I own some great cable but they are stiff, almost like TV antenna cables, it can be a bit annoying when trying to use it to measure on projects. Is there a cable >500Mhz that is flexible and maybe thin? Of cause do I not mind if the cable can be used for much higher frequencies is double shielded and so on, but that would also make the cable less to my wishes, do I think🙂
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Thanks, as a noob is there any specification that can help me to select the most flexible of them you sugests?
Depends what you need. Is impedance important to you? You need special diameter to fit existing BNC?
If you need shielded coax cable for general purpose like measurement, I suggest to cut old VGA cable from computer monitor. Plenty of shielded coaxial cable inside.
If you need shielded coax cable for general purpose like measurement, I suggest to cut old VGA cable from computer monitor. Plenty of shielded coaxial cable inside.
Flexibility is determined by the cable construction. RF Cable like RG58 type is reasonably flexible more-so if you can find the type with a foam dielectric.
Smaller diameter cables will be more flexible but tend to be more lossy, to overcome the loss you can use the Teflon style cables but they will be more rigid.
If you are performing measurements (Audio ?) why not use a oscilloscope probe.
Smaller diameter cables will be more flexible but tend to be more lossy, to overcome the loss you can use the Teflon style cables but they will be more rigid.
If you are performing measurements (Audio ?) why not use a oscilloscope probe.
I think I have to get 50 Ohm cables when used for oscilloscope, signal gen and so on?
The reason for me wanting extra coaxial cable, beside the probes, is so I can connect anyone of my gear (not much gear... yet🙂 to the circuit or to other gear. But probes do in fact have fairly bendable cables, what are they made of, can one buy lose cables of that type?
The reason for me wanting extra coaxial cable, beside the probes, is so I can connect anyone of my gear (not much gear... yet🙂 to the circuit or to other gear. But probes do in fact have fairly bendable cables, what are they made of, can one buy lose cables of that type?
'scope probes are a very specialized beast, but they are not suitable for carrying signals other than between a scope probe and scope front-end with 1M input resistance and low capacitance, they have distributed resistance, high characteristic impedence and are designed for the specific job.
And for >500MHz passive probes get very expensive. A probe only has its full bandwidth in 10:1 divide mode too, otherwise the performance is drastically reduced in the frequency domain.
And for >500MHz passive probes get very expensive. A probe only has its full bandwidth in 10:1 divide mode too, otherwise the performance is drastically reduced in the frequency domain.
thank you🙂
LOL yes that's the electronic world for ou, nothing is so simple🙂
I'll try look at BNC test leads.
LOL yes that's the electronic world for ou, nothing is so simple🙂
I'll try look at BNC test leads.
This are one half century old generic classifications. They only indicate impedance and diameter.
My old Belden catalog lists 18 different RG-59 cables each optimized for a different use.
I would look foe a coax microphone or musical instrument cable.
* * * * * * * *
maybe Belden:
8411, 8401, 9396, 8410, 9394, 9778, 9395
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Thanks, I have until now also stumled upon several different cables with the same name, I did just thought it was me, missing something. And what people is calling flexible, is warying a great deal! I have even read of RG-142 being called super flexible! 🙂
About music cables, to me does it look like music cables today is mostly XLR balanced cables, not shielded or coaxial.
About music cables, to me does it look like music cables today is mostly XLR balanced cables, not shielded or coaxial.
You can get 500 MHz down almost any cable as long as you can work with what is left at the far end. All cables will have loss at higher frequencies. Some have much more loss.
Special construction methods allow more flexibility but may not hold impedance as well or withstand abuse as well.
If you are looking for something to use with a scope buy a scope probe. Making one is not a practical option. For connecting cables or 1X probing some of the smaller Canare or Mogami cables are the way to go. They have focused on more flexible construction and still meet very high performance standards. Something like this Canare cable would be a great choice: L-1.5C2VS for flexibility and size however its very small. However a spool is $150 and a lot of wire (200M). I'm not sure if anyone sells smaller lengths.
Special construction methods allow more flexibility but may not hold impedance as well or withstand abuse as well.
If you are looking for something to use with a scope buy a scope probe. Making one is not a practical option. For connecting cables or 1X probing some of the smaller Canare or Mogami cables are the way to go. They have focused on more flexible construction and still meet very high performance standards. Something like this Canare cable would be a great choice: L-1.5C2VS for flexibility and size however its very small. However a spool is $150 and a lot of wire (200M). I'm not sure if anyone sells smaller lengths.
Thanks a lot for your comment and advice. I am not sure but all I could find were a 75 Ohm cable, is that right?
The usage is fairly simple, I will use the cables to everyday testing on the bench, I am just tired of using cables that are as flexible as a steel-wire coat hanger! 🙂
I would just like to get a cable that do meat the flexibility and diameter that look more like a mains cable instead of a wall installation cable. 🙂
I would just like to get a cable that do meat the flexibility and diameter that look more like a mains cable instead of a wall installation cable. 🙂
Sorry I thought I had explained that correctly but I'll try again.
I am looking for pliable bnc-bnc coaxial cable, capable of 500 MHz or higher is preferable. I will like if they are thin (way less thick then cheap TV 75 Ohm cables).
I am looking for pliable bnc-bnc coaxial cable, capable of 500 MHz or higher is preferable. I will like if they are thin (way less thick then cheap TV 75 Ohm cables).
All RF cables will work beyond 500Mhz, however attenuation will depend on the cable construction and length. The reason why the 75Ohm tv cables are so thick is due to the double shielding like RG6, not because they are cheap.
Unless your working with RF devices then the requirement for test cables to go beyond 500Mhz is not really necessary.
Teflon RG type cables are not that flexible, the smaller diameter styles like RG316 have slightly more loss than the standard RG58 types.
RG58 is flexible enough for everyday test leads and is less than 1db loss per metre at 900mhz.
Unless your working with RF devices then the requirement for test cables to go beyond 500Mhz is not really necessary.
Teflon RG type cables are not that flexible, the smaller diameter styles like RG316 have slightly more loss than the standard RG58 types.
RG58 is flexible enough for everyday test leads and is less than 1db loss per metre at 900mhz.