76
Serial Communication and Command Set
nnn Channel read index (001 to 400)
mmm Channel write index (001 to 400)
NOTE: When nnn = mmm, using the EA command to read event data, the event buffer is empty,
i.e., all event data which has been recorded has also been read.
Return Clock Status
Command:
SC
SC returns the current clock status.
Response: L/U, U=xx, S=nn
C
Format:
L = Clock currently locked to GPS (U for unlocked).
xx = Indicates loss of lock period, up to 99 minutes.
nn = User specified out-of-lock delay, 00 to 99 minutes (refer to Table A-8).
S = Off if the out-of-lock function is deactivated, S = ZDL indicates zero delay.
Return DCXO Status
Command:
SD
SD returns the DCXO (Digitally Compensated Crystal Oscillator) status, which compares the
oscillator with the 1 PPS to track the oscillator drift.
Response:
±
pp.pp PPM
C
Format:
pp.pp = Residual, corrected DCXO error, in parts per million
EEPROM Status
Command:
SE
SE returns the EEPROM status.
Response: T=t CE=ee
Format:
t = 0, No Timeout Error; t = 1, Timeout Error
ee = Number of corrected errors in reading EEPROM data
Receiver Status
Command:
SR
SR returns the current receiver status.
Response: V=vv S=ss T=t P=Off E=0
C
Format:
vv = number of satellites, visible to the antenna, per almanac.
ss = relative signal strength (range: 0 to 255, nominal value = 15)
Summary of Contents for 1092A
Page 4: ...iv ...
Page 18: ...xviii LIST OF TABLES ...
Page 129: ...C 10 Option 20A Four Fiber Optic Outputs 111 Figure C 7 Option 20A Jumper Locations ...
Page 131: ...C 11 Option 27 8 Channel High Drive 113 Figure C 8 Option 27 Jumper Locations ...
Page 148: ...130 Options List Figure C 10 Option 29 Connector Signal Locations ...