90
Serial Communication and Commands
10.3.5
Event Mode Commands
Return Specific Event
Command:
nED
nED sets the event buffer Read Index to a specific event number (1 to 300), and returns that
event information in either Local or UTC time format depending on how the command, nTA is
configured.
Response:
LCL mm/dd/yyyy hh:mm:ss.sssssss nnnL
C
UTC mm/dd/yyyy hh:mm:ss.sssssss nnnU
C
Format:
n = Event-Buffer Read Index Number
U = UTC Time
L = Local Time
Set Event Channel Time
Command:
nTA
Sets the time source as either Local or UTC, where n = 0 sets the event time to UTC and n = 1
sets the event time to Local.
Control Event Operation
Command:
m,nEV, EV
m,nEV controls event operation, where m = 0 sets the Event mode, and m = 1 sets the 1-PPS
Time Deviation mode. Use n = 0 for commands, except that n = 123 clears the event buffer. EV
returns a single event from the Channel A event buffer.
For example: 0,0ev sets the Event Mode; 1,0ev sets the 1-PPS Deviation Mode; 0,123ev clears the
event data.
Response:
C
Return Deviation for Event Channel
Command:
DA
Returns 1-PPS deviation and sigma for the event input.
Response:
dddd.dd ssss.ss
C
(Results are in microseconds)
Format:
dddd.dd = the deviation from 1 PPS (GPS), averaged over 16 samples
ssss.ss = the standard deviation (sigma) of samples
