PARADYNE CORPORATION

ACCULINK 3174 DSU/CSU

Card Type                DSU/CSU
NIC Type                 E1
Chip Set                 Unidentified
I/O Options              DTE ports (5), BNC connectors (2), auxiliary port,
                         communications port network interface via RJ-45
                         connector, test jacks (6), power jack
Wiring Type              RJ-48 120ohm shielded twisted pair

                         BNC 75ohm shielded twisted pair
Maximum Data Rate        56Kbps (64Kbps full duplex)
Data Bus                 External

[Image]

                                CONNECTIONS

        Function            Label            Function             Label

  Test jack - line in        CN1      DTE port (15-pin            CN10
                                      connector)

  Test jack - line in        CN2      DTE port 3 (25-pin          CN11
                                      serial connector)

  Test jack - line in        CN3      DTE port 4 (25-pin          CN12
                                      serial connector)

  Test jack - line out       CN4      15-pin clock port           CN13

  Test jack - line out       CN5      DTE port 1 (25-pin          CN14
                                      serial connector)

  Test jack - line out       CN6      DTE port 2 (25-pin          CN15
                                      serial connector)

  Power Jack                 CN7      Network interface via       CN16
                                      RJ-45 connector

  Auxiliary port             CN8      BNC connector - receive      RX

  Com port                   CN9      BNC connector -              TX
                                      transmit

                        USER CONFIGURABLE SETTINGS

                  Setting                       Label         Position

  »   120ohm balanced network interface          SW1             On
      selected

      75ohm unbalanced network interface         SW1            Off
      selected

  »   Open shield connection established         SW2             On

      Earth shield connection established        SW2            Off

  Note: SW2 must be on when using the 120ohm interface

                             DIAGNOSTIC LED(S)

   LED       Color       Status                   Condition

    OK       Green         On                DSU/CSU power is on

    OK          Green   Blinking       DSU/CSU is downloading software

    OK          Green      Off        DSU/CSU power is off or detecting a
                                                system failure

   FAIL     Yellow         On         Error has been detected on network

   FAIL         Yellow     Off          Error has not been detected on
                                                   network

   FAIL     Yellow      Blinking      DSU/CSU is conducting a self test

   TST      Yellow         On            DSU/CSU is executing a test

   TST          Yellow     Off         DSU/CSU is not executing a test

   SIG       Green         On         DSU/CSU is receiving a recoverable
                                             signal from network

   SIG       Green         Off         DSU/CSU cannot recover the signal
                                                 from network

   OOF      Yellow         On         Out of frame condition detected on
                                                   network

   OOF          Yellow     Off        Out of frame condition not detected
                                                  on network

   ALM      Yellow         On        Alarm condition detected on network

   ALM          Yellow     Off          Alarm condition not detected on
                                                   network

   EER      Yellow         On          Excessive error rate exceeded on
                                                   network

   EER          Yellow     Off       Excessive error rate not exceeded on
                                                   network

                   DTE DROP/INSERT AND DATA PORT LED(S)

  LED      Color      Status       DTE drop/insert         Data port
                                        port

  LED1     Green        On          A recoverable     DTR signal is high
                                   signal is being
                                    received from
                                      network

  LED1         Green   Off         DSU/CSU cannot      DTR signal is low
                                 recover the signal
                                    from network

  LED2    Yellow        On          Out of frame       Receiving all ones
                                 condition detected      from the DTE
                                     on network

  LED2         Yellow  Off          Out of frame      Receiving all zeros
                                    condition not        from the DTE
                                     detected on
                                      network

  LED2    Yellow     Blinking           N/A              Data is being
                                                          transferred

  LED3    Yellow        On         Alarm condition      Transmitting all
                                     detected on       ones from the DTE
                                      network

  LED3         Yellow  Off         Alarm condition      Transmitting all
                                   not detected on    zeros from the DTE
                                      network

  LED3    Yellow     Blinking           N/A              Data is being
                                                          transferred

  LED4    Yellow        On         A pulse density    CTS signal is high
                                    violation was
                                    detected (and
                                    corrected) on
                                      network

  LED4         Yellow  Off         A pulse density     CTS signal is low
                                  violation was not
                                     detected on
                                      network

  LED5    Yellow        On            A bipolar       RTS signal is high
                                    violation was
                                    detected (and
                                    corrected) on
                                      network

  LED5         Yellow  Off            A bipolar        RTS signal is low
                                  violation was not
                                     detected on
                                      network