Knowledge Base
Frequently Asked Questions
Does my AutoStrobe 590 require calibration?
Unlike more modern Peterson strobes, legacy models such as the Peterson 400, 420, 450 and 700 do require occasional calibration.
If you require service, please open a support ticket and return the tuner for repair.
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How do I read a strobe display?
Adjust your instrument until the pattern is as close to still as possible. Strobe displays are 'real-time' and extremely precise. They require very fine tuning adjustments to stop the display because the frequency/pitch of any instrument is never totally stable.
You'll quickly learn to read the display, make the most precise adjustments and appreciate the high resolution that only a Peterson provides.
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Is the accuracy the same for all Peterson tuners?

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What is my AutoStrobe 590’s Sweetened Tunings feature all about?

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Is there a carrying case available?
Cases are available for the AutoStrobe™ line, the StroboClip HD and the StroboPLUS HD/HDC.
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How accurate is my AutoStrobe 590?

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I often tune my acoustic instrument in a loud environment. What's available to help with that?
A Peterson TP-3 clip-on tuning pickup is a very versatile device with a 1/4" connector that can be clipped onto any portion of the instrument that vibrates, such as the headstock of a guitar or the bell or lead pipe of a horn.
A Peterson Pitch Grabber Mobile Tuning Clip utilizes a 1/8" connector for use in mobile phones or tablets with software tuners.
For instruments with a flat resonating surface, you can use a suction cup tuning pickup to reduce ambient noise interference.
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How do I send my product in for repair?
All products returned for service must have a support ticket number on the outside of the box as well as on the accompanying paperwork on the inside of the box. If you have not registered your tuner, you must do so before returning it. Include a description of your problem. Please be specific about the type of malfunction as well as the conditions under which it occurs.
There is a minimum charge of $80.00 US plus a shipping charge for all Mechanical Peterson tuners received and a minimum charge of $40.00 US plus a shipping charge for all LCD Peterson tuners (unless subject to Peterson warranty). Payment options include PayPal, VISA, MasterCard, AMEX and Discover Card.
NOTE: For international (non-USA) repairs and for all Conn tuner repairs, a different procedure may apply. If you would like an advance estimate for service, you must include a request in writing with the tuner you ship.
Contact and Shipping Details:
For service of Peterson tuners:
Peterson Electro-Musical Products, Inc. 11601 South Mayfield Ave. Alsip, IL 60803 USA
TEL: 708-388-3311 (ext. 143) FAX: 708-388-3341
Email: techwest@petersonemp.com
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My AutoStrobe is not tracking the note I am playing. What do I do?
Look at the LCD display directly over the button labeled 2. AUTO will automatically detect the note you are tring to tune. MAN (manual mode) will only respond to the note it is currently set to detect.
If your tuner is set to 'MAN', simply pressing the Auto/Man button again will toggle you back into manual mode.
If it still seems as though your tuner is having difficulty tracking in 'Auto' mode, there could be a problem with either the built-in microphone or the input jack.
If you usually tune with the built-in microphone, attempt to send a tune-able signal into the input jack with a standard guitar cable or a microphone with a 1/4" connector. If you are able to track a note using this method, then one of the following two scenarios applies: 1.) Your built-in microphone is malfunctioning and you need to open a Help Ticket to service your tuner. 2.) You do not have a loud enough signal for the microphone to pick up, and you may consider the use of a tuning pickup such as the Peterson TP-2.
If your tuner still does not respond to a hard-wired signal, please open a Help Ticket in order for us to service your product.
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What is the frequency response range of the AutoStrobe 590?
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What are the dimensions of the AutoStrobe 590?
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What is the note range of the AutoStrobe 590?
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What should I do if my new Peterson product doesn't seem to work properly?
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What is the range of Hz calibration or Concert A calibration of my AutoStrobe 590?
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How do I find out how far out of tune my guitar is in cents?
The following video shows this process using a StroboPLUS HD.

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Not finding an answer? Open a support ticket for personalized support of your Peterson product.
Product Manuals
Not finding an answer? Open a support ticket for personalized support of your Peterson product.
Firmware History