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5.5 Power Requirements
For most installations, the CU 5905 supplies sufficient power for the discussion units. Depending on the setup, the CU
5905 supports anywhere from 22-48 units at a time without additional equipment.
To maximize the unit count without adding equipment:
• Use shorter cables. More units are supported when the distance is minimized between the CU and the discussion
units.
• Use both A B Chain outputs from the CU. Units must be divided evenly across each chain.
② Distance between participants
① Length from CU 5905 to first unit
Figure 19. Power Decreases when Cables Increase
5.5.1 Units Supported by the CU 5905
The following tables show how to connect the most discussion units without adding additional equipment.
Note: When using two chains, distributable the discussion units evenly across both chains to maximize unit count.
1 Meter between Discussion Units
2 Meters between Discussion Units
Distance to DU chain
One Chain
Two Chains
Distance to DU chain
One Chain
Two Chains
10
44
48
10
40
48
30
39
44
30
36
44
50
34
40
50
31
40
100
21
22
100
11
22