Agilent Technologies E8403A Guía de instalación descargar pdf (Pagina 63)

Special Configurations Setting Up ParBERT 43G

Agilent 81250 ParBERT Installation Guide, February 2002 63

The graphic shows eight consecutive E4861A data generator/analyzer

modules with two frontends each.

Figure 41 Numbering of Connections

As the ports of the MUX/DEMUX modules are numbered, this drawing

makes it very simple to establish the connections correctly:

1 Connect the two cables of port #0 of the MUX/DEMUX module to the

upper frontend of the leftmost data generator/analyzer module.

Connect “normal” to “normal” and “inverted” to “inverted”.

2 Connect port #1 of the MUX/DEMUX module to the lower frontend of

the leftmost data generator/analyzer module.

3 Connect port #2 of the MUX/DEMUX module to the upper frontend of

the next data generator/analyzer module.

4 Follow that scheme until all ports of the MUX/DEMUX module are

connected.

Special Configurations

There may be situations where you need more than 16 data generators or

analyzers.

For example, you may need an extra generator for sourcing a clock pulse

to the device under test. Or, if you are testing a demultiplexer device with

built-in clock recovery circuits, you may need an extra analyzer for

conditioning the recovered clock signal.

Testing SFI-5 multiplexer and demultiplexer devices generally requires

more than 16 generator/analyzer channels at 2.7 Gbit/s. So this would

require more room than two VXI frames can provide.

In such cases it is recommended to add a third frame in the middle

between the pattern generators and the analyzers. This frame should

house the MUX and DEMUX modules.

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Agilent Technologies E8403A Guía de instalación Pagina 63