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ST-2120 E1 Service Tester
ST2120 E1 service tester, 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 all the error and alarm measurements you will need to verify quality-of-service in

 Specifications

ST-2120 Service Tester

ST2120 E1 service tester, 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 all the error and alarm measurements you will need to verify quality-of-service in your networks. Plus, signal quality measurements including frequency, level and other functions to ensure your costly, time-consuming work performed quickly and efficiently.

Basic Functions

  • 120 and 75 line interfaces
  • HDB3 and AMI line codes
  • Out-of-service framed and unframed testing
  • 2Mb/s, N64Kb/s BER testing
  • Frame data and alarm monitoring
  • Clock slip measurement
  • In-service framed and unframed testing
  • Hi-Z and through mode testing
  • CODE, FAS, CRC4, E-BIT BER testing
  • Frame data and timeslot activity monitoring
  • Built-in 64kb/s tone channel listen capability
  • CAS and CCS signaling monitoring
  • Round trip delay measurement
  • APS delay measurement
  • PCM simulator
  • Extensive alarm generation
  • Frame data control and monitoring
  • Idle word timeslot insertion
  • VF tone generation and measurement
  • CAS and CCS signaling generation and monitoring
  • Frequency, offset and level measurement
  • Up to 999ppm transmit clock deviation
  • Testing pattern: PRBS, Fix Code, 16-BIT User Word
  • Error injection: Single and Fixed Rate
  • Real-time transmit circuit open/short indication
  • Manual and auto-timer measurement
  • G.821, G.826, and M.2100 performance analysis

Main Features

  • Handheld design and easy-to-use
  • High resolution backlit LCD
  • Smart navigation mode displays
  • Self-check and keyboard testing function
  • Extensive error and alarm generation, detection and indication
  • Histograms analysis of alarm and error events
  • Up to 99 days continuaous test performance
  • Save/Recall of up to 7 user-defined setups and 10 sets of results
  • Up to 6 hours operation from a single battery charge
  • Built-in NiMH rechargeable batteries and smart charger circuit
  • Can be charged with automobile cigarette lighter battery adapter
  • Upgradeable software via an integrated USB interface
  • Test results uploaded, conserved and printed by TestManager software.

Configuration List

Item
Qua.
Item
Qua.
AC Power Adaptor
1
TestManagerPro Software CD
1
Automobile Cigarette Lighter Battery Adaptor cable
1
Waterproof Package
1
120 ohm Balanced Test Cable
1
Users Manual
1
75 ohm Unbalanced Test Cable
2
Quality Certificate Card
1
USB Communication Cable
1
Maintenance Card
1
AA NiMH Rechargeable  Battery
5
 
 

 

 

 

 

Specifications

Item

Description

Internal Clock

2048Kb/s 10ppm

Frequency Deviation

999ppm

Line Interfaces

75 (Unbalanced), 120 (Balanced); High Input Impedance >2KW

Line Code

HDB3, AMI

Framing

Unframed, PCM30, PCM30CRC, PCM31, PCM31CRC

Level Measurement

-43dB -2.5dB

Tx Clock Source

Internal, Interface and External 2MHz clock or signal (optional)

Frequency Measurement

Accuracy 1Hz

Offset Measurement

Accuracy1ppm
Range-999ppm+999ppm

VF Injection

Frequency200Hz3400HzStep10HZ

Level:-60dBm+3dBm

VF Measurement

Frequency200Hz3400Hz, Accuracy1Hz

Level range : -60.00dBm+3.14dBm
-60.00dBm -21.00dBm, accuracy: 2.87dBm
-20.00dBm +3.14dBm, accuracy: 0.21dBm

Delay measurement

Accuracy 1s

Test Patterns

PRBS

223-1, 215-1, 211-1, 29-1

Fixed Code

1111, 0000, 1010

16-BIT

User Programmable Word

Alarm Indications

Signal Loss, AIS, Frame Loss, MFrame loss, Pattern Loss, Remote Alarm, Errors, Low Battery

Error Injection

Type: BIT, FAS, CODE, CRC4, E-BIT

Single, Fixed Rate: 10-2, 10-3, 10-4, 10-5, 10-6, 10-7

Alarm injection

AIS, Frame Loss, CAS and CRC MFrame Loss, Remote Alarm, Remote MFrame Alarm

Performance Analysis

ITU-T G.821, G.826 and M.2100

Display

240x160 pixel backlit monochromatic LCD

Serial Port

USB Connector

Rechargeable Batteries

51.2V AA NiMH batteries, continuous working for 6 hours

Recharge Time

Approx. 2 hours

AC Power
Adapter

Input: 100V ~ 240VAC, 50/60Hz
Output: 12VDC /1.5A

TestManager

Operating System: WIN98/ME/2000/NT/XP

Dimensions

LWH 243mm90/128mm60mm

Operating Temperature

0 ~ 50

Storage Temperature

-20 ~ 70

Humidity

5% ~ 95% non-condensing

Weight

Approx. 700g


 
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