Where can I find the frequency specifications for my tachometer?
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Joined: Dec 2012
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From: Cherry Point, Nc
Car: 1987 Camaro sport
Engine: V6 2.8L
Axle/Gears: Stock
Where can I find the frequency specifications for my tachometer?
I am trying to calibrate my tachometer with some test equipment I have available but I need to know at what frequency each RPM should read. Where can I find these specifications?
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Joined: Dec 2000
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From: stallings,n.c.
Car: 1989 camaro rs convertable
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 7.5"3.42 gears forth gen 2000 camar
Re: Where can I find the frequency specifications for my tachometer?
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 11
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From: Cherry Point, Nc
Car: 1987 Camaro sport
Engine: V6 2.8L
Axle/Gears: Stock
Re: Where can I find the frequency specifications for my tachometer?
This doesn't help.... I need to know the frequency specs
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Joined: Oct 2004
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From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Where can I find the frequency specifications for my tachometer?
This should be correct.
Code:
Signal Hz V8 RPM V6 RPM 60 900 1200 70 1050 1400 80 1200 1600 90 1350 1800 100 1500 2000 110 1650 2200 120 1800 2400 130 1950 2600 140 2100 2800 150 2250 3000 160 2400 3200 170 2550 3400 180 2700 3600 190 2850 3800 200 3000 4000 210 3150 4200 220 3300 4400 230 3450 4600 240 3600 4800 250 3750 5000 260 3900 5200 270 4050 5400 280 4200 5600 290 4350 5800 300 4500 6000 310 4650 6200 320 4800 6400 330 4950 6600 340 5100 6800 350 5250 7000 360 5400 7200 370 5550 7400 380 5700 7600 390 5850 7800 400 6000 8000 410 6150 8200 420 6300 8400 430 6450 8600 440 6600 8800 450 6750 9000 460 6900 9200 470 7050 9400 480 7200 9600 490 7350 9800 500 7500 10000
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 11
Likes: 0
From: Cherry Point, Nc
Car: 1987 Camaro sport
Engine: V6 2.8L
Axle/Gears: Stock
Re: Where can I find the frequency specifications for my tachometer?
This is EXACTLY what I was looking for. Thank you. Where did you find this though? How sure are you that it's correct?
Supreme Member
Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Where can I find the frequency specifications for my tachometer?
Here is the App note for the driver
http://www.ti.com/lit/ds/symlink/lm1819.pdf
Basically it is frequency * 60/number of cylinders * 2 = RPM
I use 12V as my input signal level onto the tach pin.
This is only for distributor powered ignitions.
http://www.ti.com/lit/ds/symlink/lm1819.pdf
Basically it is frequency * 60/number of cylinders * 2 = RPM
I use 12V as my input signal level onto the tach pin.
This is only for distributor powered ignitions.
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MikkoV
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