Troubleshooting 4-5
Overall block diagram
Figure 4-1 shows an overall block diagram of the Model 2430. Circuitry may be divided into
three general areas:
•
Analog circuits — includes sourcing circuits such as the DACs, clamps, output stage,
and feedback circuits, as well as measurement circuits such as the A/D converter.
•
Digital circuits — includes the microcomputer that controls the analog section, front
panel, and GPIB and RS-232 ports, as well as associated interfacing circuits.
•
Power supplies — converts the AC line voltage into DC voltages that supply the power
for the digital and analog circuits, and the output stage.
Analog Section
Output
A/D
Converter
Guard
Buffer
Guard
Display,
Keyboard
Microcomputer
Digital
I/O
GPIB
Interface
RS-232 I/O
GPIB I/O
Digital Section
To Analog
Circuits
To
Output Stage
To
Digital Circuits
±
15V +5V
±
42V
±
150V
+5V +12V
Analog
Power
Supply
Output
Stage
Power
Supply
Digital
Power
Supply
Line In
Power Supply
DACs
Clamps
Output
Stage
Feedback
Front
Panel
Controller
Trigger,
Digital
I/O
RS-232
Trigger
Link
Figure 4-1
Overall block
diagram
Summary of Contents for SourceMeter 2430
Page 3: ...TAIWAN 1FL 85 Po Ai Street Hsinchu Taiwan R O C 886 3 572 9077 Fax 886 3 572 9031 ...
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Page 16: ......
Page 17: ...1 Performance Verification ...
Page 33: ...2 Calibration ...
Page 56: ...2 24 Calibration ...
Page 57: ...3 Routine Maintenance ...
Page 60: ...3 4 Routine Maintenance ...
Page 61: ...4 Troubleshooting ...
Page 75: ...5 Disassembly ...
Page 82: ...5 8 Disassembly ...
Page 83: ...6 Replaceable Parts ...
Page 104: ...6 22 Replaceable Parts ...
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Page 116: ...A 12 Specifications ...
Page 117: ...B Command Reference ...
Page 128: ...B 12 Command Reference ...
Page 129: ...C Calibration Programs ...
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