Owon SDS series User Manual page 8

Warning
:
The channels should adopt common basis during measuring. To prevent short
circuits, the 2 probe ground must not be connected to 2 different non-isolated DC
level.
The diagram of the oscilloscope ground wire connection:
Signal Input
Ground Clip
The diagram of the ground wire connection when the battery-powered oscilloscope is
connected to the AC-powered PC through the ports:
Probe
Signal Input
Ground Clip
It is not allowed to measure AC power when the oscilloscope is AC powered, or when
the battery-powered oscilloscope is connected to the AC-powered PC through the
ports.
Warning:
To avoid fire or electrical shock, when the oscilloscope input signal
connected is more than 42V peak (30Vrms) or on circuits of more than
4800VA, please take note of below items:
Only use accessory insulated voltage probes and test lead.
Check the accessories such as probe before use and replace it if
there are any damages.
Remove probes, test leads and other accessories immediately after
use.
Remove USB cable which connects oscilloscope and computer.
Do not apply input voltages above the rating of the instrument
because the probe tip voltage will directly transmit to the
oscilloscope. Use with caution when the probe is set as 1:1.
Do not use exposed metal BNC or banana plug connectors.
Do not insert metal objects into connectors.
2.Safety Terms and Symbols
Probe Oscilloscope
Oscilloscope
(Battery-power)
USB/VGA/COM/
LAN Cable
3
Electrical Outlet
Power Cord
PC Electrical Outlet