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BSS Audio
V 3.0
JMK
This equipment has been tested and found to comply with the following European and
international Standards for Electromagnetic Compatibility and Electrical Safety:
Radiated Emissions (EU):
RF Immunity (EU):
Mains Disturbance (EU):
Electrical Safety (EU):
Radiated Emissions (USA):
Electrical Safety (USA):
Electrical Safety (CAN):
IMPORTANT SAFETY INFORMATION
DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE, REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL. THIS EQUIPMENT MUST BE EARTHED.
IT SHOULD NOT BE NECESSARY TO REMOVE ANY PROTECTIVE EARTH OR SIGNAL
CABLE SHIELD CONNECTIONS TO PREVENT GROUND LOOPS. ANY SUCH
DISCONNECTIONS ARE OUTSIDE THE RECOMMENDED PRACTISE OF BSS AUDIO
AND WILL RENDER ANY EMC OR SAFETY CERTIFICATION VOID.
For continued compliance with international EMC legislation ensure that all input and
output cables are wired with the cable screen connected to Pin 1 of the XLR connectors.
The input XLR Pin 1 is connected to the chassis via a low value capacitor, providing high
immunity from ground loops whilst ensuring good EMC performance.
We have written this manual with the aim of helping installers and sound engineers to get
to grips with the FCS-930/960 and obtain its maximum capability. If you are new to BSS
products, we recommend that you begin at the start of the manual.
We welcome any comments or questions regarding the FCS-930/960 or other BSS
products, and you may contact us at the address or World Wide Web site given in
the warranty section.
th
14
October 1998
FCS-930/960
User Manual
EN55013
EN50082/1
EN61000/3/2
EN60065
FCC part 15 Class B
UL813/ETL
UL813/ETLc
FCS-930/960 User Manual v3.0
(1990) Associated Equipment
(1992) RF Immunity, Fast Transients
ESD
(1995)
(1993)
(1996) Commercial Audio Equipment
(1996) Commercial Audio Equipment
Page 1
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Table of Contents
Related Manuals for BSS Audio FCS-930
Summary of Contents for BSS Audio FCS-930
- Page 1 We have written this manual with the aim of helping installers and sound engineers to get to grips with the FCS-930/960 and obtain its maximum capability. If you are new to BSS products, we recommend that you begin at the start of the manual.
-
Page 2: Table Of Contents
BSS Audio FCS-930/960 User Manual v3.0 Contents 1 Mechanical Installation 2 Mains power connection 3 Introduction 4 Unpacking 5 Audio connections 5.1 Balanced wiring 5.2 Unbalanced wiring 5.3 Ground loop control 5.4 Powering up 6 Control descriptions 6.1 Front panel 6.2 Rear panel... -
Page 3: Mechanical Installation
FCS-930/960 User Manual v3.0 1 Mechanical Installation A vertical rack space of 2U (3.5", 88.9mm) for the FCS-930, and 3U (5.25", 133.35mm) for the FCS-960 is required. You must support the unit at its rear by additional bracing or shelving if it is to be used in a transportable system. Failure to do so will impair reliability and invalidate the warranty. -
Page 4: Introduction
30 filter bands spaced at the standard one third octave ISO frequency centres, spanning 25Hz at the low frequency end up to 20kHz at the high frequency end. The FCS-930 is a single channel unit, while the FCS-960 has two independent channels that may be used as a stereo pair. -
Page 5: Unpacking
.2 Unbalanced wiring If the equipment driving the FCS-930/960 has only unbalanced outputs then you will need to add a wire jumper such that the screen connection on Pin 1 of the XLR is shorted to either Pin 2 OR Pin 3, depending on the wiring convention of the unbalanced equipment. -
Page 6: Ground Loop Control
AC power connector as an interim measure to achieve similar results. .4 Powering up When the FCS-930/960 is switched on by operating the power on-off switch located on the rear panel, the front panel LED showing the normal MODE will be illuminated. -
Page 7: Control Descriptions
GAIN control [2] and will operate should any one of them exceed the danger level. Should this occur, then the signal level entering the FCS-930/960 will need to be reduced in level. If you are using large amounts of extra gain from the GAIN control then this can be backed off, but any previous balance achieved will then be lost. -
Page 8: Using The Fcs-930/960
Pin 2 or Pin 3 may be the HOT terminal. 7 Using the FCS-930/960 The FCS-930/960 Graphic equaliser is the result of a detailed study of sound engineers and contractors requirements plus many hours of voice and music program listening tests to carefully optimise the benefits of controlling equalisation in this ergonomically efficient and familiar manner. -
Page 9: Normal Mode
BSS Audio FCS-930/960 User Manual v3.0 .1 Normal Mode Here the Q value of the filter is set to allow groups of faders to be set in a pattern which represents fairly closely the actual amplitude response obtained. The combining effect is smooth whilst still retaining a degree of selectivity normally associated with a graphic equaliser. -
Page 10: Filter Shape And Interactive Effects
Q value will vary as the amount of boost or cut is varied, further adding to the complication. On the FCS-930/960 we have carefully optimised the design to account for these effects. Adding the dual mode feature allows us to re configure the filter shapes to accommodate the different applications. -
Page 11: Service Section
9 Service section .1 Chassis/0V removal The FCS-930/960 has the signal 0v ground connected to the metal chassis, which in turn is connected to the safety ground. In the unlikely event that you need to remove this link, or if you need to add a small impedance to reduce earth loop currents, then proceed as follows. -
Page 12: Transient Suppressor Replacement
.2 Transient suppressor replacement The primary of the mains transformer within the FCS-930/960 is protected against high voltage spike interference by two voltage dependent resistors. These provide a short circuit to voltage peaks in excess of their maximum rating. -
Page 13: Warranty Information
FCS-930/960 User Manual v3.0 10 Warranty Information When sold to an end user by BSS Audio or a BSS Audio Authorised Reseller, this unit is warranted by the seller to the purchaser against defects in workmanship and the materials used in its manufacture for a period of one year from the date of sale. -
Page 14: Specifications
BSS Audio FCS-930/960 User Manual v3.0 11 Specifications Input Section electronically balanced, +20dBu maximum input level via XLR3-31 or equivalent. Output Section Electronically balanced and floating, capable of driving +20dBu into 600 or greater via XLR3-32 or equivalent. System Performance Frequency response ±0.25dB from 20Hz to 20kHz... -
Page 15: Dimensions/Weight
Security cover Metal cover, secured by rack screws. A steel security cover is available for the FCS-930/960 which is secured by two out of the four rack mounting screws. It is retrofittable and does not require any modification to the unit. Please contact us for availability.
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