Power Probe The Hook - Manual (Page 8)

Page 8
c) Activating Electrical Components,
Current Draw testing and Calculated
resistance in ppHM:
Activating Electrical Components in PPHM is one of the main
features that make the PPH very useful. The Power Switch, (+)
and (–), behave differently according to the Switch Preferences.
Notice the Power Switch Settings on the preference line (see
section III-a). Power Switch Behaviors (see section III-d).
Arc Detect is a safety feature that will help protect your circuit,
your tip your accessories and YOU! Arc Detect will shut off pow-
er to the probe tip if an arc is detected. If you activate the probe
tip and then connect or disconnect it, causing an arc, you will
hear a short high-pitched tone to let you know it has detected
and extinguished an arc. Sometimes components that produce
excessive arcs can be difficult to activate in PPHM. You may
need to resort to Power Plus Mode (see section VI) for these
kinds of components because the Arc Detect is disabled.
Current Draw Testing and Calculated Resistance are dy-
namic tests that are performed by activating circuits or electrical
components with the vehicle’s battery power through the PPH
and measuring the Amps and Ohms. Since the measurements
are made while under power you are getting a true indication as
to its real operating integrity.
To test the current draw and calculated resistance of an
electrical component in PPHM:
1. Contact the probe tip to the positive terminal of an electric
component that is properly grounded.
2. Press and hold (+). The PPH supplies power to activate it.
During activation the PPH displays the AMMETER and OHM
METER simultaneously.
3. Read the Current Draw displayed as AMP on the screen.
4. Read the Calculated Resistance displayed as OHM on the
screen.
5. If the display shows CIR BREAKR TRIP when you attempt
to activate the electrical component, you will need to
increase the trip point by adjusting it in the Circuit Breake
preferences. (See section: III-c)
13.6V—
950Hz
0V—
– P P 3 6 V
5 0 H Z
1
9
Starter
Motor
Solenoid
clicks when
Activated
Press & Hold
the (+) Power
button
M A P 0
2 0
5 5
1 H O M 2
Load Activated
d) AC peak to peak/ Frequency
Measuring in ppHM
:
When testing circuits that generate signals or waveforms,
such as primary ignition systems, distributor pick-ups, variable
reluctance sensors, fuel metering solenoids, wheel speed,
cam and crank sensors, etc. An oscilloscope is the ideal tool.
If you don’t have an oscilloscope but still need to know if these
components are generating a signal, you can use the AC Peak
to Peak/Frequency feature of the PPH.
To test for a signal that is being generated by and elec-
tronic sensor in PPHM:
1. Adjust your AC Threshold Setting to .1 (see section III-e).
2. Probe the output terminal of the sensor and operate it.
3. You should see the Peak – Peak and Frequency in the
display, indicating a signal is being generated.
Ground
Battery Volts
Battery Volts
Press
Power
Switch
Ground
IV
Continued