Technical data

Preventive Maintenance 3
Agilent N5508A Hardware Reference 35
• Inspect the connectors before connection; look for dirt, nicks, and other
signs of damage or wear. A bad connector can ruin the good connector
instantly.
• Clean dirty connectors. Dirt and foreign matter can cause poor electrical
connections and may damage the connector.
• Minimize the number of times you bend cables.
• Never bend a cable at a sharp angle.
• Do not bend cables near the connectors.
• If any of the cables will be flexed repeatedly, buy a back-up cable. This will
allow immediate replacement and will minimize system down time.
Before connecting the cables to any device:
• Check all connectors for wear or dirt.
• When making the connection, torque the connector to the proper value.
Proper connector torque
• Provides more accurate measurements
• Keeps moisture out of the connectors
• Eliminates radio frequency interference (RFI) from affecting your
measurements
The torque required depends on the type of connector. Refer to Table 12.
Do not overtighten the connector.
Never exceed the recommended torque when attaching cables.
Connector wear and damage
Look for metal particles from the connector threads and other signs of wear
(such as discoloration or roughness). Visible wear can affect measurement
accuracy and repeatability. Discard or repair any device with a damaged
connector. A bad connector can ruin a good connector on the first mating. A
magnifying glass or jeweler’s loupe is useful during inspection.
Tab l e 12 Proper Connector Torque
Connector Torque cm-kg Torque N-cm Torque in-lbs Wrench P/N
Type-N 52 508 45 hand tighten
3.5 mm 9.2 90 8 8720-1765
SMA 5.7 56 5 8710-1582