SA.45s Chip-Scale Atomic Clock
SA.45s CSAC User Guide Revision D
29
Table 10 • Unit Response to Help Command (?)
Command
Description
F-
Adjust frequency
^-
Telemetry
6-
Telemetry headers
D-
Set 1PPS discipline tau
m-
Set 1PPS discipline threshold for phase in ns
>-
Set 1PPS out pulse width as 1–4 times default
S-
Sync 1PPS
U-
Set parameters for ultra-low power mode
M-
Change mode register
T-
Change/report time of day
?-
Show this list
@-
Delayed command execution
For firmware versions 1.08 and later, the response also contains the above lines on and commands.
m
>
Note: The single-character is a shortcut for
.
?
!?[CRLF]
3.5
Developer's Kit
The CSAC Developer's Kit includes all of the necessary hardware, and cabling to facilitate validation of
performance, brass-board demonstrations, and software interface development.
3.5.1
Package Contents
The following table lists the contents of the developer's kit (Part # 990-00123-000).
Table 11 • Contents of CSAC Developer's Kit
Item
Microsemi Part Number
Notes
Evaluation board
054-00279-000
"Notes on the Evaluation Board" (see page
29)
Power adapter
140-00041-000
5 VDC 5 mm center positive
RS232 cable
060-00322-000
3.5.2
Evaluation Board Overview
Detailed schematics of the evaluation board are provided at the end of this document under
The following illustration shows the connections to the evaluation
the Evaluation Board." (see page 37)
board.
