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    HC-ERT-M

    HC-ERT-MOverviewThe HC-ERT-M bit error tester operates at data rates from 64Kbps to 2Mbps. It is necessary measuring instrument, designed for field use in V.35,V.24and E1 line access, maintenance, che

    1. Detailed information

    HC-ERT-M

    Overview

    The HC-ERT-M bit error tester operates at data rates from 64Kbps to 2Mbps. It is necessary measuring instrument, designed for field use in V.35,V.24and E1 line access, maintenance, check and acceptance. It features in low power consumption, light and convenient for carry, it is the ideal testing instrument for modern communication engineer.

    The HC-ERT-M support three interfaces:V35,V24 and E1.When testing a DCE, all the settings can be throught menu setup, and the mode of display handover simply. The testing results show on the LCD, various statistics for code error performance index like: counting bit errors, bit error rate, block errors, errored second and testing time. As this instrument is a plug and play tester, the operation is easy.

     

    Features

    Portable device, lightweight and easy-to-use

    Menu driven setup, LCD display

    Can inject an error, for checking the tester,the line and the device

    Having complete warning and indication

    Attached a DC power supply

    Changing the test cable, user can test V.35, V24 and E1 device

    Background lighting, allow using in the darkness

    Provide various test signal sequences

    PRBS:31PRBS sequence; 511PRBS sequence; 2048PRBS sequence

    Constant bit:10101010...sequence,10001000...sequence

    The pseudo-random sequence codes comply with ITU-T O.151, O.152, and O.153


    Specification

    V.35 interface:

    Comply with ITU-T V.35 protocol

    Rate: N×64KN=132

    Interface mode:DTE


    V.24 interface:

    Comply with ITU-T V.24 protocol

    Rate: N×64KN=15

    Interface mode: DTE

    E1 interface :

    Comply with ITU-T G.703 protocol

    Line codes:HDB3

    Impedance: 75/120 Ω (choosing by changing the test cable)rn
    Time clock: internal clock / external clock

    The way of insert error codes: single bit insertion

    Testing result display mode: counting bit errors, bit error rate, block errors, errored second and testing time

    Connector: DB37/F (testing mode depends on different cable: V.35, V.24 or E1)

    Alarm and indication:sync loss alarm, transceiving data and clock indication,

    handshaking indication

    Power supply: 5V switch power supply, power consumption less than 3W
    Dimension: 170L × 95W × 34H (mm)

    Operating temperature: 0+40

    Store temperature: -20~+70

    Relative humidity: 0%90%(no coagulation)


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