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The Pico 12 Channel
Secondary Ignition Signal Mixer


Designed for use with the Automotive Oscilloscope Kit, Mixmaster can also be used on virtually any other lab scope.

  • Description
  • Contents
  • Specifications
  • Examples
  • Shipping

Pico Technology's Mixmaster PP361

Use with a a 4 or 8 channel scope for best results.

Mixmaster can produce a parade display of up to 12 cylinders using a single channel of your lab scope. If you have a 2-channel scope, then Mixmaster can also display 2 engine banks separately with up to 6 cylinders per bank. A third channel is required to sync a cylinder for firing order reference.

Mixmaster includes a trigger output, derived from one of the 12 input signals, which can be used to synchronise the scope to a known cylinder. Additionally, Mixmaster features a simple switch so you can invert a bank of signals to deal with negative-going signals on waste-spark systems.

We do not recommend using the Mixmaster on distributor systems, the Mixmaster is most effective on waste spark systems.

 Mixmaster is battery powered and includes a low-battery indicator. The shockproof rubber case makes Mixmaster suitable for heavy-duty workshop use and incorporates a handy stand to make it easier to use.

Mixmaster is a cost-effective way to display parade ignition waveforms on your lab scope. Compact and battery powered, it is ideal for mobile automotive diagnostics, and makes a valuable and inexpensive addition to your tool kit.

Use a Snap On Scope?  Mixmaster works great with Snap On. The attenuation on the Mixmaster is 10,000:1.  This compares with the Snap-On secondary probes attenuation of 5000:1.  Snap On has no way to set up a different range for scaling other secondary probes.  So, roughly double the given readings from a Mixmaster to get true KV.  Pretty simple.  Here is a little movie demo of Modis meeting Mixmaster.

• 1 Mixmaster Secondary Mixer
• 1 Protective Rubber Boot
• 4 Secondary Test Leads (extras are available)
• 1 Ground Lead
• 3 BNC/BNC Scope Connection Cables
• 1 Set of Colored I.D. Bands for Secondary Leads
• 1 User's Guide


Mixmaster 12-Channel Ignition Signal Mixer

Analog bandwidth

170 kHz

Bank A and B inputs

12 x BNC female
91 kΩ resistance
-2 V to +2 V (operating)
-4 V to +4 V (absolute maximum)

Oscilloscope outputs
Output level

3 x BNC female
-2 to +2 V

Environment limits:
Operating temperature
Operating humidity
Storage temperature
Storage humidity

0 °C to 45 °C
5% to 80% RH, non-condensing
-20 °C to +60 °C
5% to 95% RH, non-condensing

Power supply

9 volt PP3 battery

Battery life

48 hours approximately (power on, idle)


221 x 115 x 58 mm
(8.7 x 4.5 x 2.3 in)
including rubber case


1997 Dodge Intrepid 3.5

Channel A: cyls 1,3,5

Channel B: cyls 2,4,6

Channel C: #1 sync

FO: 123456


The ‘Adario Method ’ shown above splits the positive and negative ignition firings between two channels enabling the observation of all waste and power firings simultaneously while a third channel can be used for sync.  





2001 Ford Windstar 3.8 IEDIS

Channel A: all cylinders power events

Channel C: #1 sync

FO: 142536

In the above Windstar example, we have multiplexed all the ignition power firings on one channel while using a second channel for #1 sync.  This is a multistrike system.





In this spit bank capture of the 2001 Windstar, we have zoomed in on the moment the system switches from multistrike to single strike




2006 Ford Ranger 4.0 split bank capture




The 2006 Ranger with all power firings on one channel with #1 sync under snap accel

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Customers outside North America:
We always recommend sourcing PicoScope products locally, but you are welcome to contact us for a quote. The online shopping cart will not accept international orders. when contacting us, please list any items you are interested in along with a street address for an accurate quote. We will then email a quote and an invoice if you decide to proceed. We have a secure online credit card payment method for international orders, we also accept Paypal.

United Kingdom customers: Please contact our partner LMH Engineering Services.


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We do not recommend using our colored 1000:1 secondary leads with the Mixmaster, use the Pico 10,000:1 secondary leads.

Mixmaster 12 channel signal mixer $411.00


Add an extra four Mixmaster secondary leads for $108