Microchip LN-CSAC-SA65 handleiding
Handleiding
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LN-CSAC Model SA65-LN User’s Guide
DS50003805A-page 28 2024 Microchip Technology Inc. and its subsidiaries
Example (disable checksum through mode register)
Command: !Mc*2E[CRLF]
Unit response: 0x0000[CRLF]
If the checksum is not present or if the checksum value is invalid, then the command is
not executed and the LN-CSAC responds with *[CRLF].
Example (malformed checksum):
Command: !Mc*2D[CRLF]
Unit response: *[CRLF]
3.1.2 How to Calculate the Checksum
The checksum value is a two-digit hexadecimal representation of the logical XOR of
each character in the command (excluding “!” and “[CRLF]”). Table 3-1 illustrates
computation of the checksum for sending the !MD[CRLF] command. In Table 3-1, M
and D are converted to their binary equivalents and the XOR is computed in the bottom
row. The corresponding hexadecimal value of that XOR is 9. Hence, the command
should be sent as !MD*09 [CRLF].
3.2 COMMAND SUMMARY
Table 3-2 summarizes the LN-CSAC commands.
Note: Communicating with the LN-CSAC via Clockstudio does not require a
checksum. Any commands sent to the LN-CSAC via the Clockstudio con-
sole will have a checksum generated automatically. However, if a check-
sum is provided, the LN-CSAC will respond appropriately.
TABLE 3-1: CHECKSUM CALCULATION EXAMPLE
Checksum Component ASCII Character Binary Value Hex Value
Input Command Characters
M 0100 1101 —
D 0100 0100 —
Logical XOR — 0000 1001 9
TABLE 3-2: COMMAND SUMMARY
Shortcut Description Command Reference Section
6
Return telemetry headers as
comma-delimited string
!6[CRLF] Section 3.3.1 “Telemetry (6 and ^)”
^
Return telemetry as
comma-delimited
!^[CRLF] Section 3.3.1 “Telemetry (6 and ^)”
F
Set/report frequency adjust-
ment
!F?[CRLF]
Section 3.3.2 “Frequency Adjustment
(F)”
M
Set/report operating mode reg-
ister bits
!M?[CRLF]
Section 3.3.3 “Set/Clear Operating
Modes (M)”
S
Sync LN-CSAC 1 PPS to
external 1 PPS
!S[CRLF]
Section 3.3.4 “1 PPS Synchronization
(S)”
D
Set/report 1 PPS disciplining
parameters
!D?[CRLF]
Section 3.3.5 “Set 1 PPS Disciplining
Time Constant (D)”, Section 3.3.7 “Set
1 PPS Disciplining Cable Length Com-
pensation (DC)”
d
Set/report volatile 1 PPS disci-
plining parameters
!d?[CRLF]
Section 3.3.6 “Set Volatile 1 PPS Disci-
plining Time Constant (d)”
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Productinformatie
| Merk | Microchip |
| Model | LN-CSAC-SA65 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6392 MB |
