Frequently Asked Questions (FAQ)
for Test Accessories
|
| 1) Are your DC blocks Inner or Outer or Inner/Outer? |
| All of the models listed in the catalog are Inner only. For Outer or Inner/Outer, please contact JFW at mailto:sales@jfwindustries.com. |
|
| 2) What is the difference between an Impedance Matching Pad and an Impedance Matching Transformer? |
| Impedance matching pads use a resistive design to achieve the impedance change. Impedance matching transformers use a reactive design (often with a wire-wound toroid) to achieve the impedance change. |
|
3) What are the pros and cons of impedance matching transformer versus impedance matching pads?
|
| Matching Transformer Pros | Matching Pad Pros | | Low insertion loss | Wide frequency band (and works at DC) | | - | High power capabilities | | Matching Transformer Cons | Matching Pad Cons | | Narrow frequency band | High insertion loss | | Low power | - |
|
|
| 4) What are feedthru terminations? |
| A 50 Ohm feedthru termination is used to connect 50 Ohm RF cable to the high impedance inputs of test instruments (oscilloscope) and maintain proper impedance loading of the RF cable. |
