Dynatel 965DSP-A

The Dynatel 965DSP Subscriber Loop Analyzer executes a wide range of individual tests and performs automatic test routines to categorize and sectionalize problems. The 965DSP-B analyzer does not include the TDR function, the -A version does.  The hand-held 965DSP test set is housed in a lightweight, ergonomically designed case for portability and ease of handling. The unit is weather-resistant and weighs only 3.3 pounds (1.5 kg). 

Complete testing of POTS and ISDN subscriber loops

The 3M™ Dynatel™ 965DSP Subscriber Loop Analyzer is a microprocessor-controlled integrated test set that provides full-featured POTS and wideband testing. The functions include fault location and repair verification on twisted-pair, quad and coaxial cable (utilizing capacitance bridge, resistance bridge and Time Domain Reflectometer (TDR) functions).

The Dynatel 965DSP subscriber loop analyzer executes a wide range of individual tests, or performs automatic test routines to categorize and sectionalize problems. Specific tests and measurements performed by the unit include:

• Voltage – detects and measures the presence of central office (exchange) or foreign DC or AC voltages.
• Tone – provides test tones for conductor identification and transmission testing. 10 default tones, user selectable as ID tone, voiceband, or wideband. Wideband goes up to 1.2 MHz, voiceband to 20 kHz, ID tone to 1000 Hz.
• Current – measures DC loop current.
• Resistance – measures conductor and insulation resistance up to 1000 megohms.
• TDR – full-featured TDR with user-selectable pulse widths, length, gain zoom, filter and Vp. Five modes of operation:
  • Single trace – provides graphical representation of events on a pair.
  • Dual trace – allows active comparison of two traces.
  • Differential – displays difference between two circuits.
  • Crosstalk – displays the crosstalk from one pair to another.
  • Memory – allows comparison of an active trace with a trace stored in memory.
  • Peak – displays a history of maximum and minimum values with the live trace.
• Resistive fault location – displays distance to fault.
• Opens – locates opens at distances up to 100,000 ft. (30 km).
• Load coil count – indicates the presence of load coils in a loop circuit and distance to the first load coil.
• Wideband loss – loss measurements to 1200 kHz for pre-qualifying ISDN, HDSL and ADSL.
• Loss – measures voiceband loss.
• Noise – measures noise metallic and noise to ground in dBrnc or dBm0p.
• Longitudinal balance – provides active measurement of line balance.
• Autotest – allows an automatic test of active, inactive and wideband (56K/64K DDS, ISDN, HDSL, T1, E1 and ADSL) lines with pass/fail limits.
• Ground resistance – allows the 965DSP to measure the resistance of the ground path.
• Special resistance – allows the 965DSP to measure the loop resistance and the resistance difference between two conductors on a pair.
• K-Test – allows RFL measurement when both wires in a pair are faulted and there is no separate good pair available