SA.45s Chip-Scale Atomic Clock
SA.45s CSAC User Guide Revision D
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Figure 12 • CSACdemo Options… Panel
3.4.1.2
How to Calculate the Checksum
Checksum value is a two digit hexadecimal representation of the logical XOR of each character in the
command (excluding “ ” and “
”). For example, if one desires to implement analog tuning by
!
[CRLF]
sending the
command, then they should send
in Checksum mode. In
!MA[CRLF]
!MA*0C [CRLF]
the following table, we convert and to their binary equivalents and calculate the XOR in the bottom
M
A
row. The corresponding hexadecimal value of that XOR is “C”. Therefore the two-digit Checksum is
“
”.
0C
Table 4 • Checksum Calculation Example
Checksum Components
ASCII Character
Binary Value
Hex Value
Input command characters
M
1001101
A
1000001
Logical XOR
0001100
C
3.4.2
Command Summary
The following table summarizes the CSAC commands.
Note: The and commands are only available for firmware versions 1.08 and later.
m
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