Rane FDA 28 - Manual (Page 3)

REAR PANEL DESCRIPTION
The FDA 28 uses Euroblocks that disconnect and accommodate any wire size
from 26AWG to 12AWG.
1. INPUT TERMINALS. Use these for either Microphone or Line level INPUTs to be
distributed by the FDA 28. Connect balanced sources to the respective “+”and “–”
terminals, and choose a shield grounding terminal (either signal ground (SIG GND)
or chassis ground). Unbalanced Inputs should connect to “+” and SIG GND only.
When using an unbalanced Input you may leave “–” open, or short it to GND.
2. MIC / LINE SELECTOR SWITCH. In the out position, the respective Input stage
is set for Microphone Input levels. In the depressed position, Line level signals are
accepted.
3. PHANTOM POWER SWITCH. In the on position, 15VDC PHANTOM POWER
appears present on each INPUT, and the LED lights.
4. OUTPUT TERMINALS. Balanced OUTPUT for each Channel. Connect two
conductor shielded cable to “+”and “–” terminals. Tie the shield to chassis, signal
ground, or leave open—your choice. For unbalanced use, you must tie the “–” to
SIG GND. Failure to do so results in improper operation.
5. GROUND LIFT SWITCH. This switch provides the ability to separate chassis
ground and signal ground. Normally, this switch should be in the LIFT position. In
some circumstances it may be necessary to move it to the opposite position to
eliminate stubborn hum and buzz problems. See the CHASSIS GROUNDING note
on the last page for details.
If you are tempted to try moving this switch with your power amplifiers turned on or
turned up, don't be. Always turn your amplifier levels down before changing your
grounds around and then bring them up slowly.
6. POWER INPUT CONNECTOR. USE ONLY A MODEL RS 1, FRS 8, RAP 10,
VC 18 OR OTHER REMOTE AC POWER SUPPLY APPROVED BY RANE. The
FDA 28 is supplied with a remote power supply suitable for connection to this input
jack. Consult the factory for replacement or substitution.
7. CHASSIS GROUND POINT. A 6-32 screw is used for chassis grounding purposes.
See the CHASSIS GROUNDING note on the last page for details.
INTERNAL ASSIGN SWITCHES SHIPPED IN “POST” POSITIONS.