ODA MX Series, Руководство пользователя, Страница: 26 / 92

Stability
▌Keep the DUT’s cable and sensing cable as short as possible.
▌Twist the DUT’s cable.
▌The sensing cable must be safely connected to the DUT.
▌You should never connect the DUT cable to the sensing terminal.
Connecting Remote Voltage Sensing
To connect V-sensing, the metal short bar must be removed from the output and sensing terminals.
If V-sensing is no longer used, the metal short bar must be connected the output and sensing
terminals again.
V-sensing must be carefully connected from the output terminal and sensing terminal to the
DUT. Connecting the DUT to the sensing terminal may lead to the unit falling into an
unregulated state. Since the displayed voltage and current values are significantly different
from the output terminal’s voltage and current, this is very dangerous.
Since V-sensing under the circumstances wherein the DUT’s cable is long and the DUT
requires a large amount of power acts like a filter itself just like a part of the voltage
feedback loop, this can cause problems in V-sensing. This leads to power supply itself or
the output terminal’s output value becoming unstable due to the power supply's very fast
responding speed. This unstable loop creates a feedback and acts as another unstable
factor, which leads to the possibility of the power supply’s oscillation. To avoid this, follow
the procedure below.
Since the power supply’s programming feedback is part of the loop, unmasking
the sensing cable during V-sensing can give rise to many unexpected issues.
Note
< Figure 3-1 >
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