Section 5
Data Acquisition
Exhaust gas measurements can be recorded either through the SDMM card, the internal memory, or by
using the wireless data interface and Advanced DAS software.
5.1. SD Multi Media Card
The multi media card enables simple datalogging with the J2K. All datalogger records are stored in a csv file
(J2KDL-xx.csv / xx = records numbered consecutively), and, after transfer to the PC via card reader, can be
opened with Excel.
The SDMM Card function will operate with all J2K instruments containing software version 1.4 or higher.
SDMM Card should be 32 MB minimum, formatted to 16 bit FAT. ECOM sells the SDMM Card and Card
reader,
(J2K Multi-media card & card reader kit,
Part Number
rbr69865). The following brands have also
been proven to function properly:
SD cards or MM cards -SanDisk or Infinion
PC card reader - Belkin or SanDisk
Data logging Instructions
After having started the J2KN and allowed the analyzer to perform 3 minute initialization, you may set up the
data logging function.
Insert MM card in slot on top of J2KN remote. Remote will respond with message that MM card is
compatible.
From the Main Menu Screen, scroll to
Adjustments
, then select
Internal
, then select
datalogger
. Use
keypad on the remote to enter the frequency of data collection between 1 second and 255 seconds. Press
OK.
(Center button).
Press Menu button (bottom left on keypad) 2 times to return to Main Menu Screen.
Select
Data processing
& press
OK
. Select
datalogger
, press
OK
. The screen will display
start dl?
Press
Yes
. The data save icon will begin to flash in the upper right corner of the display.
Return to Main Menu Screen by pressing the
Menu
button once. Select
Gas Analysis
to view real time
readings from the analyzer.
To stop the data logging session, press
Menu
, select
Data Processing
, and then select
datalogger
.
Screen will display
finish dl?
, Press
Yes
.
To view the recorded data, remove the MM Card from the J2K Remote. Follow the instructions for connecting
and installing the card reader to your PC. Insert the MM Card into the card reader. You may now view the
contents of the MM card on your PC. Open with Excel. The files will be listed as J2KDL-xx.csv. The xx will be
the sequential order of the recordings to the MM card since last format / erasure, i.e J2KDL-00.csv, J2KDL-
01.csv, J2KDL-02.csv, would be the first 3 recording on the card.
