TA042 Datasheet, PDF (2/4 Pages) List of Unclassifed Manufacturers – 100 MHz x100/x1000 Differential Probe Users Manual

2. General safety summary
Please review the following safety precautions to avoid injury and prevent damage
to this probe or any products that are connected to it.
Observe maximum working voltage
To avoid any injury, do not use the probe above 1000 V rms CAT III between each
input lead and earth or between the two input leads. This voltage rating applies to
both the 1/100 and the 1/1000 settings.
Must be grounded
This probe is grounded with the shell of the BNC connector and an auxiliary
grounding terminal.
WARNING
Before making connections to the input leads of this
probe, ensure that its output lead is grounded. You
may do this either by connecting the BNC shell to a
grounded measurement instrument, or by
connecting the auxiliary grounding terminal to a
reliable ground point. Read the next paragraph for
further advice.
You must verify that the probe is securely grounded before connecting the probe
input leads. Some types of measuring instrument, such as a USB oscilloscope
connected to a laptop, are unlikely to be grounded even if the laptop is powered
from the mains. Bench-top oscilloscopes are usually grounded, but in some cases
may have been isolated from ground. A USB oscilloscope connected to a desktop
computer is usually grounded. In any case, do not assume that the measurement
instrument is grounded. Always verify the ground connection for yourself
before connecting the probe input leads.
Use fused test prods if necessary
If this probe is intended to use for measurements in circuits of INSTALLATION
CATEGORY III, it should incorporate with fused test prods.
Do not operate without covers
To avoid electric shock or fire hazard, do not operate this probe with the covers
removed.
Do not operate in wet or damp conditions
To avoid electric shock, do not operate this probe in wet or damp conditions.
Do not operate in explosive atmosphere
To avoid injury or fire hazard, do not operate this probe in an explosive atmosphere.
Avoid exposed circuitry
To avoid injury, remove jewelry such as rings, watches and other metallic objects.
Do not touch exposed connections and components when power is present.
2
© Copyright Pico Technology 2008
DO137-1
8. Derating curve
The derating curve for absolute maximum input voltage is as follows:
10000
1000 ¹⁰⁰⁰
100
10
1.0E+05
1000
1.0E+06
1.0E+07
Frequency (Hz)
20
1.0E+08
9. Overrange indicator
The overrange indicator lights up red if the voltage of the input signal exceeds the
linear operating range of the probe. When this happens, the signal on the probe
output may not accurately represent the signal on the probe input.
10. Test procedure
a. Connect the BNC output connector to the vertical input of a general-purpose
oscilloscope.
b. Install four AA cells or connect an appropriate mains adaptor to this probe.
c. Set the oscilloscope input coupling to DC and 1 V/div. Center the trace on the
display.
d. Connect the sprung hooks of the probe to power lines.
e. Set the range of the probe to 1/1000.
f. A 50 Hz / 60 Hz sine-wave of proper amplitude will be displayed on the screen
of the oscilloscope. This means the probe is working properly.
11. Cleaning
Use a soft cloth to clean the probe, taking care not to cause damage.
a. Do not immerse the probe.
b. Do not use abrasive cleaners.
c. Do not use chemicals contains benzene or similar solvents.
DO137-1
© Copyright Pico Technology 2008
7