HP37724A RECEIVE menu

• MAIN SETTINGS
  • RECEIVE SIGNAL
  • LEVEL-Impedance of the receiver
  • EQUALISATION - Equalisation of the receiver
  • PAYLOAD

• SETTINGS CONTROL - The connection of the transmitter and receiver

• TEST FUNCTION - Programming test functions
  • OVERHEAD CAPTURE
  • DCC DROP
  • POINTER GRAPH
  • OVERHEAD BER

• SOH MONITOR
• POH MONITOR

RECEIVE - MAIN SETTINGS submenu

• RECEIVE SIGNAL

  We can set here, that the transmission unit on which interface would receive a signal:

  • STM-4 OPTICAL - the instrument receives an STM-4 framed digital signal with 622 Mbit/s of speed at the optical interface.
  • STM-1 OPTICAL - the instrument receives an STM-1 framed digital signal with 155 Mbit/s of speed at the optical interface.
  • STM-1 - the instrument receives an STM-1 framed digital signal with 155 Mbit/s of speed at the coaxial interface (front face).
  • 140 MBIT/S - the instrument receives a framed or unframed signal with 140 Mbit/s of speed at the coaxial interface (backboard).
  • 34 MBIT/S - the instrument receives a framed or unframed signal with 34 Mbit/s of speed at the coaxial interface (backboard).
  • 2 MBIT/S - the instrument receives a framed or unframed signal with 2 Mbit/s of speed at the symmetric or coaxial interface (backboard).

• LEVEL
  • TERMINAL
  • MONITOR

• Equalisation
  • ON
  • OFF

• PAYLOAD-A source of the received signal (VC-4 payload) in the case of TRANSMIT_SIGNAL STM-1
  INTERNAL - internal 140 Mbit/s payload generator, framed or unframed :
  • 140MB/S UNFRAMED - 140 MB/S - The payload is an unframed signal of 140 Mbit/s
  • 140MB/S FRAMED - 140 MB/S - The payload is an framed signal of 140 Mbit/s
  • 140MB/S STRUCTURED - 140 MB/S - The payload is an framed signal of 140 Mbit/s
  EXTERNAL - signal of an external source
  • DROP 140MB/S - The payload is signal led to the connector of 140 Mbit/s IN (backboard) A payload a 140 Mbit/s IN csatlakozóra vezetett jel (hátlap)
  • TU12 - The payload is TU12 content (see themultiplexing plan)
  • TU2 - The payload is TU2 content
  • TU3 - The payload is TU3 content

• TU RECEIVE

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  TU MODE - How to insert the PDH signal flow to be forwarded to the SDH system?
  • ASYNC - asynchronous mapping. The beginning of the payload (PCM) frame and the beginning of the container frame (VC-12) are not in a bound connection with each other. A payload (PCM) keret kezdete és a konténer keret (VC-12) kezdete nincs kötött kapcsolatban egymással
  • Synchronous mapping modes:
    • FLOATING BYTE (NO TS0, TS0) no unframed
    • LOCKED BYTE (NO TS0, TS0) no signal label, no unframed
    • LOCKED BIT no signal label
    • FLOATING BIT

  TU concatenated
  In the case of TU2 payload

  • OFF
  • TU2-2C
  • TU2-3C
  • TU2-4C
  • TU2-5C
  • TU2-6C

  SELECTED TU (see the multiplexing plan)

  • TUG3 [3] 1,2,3
  • TUG2 [1] 1,2,3,4,5,6,7
  • TU [1] 1,2,3

  TU PAYLOAD - In the case of TU12 content
  What will we forward in a TU-12 frame?
  INTERNAL - the signal of the internal 2 Mbit/s (PCM) payload generator, which can be framed or unframed.

  • INTERNAL UNFRAMED
  • INTERNAL CAS - PCM30
  • INTERNAL NO MFM - PCM31
  • INTERNAL CRC4 - PCM 31CRC
  • INTERNAL CAS,CRC4 - PCM 30CRC
  EXTERNAL - the PCM signal, led to the backboard connector
  • DROP 2 MB/s - in the case of asynchronous mapping (the PCM frame type is unimportant)
  • CAS DROP - PCM30 - in the case of synchronous mapping
  • NO MFM DROP - PCM31 - in the case of synchronous mapping
  • CRC4 DROP - PCM 31CRC - in the case of synchronous mapping
  • CAS,CRC4 DROP - PCM 30CRC - in the case of synchronous mapping

  TIMESLOT - to what timeslot of TU PAYLOAD will be inserted the PATTERN sequence generated by the payload generator?
  (Only in the case of framed payload)

  • ALL T/S - to every timeslot
  • SELECT TIMESLOT 1..30(31) - to a selected timeslot

  PATTERN
  (it will be inserted to the selected timeslots of the TU PAYLOAD)
  

  • 2^15-1 - PRBS
  • 2^20-1 - PRBS
  • 2^23-1 - PRBS
  • 2^11-1 - PRBS
  • ALL ZEROS
  • ALL ONES
  • 1 IN 8
  • USER WORD

  DROP PORT CODE CODE
  In the case of DROP:
  

  • AMI
  • HDB3

RECEIVE - SETTINGS CONTROL submenu

TEST FUNCTION - Programming test functions submenu

• OVERHEAD CAPTURE
  • Capture of channel
    • RSOH (3xA1, 3xA2, C1, E1, F1, D1-D3)
    • MSOH (H1, H2, K1, K2, D4-D12, Z1 column1, Z1 column2, Z1 column3, Z2 column4, Z2 column5, Z2 column6, E2
    • POH (J1, C2, G1, F2, H4, Z3, Z4, Z5)
  • Trigger (OFF, ON, ON NOT
• DCC DROP (REGEN DCC, MULTI DCC, USER PROG DCC)
  • DCC BYTE POLARITY (REVERSED, NORMAL)
• POINTER GRAPH
• OVERHEAD BER
  • Measure PRBS from O/H byte
    • RSOH (C1, E1, F1, D1, D2, D3)
    • MSOH (K1, K2, D4...D12, Z1, Z2, E2
    • POH (J1, C2, G1, F2, H4, Z3, Z4, Z5)