1,360
edits
Space Shuttle Avionics: Difference between revisions
Jump to navigation
Jump to search
→Choosing a screen
| Line 56: | Line 56: | ||
The connecting element between MDUs, GPCs and the keyboards are the integrated display processors (IDPs). There are three IDPs responsible for the forward panel. Each keyboard talks to an IDP, each IDP monitors the GPCs either for SM or GNC tasks, and each MDU is connected to at least one IDP (possibly two) via a primary and a secondary port. | The connecting element between MDUs, GPCs and the keyboards are the integrated display processors (IDPs). There are three IDPs responsible for the forward panel. Each keyboard talks to an IDP, each IDP monitors the GPCs either for SM or GNC tasks, and each MDU is connected to at least one IDP (possibly two) via a primary and a secondary port. | ||
For instance, the left-most screen of the commander (CDR1) is connected to IDP 3 via the primary (normally chosen) and IDP 1 via the secondary port. Thus, to use GNC functionality on this screen, it is necessary to | For instance, the left-most screen of the commander (CDR1) is connected to IDP 3 via the primary (normally chosen) and IDP 1 via the secondary port. Since figuring out the connection isn't straightforward, a box with the IDP currently responsible for the screen is displayed in the lower part of the screen whenever a DPS page is selected. Dependent on which keyboard is currently connected to the IDP, colored bars are also displayed. A red bar extending to the left indicates that the left (Commander-side) keyboard is talking to the IDP, a yellow bar to the right indicates that the Pilot-side keyboard is active. For IDP 3, it is possible to have both keyboards talking to the same screen, in which case you can type command sequences affecting the IDP from both sides. | ||
[[File:Shuttle avionics IDP indicator.jpg|128px|IDP indicator box and keyboard bar of the Space Shuttle DPS]] | |||
Thus, to use GNC functionality on this screen, it is necessary to | |||
* select DPS MENU via the edgekeys | * select DPS MENU via the edgekeys | ||