Hi all,
I have successfully completed a project to have a bell ring (via relay) when my 996p2 activated in fire tone-out mode via using the AC voltage that exists in a 3.5mm stereo wire coming out of the headphone jack.
Because I didn't want to dedicate my 996P2 to this, I picked up a BCT15. Somehow though, something is different. If I remove the 996P2 and replace with the BCT15, the system fails to work. I did a little reading and testing and below is what I've found:
BCD996P2: headphone jack is stereo, putting out 6mW at 32ohm
BCd996P2: no voltage in stereo wire unless radio is making sound, 4-5V AC when radio is active.
BCT15: headphone jack is stereo, putting out (?) mW at 32ohm
BCT15: meter reads about 8v AC at startup and then it slowly bleeds to zero. Once at zero, I get no voltage even when radio is active and sound signal is flowing through the cable (verified with a speaker).
The BCT15 manual is confusing because I read the following:
Page 32: "Use an optional mono earphone or mono headset with proper impedance(32 Ω
for private listening"
Page 141: "Phone jack: 3.5mm Stereo type"
I didn't my own test with a pair of stereo headphones and get audio on both sides. I'm assuming this means it is a stereo jack.
If that is the case, I can't figure out why I'd get a different result. Any thoughts/tips?
I have to use the headphone jack because for various reasons the REc and ext speaker will not work for this project.
Thanks folks!
I have successfully completed a project to have a bell ring (via relay) when my 996p2 activated in fire tone-out mode via using the AC voltage that exists in a 3.5mm stereo wire coming out of the headphone jack.
Because I didn't want to dedicate my 996P2 to this, I picked up a BCT15. Somehow though, something is different. If I remove the 996P2 and replace with the BCT15, the system fails to work. I did a little reading and testing and below is what I've found:
BCD996P2: headphone jack is stereo, putting out 6mW at 32ohm
BCd996P2: no voltage in stereo wire unless radio is making sound, 4-5V AC when radio is active.
BCT15: headphone jack is stereo, putting out (?) mW at 32ohm
BCT15: meter reads about 8v AC at startup and then it slowly bleeds to zero. Once at zero, I get no voltage even when radio is active and sound signal is flowing through the cable (verified with a speaker).
The BCT15 manual is confusing because I read the following:
Page 32: "Use an optional mono earphone or mono headset with proper impedance(32 Ω
Page 141: "Phone jack: 3.5mm Stereo type"
I didn't my own test with a pair of stereo headphones and get audio on both sides. I'm assuming this means it is a stereo jack.
If that is the case, I can't figure out why I'd get a different result. Any thoughts/tips?
I have to use the headphone jack because for various reasons the REc and ext speaker will not work for this project.
Thanks folks!