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ASV 3270

Automotive Audio Tester

User Manual

airsoundvision.com

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Summary of Contents for 3270

Page 1: ...ASV 3270 Automotive Audio Tester User Manual airsoundvision com ...

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Page 3: ...ts a test tone at line level that can be used to check ampliﬁers 4 Speaker Polarity Phase Test By playing a special test tone on the head unit and connecting the 3270 to speaker wires the installer can instantly determine which wire is positive and which negative 5 Speaker Test The speaker test mode allows the installer to quickly test if a speaker works It also pulses the speaker with a 200mA cur...

Page 4: ...4 On Line The latest version of this manual polarity test tone MP3 ﬁle and instructional videos can be found on our web site http airsoundvision com asv3270 ...

Page 5: ...ASV 3270 is not operated for more than approximately 5 minutes it will switch itself off to conserve the battery Disabling Auto Power Off It is possible to temporarily disable the Auto Power Off function by holding down the Mode button for 10 seconds when switching on the ASV 3270 All the LEDs will ﬂash several times to indicate that the Auto Power Off function has been disabled This will be reset...

Page 6: ...LED B will light indicating a nominal 24V To ﬁnd a wire with ground on it connect the red lead to a known source or 12V or 24V and probe the wire of interest with the black lead CAUTION In order to minimise the risk of damage to the electronic equipment found in modern cars the ASV 3270 s input impedance in voltage test mode is quite high approximately 48000 Ohms This means the installer needs to ...

Page 7: ...need to turn the volume on the head unit up to maximum Tip Connecting to a video source will produce a buzz indicating the presence of a video signal Mode 3 Line Output Tone Using a 3 5mm to RCA lead connect the ASV 3270 to the input of an ampliﬁer you want to test In this mode the ASV 3270 outputs a nominal line level signal CAUTION Make sure the gain of the ampliﬁer under test is set low to star...

Page 8: ...Windows Media Player or third party software to create an Audio CD from this ﬁle Once you have downloaded the ﬁle and created the required media start playing the ﬁle in the head unit at a moderate volume Connect the ASV 3270 to a pair of speaker wires If LED A lights the speaker wire connected to the red test lead is positive NOTE 1 Some equipment will introduce phase reversal over the entire sys...

Page 9: ...duced Use this pulse to check the polarity of the speaker by feeling for movement of the speaker cone If the red wire is connected to the positive speaker wire the cone will move outwards during the pulse otherwise it will move inwards Speaker test mode is also very handy to check that no speaker wires are shorted to ground Connect the black lead to ground and the red lead to one of the speaker wi...

Page 10: ...ive an indication of battery status while the Mode button is depressed If all 4 LEDs illuminate there is plenty of charge remaining The number of LEDs will decrease according to the remaining capacity If the battery is too low to properly operate the unit the Empty LED will ﬂash ...

Page 11: ... Test Mode Input Impedance 95KOhm 5 Test Tone 200Hz Pulse 75 Duty Cycle Minimum Valid Signal Level 900mV p p 10 Maximum Valid Signal Level 20V p p 10 Speaker Test Mode Maximum Output Voltage 9V p p Maximum Output Current 250mA Nominal 200mA Short Circuit Range 0 1 5Ohms 5 2 Ohm Range 1 5 3Ohms 5 4 8 Ohm Range 3 9Ohms 5 Output Frequency 220Hz 10 Battery Type 9V Alkaline Battery Working Voltage Rang...

Page 12: ...12 airsoundvision com ...

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