Principles Of Operation; Overall Block Diagram; Analog Circuitry Block Diagram; Digital Circuitry Block Diagram - Tektronix Keithley SourceMeter 2410 Service Manual

Principles of operation

The following information is provided to support the troubleshooting tests and procedures
covered in this section of the manual. Refer to the following drawings:
Figure 4-1 — Overall block diagram
Figure 4-2 — Analog circuitry block diagram
Figure 4-3 — Power supply block diagram
Figure 4-4 — Output stage simplified schematic
Figure 4-5 — Digital circuitry block diagram

Overall block diagram

Figure 4-1 shows an overall block diagram of the Model 2410. Circuitry is divided into three
general areas:
•
•
•
Figure 4-1
Overall
block diagram
Front
Display,
Panel
Keyboard Controller
Digital
Trigger,
I/O
Digital
I/O
Analog circuits — includes 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 the 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
Clamps
DACs
Feedback
A/D
Converter
Microcomputer
Digital Section
Output
Output
Stage
Guard
Guard
Buffer
RS-232 I/O
RS-232
GPIB
GPIB I/O
Interface
Troubleshooting
To Analog To
Circuits Output Stage Digital Circuits
±70V ±15V +5V ±42V ±1200V +5V
Output
Analog
Stage
Power
Power
Supply
Supply
Line In
Power Supply
4-5
To
+12V
Digital
Power
Supply