Leica Geosystems GPS System 500 - Technical Reference Manual - Manual (Page 125)

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5. Configuring the Receiver Technical Reference Manual-4.0.0en
Real-Time 1/2
Configures parameters used for Real-
Time operations.
Data Format - There are two extra
formats available for RTCM. You
have the possibility to output both
Code corrections together with raw
GPS data or high-precision phase
corrections by selecting the options
RTCM 1, 2, 18, 19 or RTCM 1, 2, 20,
21.
Also, the extra key RATES (F3) is
available.
RATES enables different messages
to be output at different rates.
If RTCM is selected as the Data
Format, you may select different rates
for the various message types.
E.g. Message 3 is always output
regardless of which RTCM messages
are selected. As this message does
not usually have to be constantly
output, you may select a lower rate
for it.
If Leica Data Format is selected, you
may select different rates for the raw
data transmission (Data Rate), the
rate at which the reference coordi-
nates are output (Coord Rate) and
the rate at which Reference Station
information (Point Id, etc.) is output
(Info Rate).
In addition to the configuration op-
tions in the standard mode, pressing
REF (F6) enables you to configure
Time Slicing. Time Slicing is the
possibility to send RTK messages
delayed. This is required when RTK
messages from different reference
stations are sent on the same radio
channel. Time Slicing on System500
works for radios, GSM and the
RS232 interface.
Time Slicing - Activates time slicing.
If set to Yes, two more lines become
available.
Used Ref Stations - Set the number
of reference stations in use. You can
have up to 4 reference stations from
where RTK messages are sent.
Time Slot - The time slot represents
the actual time delay. The number of
time slots is the number of reference
stations in use. The time delay equals
1 sec devided by the total number of
reference stations. If two reference
stations are used, the number of time
delay is 0.50.