- 6 -
Section 4 - Installation
4.1 Unpacking
BEFORE UNPACKING, INSPECT THE SHIPPING CONTAINER FOR ANY EXTERNAL EVIDENCE OF
SHIPPING DAMAGE. Document any external damage in writing, and/or photograph it before opening the
carton. If the damage is extensive, notify the carrier before opening.
SAVE THE CARTONS AND ALL PACKING MATERIAL UNTIL THE EQUIPMENT IS COMPLETELY
INSTALLED AND OPERATING SATISFACTORILY. If hidden shipping damage is found upon opening the
cartons, notify the carrier and LPB Communication at once. The carrier will want to inspect the shipping
carton and packing materials. Federal regulations require freight claims to be filed by the recipient of the
shipment. Failure to file a claim with the shipper in a timely manner may result in a claim denial.
4.2 Inspection
If you ordered any optional items, such as the B series of cables, make sure they are present. Contact the LPB
Customer Service Department if any discrepancies are found. This is a good time to complete and return
your Warranty Registration Form.
4.3 Grounding Information
Proper grounding is the most critical part of any console installation. In addition to being electrically
hazardous, improper grounding can severely degrade the operation of the console and the entire studio. DO
NOT PROCEED WITH INSTALLATION UNTIL YOU HAVE A GROUNDING PLAN THAT
SATISFIES THE REQUIREMENTS OF YOUR LOCAL ELECTRICAL CODES AND ACCEPTABLE
AUDIO PRACTICES. If you are not experienced in designing grounding systems for audio studios, consult
with an experienced professional.
The goal of any audio grounding system is to provide proper grounding for all equipment while avoiding
ground loops. A ground loop is present any time a piece of equipment has two or more paths to ground (See
Figure 4.1). For example, if a tape machine is connected to ground through the grounding prong of the AC
line cord and by the shield connections of its audio lines, a ground loop exists.
Shield
Audio Line
Ground Loop
AC Power
Device A Device B
AC Power
Figure 4.1
Ground loops often cause noise in the system, usually in the form of 60 or 120 Hz hum or buzz, and may
induce RF interference. To eliminate a ground loop, all paths to ground must be severed, except one
(preferably the AC safety ground). NOTE: AUDIO SHIELDS DO NOT PROVIDE AN ACCEPTABLE
AC SAFETY GROUND. Clipping off the grounding prong on the AC plug, or using a 2-prong plug adapter,
and grounding the machine by way of its audio shields only, is extremely unsafe, with potentially lethal
consequences.
To Next Page
Loading...