User manual

RIGOL Chapter 2 Front Panel Operations
2-80 DL3000 User’s Guide
Protection Function
The load includes the following protection features: overcurrent protection (OCP),
overvoltage protection (OVP), overpower protection (OPP), overtemperature
protection (OTP), as well as local/remote reverse voltage (LRV/RRV) protection.
Once any of the above conditions is detected, the load will take the corresponding
protection measures and enter its self-protection mode.
CAUTION
To avoid causing damage to the load, the input voltage shall not
exceed the maximum rated input voltage, and the AC voltage is not
allowed to be connected to the load via the channel input terminals.
 Overcurrent Protection (OCP)
When the current that the load sinks exceeds the protection current, the load's
input will be automatically turned off and the load will stop sinking the current.
At this time, the beeper sounds, and a prompt message is displayed,
"Overcurrent protection, input disabled!" You can press OK to exit the prompt
message.
 Overvoltage Protection (OVP)
When the input voltage exceeds the protection voltage, the load's input will be
automatically turned off and the load will stop sinking the current. At this time,
the beeper sounds, and a prompt message is displayed, "Overvoltage protection,
input disabled!" You can press OK to exit the prompt message.
 Overpower Protection (OPP)
Overpower protection feature is mainly designed for protecting hardware. It
prevents the elements from being remained in the overpower state for a long
time, as doing so may cause the elements to quickly get aged or even damaged.
When the input power exceeds the protection power, the load's input will be
automatically turned off and the load will stop sinking the current. At this time,
the beeper sounds, and a prompt message is displayed, "Overpower protection,
input disabled!" You can press OK to exit the prompt message.
 Overtemperature (OTP)
The load has an overtemperature protection circuit. When the internal
temperature exceeds the safe limits, the load's input will be automatically turned
off and the load will stop sinking the current. At this time, the beeper sounds,
and a prompt message is displayed, "Overtemperature protection, input
disabled!". You can press OK to exit the prompt message.
 Reverse Voltage Protection (LRV/RRV)
When the polarity of input terminals (except the Sense terminals) and that of