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BSS Audio TCS-80X User Manual version v4.0

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V 4.0 JMK 3

December 1997

TCS-80X

User Manual

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)

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.

We have written this manual with the aim of helping installers, sound engineers

and consultants alike get to grips with the TCS-80X series and obtain its maximum

capability.

If you are new to BSS equipment, we recommend that you begin at the start of the

manual. If, however, you are already familiar with the intended application, and

just want to get the unit installed without delay, then follow the highlighted

sections. Since this manual is dual purpose in covering both the TCS-803 and the

TCS-804 units, information that applies to only one of the units will be clearly

noted for you. Where a particular function applies to both units, the method of

access and operation is identical for both units and the manual will show pictures

of the TCS-804 as an example.

Should you have any comments or questions about applying the TCS-80X series

within your application, please write to us, or e-mail us, at the addresses in the

warranty section. We welcome any comments or questions regarding the TCS-80X

series or other BSS products, and you may contact us at the address or World Wide

Web site given in the warranty section.

Summary of content (29 pages)

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BSS Audio V 4.0 TCS-80X User Manual version v4.
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BSS Audio TCS-80X User Manual version v4.0 Contents 1 The TCS-80X Series. 4 2 What is special about BSS Delays? 4 3 Earthing Requirements 5 4 Unpacking 5 5 Mechanical Installation 6 6 Mains Power Connection 6 7 Input Connections 7 7.1 XLR Plugs 8 Output Connections 8.1 XLR Plugs 9 Control Connections 9.1 Remote Program Selection 10 Powering Up 10.1 Default Settings and Display 10.2 Error message display 10.3 Mode setting (TCS-804 only) 11 Parameter Selection 11.1 Bypass 11.
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BSS Audio TCS-80X User Manual version v4.0 14 Applications 14.1 Time correction for audience distances 14.2 Time correction for speaker driver placement 21 21 21 15 Midi Implementation 23 16 BSS Temperature probe 24 17 Service section 25 17.1 Chassis/0V Link removal 17.2 Transient suppressor replacement 17.3 Extended memory 17.
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BSS Audio TCS-80X User Manual version v4.0 1 The TCS-80X Series. The TCS-803 and TCS-804 form a series of multitap time correction units that offer you the very best from todays' affordable digital technology. Utilising advanced BSS proprietary conversion techniques they have exceptional headroom, phase linearity and low level resolution that will not weaken a conventional high quality analogue signal processing chain.
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BSS Audio TCS-80X User Manual version v4.0 criteria. Every completed unit is tested both by measurement and in a listening test carried out by trained audio professionals. To positively ensure reliability, all units are burnt-in for fifty hours, before being tested. 3 Earthing Requirements WARNING! THIS APPLIANCE MUST BE EARTHED. IMPORTANT: The wires in the mains lead are colour coded in accordance with the following code. Green and Yellow......Earth Blue......Neutral Brown......
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BSS Audio TCS-80X User Manual version v4.0 After unpacking the unit, please inspect 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. See section 18; Warranty Information. 5 Mechanical Installation A vertical rack space of 1U (1¾" / 10½mm) deep is required.
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BSS Audio TCS-80X User Manual version v4.0 250mA for 120V and 150mA for 240V). If the fuse blows without good reason, refer to section 17.1;. Always replace with an identical 20mm x 5mm T rated fuse for continued protection from equipment damage and fire. It is unlikely that a fuse will fail during normal use, and must be treated with some caution to the cause, if it should do so. One of the most likely reasons for failure is the incorrect setting of the voltage switch on the rear of the unit.
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BSS Audio TCS-80X User Manual version v4.0 Strict adherence to the wiring conventions noted above within a fully balanced signal system will yield the best possible results with none of the problems normally associated with interconnected audio equipment. Wherever possible, cable screens should not be connected to any signal pin, but rather left to perform a cable shielding function only. Please refer to section 17.1; Chassis/0V Link removal for information on this procedure.
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BSS Audio TCS-80X User Manual version v4.0 9 Control Connections Both the TCS-803 and TCS-804 have two external control ports, one being the Remote Program Selection, the other a standard MIDI control interface having both IN, THRU and OUT connectors. More about the MIDI option and its control codes are detailed in section 15; Midi Implementation.
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BSS Audio TCS-80X User Manual version v4.0 10 Powering Up When the TCS-80X is switched on, by operating the power on-off switch located on the rear panel, the internal circuitry carries out a series of routine diagnostic tests. The display will show a series of numbers which will advise: • The TCS model number, plus a suffix ‘E’ if the internal memory has been extended. • The software version number currently fitted. • Which interface option is fitted (TCS-804 only).
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BSS Audio TCS-80X User Manual version v4.0 10.2 Error message display Should the unit detect bad data internally, on a control interface, or an incompatible mode setting, an error message number will be displayed to show there is a problem. Any other indicated errors will require the unit to be referred to an authorised service centre for repair. Err.3 Midi timing error Err.4 Option interface timing error Err.5 Incorrect mode selected for master-slave linking or program recall Err.
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BSS Audio TCS-80X User Manual version v4.0 11 Parameter Selection This section deals with selection of the various modes of operation as well as the adjustment of delay times and signal path gain structure. Where a feature is common to both the TCS-803 and TCS-804, the selection and adjustment is identical. Where there is a difference, it will be described separately.
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BSS Audio TCS-80X User Manual version v4.0 point, and on the other that it is not wasteful of dynamic range. It is always adjusted first on initial setting up. The output level trims will be useful for providing some degree of individual adjustment for each of the three outputs. They can be adjusted following the correct setting of input headroom.
