ZEPIRO D2O VCP, Руководство по эксплуатации продукта, Страница: 30 / 40

26 - D2O VCP Product Manual
COMMAND SYNTAX DETAILS
acq -t <hh> Sets the data acquisition synchronisation time as an Hour of the day (0 - 23) Greenwich
Mean Time (GMT).
The data synchronisation time is defaulted to 00:00 GMT. The D2O features a fixed hourly
sampling interval and data sampled within 24h is synchronised to a “GMT-day”.
Shifting the synchronisation time parameter
<hh>
(in hours) provides a means to align the
D2O’s first reading of the day to correspond to that of a desired time zone. The offset must
be applied as a positive whole hour value only. For example if the desired time zone is GMT
-04:00 the synchronisation time parameter would be 20, making the synchronisation occur
at midnight local time.
It may also be helpful when the last data acquired needs to be delivered before a certain
time. For example a typical application might be to sync the previous day’s total reported
measurement to 9AM local time. To achieve this for Brisbane, Australia (GMT+10:00) it
would make it 11:00PM GMT, therefore 23 would be entered as the parameter.
This is an Admin Restricted c ommand and cannot be set until the
admin
command has
been executed.
Example: Scenario where the D2O synchronisation time needs to align with midnight in the local time zone for Brisbane, Australia
(GMT +10:00).
acq -t 10
OK
COMMAND SYNTAX DETAILS
acq -c <ch>
Sets the electrical type of the input channel to correspond to that of the connect input
device. Parameter at <ch> can be either:
10V The connected device supplies its readings within a range of 0 to 10 Volts (default)
5V The connected device supplies its readings within a range of 0 to 5 Volts
20mA
The connected device supplies its readings within a range of 0 to 20 Milliamps
This is an Admin Restricted c ommand and cannot be set until the
admin
command has
been executed.
Example: Setting the D2O’s input channel to correspond to a device that supplies a 0 to 5 Volt output for its reading.
acq -c 5V
OK
COMMAND SYNTAX DETAILS
acq -p <scale>
The pre-scale setting exists as a battery saving mechanism to stop the whole D2O system
needing to initialise every time a single pulse is recorded. Without this the D2O would
rapidly deplete its battery. Accurate reporting of the accruing pulse counts are still
conducted as part of the hourly readings and this setting only applies to pulses that are
recorded in between the hourly readings.
The parameter at
<scale>
can be set between 1 and 255, and indicates the number of
pulses that will occur before the D2O initialises to record the value. The default is every
10
pulses.
Individual site factors, such as the likely count rates and desired battery endurance, should
be carefully considered before modifying this setting.
This is an Admin Restricted c ommand and cannot be set until the
admin
command has
been executed.
Example: Setting the pre-scale value to be 150 pulses
acq -p 150
OK