GW Instek PSP Series User Manual
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from the display. If the " F " key is pressed, the symbol "fine"
appears on the display.
LOCK Pressing the "LOCK" key locks/blocks all keys and the
encoder wheel against inadvertent adjustment. Only the
"Power" switch remains active. Locking is indicated by the
"locked" symbol in the bottom line of the display. If the
"LOCK" key is pressed again (> approx. 2s), then the
operating elements are released again (unlocked).
D) Adjusting the output
OUTPUT The output of the power supply is switched on or off via
a relay with the "OUTPUT" key. In the process, the
status "On" or "Off" is indicated at the bottom right of
the display. On switching the power supply on, the
output is always in switched-off status.
E) +%, -% settings
+% Under output off status, press +% key once, the LCD display
will indicate xxx (the multiple value of the original storage
data), now set the +% value by using the knob and press enter
key to save it. Afterward, when the output is in the “ON”
status, press +% key, the output will be changed according to
the saved multiple value.
-% Under output off status, press -% key once, the LCD display
will indicate xxx (the multiple value of the original storage
data), now set the -% value by using the knob and press enter
key to save it. Afterward, when the output is in the “ON”
status, press -% key, the output will be changed according to
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the saved multiple value.
For example:
Set the output voltage as 10.00V, the save value of +% is 105,
and the save value of -% is 95. The +% key is pressed, output
voltage will be changed to 10.00V
× 1.05 = 10.50V, while the -
% key is pressed, output voltage will be changed to 10.00V
×
0.95 = 9.50V. The output voltage will be back to normal by
pressing the normal key.
F) "REM" key
A serial RS-232 interface is incorporated on the rear of the case.
With the appropriate interface cable and optional software,
communication with an IBM-compatible PC is therefore possible.
The interface is naturally via an optocoupler.
REM Clear the Remote Control mode and use panel control setting
instead. Thereupon, as with "LOCK", all operating elements
(except POWER) are locked against direct input.
7. Disposal
Dispose of an unusable, irreparable Switching Power Supply PSP
series in accordance with applicable statutory regulations.