19-2233 PC2
2019-02-01
43(50)
ADQ7DC Manual
16-1796 PC2 2019-02-01
43(50)
The timing of a user-scheduled multi-record transfer is in
. The acquisition is set up and
armed. The user’s software checks for available records. The available records can be transfered with
the
GetDataWHTS
command
1
.
#
DESCRIPTION
a
A/D Converter delivers a stream of data int the acquisition engine.
b
The acquisition engine applies triggers, headers, etc.
c
Data is sent in real-time to the FIFO on the ADQ.
d
The DMA transfers data to the PC when requested by the user.
e
Kernel buffers in the host PC receives the data form the digitizer.
f
The ADQAPI receives incoming data and do necessary pre-processing, for example lost packages, and
sends data to the user’s buffers.
g
User’s buffers in RAM. These are accessed via API commands.
h
The user’s application sets up the digitizer for acquiring data. Then the software requests the acquired data
and perform application specific processing. This is the user’s software.
i
Examples of output devices.
Figure 35: Block diagram of user-scheduled data transfer.
1. WHTS stand for ‘with header and timestamp’.
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