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Getting Started
6
PS280 & PS283 User Manual
13. Output Terminals. These terminals for the left, variable power
supply allow you to plug in the test leads as follows:
H The red terminal on the right is the positive polarity output
terminal. It is indicated by a + sign above it.
H The black terminal on the left is the negative polarity output
terminal. It is indicated by a – sign above it.
H The green terminal in the middle is the earth and chassis
ground.
14. VOLTAGE Knob. Allows you to set the output voltage for the
left variable power supply. If the instrument is in a tracking
mode, the left power supply is the slave and the VOLTAGE knob
has no effect.
15. TRACKING Buttons. These buttons select the test mode of the
instrument. The PS280 or PS283 features two tracking modes:
series and parallel. If both push-button switches are disengaged
(out), the two variable power supplies operate independently. If
the left switch is pushed in, the instrument operates in series
mode. If both switches are pushed in, the instrument operates in
parallel mode.
In series mode, the master power supply controls the voltage for
both power supplies, which can then range from 0 to 60 V. Refer
to Series on page 20 for further details.
In parallel mode, the master power supply controls both the
voltage and the current for both power supplies. The current can
then range from 0 to 4 A (0 to 2 A for the PS283). Refer to
Parallel on page 22 for further details.
16. CURRENT Knob. Use this control to set the output current for
the right, variable power supply. If the instrument is in a tracking
mode, the right power supply is the master and the CURRENT
knob affects both variable power supplies.