VT DSO-2A20 Manual Rev. 1.1
Virtins Technology
6 Safety Instructions
!
•
Always keep in mind that the input of the probe and the input of the VT DSO are NOT
galvanically isolated from the computer connected.
•
Never connect to a signal with unknown amplitude.
•
Never connect to a signal with voltage greater than the measurement range.
•
If you are not very sure about the exact voltage under test, always start measurement by
putting the attenuation switch of the oscilloscope probe to
×
10 and selecting the highest
measurement range of the VT DSO unit.
•
When the input peak level indicator of the Multi-Instrument software turns full RED
(100%, see the figure below), switch the probe to a higher attenuation ratio, switch the
VT DSO unit to a higher measurement range, or disconnect the input signal immediately.
•
Be extremely careful when the voltage under test is greater than 5V.
•
It should be noted that for many computers (typically desktop PCs or laptop PCs with a
built-in AC power supply adapter), the ground line of the probe is connected to mains
earth. This is not a problem if the circuit under test is floating (i.e. isolated from earth).
Otherwise, you MUST make sure that the ground lead of the probe is connected to a
point on the circuit that is also at earth potential.
7 Warranty
Virtins Technology guarantees this product against defective materials and manufacturing
defects for a period of 12 months. During this period of warranty, a replacement of the faulty
part will be shipped to the buyer's address free of charge upon receiving and verifying the
returned faulty part. The Warranty is only applicable to the original buyer and shall not be
transferable. The warranty shall exclude malfunctions or damages resulting from acts of God,
fire, civil unrest and/or accidents, and defects from using wrong electrical supply/voltage
and/or consequential damage by negligence and/or abuse, as well as use other than in
accordance with the instructions for operation. The Warranty shall immediately cease and
become void if the hardware is found to have been tampered, modified, repaired by any
unauthorized person(s). Decisions by Virtins Technology on all questions relating to
complaints as to defects either of workmanship or materials shall be deemed conclusive and
the buyer shall agree to abide by such decisions.
8 Disclaimer
This document has been carefully prepared and checked. No responsibility can be assumed
for inaccuracies. Virtins Technology reserves the right to make changes without prior notice
to any products herein to improve functionality, reliability or other design aspects. Virtins
Technology does not assume any liability for loses arising out of the use of any product
described herein; neither does its use convey any license under it patent rights or the rights of
others. Virtins Technology does not guarantee the compatibility or fitness for purpose of any
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