External Connector - Adaptec AHA-1740A Technical Reference Manual

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External Connector

Shielded 50-pin high density (Alternative 1) connector as specified in proposed ANSI
standard X3T9.2/86-109 Revision 10h, Section 4, Figure 5.
For connector pin out, see Appendix B.
Partial list of compatible connector plugs or cable assemblies (for reference only):
Manufacturer
AMP
Fujitsu
Honda
Cable for external SCSI connector should be good quality 100% shielded round cable
with 25 twisted pairs. Each pair should have a characteristic impedance (Z
90 ohms and 135 ohms. Wire gauge may be 26 or 28 AWG. All pairs should have the
same impedance and should have the same delay per length of cable. Cables meeting
these requirements will normally operate correctly in any SCSI configuration and
should normally meet all FCC requirements.
For best results, the SCSI committee recommends that SCSI connectors should not
be placed less than one foot apart on internal (ribbon) cable or on external cable
when using Fast SCSI 10 Mbytes/second data transfers.
Cable material which meets this specification is available from a number of vendors,
including:
Manufacturer
C&T
Madison
Complete cable assemblies are available from a number of manufacturers. Among
them are:
Manufacturer
Amphenol Interconnect Products
Lynn Products Inc.
Quitec Interconnect Systems
Icontec
Enhance Cable Technology
1- 8
Model
Connector
Back Shell
Connector
Back Shell
Connector
Back Shell
Part Number
16035
4099
Phone
(607) 786-4370
(800) 634-5093
(408) 272-8000
(408) 945-7766
(408) 293-2425
AHA-1740A/1742A/1744
Part Number
749111-4
749193-1
FCN-237R050-G/F
FCN-230C050-D/E or -C/E
PCS-XE50MA
PCS-E50LA
) between
0
Phone
(508) 752-7320