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47200 Instruction Manual (Rev. 1)
5
OTHER RELEVANT FEATURES OF GSM
5.1
Battery Low Warning
The voltage of the internal rechargeable battery used in GSM is monitored continuously
during routine operation. Two warning levels are provided.
If the battery is low but still usable, the dashed line
of most menus will include
Battery Low
.
For example, the first
Measure
screen will become:
At this time, GSM may still be used but the USB lead should be connected to an active
PC or a USB power adapter to
charge the battery as soon as possible
.
If the battery is so low that GSM cannot operate, then the instrument switches OFF im-
mediately. Data which have been stored will be retained but GSM may not be used until it
is connected to an active PC or a USB power adapter using the USB lead provided.
Clearly, it is not advisable to allow the battery to drop to this critical level.
5.2
Memory Limit Warning
Each time the user starts a new measurement, GSM checks that data memory is suffi-
cient to store the new datum.
If the available memory is too low, the request is refused and the user is advised to trans-
fer the stored data to a PC and/or to erase the existing data stored in memory.
In practice, this critical situation should never occur, as the user is given a clear warning
each time a measurement is made, when the space available is not sufficient for at least
10 measurements.
The GSM memory will store more than 500 tests.
5.3
Calendar Clock
The date and time settings of GSM’s internal clock may be adjusted manually, see para-
graph 4.5.1, option 14) .
The GSM internal clock, which maintains real time even while GSM is switched off, is
synchronised automatically with the PC to which it is attached.
Synchronising occurs when data is downloaded from GSM to the PC and when force
measurements are monitored live on the PC.
