RANCHO TECHNOLOGY, INC.

RTSDA-M2/RTSDA-S2/RTSDA-SP

Data bus:                  None
Size:                      3.25 in. form factor (RTSDA-S2)

                           5.25 in. x 8.2 in. x 1.75 in. (RTSDA-M2)

                           10 in. x 10.5 in. x 3.0 in. (RTSDA-SP)
Hard drive supported:      Fast SCSI-2 devices, single-ended to
                           differential converter
Floppy drives supported:   None

[Image]

                                CONNECTIONS

                    Function                             Location

  50-pin single-ended SCSI connector - internal             J1

  50-pin differential SCSI connector - internal             J2

  Converter active LED                                      J3

  SCSI active LED                                           J4

  Note: On the RTSDA-SP model, the converter LED is located on the front
  panel and the 50-pin connectors are external.

                           TERMINATION SELECTION

     Function        Single-End       Differential-End

                         W3                 RN1-4               RN5-8

  »     Enable         Closed             Installed           Installed

       Disabled         Open            Not installed       Not installed

                        TERMINATION POWER SETTINGS

      Function        Single-side   Differential-side

                          W1                W2             W4       W5

  »   TERMPWR            Open             Closed         Closed    Open
      supplied to
      converter
      terminators
      directly

      TERMPWR            Open              Open           Open     Open
      supplied to
      converter
      terminators
      through diode

      TERMPWR           Closed             Open           Open    Closed
      supplied to
      both
      converter
      terminator
      and remote
      SCSI bus pin
      26 through
      diode (with
      backflow
      prevention)

      TERMPWR           Closed            Closed         Closed   Closed
      supplied to
      both
      converter
      terminators
      and remote
      SCSI bus pin
      26 directly

  Note: Do not use the last option when other peripherals supply
  terminator power to the SCSI bus.