GW Instek PSS-Series User Manual - Manual (Page 12)

PSS-3203/2005 PROGRAMMABLE POWER SUPPLY
USER MANUAL
⎯ 18 ⎯
When above calibration steps has been confirmed correctly, switch
the calibration selection window to SAVE window with the knob and
press [ENTER] to complete the whole calibration procedures.
[Step 6]
If the calibration procedure is not necessary to be stored, just switch
the calibration selection window to Exit window and press [ENTER]
to leave the calibration procedure.
6-4. Cleaning
To clean the power supply, use a soft cloth dampened in a solution
of mild detergent and water. Do not spray cleaner directly onto the
instrument, since it may leak into the cabinet and cause damage. Do
not use chemicals containing benzine, benzene, toluene, xylene,
acetone, or similar solvents. Do not use abrasive cleaners on any
portion of the instrument.
PSS-3203/2005 PROGRAMMABLE POWER SUPPLY
USER MANUAL
⎯ 19 ⎯
7. THE SYSTEM DIAGRAM AND DESCRIPTION
7-1. Block Diagram
The graph above is the system diagram of PSS-SERIES, Which consists
of Micro Processor Unit (MPU), Digital to Analog Converter (DAC),
Analog Switch Circuit, Reference Voltage Circuit, Driver Circuit,
Control Circuit, Comparator, and etc.
AC
INPUT
TRANSFORMER
RELAY
CONTROL
VOLTAGE
COMPARATOR
CURRENT
COMPARATOR
D TO A
CONVERTER
REFERENCE
ANALOG
SWITCH
AND SAMPLE
HOLD
MICRO
CONTROL
LCM
DISPLAY
KEYBOARD
AUX
RECTIFIER
AND FILTER
SERIES
REGULATOR
AMPLIFIER
OR
GATE
O/P
INTERFACE
RS-232 OR GPIB