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Chapter 2 • Installing the RGB 302/304
Preset Memory Blocks
No. Format
1
VGA1
2
VGA2
3
VGA3
4
VESA1
5
VESA2
6
VESA3
7
VESA4
8
VESA5
9
VESA6
10
Mac 13"
11
Mac 16"
12
Mac 21"
13
Sun1
14
Sun2
15
SGI
Power Supply
RS-232 Interface Specifications
RS-232
Extron RGB 302/304 Universal Interface • User's Manual
The Memory Cycling feature supports 25 user-defined
memory blocks for storing video configurations and 15
permanently defined memory blocks. The 15 preset
memory block video configurations are listed below.
Horizontal Frequency [kHz]
31.5
31.5
31.5
35.2
37.9
48.4
56.4
38.0
48.0
35.0
49.7
68.7
71.7
81.0
63.9
The RGB 302/304 is equipped with an internal auto-
switching power supply that operates from any input
voltage in the 100 to 240 VAC, 50/60 Hz range. No
equipment changes are necessary.
9600 baud, no parity, 8 data bits and 1 stop bit.
RS-232 Connector Pins are assigned as follows:
Pin Signal
1
—
2
Transmit
3
Receive
Vertical Frequency [Hz]
Pin Signal
4
—
5
Ground
6
—
70
70
60
56
72
60
70
60
72
67
75
75
76
76
60
Pin
Signal
7
—
8
—
9
—
Page 2-6
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