ST2125 E1 Transmission Analyzer is a powerful handheld instrument, providing a scalable, future-proof solution for the testing needs of technicians involved in the installation and maintenance of E1 digital networks. It offers full-featured the error and alarm measurements you will need to verify quality-of-service in your networks. Plus, signal quality measurements including frequency, level, pulse shape, jitter and other functions ensure your costly, time-consuming work performed quickly and efficiently.

Basic Functions

• HDB3 and AMI line codes
• 75Ω (Unbalanced), 120Ω (Balanced) and high impedance line interfaces
• Out-of-service framed/unframed testing (“TX/RX” mode):
  √2Mb/s, N×64kb/s BER testing
  √Monitoring: Signal Loss, AIS, Frame Loss, Remote Alarm, Remote MF
  　 Alarm, CRC MF Loss, CAS MF Loss, Pattern Loss alarms and BIT,
  　 Code, FAS、CRC-4、E-BIT errors
  √Clock slips measurement
• In-service framed/unframed testing (“RX HI-Z” and “Through” mode):
  √Rx Hi-Z and through mode testing
  √Code, FAS, CRC-4 and E-BIT BER testing
  √FAS/NFAS, MFAS/NMFAS, timeslot activity monitoring
  √Timeslot data monitoring
  √Built-in 64kb/s tone channel listen capability
  √CAS and CCS signalling monitoring
• Round trip delay measurement
• APS delay measurement
• PCM simulator:
  √Extensive alarm and error generation
  √Frame data Si, Sa, A, FAS, CRC-4, MFAS, NMFAS and E-BIT control and
  　 monitoring
  √Idle word timeslot insertion
  √VF tone generation and measurement
  √CAS and CCS signalling generation and monitoring
• Frequency and offset measurement
• Clock slips measurement
• Up to ±999 ppm transmit clock deviation
• Double E1 channels in-service monitoring　 Option1
  √Double E1 channels Rx Hi-Z and through mode testing
  √Double E1 channels Code, FAS, CRC-4, E-BIT BER testing
  √Double E1 channels FAS/NFAS, CAS Multiframe, CCS timeslot 16 and
  　 timeslot activity monitoring
  √Double E1 channels timeslot data monitoring
  √Double E1 channels built-in 64kb/s tone channel listen capability
  √Double E1 channels CAS and CCS signalling monitoring
• Pulse mask measurement　 Option2
  √Input E1 pulse shape display
  √Pulse width measurement
  ñPulse width and amplitude ratio measurement
  √Rising edge and falling edge time measurement
  √Overshoot and undershoot ratio measurement
  √Pulse amplitude and level measurement
• Jitter measurement　 Option3
  √Peak-peak jitter measurement
  √Jitter measurement comply with O.172 filter (18-100kHz)
  √Hit seconds and hit free seconds counts
• Level measurement　 Option4
  ñPulse level real-time measurement
  √Peak-peak pulse level measurement
• Transmit clock sourced from external clock or signal　 Option1
• Real-time transmit circuit open/short indication
• Autoconfigure function:
  √E1 frame format auto-detection and autoconfiguration
  √BERT pattern auto-detection and autoconfiguration
  √The timeslots carried BERT pattern auto-detection and autoconfiguration
• Real-time clock
• BERT pattern: PRBS, Fixed Code, 16-BIT User Word
• Error injection: Single and Fixed Rate
• Reset the results to zero function
• Manual and auto-timer testing
• Self-check, keyboard and LED testing
• TU-T G.821, G.826 and M.2100 performance analysis
• Histograms analysis of error and alarm events
• Upgradeable embedded software via an RS232C interface

Main Features

• Handheld design and easy-to-use
• Full-featured measurements to E1 signals
• High resolution large backlit and contrast-adjustable LCD
• Smart navigation mode displays
• Extensive error and alarm generation, detection and indication
• Up to 6 hours operation from a single battery charge
• Up to 99 days continuance test performance
• Save/Recall of up to 10 user-defined setups and results
• Built-in NiMH rechargeable batteries and smart charger circuit
• Can be charged with automobile cigarette lighter battery adapter
• Test results could be uploaded, conserved by TestManagerPro
• The stored results could be output or printed with A4-szie report form, Excel and test files

Specifications

Configurations
Standard configuration list of the E1 Transmission Analyzer:

Optional configuration list of the E1 Transmission Analyzer: