HMD Video Timings and Set-up Procedure
Video Timings
The HMD 120/40 runs at SXGA format (1280x1024 pixels @ 60Hz). It will accept analog or DVI inputs. The input connector required to plug into the electronics box is "DVI-Analog" as shown in the photo below:-
Adaptors are available to convert a normal VGA connector to this type.
It is important that the Image Generator timing is set up exactly to those specified below. Any variation in these could degrade the performance of the HMD or the the HMD may not work at all.
Field of View
The HMD provides a Total Field of View of 120 deg. x 67.5 deg. with a 40 deg. stereo overlap.
The Image Generator should be configured with the following settings:-
|
Left Eye |
Right Eye |
|
|
HFOV |
± 40 deg. |
± 40 deg. |
|
VFOV |
± 33.75 deg. |
± 33.75 deg. |
|
Heading |
- 20 deg. |
+ 20 deg. |
|
Pitch |
0 deg. |
0 deg. |
|
Roll |
0 deg. |
0 deg. |
The user nominally focuses at approximately infinity to view the image. The eyepieces have ± 4 Dioptres of adjustment from this nominal position.