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E-2 SPARC Enterprise M4000/M5000 Servers Service Manual • August 2009
E.3 Signal Line Configuration
This section describes signal definitions and electrical specifications.
FIGURE E-1 shows the signal line configuration when connected to a UPS.
FIGURE E-1 Connection with UPS and the Server
TABLE E-1 defines these signal lines.
TABLE E-1 UPS Interface Signals
Signal name Definitions Pin number Remarks
*BPS/*UALM Signal indicates faulty UPS conditions 6 Normal: OFF
Failure: ON
*BTL Signal provides a warning of a low battery level
and a pending UPS failure.
7Normal: OFF
Warning: ON
(Note1)
*BTL
*BPS/*UALM
*ACOFF
SG
*BTL
*BPS/*UALM
*ACOFF
SG
UPS cableUPS Server
7
6
9
5
1