Scope Multimeter Operation and Controls
93
Frequency is the number of times a signal repeats itself per second and is
measured in hertz (Hz).
The frequency value displayed, is the inverse of the Delta value, and can also
be calculated as 1 divided by Delta. The frequency value (Hz) shown is
automatically calculated by the scope.
Example 1: Delta = 20.46ms, to get frequency divide 1 by .02046 (1/.02046
= 48.87Hz)
Example 2: Delta = 2.53ms, to get frequency divide 1 by .00253 (1/.00253
= 395.27Hz)
Use applicable decimal point placement during division as the Delta value
changes.
9.6.4 Secondary Ignition Testing
The lab scope function can be used to display secondary ignition waveforms for
many systems (distributor, CIC - Coil In Cap, Waste spark, COP - Coil On Plug). To
display secondary ignition waveforms, optional secondary ignition coil adapter(s)
and a coil adapter lead assembly are required.
Contact your sales representative to purchase the optional adapter leads and/or
Secondary Ignition Clip-on or COP/CIC Adapters.
• Adapter lead assembly needed:
– Secondary Coil Adapter Lead Assembly - connects the diagnostic tool to a
secondary ignition adapter (yellow and black scope connectors and black
RCA type adapter connector). See Secondary Ignition Coil Adapter Lead
and Clip-on Adapter (optional) on page 76.
• Secondary Ignition Adapters available:
Different secondary ignition coil adapters are available as optional equipment.
These adapters attach to either the secondary lead (spark plug lead) or directly
to the secondary ignition coil in order to pick up the secondary ignition signal.
– Universal kV Ignition Clip-on adapter - clips over a spark plug or coil lead.
See Secondary Ignition Coil Adapter Lead and Clip-on Adapter (optional) on
page 76.
– Universal stick and flag type adapters - are loosely positioned next to or on
a secondary ignition coil.
• General purpose single flag pick-up.
• General purpose stick pick-up.
– Vehicle specific Clip-on adapters - are directly attached to (or next to) a
secondary ignition coil (COP type) or to a distributor cap (CIC type).
Secondary ignition coil-on-plug (COP) and coil-in-cap (CIC) adapters are
available for universal and engine specific applications. All the adapters
listed are available individually.
• OEM specific COP adapters:
• Ford (COP-1)
• Chrysler (COP-2)
•VW/Audi (COP-3)
• Acura/Honda/Isuzu (COP-4)
• Volvo/BMW (COP-5)
• Mercedes-Benz (COP-6)
• Mercedes-Benz Dual Type (COP-7)
• BMW (COP-8)
• Lexus (COP-9)
• Chrysler/Jeep/Lexus/Toyota (COP-11)
• OEM specific CIC adapters:
• GM HEI (CIC-1)
• Toyota/Honda (CIC-2)
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