Keysight TS-5020 - System Grounding

4-22 TS-5020 Automotive Electronics Functional Test System Wiring Guide and Hardware Reference
4 System Interconnects
System Grounding
The Keysight TS-5020 Test System has these grounds:
• System Ground:
• Earth referenced ground used by customer-supplied earth
referenced instruments.
• Power Supply Grounds:
• Floating ground from the UUT Power Supplies.
• Safety or Earth (Earthed) Ground:
• This is typically a high current/high noise ground. It
connects the instrument rack to safety or earth ground
(see below).
Keysight recommends that you connect all grounds together at
the UUT (forming a star pattern).
Figure 4-20 Recommended System Grounding
Measurement
Test Po i n t s
UUT
Test
Fixture
Unit Under test
(UUT)
UUT
Ground
UUT Com
System Ground
Power Ground
Safety Ground
TC1/TC2
Connector
Safety
(Earth) Ground
Channel Shorted
PB2
PB1
UUT
Power
Supply
Connection between system and
Safety Ground is made by Mass
Interconnect and Instrument
Earth Referenced Instrument
i.e. Event Detector
Floating Instrument
High Accuracy Signal
Measurements i.e. DMM
Load Card
M
M