User`s guide

9
Safety Information
Safety Information
Warning To avoid personal injury and to prevent fire or damage to this product or products
connected to it, review and comply with the following safety precautions. Be aware that
if you use this probe assembly in a manner not specified, the protection this product
provides may be impaired.
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Observe Maximum Working Voltage
To avoid injury, do not use the N2791A probe above 1000 Vrms CAT II (both 10:1 and
100:1 attenuation settings) between each input lead and earth or between the two input
leads. Do not use the N2891A probe above 5000 Vrms CAT I (1000:1 attenuation) or 500
Vrms CAT I (100:1 attenuation) between the two input leads. Do not use the N2891A
probe above 5000 Vrms CAT I (both 100:1 and 1000:1 attenuation settings) between each
input lead and earth.
Must be Grounded
Before making connections to the input leads of this probe, ensure that the output BNC
connector is attached to the BNC channel input of the oscilloscope and the oscilloscope
is properly grounded.
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Use Fused Test Prods if Necessary
If this probe is intended to be used with circuits of installation category II, it should
incorporate the fused test prods.
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Do Not Operate Without Covers
To avoid electrical shock or fire hazard, do not operate this probe with the covers removed. 
Do Not Operate in Wet / Damp Conditions
To avoid electrical shock, do not operate this probe in wet or damp conditions. 
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Do Not Operate in an Explosive Atmosphere
To avoid injury or fire hazard, do not operate this probe in an explosive atmosphere. 
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Avoid Exposed Circuit
To avoid injury, remove jewelry such as rings, watches, and other metallic objects. Do
not touch exposed connections and components when power is present.
Use Proper Power Source
To ensure this probe functions well, use four AA batteries or the supplied USB power cord.
For Indoor Use Only
Only use this probe indoors.
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