150 DuBois St. Suite #3
Santa Cruz, Calif. 95060
(831) 457 8891 (831) 457 4793 Fax
Est. 1988


Dynamic Engineering's Designs

SCSI II/III to 68 Terminal positions
HDEterm68-MP shown

HDEterm68

The high density 68 pin SCSI II/III connector is being used for purposes other than SCSI interfaces because of board and front panel space limitations. For example in the PMC environment the SCSI connector provides an excellent size and pin count for the front panel space allowed. The SCSI connector while dense, is not easy to connect to with wiring intended to go to multiple locations.

The HDEterm68 terminal provides an easy way to get from a high density SCSI connector to discrete wires. For example with the PMC-Parallel-IO design a standard SCSI II cable can be used to connect the PMC to the HDEterm68 and then to the system wiring via the terminal strips provided. The HDEterm68 provides a space efficient, low cost method of interconnecting the control electronics to the rest of the sensors, IO, machinery etc.

The HDEterm68 comes with two SCSI II compatible connectors. One connector could be used for a termination plug or for a second SCSI cable. The screw terminals could then be used as testpoints. The SCSI connectors are connected to the screw terminals and to each other 1:1. The "in" SCSI connector is connected to the screw terminals and then to the "out" connector.

If you want custom terminations we can accomodate them. The HDEterm68 has several features, which are not installed as part of the standard product, to allow series, parallel, pull-up/pull-down terminations to be added to each line or pair of lines independently. The resistor patterns are for 0805 resistors. Three rows of 68 header positions each allow interconnect options between the resistors, the SCSI and screw lock connectors. The primary connector is carefully routed to the terminal block and then back to the secondary connector for clean signals. The resistor packs can be installed or not to further control stub length for your application. Additional features include: power entry and distribution posts, Oscillator and RS485 transceiver positions with jumper selectors for direction and interconnection. Please send us your specifications. We will assign a modified part number and build a custom terminal block for you.

Connectors

2 - SCSI II/III compatible with cable locks
SCSI connectors can be vertical, horizontal or mixed. Please specify -V, -H or -M
2 row by 34 terminal strip with side entry wires and top screw lock. Rows are offset for ease of access.
Available with plastic and DIN rails -P or as shown for bench top operation.

Weight : With plastic: 10.5oz without: 6.5oz


The HDEterm68 mechanical mouting data is available with the HDEterm68 Mechanical Dimensions drawing. Locations and dimensions of the mounting holes and board, height with and without plastic are included.

A schematic for the HDEterm68 is provided to show the possibilities for terminations, loop-back, signal sources etc.
Reference HDEterm68 Schematic


Order Information
HDEterm68-VP = vertical SCSI connectors with plastic
HDEterm68-HP = horizontal SCSI connectors with plastic
HDEterm68-MP = 1 horizontal and 1 vertical connector with plastic
leave off the "P" if no plastic / DIN rails are desired.

Please select from below if you wish to have a special version

Quantity


Related Products:
HDEcabl68 SCSI II/III Cable

Please select cable version below.
LB = Latch block
TS = ThumbScrew
M/F= Male to Female connector

Quantity


Customer Specials
Dynamic Engineering modified the HDEterm68 for customer specific requirements. With our router we can cut new connector positions where the terminal block normally goes. Using wire-wrap replacment connectors and mounting the header strip to the rear of the board allows full customization. We made two versions of this implementation with slightly different wire-wrap interconnections. When the customer goes to production we can make a new version of the HDEterm68 incorporating the new connectors and interconnections. Good for proto-typing; fast and low cost. Good for production; lower cost and smaller height. Dynamic Engineering recommends using the prototyping service to make your customized version for initial integration and test, then converting to a production quality PC board incorporating your changes. Typical cost is $250 ea. for the customized prototype.


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