User manual

GPT-9600 Series User Manual
30
ACW and DCW Grounding Mode Information
Background
For ACW and DCW tests, the GROUND MODE
is always set to ON. In the ON setting, the GPT-
9600 grounds the return terminal to the ground.
This mode is best for DUTs that are grounded
to an earth ground by their chassis, fixtures or
operation environment. This mode measures
the potential of the HIGH VOLTAGE terminal
with respect to earth ground. This means that
any stray capacitance/resistance that leaks to
earth ground will also be measured.
Example
GROUND MODE = ON, DUT grounded
High Voltage terminal
Return terminal
DUT
GPT-9600
stray
resistance,
capacitance
GROUND MODE = ON, DUT floating
High Voltage terminal
DUT
GPT-9600
stray
resistance,
capacitance
Return terminal
Ground Mode
Icon for ACW or
DCW tests
H = 2 2 . 0 m A m AL 0= 0 0. 7 4 S = 1T
CWDA CW R I DO EM T M EI
Ground mode ON
1 00
k V
AER D Y
Am