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This soft copy for use by IBM employees only.
•
Power Budget for the Expansion Chassis
The 8285 Expansion Chassis has a universal power supply that provides
power for these three available slots for 8285/8260 modules. When planning
for your installation, please make sure that the power requirements of your
planned configuration do not exceed either the +5V power budget or the
+12V power budget.
Note
Any 8260 ATM module (except the A-CPSW module) will function properly
in the 8285 Expansion Chassis provided that the power budget is not
exceeded. However, any configuration containing modules that are not
officially supported by the 8285 will be considered an unsupported
configuration. Please note that as of November, 1996, the following 8260
ATM modules were not supported in the 8285:
•
2-slot 8272 ATM/LAN Switch Module
•
3-slot 8272 ATM/LAN Switch Module
•
2-slot 8271 ATM/LAN Switch Module
•
3-slot 8271 ATM/LAN Switch Module
•
Multiprotocol Switch Service (MSS) Server Module
To determine if there is adequate power to support your desired
configuration, simply add up the required power listed in Table 20, and make
sure that it is less than the available power listed in the same table.
Note: Although listed, there is no supported configuration in which the
+12V power budget can be exceeded.
Table 19 (Page 2 of 2). Power Supply Specifications of Future 8285 Models
Description Base Unit Expansion Unit
Surge Current 40A 40A
Leakage Current 3.5mA 3.5mA
Caloric Value
- Kcal/hr
- BTU
72
285
104
412.67
Table 20 (Page 1 of 2). Power Budget of the 8285 Expansion Chassis
Device Watts (+ 5V) Watts ( +12V)
Available Power Budget (Present/Future) 120/150 15.6/24
Required Power:
ATM 2-Port 155 Mbps Flexible Media Module 25.0 1.2
ATM 3-Port 155 Mbps LAN Concentration Module 25.0 1.2
ATM 155Mbps I/O Cards: MMF,SMF,UTP/STP,STP 2.5
ATM 4-Port 100 Mbps MIC Fiber Module 35.0 2.5
ATM 4-Port 100 Mbps SC Fiber Module 35.0 2.5
Video Distribution Module 37.5
ATM 12-Port 25 Mbps UTP Concentrator Module 35.0 1.2
ATM 1-slot Carrier Module 17.5 0
94 ATM Workgroup Solutions: Implementing the 8285 ATM Switch