Rigol DP811 - Sense Working Mode

Chapter 2 Front Panel Operations RIGOL
DP800 User Guide 2-13
Sense Working Mode
When the output current of the power supply is high, the voltage drop on the load
lead cannot be ignored. To ensure that the load can acquire the correct voltage drop,
CH2 of DP822/DP821 and DP813/DP811 (both provide 10A output current) provide
the Sense (remote sense) working mode. In this mode, the instrument detects the
voltage at the load terminal instead of the voltage at the output terminal of the
power supply; in this way, the instrument can automatically compensate for the
voltage drop caused by the load lead to ensure that the power supply output value
set by users is consistent with the voltage acquired by the load.
The Sense connecting method on the front panel is as shown in the figure below.
Operation Procedures:
1. Connect the channel output terminals and Sense terminals on the front panel of
the instrument to the two ends of the load respectively, as shown in the figure
above. Pay attention to the polarity when making connections.
2. For DP822/DP821: after you select CH2 (5V/16A for DP822; 8V/10A for DP821),
press Sense to turn on the Sense function.
For DP813/DP811: after you select the desired range, press Sense turn on the
Sense function.
In addition, the output interface on the rear panel of DP813/DP811 can also be used
Tip:
 When the output current is high, to acquire the best output characteristics,
the load leads should be as short as possible and it is recommended that you
twist the load leads together.
 Twisted pairs are recommended for the Sense leads and do not twist the
Sense leads and load leads together.
Lead Equivalent
Resistance
Sense Lead
Load Lead
Sense Lead
Load Lead
Lead Equivalent
Resistance
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