Partyline : I have some hum and noise on my RM-702 panel, the hum is not system wide
Following a onsite visit, it was found that the customer was using a multi (composite) cable made up of audio, video cables and power cables.
It turned out that there was a 60 feet ‘snake’ multi (composite) cable as part of the install carrying 4 channels of PL & 4 coax feed to some monitors.Unplugging the monitors cured the problem –
The customer has agreed to re-route the audio cables to the RM-702 unit using a separate mic cable of 22 gauge.
The cause seemed to be crosstalk inthe snake cable from the video feeds affecting the DC, so channel A onthe PL became noisy.
Note: black-burst andhorizontal sync (transformer buzz) from the video, DMX-light control signals, light-dimmer control signals as well as power cables can wreak havoc on PL systems especially if using multi cablesClear-Com do recommend this method of installation and care should be taken when placing the PL cables in cable trays as well
It turned out that there was a 60 feet ‘snake’ multi (composite) cable as part of the install carrying 4 channels of PL & 4 coax feed to some monitors.Unplugging the monitors cured the problem –
The customer has agreed to re-route the audio cables to the RM-702 unit using a separate mic cable of 22 gauge.
The cause seemed to be crosstalk inthe snake cable from the video feeds affecting the DC, so channel A onthe PL became noisy.
Note: black-burst andhorizontal sync (transformer buzz) from the video, DMX-light control signals, light-dimmer control signals as well as power cables can wreak havoc on PL systems especially if using multi cablesClear-Com do recommend this method of installation and care should be taken when placing the PL cables in cable trays as well
CAN'T FIND YOUR ANSWER? CLICK HERE TO CONTACT SUPPORT
This solution was provided to you by Clear-Com via a question submitted to us by customers like you. If your question wasn’t answered, you need help or you have a recommended solution for our database, please send us an email at support@clearcom.com
The information on this page is owned by Clear-Com and constitutes Clear-Com’s confidential and proprietary information, may be used solely for purposes related to the furtherance of Clear-Com’ business and shall not be disclosed, distributed, copied or disseminated without Clear-Com’s prior written consent. Click Here for Clear-Com's privacy statement.