Maxim Integrated HFAN-09.5.0: Pattern Creator/Converter Software - Manual (Page 5)

Application Note HFAN-9.5.0 (Rev.1; 04/08) Maxim Integrated
Page 5 of 8
• Many pattern generators can only use
pattern files up to 8 million bits in length
and may have limitations to the number of
CIDs that they can tolerate.
• Once the Done button is pressed the pattern
sequence and statistics are erased. The
information should be written down before
pressing the Done button if it will be needed
at a later time.
2.7 Example
A common use of this software is to add sections of
CIDs to existing PRBS patterns in order to test the
response of a device with data that has low
frequency content. For example, to create a 2 7 -1
PRBS + 100CID test pattern, the following steps are
used.
1. Click the Output File Name button and
enter the name and location of the file that
will be created (Figure 8)
Figure 8. Creator Example Step #1
2. Click the PRBS 2^7-1 button.
3. Click on the pull down menu (Figure 9) and
verify that Times to Repeat the PRBS is
selected, enter 1 in the text box, verify that
the Non-Inverted option is selected and
then click the OK button.
Figure 9. Creator Example Step #3
4. The first sequence of the pattern is now
shown in the Pattern Sequence box and the
corresponding statistics of the pattern to this
point are shown in the Pattern Statistics
textbox (Figure 10).
Figure 10. Creator Example Step #4
5. Add 100 1’s to the end of the pattern by
clicking the Consecutive Digits button,
entering 100 in the box, selecting the Ones
option and then by clicking on the OK
button (Figure 11).
Figure 11. Creator Example Step #5
6. To balance the pattern, two additional
sequences need to be added. Namely, the
inverse of the first two sequences. To add
the next sequence, repeat step #3, except
with the Inverted option selected (Figure
12). Note that after OK button is clicked, the