Symmetricom Z3801A, User Manual

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Chapter 4 Command Listing and Status Information
Z3801A Commands
4-8 User’s Guide
[SOURce]:PTIMe (Cont.)
:LEAPsecond
:ACCumulated? returns INT Identifies accumulated time difference (in
seconds) between GPS and UTC time scales.
:GPSTime? returns INT in HEX GPS time of next pending leapsecond.
:SYNChronization Node Only.
:IMMediate Used during recovery to initiate a near
instantaneous alignment of GPS
1 PPS and Receiver output 1 PPS.
:TCODe:FORMat F1 | F2 Selects or queries the format of the time code
message returned by :PTIM:TCOD?
:TCODe? returns quoted string Provides timecode message 980 to 20 ms prior to
1 PPS of indicated time. Format is specified by
:PTIM:TCOD:FORMat. Type of data provided:
time in secs of next on-time edge, TFOM, leapsec
data, alarm indication, and service request.
See “Detailed Description of the Two Time Code
Formats” on page 4-12 for complete information.
:TINTerval? returns REAL in seconds Returns the filtered GPS 1 PPS to internal
oscillator 1 PPS interval. Generates an error
(
−
230, Data corrupt or stale ) when this interval
is unavailable (e.g., if no GPS 1 PPS or no
satellites available).
[SOURce]:ROSCillator Node Only. ( Note: [SOURCe]:SYNChronization
is an alias for [SOURCe]:ROSCillator.)
:HOLDover Node Only
:DURation? returns REAL in seconds,
0 | 1 First parameter is amount of time that Receiver
has been in current holdover or amount of time of
last holdover, depending on holdover state.
Second parameter identifies holdover state: 0 =
not in holdover, 1 = in holdover.
:INITiate Places the Receiver in holdover. It will stay there
until you send :ROSC:HOLD:REC:INITiate.
:RECovery Node Only
:INITiate Initiates a recovery from holdover. Use this
command to take the Receiver out of a manually
selected holdover. It is not used to initiate
holdover recovery in any other situation.
Table 4-2. Z3801A PRIMARY Commands (continued)
Keyword/Syntax Parameters/
Responses Comments