diff --git a/ch.psi.fda.cdump/Readme.md b/ch.psi.fda.cdump/Readme.md
index 5772ca8..0dec0ea 100644
--- a/ch.psi.fda.cdump/Readme.md
+++ b/ch.psi.fda.cdump/Readme.md
@@ -1,6 +1,18 @@
 # Overview
 Cdump enables users to record data via an ADC in a continuous way. Cdump requires a special IOC based configuration.
 
+The basic setup and function of cdump is as follows:
+
+```
+IOC
+[waveform (adcData)] < data
+[sampling rate (smplRate)] < set/control sampling rate of the controller 
+[command (adcCmd)] < start stop acquisition process
+```
+
+There are 3 channels on the IOC. One for the data, and 2 for controlling the acquisition. 
+
+
 # Usage
 To start the cdump client use the provided `bin/cdump` executable.