Product page

Model 458-3SLB

Model 458-LM-A1-30
Multi-Standard Local Loop Simulator
with Optional AWGN Generator

Main Features

  • Simulates 26 AWG PIC as specified in ANSI T1.417
  • Bandwidth DC to 30 MHz
  • Solution for ADSL, ADSL2, ADSL2+, & VDSL2 chip/modem/DSLAM testing
  • Loop lengths programmable from 0 to 24,000 ft in 25-ft increments
  • Plugs into our Model 458-CC-16 (16-slot) or 458-3SLB (3-Slot) chassis
  • Loop Lengths and AWGN levels can be controlled manually via front panel of chassis, or remotely via RS-232, Ethernet or IEEE-488 (GPIB)
  • Control using 458 Universal GUI software
  • Optional White Noise (AWGN) Generator (-90 dBm/Hz to -145 dBm/Hz)
Download pdf

product overview

The Model 458-LM-A1-30 Multi-Standard Local Loop Simulator is the ideal solution for ADSL, ADSL2, ADSL2+, and VDSL2 chip/modem/DSLAM testing out to 24,000 feet in very small increments. Optional noise modules may be ordered that add in AWGN on the CO and/or CPE side, depending on the configuration purchased. The ultimate configuration allows for common or independent noise levels on both sides.

This powerful local loop simulator is plugged into our Model 458-3SLB (3-Slot) or 458-CC-16 (16 Slot) chassis where settings are controlled by a convenient keypad located on the front, RS-232, Ethernet or IEEE-488(GPIB). The modular design of Telebyte's products allows the 458-LM-A1-30 to be combined with other line modules for a wide variety of test configurations.

Ordering Options
458-LM-A1-30 Multi-Standard Local Loop Simulator Local Loop without noise
458-LM-A1-30-AWGN1 Multi-Standard Local Loop Simulator
with (1) AWGN Generator Module.
Local Loop with one noise source at
the CO and/or CPE end
458-LM-A1-30-AWGN2 Multi-Standard Local Loop Simulator
with (2) AWGN Generator Modules
Local Loop with two independent noise
sources at the CO and/or CPE end

Product Specifications

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator with Optional AWGN Generator
SimulationAccurately simulates attenuation and impedance.
Full bidirectional operation at all specified frequencies
26 AWG PIC as specified in ANSI T1.417
Optional White Noise (AWGN) Generator
Bandwidth DC to 30 MHz.
Attenuation Accuracy
(when source and load
impedances are 100 ohms)
MAE < 1 dB 20 kHz to 30 MHz
Maximum Attenuation > 90 dB
Impedance Accuracy Typically +/- 10% 20 kHz to 30 MHz
Maximum Voltage Tip - Ring 200 V
Maximum Current 130 mA
Connectors 2 RJ-45's on front
Optional White Noise (AWGN)
Generator (add-on sub-module)
-90 dBm/Hz to -145 dBm/Hz in 0.25-dBm increments

Specifications are subject to change without notice. Made in USA