Rane ME 30B 1995 version - Manual (Page 3)

Manual-3
REAR PANEL DESCRIPTION
IMPORTANT NOTE
CHASSIS GROUNDING
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. If your equipment is in a rack, verify that all
chassis are tied to a good earth ground, either through the
line cord grounding pin or the rack screws to another
grounded chassis.
3. Units with outboard power supplies do 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.
1. 3-pin INPUT jack: This accommodates balanced signals. Rane adheres to the international and U.S. standard for balanced
pin configurations: Pin 1 is chassis ground (neutral), pin 2 is hot (positive), and pin 3 is signal return (negative). Choose
between this and the ¼" TRS Input jack—use only one—they do not sum.
2. ¼" TRS INPUT jack: This is a TRS (tip-ring-sleeve) ¼" jack accommodating either balanced or unbalanced signals. For an
unbalanced signal use a mono ¼" plug (single conductor with shield). For a balanced signal use microphone cable (two
conductor with shield) with a TRS ¼" plug. Choose between this and the ¼" TRS Input jack—use only one—they do not
sum. Refer to the included RaneNote, “Sound System Interconnection” for unbalanced wiring.
3. 3-pin OUTPUT jack: This balanced output is wired per AES standards of pin 2 “hot”, as described above in (1).
4. ¼" TRS OUTPUT jack: This is a TRS (tip-ring-sleeve) ¼" balanced jack compatible with either balanced or unbalanced
systems. For balanced systems, use a microphone cable wired with pin 1 is chassis ground (neutral), pin 2 is hot (positive),
and pin 3 is signal return (negative). Refer to the RaneNote, “Sound System Interconnection” for unbalanced wiring.