241
The Tektronix 241 is a programmer for the Tektronix 230. Three cables connect J201, J202, and J203 on the 241 to J201, J202, and J203 on the 230 for the purpose of remotely controlling the 230. Two cables connect J214 and J224 on the 241 to J214 and J224 on the 568 for the purpose of controlling programmable vertical and horizontal plug-ins.