Buzzing noise from camera when running dew heaters
Posted: Wed Aug 31, 2022 5:06 pm
Hi,
I have my astro camera connected to one of the 12v output on my PPM. I have two dew heater bands connected to the dew control RCA outlets. When dew control is switched on in the Pegasus Astro software, it creates a buzzing noise coming from the camera. The sound intensity varies accordding to the power I set in Pegasus Astro software (in auto mode or set to certain values is when it is most audible).
I have read in another post that another user had a similar issue and it was caused by the dew heater itself. I'm not really keen on replacing my dew heaters since they are brand new. Is there some sort of modification that I could do on the PPM (soldering a capacitor on the board or something) to solve this? Adding ferrite chokes on the dew heater cable ends doesn't help.
I'm also wondering if changing the dew heater's cables and plugs to better ones (shielded cable, thicker gauge, gold plated plugs...) could fix that, but 'm skeptical and don't wish to modify them if it makes no difference.
Thank you.
I have my astro camera connected to one of the 12v output on my PPM. I have two dew heater bands connected to the dew control RCA outlets. When dew control is switched on in the Pegasus Astro software, it creates a buzzing noise coming from the camera. The sound intensity varies accordding to the power I set in Pegasus Astro software (in auto mode or set to certain values is when it is most audible).
I have read in another post that another user had a similar issue and it was caused by the dew heater itself. I'm not really keen on replacing my dew heaters since they are brand new. Is there some sort of modification that I could do on the PPM (soldering a capacitor on the board or something) to solve this? Adding ferrite chokes on the dew heater cable ends doesn't help.
I'm also wondering if changing the dew heater's cables and plugs to better ones (shielded cable, thicker gauge, gold plated plugs...) could fix that, but 'm skeptical and don't wish to modify them if it makes no difference.
Thank you.