Public Address (PA), Paging & Background Music Systems : Public Address (PA) Systems : Gold Line - APT2

Absolute Polarity Tester with Pulse Generator

Model: APT2

Drives Amplifiers Directly
Drives Speakers Directly
Auxiliary Microphone Input Supplied
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Rugged High Impact Cases

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The Gold Line Polarity Analyzers utilize state of the art signal processing to accurately determine absolute polarity which is unimpaired by passive crossovers or signal waveform distortions produced by the device under test.

The APT2 works on tweeters, mid-ranges, woofers, subwoofer speakers and cabinets, equalizers, amplifiers and crossovers.

With this handy instrument an entire speaker system can be checked in only seconds.

The Polarity Detector (APT) and Pulse Generator (PG) are supplied as separate units.

U.S. PATENT 5,319,714

Drives Amplifiers Directly
Drives Speakers Directly
Auxiliary Microphone Input Supplied
Battery Powered
Rugged High Impact Cases

Tester Format - Handheld
Analyzer Signal Type - Other

Inputs - APT2::
APT: 1/4" Phone jack - auxiliary microphone input - impedance 20k ohms
Outputs - APT2::
PG: 1/4" Phone jack - to drive loudspeaker directly - impedance 4 - 16 ohms
......: 1/4" Phone jack - to drive amplifier directly - impedance 50 ohms
APT: None
APT Microphone: Built-in omnidirectional electret condenser.
Required Acoustic Level At APT: 70dBc to >110dBc.
APT Display:
Single LED for positive-going pulse polarity. 300ms ON duration.
Single LED for negative-going pulse polarity. 300ms ON duration.
PG Display: Single LED positive-going pulse with 1s repetition rate.
PG Line Pulse Output:
Amplitude: APT2 - 0.4V peak typical / APT2B - 0.8V peak typical.
Rise Time: <100 µs.
Fall Time: 40ms typical.
Duty factor: 0.3% typical.
Battery Drain: 1.1mA average.
Amplitute: 6.5V peak (14 watts) to 4 ohm loudspeaker.
Rise Time: <100 µs.
Fall Time: 1.5ms typical.
Duty factor: 0.15% typical.
Battery Drain: 3.2mA with 4 ohm loudspeaker.
POWER REQUIREMENTS::
APT: 9V battery
Size (W x H x D); Weight::
APT: 3" x 5½" x 1-3/4"; 7 oz.
Case Material: High impact ABS
Input Impedance: 20000 ohm
Output Impedance: 50 ohm
Depth: 44.45 mm
Height: 139.70 mm
Width: 76.20 mm
Product Weight: 0.20 kg

Gold Line APT2 Manual.pdf 27 kb - Instructions

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