Agilent Technologies J-BERT N4903B, User Manual, Page: 165 / 572

Continuous B
Select this option to send out only pattern B repeatedly.
B0 B1 B2
B B B B B B B B B B B B Data Out
Alternate AB
Select this option to alternately send out patterns A and B (A, B, A, B...).
Data Out
B0
B B B B
A0 A0
A A A A A A A A
B0
B B B B
Single Shot B
Select this option in the
Alternate Pattern Control
dialog box to enable the
Insert
B
button on the main display.
When you press the
Insert B
button, pattern B is inserted into the continuous
output of pattern A.
Data Out A A A A A A A A B B B B A
A0 A0 B0 A0
A A A
Insert B pressed
Aux In
In this section you can enable the Aux In port to control the output pattern. Aux
In can receive signals that control alternate patterns or blank the output.
The signals received at this port must be TTL-compatible. The granularity for signals
at this port is 512 bits.
The following options are available for
Aux In
:
•
Disable
With this option selected, the signal at the Aux In port will be ignored.
•
Level Sensitive
– If
Aux In
is logic high, pattern B is sent.
– If
Aux In
is logic low, pattern A is sent.
Setting up the Pattern Generator
4
Agilent J-BERT N4903B High-Performance Serial BERT 165