Agilent Technologies DP111 - Manual (Page 46)

User Manual: Agilent Acqiris 8-bit Digitizers Page 46 of 59
5. Running the Geographic Mapper Application
5.1. Who needs a Geographical Map of Modules
The Geographic Mapper application gives the user the possibility of telling the Acqiris driver crucial details of the
physical position of modules when this information cannot be deduced directly. It allows the driver to correctly
adjust trigger and clock delays between the different modules of an AS bus multi-Instrument and arrange the
modules in an intuitive order.
The Geographic Mapper application has been implemented as a Wizard with the goal of learning the physical
position of each module of a multi-bus system. The driver already knows the logical Bus and logical Slot numbers of
each Acqiris unit present. However, because of varying conventions for the compactPCI slot arrangement on a bus,
this is not sufficient to determine the physical position. Furthermore, with the aid of the map, the software can ensure
that the modules of an Auto-defined multi-Instrument will be ordered to correspond to increasing physical slot
number.
NOTE: The unusual slot numbering convention of the CC121 is documented in the CC121 CompactPCI Crate User
Manual. The CC10X crates have a simpler slot numbering convention that the Acqiris driver already takes into
account. CompactPCI Crates from other manufacturers represent an unknown element.
NOTE: The Geographic Mapper is of use for some AS bus systems in CC121 crates and, perhaps, crates from other
manufacturers. CC121 crate configurations with both an Acqiris acquisition module in one of the last 7 slots and
with the PC running under Windows 2000 or XP will not need the Geographic Mapper. Geographic Mapper is also
needed for U1071A-FAMILY AS bus 2 systems in some PCI configurations. Users who do not need Geographic
Mapper do not need to read this chapter any further.
5.2. When should the Geographic Mapper Application be used
The application needs to be used whenever the bus or slot configuration of the system changes in a fundamental way.
The most obvious trouble symptom is that an expected multi-Instrument was not found. Alternatively the driver can
issue error messages that the AcqirisLive application and other programs will see. Among them are
Modules are not contiguous in AS bus combination ACQIRIS_ERROR_MODULES_NOT_CONTIGUOUS
AS bus Candidate Modules not on same bus ACQIRIS_ERROR_MODULES_NOT_ON_SAME_BUS
'AcqGeo.map' file is invalid or corrupted ACQIRIS_ERROR_INVALID_GEOMAP_FILE
In all of these cases the Geographic Mapper application should be run to ensure that the map file is up to date.
If desired the Geographic Mapper application will generate a default configuration in which it allows the driver to
make all of the choices. This is done by specifying "None (Disable Geographic Map)" as the desired configuration in
"Step1: Crate count" of the application.
5.3. How to run Geographic Mapper
After software installation you will find Geographic Mapper in the AcqirisApp directory of the installation directory.
After being started the program will learn about the Acqiris devices present and then show a screen like the one
below:
The choice of the number of crates ranges from None up to the number of bus segments that the driver has found
containing Acqiris modules. If you choose None and save the resulting AqGeo.map file the system will behave in its
natural way without any additional user provided information. If you want to give the driver information on the
physical position of modules you should select the appropriate number of crates. If the number of crates does not