How do I select appropriate LIFT/FLOAT/GND setting on ADDAC710 Balanced Outputs module? (ADDAC System Balanced Outputs User Guide)

Answer

manuals.plus

Feb 25, 2025 - 01:33 AM

The LIFT/FLOAT/GND toggle switch on the ADDAC710 Balanced Outputs module allows you to choose between three different settings: lift, ground, or floating ground. Each setting serves a different purpose in avoiding ground loops and interference.

1. LIFT (left position): In this position, the module circuit is "lifted" to the ground through a 100R resistor and a 10nF capacitor. This helps to break any ground loop connections and minimize interference. The LIFT setting is recommended when you suspect ground loop issues or when you want to isolate the input and output grounds.

2. FLOAT (middle position): When the switch is in the FLOAT position, the ground is not shared between the inputs and outputs. This provides complete isolation between the input and output signals, effectively eliminating any ground loop-induced hum. The FLOAT setting is ideal when you need maximum isolation between your modular system and the external sound system.

3. GND (right position): In the GND position, the ground is shared between the inputs and outputs. This setting does not provide isolation and may not be suitable if you are experiencing ground loop issues. However, in some cases, sharing the ground between the systems may be necessary for proper signal flow. You can try the GND setting if you do not encounter any interference or ground loop problems.

It is recommended to experiment with different settings to find the one that works best in your specific setup. If you are unsure, you can start with the LIFT or FLOAT setting and see if it resolves any interference issues. Refer to the manual for more information and consult with ADDAC System support if you have any further questions or concerns.