FCS 966
User Manual
1
V 1.0 |
BV/JMK |
30 April 1998 |
An example of 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): |
EN55013 |
(1990) Associated Equipment |
RF Immunity (EU): |
EN50082/1 |
(1992) RF Immunity, Fast Transients ESD |
Mains Disturbance (EU): |
EN61000/3/2 |
(1995) |
Electrical Safety (EU): |
EN60065 |
(1993) |
Radiated Emissions (USA):FCC part 15 Class B
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 and/or the jack plug sleeve. The input XLR Pin 1, input jack socket sleeve and Combi-Con screen connectors are connected to the chassis via a low value capacitor, providing high immunity from ground loops whilst ensuring good EMC performance.
Please read
We have written this manual with the aim of helping installers, sound engineers and musicians alike to get the most out of the FCS 966. We recommend that you read this manual, particularly the section on installation, before attempting to operate the unit.
We recommend that you read this manual, particularly the section on installation, before attempting to operate the unit as there are a number of features that may not be apparent by casual use. The manual is split into two main sections. The first contains quick reference information, regarding the functions and operation of the unit, while the second covers a more general background to the uses and application of the FCS 966.
We welcome any comments or questions regarding the FCS 966 or other BSS products, and you may contact us at the address or World Wide Web site given in the warranty section.
2
Contents
Contents
1.0 |
Mechanical installation |
5 |
2.0 |
Unpacking |
6 |
3.0 |
Mains Power Connection |
6 |
3.1 |
Mains Power |
6 |
4.0 |
Introduction |
7 |
5.0 |
Audio Connections |
10 |
5.1 |
XLR Inputs |
10 |
5.2 |
XLR Outputs |
10 |
5.3 |
Jack Inputs |
11 |
5.4 |
Jack Outputs |
12 |
5.5 |
Combi-Con connectors |
12 |
6.0 |
Control operations |
14 |
6.1 |
Eq In |
14 |
6.2 |
Gain |
14 |
6.3 |
HP Filter |
15 |
6.4 |
LF Contour |
15 |
6.5 |
HF Contour |
16 |
6.6 |
Output meter |
16 |
6.7 |
Clip indicators |
17 |
6.8 |
Frequency band sliders |
17 |
7.0 |
General guide to equalisers |
18 |
7.1 |
What is a graphic? |
18 |
7.2 |
How do I use it? |
18 |
7.3 |
What does constant Q mean? |
19 |
3
Contents
8.0 |
Application examples |
21 |
8.1General Equalisation -
|
problem solving |
21 |
8.2 |
Feedback reduction |
22 |
8.3 |
Room equalisation |
22 |
8.4 |
Uses for the HP Filter |
23 |
8.5 |
Uses for the LF contour |
24 |
8.6 |
Use for the HF contour |
24 |
9.0 |
Warranty Information |
25 |
10.0 |
Specifications |
26 |
|
Index |
27 |
|
User Notes |
28 |
Spare Parts Information |
31 |
4
Mechanical Installation
1.0Mechanical installation
A vertical rack space of 3U (5 1/4" - 133.5mm high) is required, with a depth of 190mm, excluding connectors. Ventilation gaps are unnecessary.
If the unit is likely to undergo extreme vibration through extensive road trucking and touring, the unit must be supported at the rear and/or sides to lessen the stress on the front mounting flange. The necessary support can generally be bought ready-built, as a rack tray, or the FCS 966 can be mounted between other units. Damage caused by insufficient support is not covered by the warranty. To prevent cosmetic damage to the front panel paint finish, always use protective plastic cups under the rack mounting bolts.
As with any low-level signal processing electronics, it is best to avoid mounting the FCS 966 next to a strong source of magnetic radiation or heat, for example, a high power amplifier.
Fig 1.1 Unit dimensions.
Fig 1.2 Rack
dimensions.
5
Unpacking
Mains Power Connection
2.0Unpacking
As part of the BSS system of quality control, we check every product carefully before packing to ensure that it reaches you in flawless condition.
Before you go any further, please check the unit for any physical damage and retain the shipping carton and all relevant packing materials for use, should the unit need returning.
In the event that damage has occurred, please notify your dealer immediately, so that a written claim to cover the damages can be initiated. Check out section 9.0; warranty information, for more info on the warranty, and also to record your dealer details.
3.0Mains Power Connection
3.1Mains Power WARNING! THIS APPLIANCE MUST BE EARTHED.
The FCS 966 must always be connected to a 3-wire earthed AC outlet. The rack framework must also be connected to the same grounding circuit. The unit must NOT be operated unless the power cables' EARTH (ground) wire is properly terminated - this is important for personal safety as well as for proper control over the system grounding.
The wires in the mains lead are colour coded in accordance with the following code.
Green and Yellow......Earth
Blue......Neutral
Brown......Live
Those units supplied to the North American market will have an integral moulded 3 pin connector which is provided to satisfy required local standards.
IMPORTANT: The FCS 966 is designed to use 50/60Hz AC power in one of two voltage ranges, selectable with the mains voltage selector switch on the rear of the unit. It is vital that the position of this switch is checked BEFORE initial power up to ensure that it matches the local mains supply. Acceptable input AC supply voltages range from:
115V switch position |
90V to 132V |
230V switch position |
190V to 265V |
The application of voltages outside these ranges may cause permanent damage or erratic operation of the unit, and will invalidate the warranty.
The mains fuse carrier on the rear of the unit must be fitted with the correct type and rating of fuse, depending on the position of the mains voltage selector switch:
115V switch position |
T315mA fuse |
230V switch position |
T200mA fuse |
In the unlikely event of the mains fuse failing without good reason,
DISCONNECT THE UNIT FROM THE MAINS SUPPLY, and always replace
6
Introduction
with the appropriately rated fuse (as specified previously) for continued protection against damage and fire.
Note: For USA and Canadian users, the replacement fuse must be of an identical UL rated type fuse for continued compliance with safety standards.
4.0 |
Introduction |
|
The FCS 966 is a two channel graphic equaliser that provides a generous +/ |
-15dB of control range on each of 30 constant Q frequency bands. For optimum performance, each filter band is arranged to be out of circuit if it's sliders are left in the centre of its travel, and thus does not contribute unnecessary noise or distortion.
In addition, a sweepable high pass filter, variable gain, and HF/LF contour controls are provided for extra flexibility. Indication of level is provided by an 8 segment meter that reads input level when the unit is bypassed, and output level when active. This allows accurate level matching of the equalised to unequalised signal. Indication of overload is provided by a separate clip indicator that simultaneously monitors the level at three critical internal points to ensure that any overload does not go unnoticed.
When bypassed, the FCS 966 connects the output directly to the input with a high quality relay, ensuring that a signal passes even with a loss of AC power. The relay drive also incorporates a power on delay and AC power loss detector, ensuring that there is no possibility of on/off thumps being generated by the unit.
For installation flexibility, XLR, Jacks and pluggable terminal block (combi-con) connectors are provided as standard, with transformer isolation on both the inputs and outputs available as an option. The mains lead is a standard detachable IEC type.
7
The FCS 966
Fig 4.1 Front Panel
Fig 4.2 Rear Panel
8
All numbers in bubbles refer to Section numbers.
9
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