SA.45s Chip-Scale Atomic Clock
SA.45s CSAC User Guide Revision D
20
Table 5 • Command Summary
Shortcut
Description
Command
Reference Section
6
Return telemetry headers
as comma-delimited string
!6[CRLF]
"Telemetry (6 and ^)" section
(see page 20)
^
Return telemetry as
comma-delimited string
!^[CRLF]
"Telemetry (6 and ^)" section
(see page 20)
F
Set/report frequency
adjustment
!F?[CRLF]
"Frequency Adjustment (F)"
section (see page 23)
M
Set/report operating mode
register bits
!M?[CRLF]
"Set/Clear Operating Modes
(M)" section (see page 24)
S
Sync CSAC 1PPS to external
1PPS
!S[CRLF]
"1PPS Synchronization (S)"
section (see page 25)
D
Set/report 1PPS
disciplining time constant
!D?[CRLF]
"Set 1PPS Disciplining Time
Constant (D)" section (see page
25)
U
Set/report ultra-low power
mode parameters
!U?[CRLF]
"Set Ultra-low Power Mode
Parameters (U)" section (see
page 26)
T
Set/report time-of-day
!T?[CRLF]
"Time-of-Day (TOD)" section
(see page 26)
m
Set/report 1PPS phase
threshold for discipline
status OK check
!m?[CRLF]
"Set 1PPS Phase Threshold for
Discipline Status OK Check (m)"
section (see page 27)
>
Set/report 1PPS Out Pulse
width as multiple of
default width
!>?[CRLF]
"Set 1PPS Out Pulse Width as an
Integer Multiple of Default
Width (>)" section (see page 28)
@
Set/report deferred
command
!@?[CRLF]
"Deferred Command (@)"
section (see page 28)
?
Help
!?[CRLF]
"Help (?)" section (see page 28)
3.4.3
Detailed Command Descriptions
The following are descriptions of the CSAC's commands.
3.4.3.1
Telemetry (6 and ^)
CSAC supports two commands,
and
, to retrieve the telemetry headers and values, respectively.
!6
!^
Both responses are comma-delimited strings, suitable for importing into spreadsheet programs.
Example:
Telemetry headers command:
!6[CRLF]
Unit response:
Status,Alarm,SN,Mode,Contrast,LaserI,TCXO,HeatP,Sig,Temp,
Steer,ATune,Phase,DiscOK,TOD,LTime,Ver[CRLF]
Example:
Telemetry data command:
!^[CRLF]
Unit response:
0,0x0000,1209CS00909,0x0010,
4381,0.86,1.573,17.62,0.996,28.26,- 24,---,-1,1,1268126502,586969,1.0
[CRLF]
The maximum length of a telemetry string is 135 characters.
Note: The single-characters and are shortcuts for
and
, respectively.
6
^
!6[CRLF]
!^[CRLF]
