GW Instek GSM-20H10, Руководство пользователя

Страница: 154 / 374

SYSTEM SETTINGS
152
When using the rear panel, connect the LO of
the rear panel to the ground. The ground can
be selected from the ground screw on the rear
panel or other safety ground.
Guard : In the Guard Output-off state, I-Source
is selected and set the output current to 0A.
The voltage compliance value is set to 0.5% full
scale of the present measure volt-range. When
making 6-wire guard ohms measurement or
for other loads that use power, you should
select the GUARD Output-off state.
NOTE:
1. When using Off state option to change the
output-off state, it will immediately
change to the selected state.
2. When power on, the GSM will instantly
enter the HIGH IMPEDANCE output-off
state, and then enter the default Normal
Off state.
3. If an overheating condition or interference
on the OE line occurs, the GSM will
enter the HIGH IMPEDANCE output-off
state.
Output off state and inductive load: The
output-off state selected when the inductive
load is loaded depends on the power of the
inductive load itself. NORMAL output-off
state reduces the compliance value setting and
is not suitable for inductive loads. ZERO or
GUARD is more suitable. The ZERO output-
off state does not change the compliance value
setting. The GUARD output-off state changes
the voltage source to a current source and sets
the voltage compliance value at the same time.
GUARD output-off state is mainly used for
guarded ohms measurement. In order to
prevent the GSM from being damaged by the
inductive load, this application needs to