Microchip LN-CSAC-SA65 handleiding
Handleiding
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LN-CSAC Model SA65-LN User’s Guide
2024 Microchip Technology Inc. and its subsidiaries DS50003805A-page 35
The format for setting the cable length compensation value is !DCX[CRLF] where X is
the new compensation value.
Example: Set cable length compensation to +15 nanoseconds:
Command: !DC150[CRLF]
Response: 150[CRLF]
To query the current compensation setting, without modifying the value, use the com-
mand !DC?
Example: Query current compensation setting:
Command: !DC?[CRLF]
Response: 150[CRLF]
To store the current compensation setting in non-volatile RAM, use the command !DCL
Example: Latch current value of compensation to power-up default:
Command: !DCL[CRLF]
Response: Phase comp latched[CRLF]
3.3.8 Time-of-Day (TOD)
TOD is maintained internally within the LN-CSAC, represented by a single unsigned
long integer value, which begins counting up from 0 when the LN-CSAC is powered on.
The TOD is synchronized with the 1 PPS output. TOD is routinely transmitted in the
telemetry string (see Section 3.3.1 “Telemetry (6 and ^)”).
TOD may be set externally with the !T command in this format: !TYXXXX[CRLF]
where Y is either A for absolute setting or D for a delta adjustment of TOD and XXXX is
either an unsigned integer TOD or a signed integer adjustment to the TOD.
Example: Absolute setting TOD to 1221578499:
Command: !TA1221578499[CRLF]
Unit response: TimeOfDay = 1221578499[CRLF]
Example: Retard TOD by 3600 seconds = 1 hour:
Command: !TD-3600[CRLF]
Unit response: TimeOfDay = 1221574902[CRLF]
The TOD may be reported synchronous with the 1 PPS output:
Example: Retrieve TOD command:
Command: !T?[CRLF]
Unit Response: XXXX[CRLF] where XXXX is the current TOD.
When queried with the !T? command, the first character of TOD appears on the com-
munications port within 20 ms following the rising edge of the next 1 PPS output pulse.
Because this necessarily creates a delay of up to a second between sending the !T?
command and receiving a response from the LN-CSAC, the host system must allow for
an RS-232 receive timeout of at least 1000 ms when anticipating a response to the !T?
command. For less critical timing applications, the TOD can be somewhat ambiguously
parsed from the standard telemetry string (see Section 3.3.1 “Telemetry (6 and ^)”).
Note: This response does not occur until the next 1 PPS output pulse.
Note: The single-character T is a shortcut for !T?[CRLF].
Bekijk gratis de handleiding van Microchip LN-CSAC-SA65, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Microchip |
| Model | LN-CSAC-SA65 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6392 MB |
