The IAB1 and IAB2 are fairly simple boxes using an ohmmeter and proper ICOM documentation of the 8 and 13 pin DIN connectors available on this link;
you can easily do a continuity check from shield of any connector to Ground on the DIN connector, Also from TIP of any cable to the designated DIN pin for this function.
IMPORTANT NOTE: modifying or even opening the DIN plug CAN cause a short that CAN damage your radio, VE2DX Electronic is not responsible for any such damage.
Did you know we ONLY use FTDI USB Chipsets in our ICOM CI-V hub CT-17B product line for your Ham Radio Station, other well-known USB chipsets have been known to be cloned and full of bugs, that is why we ONLY use FTDI chipsets.
Did you know that you should NEVER use stereo cables on a CI-V network? The ICOM CI-V network infrastructure in your Ham Radio station is designed for Mono cables and 1/8 plugs.
Even dought ICOM radios will work with stereo cables (and our CT-17Bs also!) other non-ICOM products may short the signals to grounds causing you communication issues.
Ham Radio Manual for the ICOM ACC1 Breakout Box, 8pins DIN version.
Ham Radio Manual for the ICOM ACC1 Breakout Box, 13pins DIN version.
Ham Radio Manual for the ICOM CI-V hubs of the TX-17B series.
A very good Ham Radio reference on CI-V for all ICOM products.
Short Ham Radio document with all ICOM ACC1/2 connector references.
Official (outdated) last version of the ICOM CI-V Ham Radio reference manual.
The official GS232A/B Dual Azimuth Ham Radio reference manual.
The 2013 Ham Radio presentation by Richard VE2DX on rotor automation
ARRL`s Mark Spencer WA8SME was always a great Ham Radio reference for these type of projects.
One of the first try at Ham Radio rotor control protocols Easycomm was originaly a lot more aimed to be a full station control protocol.
EasyTrak, A P by Steven R. Bible Abstract IC Based Ham Radio Rotor/Radio Controller Interface Y N7HPR
DH1NDQ Easycomm Ham Radio reference.