HP E1367A, E1366A manual Hewlett-Packard BNC Cables

Models: E1367A E1366A

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Some guidelines for user input cabling are:

For best high-frequency performance, user cabling should have at least two braided shields or one braid and a foil wrap.

Always use shielded coaxial cables with the characteristic impedance of the multiplexer used (50Ω or 75Ω). Keep cables as short as possible, especially in high-frequency circuits or pulse circuits where a rise/fall time of <50 nsec is critical.

Long cables can add delay time which can cause timing problems. All test equipment, such as counters, spectrum analyzers, and oscilloscopes, must be terminated in the characteristic impedance to minimize reflection loss.

To maintain low dc offset voltages, cables should have copper center conductors, not copper-clad steel. RG-233/U cable is recommended. Table 2-1 lists Hewlett-Packard BNCcables which meet these guidelines.

Table 2-1. Hewlett-Packard BNC Cables

Type

Length

Part Number

 

 

 

50 Ω coaxial

30 cm (12 in)

8120-1838

 

61 cm (24 in)

8120-1839

 

122 cm (48 in)

8120-1840

 

 

 

75 Ω coaxial

30 cm (12 in)

5062-6452

 

61 cm (24 in)

5063-0061

 

 

 

Chapter 2

Configuring the HP E1366A/E1367A RF Multiplexers 19

Page 19
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HP E1367A, E1366A manual Hewlett-Packard BNC Cables