T-Bug 134A / E-BugTM 135A 

Digital Signal Identifier 

 

Locate circuits carrying digital signals. Now detects ADSL .

The T-Bug/E-Bug Digital Signal Identifier is a hand-held probe used by technicians to detect digital signals on twisted pair cables and terminals.  It is used to identify and isolate digital circuits for special handling and to help technicians avoid accidentally putting these circuits out of service.  Proper use of the T-Bug can help eliminate customer complaints associated with digital circuit handling throughout the outside plant.

The T-Bug is simple to operate and constructed for rugged field use.  Operation is non-intrusive and does not involve metallic contact so working digital circuits can be identified without risk of service interruption.

Use in the Field or Central Office

The T-Bug can be used either in the field, Central Office or other locations by technicians in OSP construction, maintenance, or special services during operations such as cable transfers, section replacements and cable testing.  It can be used at the main frame, in a splice, pedestal, cross-connect box, or remote terminal.

Bands Detected

The T-Bug will detect digital signals in several frequency bands.  including T1/E1, HDSL and ADSL.  See Specifications for bit rates detected.

Listen to the Actual Bit Stream

The T-Bug provides both an audible and visible indication when digital signals are present on a cable pair.  The visible indicator is the red LED which brightens in proportion to the signal strength encountered.  The audible indicator is the sound of the actual digital signals being transmitted on the pair which are reduced to audible range through the T-Bug’s unique hetrodyne receiver.  By listening to the actual bit stream on the pair, a technician can detect the type of signal present.

Elimination of False Alarms

Another feature unique to the T-Bug is its differential probe.   This allows a technician to determine whether the digital signals detected are truly present on a pair, or merely induced signals from adjacent pairs.  When the T-Bug probe tip is placed between the ring and tip (A and B) of the pair, metallic signals between the ring and tip are enhanced while induced common mode signals are cancelled out.  In addition, false readings due to noise are virtually eliminated.

Power On and Battery Test

The ON/SEL pushbutton turns the unit on for approximately 200 seconds and automatically checks the battery.  When turned on, the T-Bug will “tick” once per second.  The tick tells the user the T-Bug is on and also serves as a continuous self-test, assuring the user that the unit is functioning properly.

Probe Operation

With the unit on, the probe end is placed against the pairs in question.  If digital signals are present, the T-Bug will emit an audible and visible indication.  Both indica-tions get stronger as the T-Bug gets closer to the signal source making it easy to isolate the digital pairs.

Isolating Individual Pairs

To confirm digital signals on a suspect pair, simply place the probe tip between the ring and tip of the pair.  If the signal increases, there is a digital source present.  If the signal decreases, it is a coupled signal and not a true carrier

Specifications:

Size:  9.4 x 2.1 x 1.6 inches (24 x 5 x 4 cm)
Weight: 13 oz. (0.4 kg)
Power:  One 9V NEDA 1604 battery (spare supplied)
Battery Life:   350 Power On cycles per battery minimum

Bit Rates and Carrier Types Detected:

T-Bug Digital Signal Identifier, Model 134A

T1:  detects 1.544 Mb/s carriers which include T1, SLC-96, DMS-1 Urban, MS-43 and Primary Rate ISDN

HDSL/56Kb:  detects 56 Kb/s and 64 Kb/s  carriers, which include DDS, HDSL and Basic Rate ISDN

ADSL:  detects ADSL-DMT per ANSI T1.413

E-Bug Digital Signal Identifier, Model 135A

E1:  detects 2.048 Mb/s carriers which include E1 with HDB3 line coding, and other carriers based on 2.048 Mb/s data rates

HDSL/64Kb:  detects 56 Kb/s and 64 Kb/s which include DDS, HDSL and Basic Rate ISDN

ADSL:  detects ADSL-DMT per ANSI T1.413

Ordering Information

Please order by model number.  Each T-Bug is shipped complete with tool belt clip, soft carrying case, batteries and operating instructions.

T-Bug Digital Signal Identifier, Model 134A

E-Bug Digital Signal Identifier, Model 135A

 

Important notice to purchasers

All statements, technical information and recommendations contained herein are based on information we believe to be reliable, but the accuracy and completeness thereof is not guaranteed, and the following is made in lieu of all warranties, expressed or implied:

Industrial Technology, Inc.’s only obligation shall be to repair, replace or adjust any T-Bug/E-Bug that proves to be defective within one year after shipment to the original purchaser.  This warranty does not include batteries or normal wear and tear, and does not include units which in the opinion of Industrial Technology, Inc. have been subject to neglect or abuse or units which have been altered in any way.

Neither seller nor manufacturer shall be liable for injury, loss or damage, direct or consequential, arising out of the use of this product.  Before using, user shall determine the suitability of the product for his intended use, and user assumes all risk and liability whatsoever in connection therewith.  No statement or recommendation  contained herein shall have any force or effect unless in an agreement signed by officers of Industrial Technology, Inc.

T-Bug is a registered trademark of Industrial Technology, Inc.  Manufactured under U.S. Patent numbers 5,140,614, 5,297,167, and 5,703,928.  E-Bug is a trademark of Industrial Technology, Inc.  Other trademarks are the property of their respective companies.  ©2000 Industrial Technology, Inc.  All rights reserved. No portion of this work can be duplicated or copied in any form without the express permission of Industrial Technology, Inc.