Arbiter Systems 1092A, Operation Manual

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82 Serial Communication and Command Set
Position–Hold – OFF
Command: PH0
PH0 deactivates the Position–Hold timing mode. The receiver resumes computing time and position
solutions approximately each second. This is referred to as the Fix mode.
Response:
C
Position–Hold – ON
Command: PH1
PH1 activates the Position–Hold timing mode. In this mode, the receiver position is held fixed
and each channel is used to compute a timing solution. These solutions are averaged together,
resulting in reduced timing noise due to to Selective Availability and RF channel noise. To operate
properly, the position used by the receiver must be fairly accurate. Due to the risk that previously
stored position data may be inaccurate, exercise caution when activating the Position–Hold mode
without either performing an Auto Survey or getting the position directly. Failure to observe these
precautions may result in serious timing errors.
Set Position Hold – Elevation
Command: MMMMM.mmH
Sets the antenna elevation in meters MSL (mean sea level); fractional meters of elevation are
optional. Position Hold must be enabled to set position.
Format: M = meters; m = fractional meters
Response:
C
Set Position Hold – Latitude
Command: dd:mm:ss.sssN(S)
Sets the antenna latitude in degrees, minutes and seconds, North (N) or South (S). Position Hold
must be enabled to set position.
Format: dd = degrees; mm = minutes; ss.sss = seconds and fractional seconds
Response:
C
Set Position Hold – Longitude
Command: ddd:mm:ss.sssE(W)
Sets the antenna longitude in degrees, minutes and seconds, East (E) or West (W). Position Hold
must be enabled to set position.
Format: ddd = degrees; mm = minutes; ss.sss = seconds and fractional seconds
Response:
C