def read_info_string(self):
infostring = []<EOL>self.cnxn.xfer([<NUM_LIT>])<EOL>sleep(<NUM_LIT>)<EOL>for i in range(<NUM_LIT>):<EOL><INDENT>resp = self.cnxn.xfer([<NUM_LIT>])[<NUM_LIT:0>]<EOL>infostring.append(chr(resp))<EOL><DEDENT>sleep(<NUM_LIT:0.1>)<EOL>return '<STR_LIT>'.join(infostring)<EOL>
Reads the information string for the OPC

        :rtype: string

        :Example:

        >>> alpha.read_info_string()
        'OPC-N2 FirmwareVer=OPC-018.2....................BD'