Getting started
AFG31000 Series Arbitrary Function Generator User's Manual 29
Floating ground
Because the common ground (input and output channel common) of the AFG31000 Series is
electrically isolated from the chassis ground (the instrument chassis and ground line of the AC
connector), you can make a floating connection between the instrument and other equipment.
All the signal output connectors are connected to the common ground, and the remote interface
connector is connected to the chassis ground.
WARNING. To avoid personal injury due to electric shock, use this product so that the sum of the floating
voltage and the output voltage of the instrument does not exceed 42 V
pk
. Do not touch the center of the BNC
connector while the equipment and instrument are in use.
CAUTION. The maximum rated voltage between the chassis ground and common ground is 42 V
pp
(DC + peak
AC). When the potential voltage between the chassis ground and common ground goes over 42 V
pp
, the
internal protective circuit is activated to protect the circuits. However, voltages continuously exceeding 42 V
pp
may cause the internal circuits in the instrument to be damaged.
When a potential voltage exists between the chassis ground and common ground, a short circuit from output to
ground causes the instrument internal fuse to open and the output is stopped. If the fuse opens, you need to
contact your local Tektronix Service Support. When a potential voltage exists between the common ground and
chassis ground, short-circuiting between them may lead to excessive current flow and the internal or external
Figure 3: AFG31000 Series floating ground