Williams Sound PPA R37 User's Guide download pdf (Page 26)

BUZZ IN OTHER EQUIPMENT WHEN TRANSMITTER IS ON OR OFF

þ This is not an RF problem. Instead, it is likely caused by incorrect audio connections, a ground loop, or

defective equipment. To remedy, use proper audio wiring practice to make connections described on page 8.

BUZZ OR OTHER NOISE IN EQUIPMENT ONLY WHEN TRANSMITTER IS ON

þ This is likely an RF–induced disturbance in the other equipment. To remedy, try these steps in

order until the buzz is eliminated:

1. Make certain the transmitter chassis is connected to the equipment cabinet rails.

Buzz/hum in system may be experienced when the T35 chassis is insufficiently grounded. In this

case, install a ground wire to the T35 chassis and terminate to a known good ground source.

2. Make sure antenna connections are secure.

3. Set the T35 Transmitter to MEDIUM power output on the RF Power menu choice.

4 Install transmitter at a distance from sensitive equipment.

5. Use a remote antenna (ANT 005 or ANT 024).

6. Make sensitive equipment more immune to RFI/EMI. The manufacturers of your audio equipment

may offer application notes for this purpose. Williams Sound offers a document giving suggestions

for improving RF immunity in existing audio equipment (

Technical Bulletin: Buzz Or Hum In The

Sound System, FRM 531).

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Williams Sound PPA R37 User's Guide Page 26