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Appendix D
If the packet contains integer XY data:
Byte
Data
The maximum sample rate is 1.25MHz. If floating-point XYRθ data is streamed, then the
data rate can exceed 1.25 MHz × 4 channels × 4 bytes = 20 MBytes/s. This data rate
requires Gigabit ethernet to work. Fast (100Mb/s) ethernet is not sufficient to support the
maximum data rate. At high data rates, we recommend putting the SR865A and the
receiving computer on the same dedicated network. This reduces traffic congestion for
other users, and reduces the chance of dropped packets.
0
1
2
3
4
5
6
X(0)
Y(0)
X(1)
Y(1)
Data Streaming and Capture
Data bytes
7
8
9
10
11
12
X(2)
Y(2)
X(3)
13
14
15
16
17
Y(3)
X(4)
SR865A DSP Lock-in Amplifier
173
18
19
...
...
Y(4)
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