
ADC KENTROX

DATASMART MODELS 7856X, 7876X

Card Type        T1 CSU/DSU
Chipset          Unidentified
T1 Transfer Rate 1.544Mbps
T1 Protocol      Unidentified
Frame Type       Unidentified
Data Bus         Serial

[Image]

                                CONNECTIONS

          Function             Label           Function           Label

  Monitor receive               CN1      V.35 serial data port     CN8
  equalization in jack                   1

  Monitor receive network       CN2      V.35 serial data port     CN9
  out jack                               2

  Monitor monitor jack          CN3      V.24 DCE serial          CN10
                                         control port

  Monitor transmit              CN4      V.24 DTE serial          CN11
  equalization out jack                  control port

  Monitor transmit network      CN5      AC or DC power in        CN12
  in jack                                (depends on model)

  Monitor transmit monitor      CN6      T1 line out              CN13
  jack

  Auxiliary jack (see           CN7      Alarm cutoff switch       S3
  pinout below)

                                CN1 PINOUT

          Function              Pin             Function            Pin

  Positive external clock in     1      Not used                     6

  Negative external clock in     2      Alarm signal common          7

  Chassis ground                 3      Normally open alarm          8
                                        contact

  Signal ground                  4      Normally closed alarm        9
                                        contact

  Unbalanced external clock      5
  in

                       THUMBWEEL FUNCTION SELECTION

            Function                   S1            S2           S3

      Reset loopback tests         Position 0      Pushed     Not pushed

   Begin remote line loopback      Position 1      Pushed     Not pushed
              test

          Unidentified             Position 2      Pushed     Not pushed

  Reset to factory defaults and    Position 3    Pushed for    Pushed for
        switch settings                            2 sec.       2 sec.

          Unidentified             Position 3      Pushed     Not pushed

  Begin near-end line loopback     Position 4      Pushed     Not pushed
              test

     Begin near-end payload        Position 5      Pushed     Not pushed
         loopback test

      Send QRST test code          Position 8      Pushed     Not pushed

     Send 3 in 24 test code        Position 9      Pushed     Not pushed

            Note:S2 and S3 must always be held for at least one-half of
            one second for the above functions to take effect.

                             DIAGNOSTIC LED(S)

    LED         Color         Status                 Condition

    TXD1       Yellow           On         Data port 1 is receiving data
                                                   from network

    TXD1       Yellow          Off          Data port 1 is not receiving
                                                 data from network

    RXD1       Yellow           On          Data port 1 is transmitting
                                                  data to network

    RXD1       Yellow          Off               Data port 1 is not
                                           transmitting data to network

    CTS1       Yellow           On            Data port 1 CTS is high

    CTS1       Yellow          Off            Data port 1 CTS is low

    RTS1       Yellow           On            Data port 1 RTS is high

    RTS1       Yellow          Off            Data port 1 RTS is low

    TXD2       Yellow           On         Data port 2 is receiving data
                                                   from network

    TXD2       Yellow          Off          Data port 2 is not receiving
                                                 data from network

    RXD2       Yellow           On          Data port 2 is transmitting
                                                  data to network

    RXD2       Yellow          Off               Data port 2 is not
                                           transmitting data to network

    CTS2       Yellow           On            Data port 2 CTS is high

    CTS2       Yellow          Off            Data port 2 CTS is low

    RTS2       Yellow           On            Data port 2 RTS is high

    RTS2       Yellow          Off            Data port 2 RTS is low

    DATA        Green           On         Valid data signal detected on
                                                   T1 interface

    DATA        Green        Blinking       Network Set, Reset, or Test
                                           code detected on T1 interface

    DATA        Green          Off         No valid signal detected on T1
                                                     interface

     CV          Red            On         Code Violation error detected
                                                  on T1 interface

     CV          Red           Off            Code Violation error not
                                             detected on T1 interface

    LOS          Red            On            Loss Of Signal condition
                                             detected on T1 interface

    LOS          Red           Off          Loss Of Signal condition not
                                             detected on T1 interface

    OOF          Red            On             Signal is out of frame
                                               synchronization on T1
                                                     interface

    OOF          Red           Off           Signal is not out of frame
                                               synchronization on T1
                                                     interface

                         DIAGNOSTIC LED(S) (CONT)

    LED         Color          Status                 Condition

    AIS          Red             On            Alarm Indication Signal
                                               condition detected on T1
                                                      interface

    AIS          Red          Blinking      Alarm Indication Signal being
                                             transmitted to T1 interface

    AIS          Red             Off           Alarm Indication Signal
                                             condition not detected on T1
                                                      interface

    YEL         Yellow           On         Remote Yellow Alarm condition
                                              detected on T1 interface

    YEL         Yellow        Blinking       Local Yellow Alarm condition
                                              detected on T1 interface

    YEL         Yellow           Off          Yellow Alarm condition not
                                              detected on T1 interface

    PWR         Green            On                  Power is on

    PWR          Red             On               Self-test failed

    PWR          Red          Blinking      Serious problem has occurred

    PWR          N/A             Off                Power is off

    LOOP        Yellow           On             Local loopback test in
                                                      progress

    LOOP        Yellow        Blinking         Remote loopback test in
                                                      progress

    LOOP        Yellow           Off        Loopback test not in progress

    SEND        Yellow           On             Test code being sent

    SEND        Yellow        Blinking       Remote loopback test may be
                                              in progress but cannot be
                                                      verified

    SEND        Yellow           Off          Test code not being sent

    ALM          Red             On          Alarm condition detected and
                                             awaiting user intervention

    ALM         Green            On           Alarm condition detected;
                                            user intervention in progress

    ALM          Red          Blinking      Serious problem has occurred

    ALM          N/A             Off        Alarm condition not detected

