2635 manual - BK Precision

Furthermore the software package includes quasi peak and
average calculations. In its operating mode ‘zero span’ the
instrument acquires data over a period of 1 s, followed by the
averaging of the data. Also, the quasi peak values are calculated
by applying digital filter calculations.
Several ways exist to configure the software program:
1. The frequency response curve of each component must be available
and stored inside the PC. There is no limit for the number of
components; nevertheless the data files must have different names
2. An arrangement of devices as EMC test system is given an evident
file name and stored as desired. A maximum of five components
might be arranged to build up a single configuration, which seems to
be sufficient for ordinary applications. An ideal cable is used to
simulate nonexistent components. There is no limit for the number
of arrangements; nevertheless the filenames must be different.
3. According to the regulations certain signal levels may not be
exceeded. Thus limit lines have to be defined before they can be
displayed on the screen. Any number of limit lines can be defined, as
long as they are given different file names. A maximum of two limit
lines can be displayed in one window.
4. After the completion of these steps a test system can be arranged
by using the limit lines and the component configurations. At least it
is necessary to enter the values for start frequency, stop frequency,
bandwidth, damping, and the measuring procedure to be used.
After the set-up as described the system is ready to perform
complex EMC test procedures, which - in most applications -
can be executed automatically.
Definition of new components
To add a new component select the menu called Data New/
Copy and then Loss/Gain-Components. The according window
will appear. A field to be filled in with the name of a new
component is located in the upper area. A maximum number of
80 characters may be entered, including space characters. Each
entry must be closed by a carriage return. After a mouse click on
Add New the new component will be added to the database.
By using the Copy function data of an existing component can
be copied to define a new component. This procedure is
recommended if only few data are different.
48 Subject to change without notice