# Question about SMA connector on CEVAL-055

**URL:** <https://forum.digikey.com/t/question-about-sma-connector-on-ceval-055/35437>\
**Category:** Development Boards, Kits, Programmers\
**Tags:** crystek-corporation, between-series-adapter-cables, evaluation-boards, associated-products\
**Created:** [October 5, 2023, 1:05pm UTC](https://forum.digikey.com/t/question-about-sma-connector-on-ceval-055/35437 "2023-10-05T13:05:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![khurram6050](https://avatars.discourse-cdn.com/v4/letter/k/b5ac83/32.png) [@khurram6050](https://forum.digikey.com/u/khurram6050)\
**Post date:** [October 5, 2023, 1:05pm UTC](https://forum.digikey.com/t/question-about-sma-connector-on-ceval-055/35437/1 "2023-10-05T13:05:44Z")

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Hey! I do not really know a whole lot about hardware or even connectors for that matter. I was looking at the CEVAL-055 ([https://www.digikey.com/en/products/detail/crystek-corporation/CEVAL-055/1826573](https://www.digikey.com/en/products/detail/crystek-corporation/CEVAL-055/1826573)) board for a VCO and had a question about the SMA connector on there. I tried googling around but could not really find a definitive answer.

All 3 connectors on the eval board seem to be female SMA. I expected the RF output to be SMA and know that it will connect to a male SMA for connection to other components in the downstream. However, I am not sure how to connect Vcc and Vt on the CEVAL-055 using a SMA connector. What I mean is, Vcc is the power supply voltage, let’s say coming from a battery. How do I connect the 0V and 12V wires to the female SMA connector? I am sure there must exist a connector for that. Can someone point me to it?

Similarly, for the Vt, the signal is going to be a low frequency signal. Something on the order of a few kHz. I am guessing the same connector can be used for that?

I appreciate any help that i can get here. Cheers!

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**Author:** ![David\_1768](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/david_1768/32/9762_2.png) [@David\_1768](https://forum.digikey.com/u/David_1768)\
**Post date:** [October 5, 2023, 1:33pm UTC](https://forum.digikey.com/t/question-about-sma-connector-on-ceval-055/35437/2 "2023-10-05T13:33:31Z")

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Hello khurram6050, welcome to the DigiKey TechForum.  
I’ve never used this item, but I found some cables that may help with the connections.  
[Click here for some SMA Male cables](https://www.digikey.com/short/nnm8c8r7).  
Maybe one of the engineer can add to this post, and give some feedback on using this board.

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**Author:** ![khurram6050](https://avatars.discourse-cdn.com/v4/letter/k/b5ac83/32.png) [@khurram6050](https://forum.digikey.com/u/khurram6050)\
**Post date:** [October 5, 2023, 1:36pm UTC](https://forum.digikey.com/t/question-about-sma-connector-on-ceval-055/35437/3 "2023-10-05T13:36:18Z")

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Thank you for your response David!

That’s exactly what I was looking for. I imagined that something like that must exist – just could not find it anywhere haha.

I guess I should not have limited my question to the particular eval board i mentioned. This question applies to any generic SMA connector.