User`s guide

197

Using the Pattern Generator

Setting Up the Proper Configurations

This section discusses setting up the configuration attributes and

parameters of the pattern generator.

If you are reloading existing configurations or downloading ASCII

vector files, refer to the Load operation in the disk drive menus of the

System.

To set up the configuration

1 From the Format menu, set the Vector Output Mode to either

full- or half-channel.

Make this selection first because clock frequencies and available

channels are affected.

In half-channel mode, only pods 1 and 3 are used.

2 Set the Clock Source to either internal or external.

An external clock is used when you need a clock frequency that is not

available internally, or if you need to drive the pattern generator timing

with an external reference.

3 Set the Clock Period for an internal clock or the Clock Frequency

for an external clock.

The external clock frequency information is required to select the

appropriate operating mode. Operating the pattern generator at an

external clock frequency higher than selected will result in erroneous

operation.