This Appendix presents technical information about the SGI Onyx4 G2-bricks and G2N-bricks.
The SGI Onyx4 system can support analog or digital monitors with a broad range of resolutions and refresh rates. The video modes supported by default include those listed in Table B-1. Numerous additional formats may be entered into the “Monitor” sections of the /etc/X11/XF86Config-4 file.
Table B-1. Video Modes Supported by Default on SGI Onyx4 Pipes
Resolution | Refresh Rates |
|---|---|
1024x768 | 60 Hz |
1280x1024 | 60 Hz |
1280x1024 | 96 Hz (stereo) |
1600x1200 | 60 Hz |
1920x1080 | 72 Hz |
1920x1200 | 60 Hz |
 | Note: Each graphics card has two DVI-I ports. However, on some cards the second DVI-I port (channel 2, on the right) may only be connected to an analog display. For more information, see “Using Both DVI Channels on a Card” in Chapter 3. |
This section lists the technical specifications for the G2-bricks and G2N-bricks.
Table B-2. G2-brick and G2N-brick Technical Specifications
| G2-brick | G2N-brick |
|---|---|---|
|
| |
Form-factor | 19-inch rack mount | 19-inch rack mount |
30 lb. (13.6 kg) | 35 lb. (15.9 kg) | |
90VAC-132VAC or 180VAC-264VAC | 90VAC-132VAC or 180VAC-264VAC | |
50Hz-60Hz | 50Hz-60Hz | |
150 watts maximum | 350 watts maximum | |
20 amps (per power supply) | 20 amps (per power supply) | |
512 Btu/hour maximum | 1194 Btu/hour maximum | |
+41 to +95 °F (+5 to +35 °C) <5,000 ft | +41 to +95 °F (+5 to +35 °C) <5,000 ft | |
-40 to +140 °F (-40 to +60 °C) | -40 to +140 °F (-40 to +60 °C) | |
6 bel (idle), 41-86 °F (5-30 °C) <5,000 ft | 6 bel (idle), 41-86 °F (5-30 °C) <5,000 ft | |
Operating: 0-10,000 ft (0-3,048 m) | Operating: 0-10,000 ft (0-3,048 m) | |
10% to 95% RH, noncondensing | 10% to 95% RH, noncondensing |
This section describes the various connectors found on an SGI Onyx4 G2 or G2N brick. For details of connectors found on the host system, or on other bricks, see the documentation that came with the host system or with those other bricks.
Figure B-1 shows the DB9 serial port connector pin assignments. This connector is used for the console and diagnostic port of the G2-brick and G2N-brick, and enables you to connect a system console to the L1 controller on the graphics brick.
 | Caution: Although the image sync subsystem also uses DB9 connectors, these connectors, whether on the ImageSync card or on the G2 and G2N bricks, are not serial ports. Connecting a serial device to these connectors may cause damage to both the ImageSync devices and the serial devices. |
Figure B-2 shows the USB type B connector that is used for the L1 USB port of the G2-bricks and G2N-bricks. Table B-3 lists the pin assignments.
Table B-3. USB Type B Connector Pin Assignments
Pin | Signal | Color |
|---|---|---|
1 | VCC | Red |
2 | -Data | White |
3 | +Data | Green |
4 | Ground | Black |
The DVI-I connectors on each graphics card incorporate both digital and analog signals. Figure B-3 shows the pin numbers and Table B-4 shows the signals.
Table B-4. DVI-I Connector Signals
Pin | Function | Pin | Function |
|---|---|---|---|
1 | T.M.D.S.[a] Data 2- | 16 | Hot Plug Detect |
2 | T.M.D.S. Data 2+ | 17 | T.M.D.S. Data 0- |
3 | T.M.D.S. Data 2/4 Shield | 18 | T.M.D.S. Data 0+ |
4 | T.M.D.S. Data 4- | 19 | T.M.D.S. Data 0/5 Shield |
5 | T.M.D.S. Data 4+ | 20 | T.M.D.S. Data 5- |
6 | DDC Clock | 21 | T.M.D.S. Data 5+ |
7 | DDC Data | 22 | T.M.D.S. Clock Shield |
8 | Analog Vertical Sync | 23 | T.M.D.S. Clock+ |
9 | T.M.D.S. Data 1- | 24 | T.M.D.S. Clock- |
10 | T.M.D.S. Data 1+ |
|
|
11 | T.M.D.S Data 1/3 Shield | C1 | Analog Red Video Out |
12 | T.M.D.S. Data 3- | C2 | Analog Green Video Out |
13 | T.M.D.S. Data 3+ | C3 | Analog Blue Video Out |
14 | +5V Power | C4 | Analog Horizontal Sync |
15 | Ground (for +5V) | C5 | Analog Common Ground |
[a] Transition Minimized Differential Signaling | |||
Figure B-4 shows the stereo-sync connector on the Onyx4 graphics board. Table B-5 lists the pin assignments.
Table B-5. Stereo-Sync Connector Pin Assignments
Pin | Signal |
|---|---|
1 | +12V DC output to stereo device |
2 | Ground |
3 | Stereo left/right eye signal (1=left, 0=right) (STEREO_LEFT) |
Figure B-5 shows the SwapReady connector on the ImageSync card. Table B-6 lists the pin assignments.
Table B-6. SwapReady Connector Pin Assignments
Pin | Signal |
|---|---|
1 | Swapbuffer gang sync open collector I/O |
2 | Signal return ground |
Figure B-6 shows the Genlock connector on the ImageSync card. Table B-7 lists the pin assignments.
Table B-7. Genlock Connector Pin Assignments
Pin | Signal |
|---|---|
1 | Genlock in |
2 | Genlock return (signal ground) |