Tektronix PS2520, Руководство пользователя

Страница: 23 / 56

Operating Basics
PS2520, PS2520G, PS2521 & PS2521G User Manual
9
When the OCP circuit disables the output, it displays the message
“Err –012”. When this happens, correct the setup and remove the
error message by toggling OCP off and then on again.
When the OCP is not on, the power supply still limits the current to
the set level and reduces the voltage as necessary to control the
power. Refer to the following section for instructions on how to set
the current limit.
Setting Voltage and Current Limits
The power supplies provide either constant voltage or constant
current to a load. The voltage limit, current limit, and the size of the
load connected to the output determines whether the power supply
holds the voltage constant or the current constant. The appropriate
indicator appears on the display to indicate whether constant voltage
(C.V.) or constant current (C.C.) is active.
Using the Keypad to Set Limits
Press VOLTS SET
→
(number)
→
(return ) to enter the voltage
limit.
Press CURRENT SET
→
(number)
→
(return ) to enter the
current limit.
Example: Set the voltage of Output 3 to 4.2 volts with a maximum
current of 0.3 amperes.
1. Select Output 3:
SHIFT
→
OUT3
2. Set the voltage level of the output to 4.2 V:
VOLTS SET
→
4.2
→
(return )
3. Set the current limit of the output to 0.3 A:
CURRENT SET
→
.3
→
(return )
The power supply keeps the voltage constant if the load does not
require more than 0.3 amperes. The power supply indicates C.V. on
the display.