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Software Support - PETRAPro
Welcome to the support page for PETRAPro. This page is your best resource for
the most up-to-date information on the program.

If you do not find an answer to your problem/question, fill out and submit a
support request form.

IMPORTANT: Note that many software-related issues can be resolved simply by
making sure you have the latest version of the program installed. Updates for our
programs are released periodically that contain new features and bug fixes. In
many cases, if you are encountering a problem it may have already been
addressed in an update and you'll only need to install the update to fix your
problem.

How is PETRAPro different from PETRA for Windows?
PETRAPro is a completely new program that provides greater reliability and performance, while retaining the style and ease of
operation that PETRA users have come to appreciate. It offers new features and improvements to features found in PETRA.

With what operating systems is the program compatible?
PETRAPro is compatible with all Windows Operating Systems 98 or higher, including Windows 98, Windows 2000, Windows ME,
Windows NT, Windows XP and Windows XP SP2.

My computer does not have a serial port for download. What can I do?
All JAMAR equipment that interface with a computer currently use a serial (Com) port to do so. However, if you do not have a serial
port on your computer (or there is a conflict with another device), you can use a USB port by using a USB to Serial Adapter. These
devices allow serial peripherals, like JAMAR equipment, to interface with a USB port. Full details.

How do I find the version number or serial number of the program I am using?
To locate the version or serial number, click on the Help menu and select About PETRAPro.

What is the PHF? How is it calculated?
PHF stands for Peak Hour Factor, a number which represents the relationship between the peak hour volume and the maximum
rate of flow within the hour. Full details.

The In and Out totals on the intersection plot appear to be reversed. Are they?
No. The In and Out listing of the Intersection plot are always in reference to the intersection itself. Full details.

When I attempt to use the program, I get an error message regarding 'access rights' either when just starting the program or
trying to open files. Why is that?
In most cases, this is related to the permissions you have been assigned as a user on your computer. Full details.

In gap studies, the bins used are 2-3, 4-5, 6-7, etc. How does the program treat gaps that fall between whole numbers, like 3.2,
5.5, 7.8 etc?
PETRAPro truncates, rather than rounds, any fraction of a second from the end of the value, so 3.2 would be recorded as 3, 5.5
recorded 5 and 7.8 recorded as 7. Full details.

How does the Save Print Defaults button in the print Setup work?
The Save Print Defaults button is designed to allow you to save a specific set of print setup defaults to be applied to new files that
are created. Full details.

The Print and Preview buttons in the print setup are not active (grayed out) and can't be clicked. Why?
This generally occurs if no 'groups' have been selected yet in the Combine Groups field. You must select at least one group in order
to produce a report. The Print and Preview buttons will not be active until at least one group is selected.