Rane ME 15B 1995 version - Manual (Page 3)

Manual-3
REAR PANEL DESCRIPTION
1. 3-pin INPUT jacks: These accommodates balanced signals. Rane adheres to the international and U.S. standard for bal-
anced 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 jacks: These are TRS (tip-ring-sleeve) ¼" jacks accommodating either balanced or unbalanced signals. For
unbalanced signals use a mono ¼" plug (single conductor with shield). For balanced signals use microphone cable (two
conductor with shield) with TRS ¼" plugs. 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 jacks: These balanced outputs are wired per AES standards of pin 2 “hot”, as described above in (1).
4. ¼" TRS OUTPUT jacks: These are TRS (tip-ring-sleeve) ¼" balanced jacks 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.
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.