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Figure 2-8 shows the internal switch diagram for the various HP
single-pole, multi-throw switches. All switches are shown in the "OPEN"
position. To minimize loss at high frequencies, use the following guidelines
when making connections.
• For frequencies up to 18 GHz, use a good quality flexible type cable
and SMA connectors.
• For frequencies >18 GHz, use semi-rigid type cable and APC 3.5
connectors.
Figure 2-9 shows the internal schematic of a single attenuator section.
Figure 2-9. Attenuator
Figure 2-8. Internal Switch Diagrams
28 Configuring the HP E1368A/69A/70A Modules Chapter 2