Four-Channel Oscilloscopes; Leds; Internal Peripherals; External Peripherals - Tektronix TPS2000 Series Service Manual

Theory of Operation
Four-Channel
The Front Panel board for four-channel oscilloscopes is effectively two front
Oscilloscopes panels in parallel. The left side of the board is largely handled by the display
ASIC for channels 1 and 2. The right side of the board is handled by the channel
3 and 4 ASIC. Separate front-panel ICs support these data paths.

LEDs

The front panel contains three LEDs that light to indicate when the Save,
Autorange controls , or the multipurpose knob are active. In addition, most
buttons have a LED behind them for illumination in low-light conditions. Button
illumination can be turned off in the Utility menu.

Internal Peripherals

The Acquisition board includes an FPGA that manages communication between
the microprocessor and the internal program memory (FLASH), RTC (Real-Time
Clock), battery system, and temperature sensor. The temperature sensor is used
for fan control.

External Peripherals

The Acquisition board FPGA also manages communication between the
microprocessor and external RS-232 port, Printer Port, and Compact FLASH
Card.
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TPS2000 Series Digital Storage Oscilloscopes Service Manual