- -
25
STORING
AND
TRANSFERRING
DATA
TO
A
PERSONAL
COMPUTER
The
HD21...4.2
instruments can be connected to a personal computer via an RS232C serial port or
USB 2.0 port, and exchange data and information through the DeltaLog9 software running in a
Windows operating environment. The models can send in real time input measured values directly
to a PC, through the PRINT function; the HD21...4.2 can also store the values measured by using
the
Logging
function (LOG key) in their internal memory. If necessary, the data stored in the
memory can be transferred to a PC later.
T
HE
L
OGGING
FUNCTION
-
ONLY FOR
HD21...4.2
The
Logging
function allows the recording up to 36000 measurements registered by the probe
connected to the inputs. The time interval between two consecutive measurements can be set from 1
second to 1 hour. The logging starts by pressing the LOG key and ends by pressing the same key
again: the data memorized in this way form a continuous block of data.
See the description of the menu items on page 10.
If the automatic turning off option between two recordings (MENU >>
Sleep_Mode_LOG)
is
enabled, upon pressing the LOG key the instrument logs the first data and turns off. 15 seconds
before the next logging instant, it turns on again to capture the new sample, and then turns off. In
this phase, the display will signal that the instrument is logging using the flashing message: "LOG
ON".
The data stored in the memory can be transferred to a PC using the DUMP LOG command: press
simultaneously the FUNC/ENTER and PEAK/MENU keys, using ENTER select the
“>>>_LOG_DUMP_or_ERAS” item, and then press on the LOG/DumpLog key. During data
transfer the display shows the message DUMP; to stop the data transfer press ESC on the
instrument or on the PC.
C
LEARING THE MEMORY
-
ONLY FOR
HD21...4.2
To clear the memory use the Erase Log function (press simultaneously the FUNC/ENTER and
PEAK/MENU keys, using ENTER select the “>>>_LOG_DUMP_or_ERAS” item, and then press
on the SERIAL/EraseLOG key).
The instrument starts clearing the internal memory; at the end of the operation, it goes back to
normal display.
NOTES:
Data transfer does not cause the memory to be erased; the operation can be repeated as many
times as required.
The stored data remain in the memory independently of battery charge conditions.
In order to print the data to a parallel interface printer, you must use a parallel-serial adaptor (not
supplied).
The direct connection between instrument and printer via a USB connector does not work.
Some keys are disabled during logging. The following keys work: HOLD, FUNC (Max-Min-
Avg) and SERIAL.
Pressing the HOLD, REL FUNC and PEAK keys has no effect on the logged data if these keys
are pressed
after
starting the recording, otherwise the following is valid.
The recording started with the display in HOLD mode proceeds normally with the actual
measured values (that is, not in “HOLD” mode). Only the display is frozen to the values present
when the HOLD key was pressed.
