Tektronix PS2520, Руководство пользователя

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Operating Basics
8
PS2520, PS2520G, PS2521 & PS2521G User Manual
Setting the Protection Levels
The OVP (overvoltage protection) and OCP (overcurrent protection)
settings protect against supplying excessive voltage or current to an
output load. If voltage or current reaches the protection level setting,
the power supply disables the outputs.
CAUTION.
To prevent damaging a circuit under test, set protection
levels before you apply power to the circuit.
Setting the OVP
The OVP (overvoltage protection) circuit automatically disables the
output when the voltage on the output reaches the set level.
Press OVP SET
→
(number)
→
(return ) to enter the OVP level.
Example: Set the overvoltage protection for Output 1 to 6 volts:
1. SHIFT
→
OUT1
2. OVP SET
→
6
→
(return )
Pressing the OVP SET again momentarily displays the OVP level
and allows you to confirm the setting.
Resetting the OVP
Using the previous example, if the Output 1 voltage reaches 6 volts,
the power supply automatically disables the output and displays the
message “Err –013.”
To reset the OVP, correct the condition causing the overvoltage and
press SHIFT
→
OVP RESET
Setting the OCP
Pressing OCP
ON
(overcurrent protection on) sets the power supply to
automatically disable the outputs upon reaching the current limit.
The OCP indicator appears on the display when the OCP is on.