|
FAQs for
Programmable Attenuators |
|
1) What
are the pros and cons of solid-state versus relay
programmable attenuators? |
|
Solid-State
Pros |
Relay
Pros |
|
Typical MTBF = 250,000
hours |
Wide frequency
range (works at DC) |
|
Excellent attenuation repeatability |
Higher input power |
|
Switching speed (microseconds) |
Low harmonic distortion |
|
Solid-State
Cons
|
Relay
Cons |
|
Increased harmonic
distortion |
Switching speed (milliseconds) |
|
Lower input power |
(1 million operations per relay typical) |
|
| |
|
2) Can
I use a solid-state programmable attenuator to
perform handover or signal fading simulation? |
|
Yes. JFW
supplies programmable attenuators and handover test
systems to network providers performing fading
simulations of cell phone signals. |
| |
|
3) Are
the programmable attenuators bi-directional? |
|
All of
JFW's programmable attenuators are bi-directional
unless noted differently on the specification sheet. |
| |
|
4) I
need a custom programmable attenuator designed. How
much are your typical NREs (non-recurring
engineering change)? |
|
JFW does
not charge NREs. Please send your custom
requirement to
sales@jfwindustries.com. |
