Rane CP 62 - Manual (Page 8)

Manual-8
All features & specifications subject to change without notice. SEP96 Printed in the U.S.A. on Recycled Paper
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CHASSIS GROUNDING
The CP 62 is supplied with a rear mounted ground-lift switch. The unit is shipped with this switch in the “grounded”
position, tying circuit ground to chassis ground. If after hooking up your system it exhibits excessive hum or buzzing, there
is an incompatibility in the grounding configuration between units somewhere. Your mission, should you accept it, is to
discover how your particular system wants to be grounded. Here are some things to try:
1. Try combinations of lifting grounds on units that are supplied with ground lift switches or links.
2. Verify that all chassis are tied to a good earth ground, (i.e., through the line cord grounding pin or grounded amplifier
chassis.) Do not depend on the painted rack screws and rails to ground the chassis.
3. The CP 62 does not ground the chassis through the line cord. Make sure that these units are grounded either to another
chassis which is earth grounded, or directly to the grounding screw on an AC outlet cover by means of a wire connected to a
screw on the chassis with a star washer to guarantee proper contact.
Please refer to RaneNote 110, “Sound System Interconnection” included in this manual for further information.
IMPORTANT NOTE
Figure 3b. Stereo and Mono Zone Control Example
Figure 3a. Three Mono Zones Control Example