Fluke 1760 Инструкция по эксплуатации онлайн [107/110] 4540

Fluke 1760 Инструкция по эксплуатации онлайн [107/110] 4540
Options and Accessories
Options 6
6-29
garmin-settings.bmp
2. Put the GPS receiver in a location with clear view to the sky.
3. Connect the GPS-receiver to the Instrument 25-pole feature connector on top.
4. Power on the Instrument. The instrument checks if there are NMEA data
available. If yes it waits max. 5 min for synchronization pulses from the GPS
receiver. Otherwise, the internal time is taken for measurements.
5. The Pulse LED on the Instrument will start to blink at the reception of
synchronization pulses. For LED functions see LEDs Time Sync.
Handling of Date/Time in the Instrument
There are two ways for changing date/time:
Hard change: Date/time (used for timestamps of measurement values) are set to
the actual time immediately
Smooth change: Measurement date/time are slowed or accelerated a little bit until
they reach the actual time
Changing Date/Time: No Measurement is Active
When no measurement is running, then time changes by GPS or software are always
done immediately.
Changing Date/Time during a Measurement
During a measurement only smooth time changes can be done.
When the GPS signal becomes available during a measurement, then the system time is
set immediately and the measurement time adapts slowly (±0.01 %) to the new system
time. This provides a correction of max. 8.64 seconds per day. The error for the power
frequency measurement is <0.005 Hz at 50 Hz and <0.006 Hz at 60 Hz (IEC61000-4-30
5.1.2 requires that the measurement uncertainty never exceeds ±0.01 Hz).
If the user wants to adjust date/time of the instrument via the software then he gets the
following selection menu:
Smooth time adaptation
Hard time change (the measurement will be stopped)

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