Theory of operation
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pg900ug.en r1
5.2
Hardware components for PicoSource PG900 models
ARM microcontroller
The ARM microcontroller controls all hardware components of the PicoScource PG900
generators.
USB transceiver
A standard slave USB controller for communication with PC.
Power supply
The power supply provides necessary stabilized DC power voltages from in5
V DC from the power adaptor.
Trigger
The trigger generator provides internal or external trigger period from 1 µs to 1 s.
Fixed delay line
Provides lead time between trigger output and any of four main outputs.
Width former
Triggerable one-shot providing pulse width control from 0.2 to 4 µs.
SRD deskew
Provides 2 ns p-p differential timing deskew between integrated SRD outputs.
Positive pulse drive
Drives positive pulse former of integrated SRD generator. Controls output amplitude.
Negative pulse drive
Drives negative pulse former of integrated SRD generator. Controls output amplitude.
Positive pulse former
Provides positive SRD output with leading edge faster than 60 ps.
Negative pulse former
Provides negative SRD output with leading edge faster than 60 ps.
TD deskew 1
Provides at least 200 ps timing deskew for TD 1 pulse head.
TD deskew 2
Provides at least 200 ps timing deskew for TD 2 pulse head.
TD drive 1
Controls peak current and timing diagram of TD 1.
TD drive 2
Controls peak current and timing diagram of TD 2.
TD pulse heads
Two pulse heads with any selected polarity having leading edge faster than 40 ps.
Summary of Contents for PicoSource PG900 Series
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