Tektronix K1297-G20 Manual do Utilizador descarregar pdf (Página 119)

Appendix A: Interfaces

K1297-G20 Monitor User Manual

A-19

Connecting Wide SCSI-3 Devices (68 Pins)

It is possible to connect a wide SCSI-3 device (68 pins) to the K1297

Protocol Tester using the delivered SCSI adapter.

The SCSI interface of your Protocol Tester is wired like a SCSI-1

interface. To connect a wide SCSI-3 device (68 pins) you need this

specially qualified 50-to-68 pins SCSI adapter.

CAUTION. Some commercially-made adapters may cause a short circuit

between TERMPWR and GROUND if they connect pins 12, 13 and 37 of

the 50 pins SCSI interface to pins 17, 18 and 51 of the wide 68 pins SCSI

interface. Such an internal wiring will cause the failure of the SCSI

connection.

Use only the SCSI adapter delivered with your Protocol Tester.

The following table shows the crucial pin connections of the qualified

Tektronix 50-to-68 pin SCSI adapter:

Table A–13: Correct internal pin assignment of 50-to-68 pin SCSI

adapter

Pin of 50-pin

SCSI interface

Required internal connection Pin of 68-pin

SCSI interface

12 Not connected 17

13 Not connected 18

37 Not connected 51

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 197 198

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