Owner`s manual

5–3Hub Power System
In the example below, a DEChub 900 MultiSwitch is configured with two 32-port
repeaters, one fiber-optic repeater, two DEChub 90-type modules, and one multiport
bridge. With this configuration, you need three power supply modules for an N+1
power system, or only two power supply modules if you do not require N+1.
Table 5–2: Power Example
Component
+5 V +15 V Total Power
Chassis 3.0 A 0.0 A 15.0 watts
DECbridge 900MX 9.0 A 1.5 A 67.5 watts
DECrepeater 900TM 4.0 A 0.5A 27.5 watts
DECrepeater 900TM 4.0 A 0.5A 27.5 watts
DECrepeater 900FP 8.0 A 0.5 A 47.5 watts
DEChub 90 module
1
, without AUI
(general power guideline)
1.5 A 0.0 A 7.5 watts
DEChub 90 module
1
, with AUI
(general power guideline)
1.5 A 0.5 A 15.0 watts
Total Power Consumption
31.0 A 3.5 A 207.5 watts
1
DEChub 90 network modules report their actual power requirements.
NOTE
Refer to each module’s product documentation for
power specifications. Variations of the modules
may have changes to the actual power needs.
The total power needed for the hub as configured
should be calculated, then enough power supply
modules obtained to meet the power needs.