The Phase Checker allows fast testing of the polarity of acoustic transducers,
microphones and electronic devices. Sophisticated signal processing allows
fast and accurate determination of the absolute polarity unimpaired by passive
crossovers or signal waveform distortions produced by the device under test.
The test system consists of two units: the Signal Generator and the detector.
To check acoustical or electrical phasing, the Generator is connected to the input
of the device under test whereas the detector picks up the output signal. Subsequent
signal processing enables the detector to decide whether the device under test
reverses signal phase or not. The result of the test procedure is displayed via two
LEDS, the green one indicating the “in phase” and the red one indicating the “out
of phase” condition.
Due to the versatile Input/Output structure of both the Generator and the detector
any combination of acoustical and electrical input and output may be realized.
Both acoustical and electrical output.
XLR output connector may be switched to either 2 or 3 hot.
Adjustable output level with 41 – position detented pot.
Floating low-impedance balanced output.
Loudspeaker direct drive capability.
Integrated high-effeciency loudspeaker.
Both acoustical and electrical input.
3 position input selector: MIC-LINE-MIC ext.
XLR input may be switched to either 2 or 3 hot, floating balanced – unbalanced.
Integrated condenser type microphone.
Epoxy encapsulated shock-proof ciruitry.
2 LED coloured display.
Rugged die-cast enclosure.
Exclusive use of high-grade components, e.g. gold-plated switches, for maximum riliability.
Power supply (each device):
1 PP3 size 9 V battery.
Battery life: 50 hours using alkaline cells.
Output level: > + 6 dBv peak
Min. source impedance: < 10 Ohms
Puls spectrum covers entire audio frequency range.
Line input impedance: 10 KOhm
Mic. ext. input impedance: 1 KOhm
Min. MIC input voltage: 10 mV
Min. LINE input voltage: 250 mV
Max. LINE input voltage: 50 V