NF ZM2371, Instruction Manual

Page: 43 / 255

3.4 Connection of DUT
3-13 ZM2371/ZM2372
3.4 Connection of DUT
3.4.1 Measurement Terminals

Description of each terminal
H
CUR
Outputs the signal to drive the DUT.
H
POT
Measures the voltage applied to the DUT.
L
POT
Measures the voltage applied to the DUT.
L
CUR
Measures the current flowing in the DUT.
Grounding terminal to guard the DUT
Figure 3
–3 Functions of measurement terminals

Measurement terminals when power is OFF
Even when the power is in OFF state, the measurement terminals are connected to internal
circuits.
！
WARNING
The measurement category of measurement terminals L
CUR
, L
POT
, H
POT
, H
CUR
of
the ZM2371 / ZM2372 is CAT I. Do not connect them directly to the power lines of
power outlet, distribution board, or inside a device. Also, do not apply voltage
exceeding 42Vpk to the grounding. Otherwise, you may get a shock or the
ZM2371 / ZM2372 may be damaged.
！
CAUTION
Do not give signals from outside to the measurement terminals.
Do not give signals from outside even when the power is OFF.
Otherwise, the ZM2371 / ZM2372 may be damaged.
！
CAUTION
Do not connect the charged capacitor.
When the DUT could have been charged, discharge the DUT completely before
connection.
Discharging the DUT to the measurement terminals may damage the ZM2371 /
ZM2372.
Connect total four outer
conductors (shields) of each
terminal together.
Be sure to connect outer
conductors (shields) of H
CUR
and L
CUR
terminals, since the
signal currents return through
these conductors.
H
CUR
H
POT
L
POT
L
CUR
V A
DUT