[Yaesu] DVS-2 connector questions...

[Joe Subich, W4TV]

> DESCRIPTION OF FUNCTION OF DVS PORT			
> 
> PTT  DVS0 DVS1 Function
> "1"  "0"  "0"  Receiver Audio at Voice Out, Voice In muted
> "0"  "0"  "0"  Voice Out and In both muted
> "1"  "0"  "1"  Transmitter Mic. audio at Voice Out, Voice In muted
> "0"  "0"  "1"  Transmitter Mic. audio at Voice Out, Voice In muted
> "1"  "1"  "0"  Voice Out muted, Voice In signal at Receiver Audio output
> "0"  "1"  "0"  Voice Out and In both muted
> "1"  "1"  "1"  Voice Out and In both muted
> "0"  "1"  "1"  Voice Out muted, Voice In signal at Receiver Audio output 
>                and Transmitter Audio
> 
> "0" means pin at ground, "1" means pin at Vdd 
> 
> The Yaesu DVS port 
> Pin# Name      Description
> 1    VOICE IN  Input from Sound Blaster Speaker output
> 2    VOICE OUT Output to Sound Blaster Mic input
> 3    PTT       Push To Talk control line
> 4    Vdd       Power Supply, +12V for FT-990 or +9V for all others.
> 5    DVS0      DVS control line
> 6    DVS1      DVS control line
> 7    GND       Ground
> 

73,

    ... Joe, W4TV


On 2018-10-14 8:39 PM, bill K7WXW wrote:
> I would like to use digital modes with my FT1000D. I know I can make a 
> cable and use the mic input but that's inelegant and a pain, besides. I 
> guess I could also build a cable that uses the phone patch, AF out, PTT 
> connections but that seems a kludge.  Packet only does FM and LSB, and I 
> haven't figured out a way around that, so the packet connector is out.
> 
> But there's the DVS-2 "Voice" input. Since it has audio in, audio out, 
> and PTT, and the audio chain looks okay for AFSK, I am trying to figure 
> out what the two control lines do. I can't quite figure it out by 
> looking at the FT1000D schematics, so I currently have three questions:
> 
> - Does anyone have a schematic for the DVS-2?
> - Does anyone know what the control lines do and their electrical 
> characteristics?
> - Has anyone used the DVS-2 interface for anything other than a DVS-2?
> 
> Thanks in advance for any help or guidance offered.
> 
> 73 de bill K7WXW
> 
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