| Home |
| Search |
| Today's Posts |
|
|
|
#1
|
|||
|
|||
|
Clearly, if I had an o-scope and a waveform generator, I wouldn't be farting
with this analyzer!! ![]() "Tim Shoppa" wrote in message om... "Jason Dugas" wrote in message ... I'm interested in measuring the velocity factor of some coax I have (more of an exercise than necessity). In order to do this, the MFJ-259 Operations ... What would be a good way of making this connection? Do you have a scope and a pulse generator? If so, just make a simple TDR (Time Domain Reflectometry) setup to measure the reflection from a un-terminated or shorted far end of the cable. You will get much more accurate results with substantially less effort. Don't get me wrong, the MFJ-259 is a good instrument. It's just that TDR is so quick and easy and unambiguous for propogation delay measurements. Tim. |
|
#2
|
|||
|
|||
|
Clearly, if I had an o-scope and a waveform generator, I wouldn't be farting
with this analyzer!! ![]() "Tim Shoppa" wrote in message om... "Jason Dugas" wrote in message ... I'm interested in measuring the velocity factor of some coax I have (more of an exercise than necessity). In order to do this, the MFJ-259 Operations ... What would be a good way of making this connection? Do you have a scope and a pulse generator? If so, just make a simple TDR (Time Domain Reflectometry) setup to measure the reflection from a un-terminated or shorted far end of the cable. You will get much more accurate results with substantially less effort. Don't get me wrong, the MFJ-259 is a good instrument. It's just that TDR is so quick and easy and unambiguous for propogation delay measurements. Tim. |
|
#3
|
|||
|
|||
|
"Jason Dugas" wrote in message ...
I'm interested in measuring the velocity factor of some coax I have (more of an exercise than necessity). In order to do this, the MFJ-259 Operations ... What would be a good way of making this connection? Do you have a scope and a pulse generator? If so, just make a simple TDR (Time Domain Reflectometry) setup to measure the reflection from a un-terminated or shorted far end of the cable. You will get much more accurate results with substantially less effort. Don't get me wrong, the MFJ-259 is a good instrument. It's just that TDR is so quick and easy and unambiguous for propogation delay measurements. Tim. |
| Reply |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| End effect, velocity propagation question | Antenna | |||
| Measuring radiation resistance | Antenna | |||
| Shielded Loop - Velocity Factor? | Antenna | |||