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PCI Based Ultra T3 Analyzer

Picture of Ultra T3 Card

Overview | Features | Specifications | Screenshots | Buyer's Guide

Ultra T3 Software Ver 1.9 is Now Available! Download it here


A DS3 line (also known as a T3) is an ultra high-speed connection capable of transmitting data at rates up to 45 Mbps. A DS3 signal carries 28 T1 signals, each operating at a rate of 1.544 Mbps.

The GL's UltraT3 Cards (PCI) plug into PC expansion slots and provide digital T3 input/output for analyzing, testing, simulating, and monitoring T3 signals. A single T1/E1 input and output is provided to insert and receive T1 (or E1) signals into the T3 stream. The cards provide the capability of generating 28 DS1 or (21 E1) signals within the DS3 output.

pdf User's Guide
pdf Product Brochure
pdf GL Product Lists

The T3 Card when used in conjunction with Ultra T1 Card in same PC provides a complete DS3, DS1, and DS0 testing solutions.

The DS3 Receiver non-intrusively monitors a DS3 bit stream, and presents comprehensive diagnostics of PCM impairments and alarm messages in real-time. The input is compatible with the signal found at the DSX-3 panel, as well as at the output of a DS3 source. The user selected DS1 (or E1) is dropped or inserted at the T1/E1 output interface provided on the T3 Card.

The DS3 Transmitter can multiplex an externally supplied DS1 (or E1) bit stream into the DS3 signal. Designed to stress test M13 multiplexers and 3/1 Digital Cross Connect System.

Main Features

With Accompanying Basic Software

  • User-friendly graphical software for comprehensive monitoring and testing of a T3 line.
  • M23 and C-bit Framing Format
  • Adding/Dropping a selected DS1 signal to/from the DS3 signal.
  • Monitoring all DS3 alarms.
  • Error insertion and error counting for all major DS3 error types.
  • Transmit/Receive User selected T1 (or E1) while remaining T1s (or E1s) are Looped Back or Broadcast
  • Real-time display of DS3 signaling bits.
  • Non-Intrusive Monitoring and Time-Stamped Logging of all alarms and abnormal events
  • Unframed T3 Bit Error Rate Testing with Detailed Logging.
  • T3 line frequency and level measurement.
  • Interface options for T3 termination or T3 monitoring.
  • Clock option for internal or recovered clock.
  • Transmission and reception of Far End Alarm Channel (FEAC) codes (optional software)
  • Transmission and reception of Terminal Path Maintenance Data Link (MDL) (optional software)

With Various Optional Software (See Buyer's Guide)

  • FEAC
  • Data Link Analysis


Physical Interface

PC Interface: PCI 2.1
Card Dimensions: 5.5 in. x 4.2 in.
DS3 Interface: BNC Connectors
DS1 Interface: RJ48c Connector

DS3 Line Interface

Output Amplitude: 800mV 50mV
Output Clock Source: Internal oscillator, or recovered from input DS3
Internal Clock Freq.: 44.736MHz 5ppm
Receiver Interface: DSX-3 (Termination or Monitor)
Input Impedance: 75 Ohm
Line Code Format: B3ZS
Terminate Input Level: 0.09Vp - 0.85Vp
Monitor Input Level: 0.025Vp - 0.08Vp

DS3 Transmitter

Payloads: Framed DS3, Unframed BERT pattern, AIS, Idle
Framing formats: M23, C-bit Parity
DS1 payloads: DS1 received at RJ48c jack, DS1s dropped from input DS3, AIS
BERT patterns: 223-1 (present and future releases); 220-1, 215-1, 1100, 1010, 1000, all 1's, all 0's, user defined 24-bit pattern (future releases)
Error Insertion: FERF, FEBE, P-bit, CP-bit, M-bit, F-bit, Line Code Violation, Loss of Signal
Loopbacks: Complete DS3 signal, Selected DS1s from inbound DS3

DS3 Receiver

Framing formats: M23, C-bit Parity, Unframed (only for BERT)
DS1 Drop: Drop selected DS1 to RJ48c jack
Signal monitors: Input frequency (5ppm accuracy), Input level
Alarm monitors: Loss Of Signal, Out Of Frame, FERF, Red Alarm, AIS, Idle
Error Counters: LCV, Framing errors, P-bit errors, CP-bit errors, FEBE, Excessive Zeros

Drop and Insert from T3

Drop Drop any constituent DS1 (or E1) out of received DS3
Insert Insert DS1 (or E1) or AIS into any or all timeslots of outgoing DS3

T3 Facility Data Link (FDL)

  Send and receive HDLC formatted messages

T3 Far End Alarm Channel (FEAC)

  Send and monitor Block Oriented Codes as per ANSI

DS3 Data Channels

Supported channels: FEAC, Path Maintenance Data Link
FEAC: Send and receive Block Oriented Codes
Data Link: Send and receive HDLC formatted messages

DS1 Line Interface

Output Amplitude: 3.0V 0.2V
Output Clock Source: Recovered from a demultiplexed DS1
Line Code Format: B8ZS (present and future releases); AMI (future releases)
Receiver Interface: DS1 Termination
Input Impedance: 100 Ohm
Input Level: 75mVp to 6.0Vp (-30dBsX to +6dBsX)

* Specifications subject to change without notice.


Buyer's Guide

Item No. Item Description
UT301 T3T1 Analysis card with basic software
UT302 T3E1 Analysis card with basic software
  Optional Software
UT3001 FEAC Transmit / Receive
Optional Software for T3 Card
UT3002 Maintenance Facility Data Link
Optional Software for T3 Card
UT3003 API Development Toolkit
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