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English/Espanol
ThankThank You...You
for purchasing Power Probe’s Scream’N Continuity Tester (SCT). We made it Scream’N to eliminate the frustration
of working with weak sounding continuity testers. The SCT volume is adjustable so you can make it scream, or adjust it for quieter work environments as well. Your new SCT emits two distinct tones enabling you to differentiate between circuits above or below 10 ohms. The SCT also emits a warble tone when it detects over 6 volts.
The SCT has high quality gold plated 4 mm banana jacks on both the tip and at the end of the green lead ensuring compatibility with all your standard 4mm plugs, piercing probes, test leads, etc. The 4mm jacks also make connecting your leads and piercing probes a snap. The built in headlights light up the probe area, thus eliminating the need for a flashlight.
The 10 foot long green lead keeps everthing within reach. Should you find the need for a longer lead we have included a 10 foot green extension lead. The SCT is powered by two AA batteries. The automatic shut-off maximizes battery life.
Safety Tip
Before performing any electrical test Power Probe strongly recommends you read this instruction booklet carefully.
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Features
Probe Tip
#PN3015-RED
Gold plated
Banana Jack
Headlights
Lights
On/Off
Push & hold both buttons for 1 second instant off
Standard 4mm connectors make adding new adapters easy...
Alligator Clip #PN024
Gold plated Banana Jack (Pigtail)
Volume
Control (low, loud, and Scream’n)
10 foot Lead
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Power-On
Power-On SCT:
There are three ways to turn the SCT on:
1.Touch the tip to the green lead
2.Press the volume button
3.Press the light on-off button
Power-Off SCT:
•The SCT will shut down automatically in 5 minutes if not used.
•To shut down the SCT manually, press and hold both the “volume button” and the “light on-off button” simultaneously
for 1 second.
Headlights
The headlights can be turned on and off by pressing the light on-off button.
Adjustable Volume Levels
By repeatedly pressing the volume button on the SCT you will cycle through low, medium, and Scream’N loud audio levels. The Scream’N setting emits a signal of 100db which can easily be heard even in the noisiest environments.
Probe Tip & Auxiliary Leads/Adapters
The probe tip of the SCT can be removed by pulling it outward. The front end of the SCT is a standard 4mm Gold plated banana jack. This enables you to connect other 4mm banana plug leads and accessories into it.
Low Battery Warning
When the battery voltage drops below the operating range, you will hear a series of 3 beeps occurring in 5 minute intervals and if the headlights are on they will turn off to maximize battery life. (To replace battery see page 9)
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Adapters connected easily
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Application |
Non-isolated Circuit |
Isolated Circuit |
Continuity Testing |
|
|
When you plan to test continuity of a circuit it |
No Tone |
|
|
Tone |
|
is best to first isolate the circuit. This eliminates backfeed from parallel circuits which can lead to a misdiagnosis.
Tones
The three tones of the SCT alert you to the resistance level of a circuit.
1.LOW pitched tone indicates continuity of a circuit under 10 ohms.
2.HIGH pitched tone indicates continuity of a circuit over 10 ohms but under
1 K ohms.
3.WARBLE tone indicates a voltage from 6-24 volts.
<10
Low Tone
>10 
<1k 
6-24Volts
High Tone |
Warble Tone |
Testing a Wire for Continuity
When checking continuity of a wire the low pitched tone should sound indicating a good connection. If
the high pitched tone sounds the circuit resistance
is in excess of 10 ohms and may need closer exami- Flex and Wiggle Test nation of the connections.
Flex wire to test contact
Wiggle Test
While measuring circuits we suggest you flex or wiggle the suspected wire and listen for a change in tone. If there is a change in the tone while you are flexing or pulling the wire, you have a faulty connection and should examine it closer and repair it. A Wiggle Test is a great method to test and pinpoint both intermittent and short circuits.
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Relay Testing
The benefit of having two tones is that you can determine the relay coil from the relay contacts by listening for the high pitched tone when continuity is through the coil and the low pitched tone when continuity is across good closed contacts. (The relay coil must have over 10 ohms resistance for the high pitched tone to sound). Typical 12V automotive relay coil resistance ranges from 50 to a few hundred Ohms.
Low |
No |
High |
Tone |
||
<10 |
Tone |
Tone |
|
>1k |
>10 |
Voltage Detection
(fig.1) Connecting the SCT’s green lead to ground and then probing the tip into the positive side of a component that is not yet activated, will sound off a steady high or low pitched tone.
(fig.2) When the circuit is activated, a warble tone will sound off and alert you to the presence of voltage on the circuit.
12v |
12v |
(fig.1) |
(fig.2) |
Steady Tone |
Warble Tone |
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