Compaq EK-ASIP2-OG. D01 LSI/120 Loop-Start 50-Pin Designations, IP Power Controller, User Alarms

Installing the AlphaServer IP Platform Hardware

Table 2-6: LSI/120 Loop-Start 50-Pin Designations

RING 1	1	26	TIP 1
RING 2	2	27	TIP 2
RING 3	3	28	TIP 3
RING 4	4	29	TIP 4
RING 5	5	30	TIP 5
RING 6	6	31	TIP 6
RING 7	7	32	TIP 7
RING 8	8	33	TIP 8
RING 9	9	34	TIP 9
RING 10	10	35	TIP 10
RING 11	11	36	TIP 11
RING 12	12	37	TIP 12
RING NC	13	38	TIP NC
RING NC	14	39	TIP NC
RING NC	15	40	TIP NC
RING NC	16	41	TIP NC
RING NC	17	42	TIP NC
RING NC	18	43	TIP NC
RING NC	19	44	TIP NC
RING NC	20	45	TIP NC
RING NC	21	46	TIP NC
RING NC	22	47	TIP NC
RING NC	23	48	TIP NC
RING NC	24	49	TIP NC
RING NC	25	50	TIP NC

2.4.1.2 IP Power Controller

The AlphaServer IP Platform supports the following power controller models: 120 Vac, 250 Vac, or -48 Vdc. Each simplex and duplex rackmount system has one or two power controllers located in the bottom of the cabinet. Each controller supports one BA35x-Sx, ISA bus expansion chassis, and an AlphaServer 1000A system.

Instructions for wiring the -48 Vdc power controllers to the building's power source are included in Appendix C.

2.4.1.3 User Alarms

If the AlphaServer IP Platform does not use the -48 Vdc power controller, the user can connect up to three external TTL signal alarms to the 8-pin MJ connector on the alarm control module. Refer to Appendix B for a pinout of this connector and the Intelligent Peripheral Fault Manager for Tru64 UNIX Installation and User's Guide for information on configuring these alarms.

2–8AlphaServer Intelligent Peripheral Platform Hardware Owner's Guide