17.1 APPENDIX A – BALANCED AUDIO CONNECTION AND PINOUT ................................................................... 57
17.2 APPENDIX B – SERIAL CONNECTION E PINOUT ........................................................................................... 57
17.3 APPENDIX C – USB A/B CONNECTION ........................................................................................................... 58
17.4 APPENDIX D – GPIO PORT .............................................................................................................................. 59
17.4.1 Connection to GPIn and GPOut via internal activation (Relay) ................................................................................. 59
17.4.2 Connection to GPIn and GPOut via external activation (TTL) ................................................................................... 60
17.4.3 Connection to GPIn and GPOut via external activation -2 (TTL) .............................................................................. 61
17.4.4 Operative Example ...................................................................................................................................................... 62
18 APPENDIX E –FIRMWARE UPDATE PROCEDURE .......................................................................................... 63
18.1 PREPARING THE DEVICE FOR UPGRADING ................................................................................................ 63
19 TECHNICAL SPECIFICATION MACROTEL X1 – MACROTEL X2 ..................................................................... 65
20 WEEE Directive – Informativa RAEE ................................................................................................................. 66
21 GUARANTEE........................................................................................................................................................ 67
22 DECLARATION OF ROHS CONFORMITY .......................................................................................................... 67
23 FINAL NOTES AND AXEL TECHNOLOGY CONTACT DETAILS ...................................................................... 68