Tutorial 7
Keysight 34970A/34972A User’s Guide 269
– Cable Capacitance – Varies with the insulation type, cable length, and cable
shielding. Cables should be kept as short as possible to minimize cable
capacitance. In some cases, low-capacitance cable can be used.
The table below lists typical cable specifications.
AWG
Ω / ft (2 conductors)
at 25 °C
14
16
18
20
[a]
22
24
[a] Recommended wire size for the screw terminals on 34970A/34972A plug-in modules.
5 mΩ
10 mΩ
15 mΩ
20 mΩ
30 mΩ
50 mΩ
Cable Type Nominal Impedance Capacitance Attenuation
Twisted Pair 100Ω at 1 MHz 10 to 20 pF/ft Up to 1 dB/100 ft at 1 MHz
Shielded Twisted Pair 100Ω at 1 MHz 10 to 20 pF/ft Up to 1 dB/100 ft at 1 MHz
Coaxial 50Ω or 75Ω at 100 MHz 15 to 25 pF/ft Up to 6 dB/100 ft at 100 MHz
Twisted Pair Ribbon 100Ω at 1 MHz 15 to 20 pF/ft Up to 1 dB/100 ft at 1 MHz
To Next Page
Loading...
