HP Vectra 520 Guía de instalación descargar pdf (Pagina 97)

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3-42 Hardware installation: Application Module (SNN/SNN-E)

553-4001-111 Standard 1.0 March 1997

VME multiport cable

This cable, seen in Figure 3-17, connects the Meridian MAX module with

each peripheral in the system. Each cable has a single male DB-25 plug at

one end, and three female DB-25 plugs at the other end. The single DB-25

plug connects to a DB-25 socket on the Generic I/O panel. Each of the

three DB-25 plugs at the other end are connected to a peripheral device.

Refer to the correct port assignment chart when connecting peripherals to

cables.

An RS-232 straight-through cable with male DB-25 connectors can extend

the range between a Meridian MAX and a peripheral device. The RS-232

must be less than 13 meters (42 feet) long, and must use all 25 pins. For

greater distances, refer to the “Modems” chapter. The cables from

ACD-MAX 3.0 cannot be used by Meridian MAX.

Table 3-7 is the wiring table for the multiport cable. Note that all of the pins

listed in the “From” column represent pins in the plug which connect to the

Generic I/O panel. Pins listed in the “To” column are pins in the DB-25

sockets for the cables listed in the “Cable” column.

Table 3-7

VME multiport cable wiring

From To Cable Signal

name

From To Cable Signal

name

2 2 A TD 25 7 B GND

3 3 A RD 24 8 B CD

4 4 A RTS 23 20 B DTR

5 5 A CTS 14 2 C TD

6 6 A DSR 15 3 C RD

7 7 A GND 16 4 C RTS

8 8 A CD 17 5 C CTS

20 20 A DTR 18 6 C DSR

9 2 B TD 19 7 C GND

10 3 B RD 21 8 C CD

11 4 B RTS 22 20 C DTR

12 5 B CTS 1 1 A SHIELD

13 6 B DSR 1 1 B SHIELD

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 ... 502 503

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