 02 81 81 81

s-Video Audio OUT 02 82 81 81

VGA Audio OUT 02 83 81 81

Microphone 02 84 81 81

Disconnect All 02 80 81 81

9 Communication Protocol

This protocol, which enables RS-232 communication between the VP-23xl

and the PC, uses 4 bytes of information, and data is at 9600 baud, no parity, 8

data bits and 1 stop bit.

Table 6: Protocol Definitions

MSB LSB

DESTINATION

INSTRUCTION

0 D N5 N4 N3 N2 N1 N0

7 6 5 4 3 2 1 0

1st byte

INPUT

1 0 0 0 0 I2 I1 I0

7 6 5 4 3 2 1 0

2nd byte

OUTPUT

1 0 0 0 0 0 O1 O0

7 6 5 4 3 2 1 0

3rd byte

MACHINE NUMBER

1 0 0 0 M3 M2 M1 M0

7 6 5 4 3 2 1 0

4th byte

1 2 ... 12 13 14 15 16 17 18 19 20 21

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