User guide

3
In the Aux In section, define whether the Serial BERT should insert pattern B
in Level Sensitive or Edge Sensitive mode.
See “Aux In” on page 165 for more information on the different available
modes.
4
Click OK to close the dialog box.
Suppressing the Outputs via External Signal
You can configure the Serial BERT to suppress the output according to an external
signal:
1
Connect an external instrument to the Aux In port.
The signals received at this port must be TTL-compatible. The granularity for
the insertion of pattern B via external signal is 512 bits.
2
Click Alt. Pattern and Aux In menu item from the PG Setup submenu to open
the Alternate Pattern Control dialog box.
3
In the Aux In section, select Output Blanking.
See “Aux In” on page 165 for more information on the different available
modes.
4
Click OK to close the dialog box.
Pattern Alternation - Reference
The Serial BERT offers the following options for alternating between pattern A and
pattern B:
N O T E
These functions are only available if Alternate Pattern is selected in the Pattern
Properties dialog box.
Continuous A
Select this option to send out only pattern A repeatedly.
A0 A1 A2
A A A A A A A A A A A AData Out
4 Setting up the Pattern Generator
164 Agilent J-BERT N4903B High-Performance Serial BERT