[amsat-bb] Fox Delta ST2 with G5500DC? [SOLVED]

[Ben Cook]

Yaesu may very well have changed the pinouts between the versions. 
Another slightly annoying thing is that there’s no mention of what the 
voltage adjust does (if anything!) in the manual. I tried taking some 
measurements to see if adjusting it made any changes to things during 
this whole process and it doesn’t appear that it’s used at all. No 
difference in DC voltage supplied to rotors on controller pins 4 & 5 and 
no difference in voltage supplied to the DIN pinouts.

On 6 Oct 2020, at 9:32, Burns Fisher wrote:

> Thanks, Ben.  Good info!  So you think Yaesu changed the pinout 
> between the
> AC and the DC versions?  Annoying!
>
>  I know that a number of people have used the ST2 without issues.  And 
> that
> is pretty much a clone of the LVB Tracker, which I use with no 
> problem.
>
> On Tue, Oct 6, 2020 at 9:55 AM Ben Cook via AMSAT-BB 
> <amsat-bb at amsat.org>
> wrote:
>
>> I figured out the issue that I was having between the Yaesu G5500DC
>> controller unit and the Fox Delta ST2 and wanted to pass along this
>> information for the next person that might need it. The wiring pin 
>> out
>> for the 8-pin male DIN diagram in the manual is wrong. The table 
>> below
>> is what finally worked for me:
>>
>> `pin` | function
>> --- | ---
>> `1` | Rotate up
>> `2` | Rotate right/CW
>> `3` | Provides 2 to 4.5V DC corresponds to 0˚ to 450˚
>> `4` | Rotate down
>> `5` | Rotate left/CCW
>> `6` | Provides 8 to 14V DC up to 100mA
>> `7` | Provides 2 to 4.5V DC corresponds to 0˚ to 180˚
>> `8` | Common ground
>>
>> Also the voltage I observed across the common ground and pin 6 on my
>> unit was just shy of 16V, well above the stated value in the Yaesu
>> manual.
>>
>> After getting all the wiring corrected, I was able to perform an 
>> EEPROM
>> calibration correctly and everything lines up and works now. Hope 
>> this
>> saves the next ham some time trying to figure this out.
>>
>> 73, Ben - N6ELF
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