3M Dynatel945DSP

Listing description

Complete Testing of POTS Loops
The 3M™ Dynatel™ 945DSP Subscriber
Loop Tester is a low-cost microprocessorcontrolled test set that provides full-featured
POTS testing.
The Dynatel 945DSP performs a wide
range of voice band tests to analyze problems
on twisted pair cables. Speci?c tests and
measurements performed by the unit include:
• Voltage (V) – detects and measures the
presence of central of?ce or foreign DC
and AC voltages on R-T, R-G and T-G.
• Current (mA) – measures DC loop current.
• Ground resistance – when measuring mA,
press the set up key to measure and display
the ground path resistance (when supported
by the switch).
• Resistance Test (O) – measures conductor
and insulation resistance up to 30
megohms. Accurate readings in the
presence of foreign voltage. Full
autoranging.
• Insulation Soak Test – monitors the
leakage resistance from the test leads to
ground and indicates changes in the
insulation resistance over time in the
presence of high voltage.
Increasing
resistance is an indication of a wet fault
and decreasing resistance is an indication
of oxidation which is breaking down and becoming more
conductive.
• Opens – Measures the open length of tip, ring or cable
pair at distances up to 100,000 ft, (30 km).
• Tone – provides 577 Hz ID tone for conductor
identi?cation, and 404, 1004 and 2804 Hz precision
tones for determining circuit loss.
• Loss – measures voiceband loss up to 5KHz, displaying
frequency and level.
• Noise – measures circuit noise and power in?uence, and
displays calculated balance.
C-Message Weighting is used in the U.S. and Canada,
and a Psophometric Filter where ITU (CCITT) Standards
are used.
• Longitudinal Balance – this test provides active
measurement of line balance.
• Dial Key – allows storage of 10-14 digit numbers for
testing of active lines.
Flexible, practical features
The 945DSP Subscriber Loop Tester is designed for
functionality and ease of use. Features include:
• Self-calibration.
• Graphical user interface – user-friendly, icon-based
display of test results.
• Replaceable test leads.
• Backlit high resolution/high contrast LCD display.
• Simultaneous display of T-R, T-G and R-G readings in
Ohms, Volts and Opens.
• Accepts Alkaline, Ni-Cad or NiMH batteries.
Rugged, weather-resistant design
The 945DSP test set is housed in a lightweight, hand-held
case for portability and ease of handling. The unit is
weather-resistant and weighs only 1 lb (0.5 kg).
The Dynatel brand and its distinctive Dynatel yellow
color are your assurance of rugged dependability.

This equipment is located in CA