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BSS Audio TCS-80X User Manual version v4.0 One of the many advantages of this digital level control is seen when adjusting input headroom. The input to output through gain will always be held constant at the dB value previously set because internal circuitry automatically provides the necessary correction to output level.
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BSS Audio TCS-80X User Manual version v4.0 Sets parameters to those of displayed program number. Stores current parameters into displayed program number and will overwrite any previous settings. Once either Recall or Store has been pressed, the display returns to the delay display that was shown before the Program mode was selected. Press at any time to exit Program mode. Press at any time to exit Program mode.
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BSS Audio TCS-80X User Manual version v4.0 Press again to display temperature and again to display master/slave transmit mode. Press and hold to exit UTILITY. Temperature Both the TCS-803 and TCS-804 allow compensation for the change in delay times needed to maintain a fixed distance as the ambient temperature varies. In addition, the TCS-804 has as an optional external temperature probe which then makes this correction automatic.
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BSS Audio TCS-80X User Manual version v4.0 12 Master/Slave Operation By using the MIDI control interface it is possible to interconnect a number of TCS803 and TCS-804 units so that one unit takes on a MASTER function while other selected ones assume a SLAVE function. In addition there are three different modes of operation to choose from determining what data is to be transferred. Select this from within the UTILITY menu at the same time as setting MIDI channel number. Refer to section 10; Powering Up.
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BSS Audio TCS-80X User Manual version v4.0 12.3 Transmit mode ‘tr.SL’. Transmit Slave This is a full Master/Slave linking mode where all delay settings, in/out status, and temperature data is transmitted by the Master unit for duplication on each slave unit. Program recall and level information is not transmitted and remains locally adjustable.
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BSS Audio TCS-80X User Manual version v4.0 Note that LINKING only applies to delay time. The individual through gain for each output remains independent and is adjustable by the LEVEL mode as described earlier. 13.2 Relative Delay, Mono mode Relative delay is a display and adjustment mode that allows the assigning of either of the four outputs as a reference such that all other outputs will be linked to it, and dragged when the reference is moved.
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BSS Audio TCS-80X User Manual version v4.0 This unique facility is invaluable when using the TCS-804, and in the dual channel mode there are two possible applications for relative linking depending on whether the system is stereo, or a split band loudspeaker system correcting for array displacement or loudspeaker driver offset.
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BSS Audio TCS-80X User Manual version v4.0 14 Applications 14.1 Time correction for audience distances In any large public auditorium it is necessary to arrange the loudspeaker system in clusters which are distributed around the arena to help obtain a more uniform distribution of sound level. For any given position within the arena a listener will be hearing a combination of both the direct sound from the stage, and that from the nearest distributed cluster.
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BSS Audio TCS-80X User Manual version v4.0 wasteful of facilities and not economic for a typical three or four way stereo system. A very powerful method utilising delays with a multiple loudspeaker system is to integrate the delay into the crossover such that one multitap delay will provide all the facilities for one channel of a sound system. The BSS FDS-360 Electronic Crossover has built into it a special interface which will allow interconnect of either the TCS-803 or the TCS-.
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BSS Audio TCS-80X User Manual version v4.0 15 Midi Implementation Both the TCS-803 and the TCS-804 can be controlled externally via the MIDI control interface. All the relevant parameters are accessible where applicable. However, both input headroom and outpupt gain are not available for the TCS-803 model.
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BSS Audio TCS-80X User Manual version v4.0 Receive Notes: The Delay LSB must precede the MSB. If Delay LSB is not received then it is assumed to be 0. Increment may be used to obtain resolution down to 10us. The Stereo mode flag checks for the correct setting of the mono/stereo switch and produces an error message if there is a conflict. Transmit Notes: Delay times are transmitted as LSB then MSB then INCrement. General Notes: Delay times are transmitted and received correctly for 20°C.
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BSS Audio TCS-80X User Manual version v4.0 17 Service section 17.1 Chassis/0V Link removal For both TCS-80X units the signal 0v ground is connected to the metal chassis, which in turn is connected to the safety ground.
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BSS Audio TCS-80X User Manual version v4.0 17.3 Extended memory The maximum available delay time can be easily extended should this be required. Refer to the spare parts information sheet at the back of this manual for details on part numbers for the relevant parts. You will require 2 off for the TCS-804 and 1 off for the TCS-803. Please remember that these chips are static sensitive and that they should be handled with care.
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BSS Audio TCS-80X User Manual version v4.0 18 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. Faults arising from misuse, unauthorised modifications or accidents are not covered under this warranty. No other warranty is expressed or implied.
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BSS Audio TCS-80X User Manual version v4.0 19 Specifications Input section: 10k ohm electronically balanced, +2-dBu maximum input level via XLR 3-31or equivalent. Output section: Electronically balanced and floating, capable of driving +20dBu into 600ohms or greater via XLR 3-32 or equivalent. System performance Conversion method: Frequency Response: Dynamic Range: Distortion: Group Delay Dev: Stereo Sync: User Memory Type: Dynamic floating window PCM. ±0.5dB, 20Hz to 20kHz.
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BSS Audio TCS-80X User Manual version v4.0 Power AC 50VA, 50-60Hz, 120v/240v selectable externally. Pluggable IED power cord. Dimensions/Weight Dimensions: 482 x 44 x 228mm 19 x 1.75 x 9". Weight: 4.5kg net. Options Transformer Balancing: Internal. Memory Expansion: TCS-803 to 1.3 seconds. TCS-804 MONO to 2.6 seconds. TCS-804 DUAL CHN to 1.3 seconds per channel. Temperature Probe: Allows automatic temperature compensation for delay time. Accurate to ±3°C.