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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