Technical data

}

while(question_reg() && QUESTION_REG_10);

Question_reg

returns a value that includes bit 10 ("1024"), this is an indication that

the error detector has not yet synchronized to the new pattern. In this case, the

instrument has not yet settled.

N O T E

File accessing, especially for large files can take some time. Control programs must

be prepared for time-outs of this size.

Reading the Serial BERT's Status

Reading the Serial BERT's Status - Concepts

The Serial BERT has a set of status registers that you can use to monitor the status

of the hardware, software, and any running tests.

Specifically, it has the following registers:

• Status Byte

The Status Byte is a single register that stores the events occurring on the

other registers.

• Standard Event Status Register

The Standard Event Status Register monitors some non-critical errors and basic

operations.

• Questionable Data Status Register

The bits in the Questionable Data Status Register are set when certain events

occur in the Serial BERT that can lead to questionable results.

• Operation Status Register

The Operation Status Register indicates when certain operations have been

completed.

• Clock Loss Status Register

The Clock Loss Status Register indicates if the Serial BERT's pattern generator

or error detector have lost the clock signal.

3 Recommended Programming Techniques

24 Agilent J-BERT N4903B High-Performance Serial BERT

Overview of Registers