The lnb has a switch built in and it does not output to a different satellite on each different output unless it is connected to a DPP44 switch so disregard the output labeling on that diagram.
I don't think this is correct, as the LNB needs a receiver to switch the satellites to the individual ports. If the receiver isn't telling the LNB how to switch, like when you are trying to align without a successful check swith in the memory, the LNB defaults to porting each satellite to the respective port as the diagram shows.
You should be able to see all three satellites from any one of the three output ports.
This is after you have dish alignment and perfromed a successful check switch.
Below is from a 1000.4 installation manual:
DISH 1000.4 Antenna Installation Overview
1. Find Azimuth/Elevation/Skew angles for your location (instructions on page 3 and tables on page 11).
2. Find a location for the dish antenna with a clear line of sight and a sturdy mounting surface (page 3, step 1).
3. Mount the mast, making sure it is absolutely vertical (page 3, steps 2 and 3). Attach struts to the mast, using the
instructions that came with your struts.
4. Assemble the dish antenna, setting the skew and elevation angles in the process (pages 3-4, steps 4-6).
5. Mount the dish antenna on the mast and point the dish to the azimuth angle (page 4, step 7).
6. Run cables between the dish antenna and the receiver(s), leaving a service loop around the dish mounting bracket
and attaching cables to the mast using zip ties (page 5, step 1).
7. Using a peaking meter attached to the DPP 1000.4 LNBF PORT 2, rough peak the dish on 72.7°W using
transponder 19 or 21 for maximum strength. Lock the mast clamp bolts (see Table 1) and re-confirm signal (page
5, steps 2 and 3).
Note: If using a peaking meter, only odd transponders will be detected from 72.7°W at this time.
8. Using the elevation rod, fine-tune the elevation angle to achieve maximum signal. Tighten the top elevation rod
nut, and then tighten the side elevation bolts marked T. Reconfirm signal after tightening all elevation bolts (page
6, step 6).
9. Using the azimuth fine-tune cam, fine-tune the azimuth angle to achieve maximum signal. Tighten the bolts
labeled with a T and reconfirm signal. Do not tighten the azimuth fine-tune cam (page 7, step 6).
10. Connect the receiver cable(s) to the DPP 1000.4 LNBF PORT 1 (and PORT 2 and PORT 3, as necessary)
and receiver (page 7, steps 7-9).
11. Run Check Switch test and confirm 61.5°W, 72.7°W, and 77°W reception (page 8, steps 10 and 11).
12. Take a software download, if you didn’t already (page 8, step 12).
13. Run a second Check Switch test and confirm 61.5ºW, 72.7ºW, and 77° reception (page 8, step 13).
14. Install additional receiver(s), if necessary.
15. If applicable, connect a second satellite dish to the DPP 1000.4 LNBF’s LNB IN port (page 9, steps 1-4).