ashtech Z-FX, Operation And Reference Manual

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8 Z-Surveyor & Z-FX Operation Manual
[X] External Frequency Reference
The external frequency option [X] allows the user to input an external frequency so
the user can synchronize receiver data to an external clock. When enabled, its
installation disables the internal oscillator and uses the external frequency input only.
This option is not available for firmware version UC00 or older.
[M] Remote Monitoring
The remote monitoring option allows the user to use the
REMOTE
.
EXE
to access and
control the receiver via a modem from a remote location.
[F] Fast Data Output
This option enables the receiver to be programed to output both raw position data and
NMEA messages or record data (if a PCMCIA card is present in the receiver) at user
selectable frequencies up to 10Hz. Without this option, only frequencies up to 5Hz
are available.
[T] Point Positioning
The [T] option allows the user to put the receiver into point positioning mode using
the $PASHS,PPO command. Point positioning mode will improve the accuracy of an
autonomous position of a static point.
[3] Observables—1, 2, 3
This option determines the observables available in the receiver where:
1—CA code and P-code on L1/L2 (No carrier)
2—CA code and carrier, P-code on L1/L2 (No carrier)
3—CA code and carrier, P-code on L1/L2 and carrier
[J] RTK Rover
The [J] option allows the receiver to act as a rover station thatw utilizes the carrier
phase differential (both DBEN and RTCM message 18, 19, 20, and 21) data
transmitted from the base to compute differentially corrected positions. This option
requires the observables option to be 3. For RTCM messages type 18, 19, 20, and 21,
the U option is required in addition to the J option.