Arbiter Systems 1088A, Руководство по эксплуатации

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76 Serial Communication and Command Set
Set Channel – Event
Command: AE, BE
AE sets channel A, and BE sets channel B, to the event recording mode.
Response:
C
Clear Event Buffer
Command: CA, CB
CA clears the channel A, and CB clears the channel B, event buffer and then resets the read and
write indices to 0.
Response:
C
Return Deviation for Event Channel
Command: DA, DB
DA and DB return the 1-PPS deviation and sigma for the event input for channel A and B respec-
tively.
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
Arm Event Trigger
Command: AR
AR arms the RS-232C event capture circuitry.
Response:
C
Return Single Event
Command: EA, EB
EA returns a single event record from the channel A event buffer, and EB returns a single event
record from the channel B event buffer. The record number (‘nnn’) increments once for every
issuance of this command.
Response: Local Time mm/dd/yyyy hh:mm:ss.sssssss nnAL (...BL)
C
UTC time mm/dd/yyyy hh:mm:ss.sssssss nnnAU (...BU)
C
Format: A = Channel A, B = Channel B
U = UTC time, Channel A
L = Local time, Channel A
NO DATA
C
(if buffer is empty)
Recorder - Channel A or B
Command: RA, RB
RA sets channel A, and RB sets channel B, recorder
±
5 Volt analog output to follow 1 PPS
deviation.
Response:
C