- -
86
THE
FUNCTIONS
OF
STORING
AND
TRANSFERRING
DATA
TO
A
PERSONAL
COMPUTER
The DO9847 multifunction datalogger may be connected to a personal computer by means of the
RS232C serial port and exchange data and information by means of the program Delta Ohm
DeltaLog3
®
which operates in a Windows environment or with HyperTerminal. The DO9847 can
send the values measured by the three inputs directly to the PC in real time using the functions that
may be activated with the key <4/S
ERIAL
O
UT
> or it can store in its internal memory the data
measured with the
Record
function (key <6/RCD>) and the
Logging
function (key <2/LOG>): in
the second case the stored data may be transferred to the PC later.
T
HE
R
ECORD FUNCTION
The
Record
function stores in the memory the
maximum
,
mean
and
minimum
values of the meas-
urements of the three channels and updates them when new samples are logged. There are two log-
ging functions: one at fixed time interval (equal to one second) and one ‘with command’. The first
function is activated with the command
rcdGO
(key <F1>) and terminated with the command
rcdSTOP
(key <F2>): each second the values of the two inputs are measured and the maximum,
mean and minimum values updated.
Ti
A1
b1
c1
The ‘Command Record’ is activated with the F2 function key. Unlike the
rcd
GO function where the
interval sampling is one second, with this function a new sample is logged each time the F2 key is
pressed. For each new logged sample, the heading M(n=00), which is in the middle of the controls
bar, increase of a unit.
Ti
A1
b1
c1
The logged data increase the ones which are already logged; therefore it is necessary to cancel the
previous values with the
rcd
CLR key (<F3> key) before starting with a new measurement cycle.
Using the command
DATACALL
(key <5/DATA CALL>) the minimum -
min
– function key <F1>,
maximum -
max
- function key <F2> and mean -
avg
- function key <F3> values for all the data
present in the memory are called directly to the display: this may be done after having concluded
