App-30
IM DL35O-03EN
Appendix 8 Block Diagram
Block Diagram of the Instrument
CPU
ACQ Memory
GIGAZoom
Engine
SD Memory Card
USB
100 BASE-LAN
Main Memory
Ethernet Port
USB Port
GO/NO-GO
GO/NO-GO
200 Mpoints
Plug-in
Module
CH1-CH4
Logic
Probe
CH5-CH6
GPS
CH7
LCD
Touch Panel
SD Card Slot
EXT TRIG OUT
EXT EVENT IN
START IN
EXT CLK IN
EXT TRIG IN
Signal Flow of the Instrument
The input terminal signal flow varies for each model. In this example, we will explain the signal flow
for the High-Speed 10 MS/s, 12-Bit Isolation Module, 720250 (HS10M12). (For the signal flow of a
particular module, see the module’s block diagram.)
The input signal applied to the two input terminals is first processed by each module’s input section.
In the 720250 (HS10M12), the input signal is attenuated and amplified by an attenuator (ATT) and
amplifier (AMP). Then, the signal’s bandwidth is limited by a filter (FLT). Next, the signal is sampled
at a rate of 10 MS/s (10000000 times a second) by an A/D converter and converted into digital data.
Then, the signal passes through an isolator and an FPGA to a waveform-processing GIGAZoom
Engine of the DL350.
GIGAZoom Engine collects not only the digital data from the input modules but also the instrument’s
standard 16-bit logic signals and position information from GPSs.
The collected digital data is stored to the acquisition memory (ACQ Memory). The digital data stored
to the ACQ memory is compressed quickly by the GIGAZoom Engine and shown on the SVGA TFT
color display.