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5.3 Display
The Home Screen
The Home screen shows the
primary information for all four
outputs simultaneously whilst
enabling voltage and current to be
set for any output.
The display is divided into four
sections representing outputs 1, 2 ,3
and 4 from left to right. For each
output the display shows operating mode on the top line as CV (constant voltage), CC (constant
current) or SET (Settings). SET is displayed when the output is off.
The two meters directly below show the set values for voltage and current when the output is
off, and the voltage and current being supplied to the load when the output is on.
With an output on, the three lines below the meters show the set voltage (Vset), the set current
(Iset) and the output range (Range). If the output is off, the Vset and Iset lines do not appear
(because the meters are showing the set values).
The eight soft keys are used to set
voltage (Vset) or current (Iset) for
each of the outputs. The presently
selected output and parameter (V or
I) is indicated by illumination of the
soft key and by a flashing arrow in
front of the parameter to be adjusted.
The user can move freely between
setting voltage or current for any
output by pressing the appropriate key.
Pressing the same key again or pressing ESC (Escape) cancels the key and disables all setting
capability.
6
Power Supply Settings
The procedures for setting voltage and current, either numerically or via the spin wheel, have
been explained in the previous section.
6.1 CV and CC modes, Viewing Settings
Depending upon the load conditions, the actual voltage and actual current applying to the load
will not both be equal to their set values.
Output On – CV Mode
When in constant voltage mode the output voltage is equal to the set value and CV is shown on
the top line of the display. The current setting represents the limiting value of current that could
flow (the current limit).
Output On – CC Mode
When in constant current mode the output current is equal to the set value and CC is shown on
the top line of the display. The voltage setting represents the limiting value of voltage that could
be applied (the voltage limit).
Switch-over between CV and CC modes occurs automatically, dependent upon the load
conditions and the settings. The voltage and current settings may also be described as limits
since they represent the maximum values that can apply at the load.
