Smart Features
6-16 BASLER A102
f
DRAFT
6.7.5 CRC Checksum
The CRC Checksum feature adds a chunk to each image frame containing a 16 bit CRC
checksum calculated using the Z-modem method. The CRC Checksum chunk is always the last
chunk added to the image data stream and the chunk is always 32 bits in size. As shown in Figure
6-2, the checksum is calculated using all of the image data and all of the appended chunks except
for the checksum itself.
Figure 6-2: Data Used for the Checksum Calculation
Control and Status Register for the CRC Checksum Feature
L
The extended data stream feature (see Section 6.7.1) must be enabled in order to
use the CRC Checksum feature or any of the other smart feature that adds informa-
tion to the image data stream. Disabling the extended data stream feature switches
off all smart features that add information to the image data stream.
The CRC Checksum feature will only work when the camera is set for video format 7.
Name CRC Checksum
Address See “Determining the Address of Smart Features CSRs” on page 6-4.
CSR GUID 3B34004E - 1B84 - 11D8 - 83B3 - 00105A5BAE55
Field Bit Description
Presence Inq
(Read only)
[0] Presence of this feature
0: Not Available 1: Available
---- [1 ... 30] Reserved
Enable
(Read / write)
[31] Enable / Disable this feature
0: Disable 1: Enable
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