# File Sink and File Source

**URL:** <https://www.ruby-forum.com/t/file-sink-and-file-source/242498>\
**Category:** GNU Radio\
**Created:** [June 28, 2015, 1:15pm UTC](https://www.ruby-forum.com/t/file-sink-and-file-source/242498 "2015-06-28T13:15:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [June 28, 2015, 1:15pm UTC](https://www.ruby-forum.com/t/file-sink-and-file-source/242498/1 "2015-06-28T13:15:00Z")

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Hi guys!

I’ve been doing experiments on GRC. I was trying to connect the Complex  
Max^2 block and Probe Signal block, but I get an error message. I’m  
guessing maybe because the output of the Complex Mag^2 is 64-bit while  
the  
required input of the Probe Signal block is 32-bit. So I’ve decided to  
use  
the File Sink block. I also used the Source File block to get the data  
from  
the File Sink block. My question is, is this kind of flow graph fine? I  
mean can I use these two blocks in one GRC flow graph? Thanks in  
advance.

\*Gerome Jan M. Llames \*  
Graduate Student

“Design is not just what it looks like and feels like. Design is how it  
works.” - Steve Jobs