Vaisala vLog 4.5 - Manual (Page 111)

Appendix: FAQs and Troubleshooting
Vaisala Veriteq vLog 4.5 105
loggers and Spectrum software files. This means it works with all
previous versions of loggers or files created from those loggers.
The key difference is that Spectrum loggers use a non-secure file
format.
Q: I have recently purchased a new logger. Will it work with my older
version of vLog software?
A: Not always. In our pursuit of continual product improvement,
we periodically upgrade logger hardware or release new logger
models. Unfortunately, these changes may not be recognized by
an older version of Vaisala Veriteq vLog software and can result
in difficulties. For that reason, each logger that you purchase
includes a note indicating which software version it must be used
with. The safest choice is to always upgrade to the latest version
of software. Contact Vaisala Canada Inc if you require a software
update.
Q: What is the difference between Vaisala Veriteq VL-Series Loggers
and Vaisala Veriteq SP-Series Data Loggers (formerly Spectrum)?
A: The primary difference is the VL-Series models provide you
with the ability to obtain additional information and utilize security
features. Vaisala Veriteq VL-Series Loggers allocate a portion of
their internal memory to store important calibration-related
parameters.
The stored parameters include the following:
• The company or person who last calibrated the data logger
• The last calibration date
• The next calibration date
• Security information (to prevent unauthorized calibration or
manipulation of the data in the logger).
Q: Does the software account for daylight savings time changes?
A: Yes. Daylight savings time changes are automatically
accounted for in all graph and tabular displays.
Q: How many logger files can I overlay onto the same graph?
A: You can overlay many channels of data onto the same graph;
in testing, we inserted more than 100 channels successfully.