Z4ii & Z8ii Manual
Contents
1. 26 General Specifications Ge Se Ge 26 se bb seii 2 amp 2811 Installation and User Manual v1 0 3 Cisu8 Safety Information Safety Notes Regarding Installation Do not expose the unit to water or moisture Do not expose the unit to naked flames Do not block or restrict any air vent Do not operate the unit in ambient temperatures above 35 C Do not touch any part or terminal carrying the hazardous live symbol while power is supplied to the unit Do not perform any internal adjustments unless you are qualified to do so and fully understand the hazards associated with mains operated equipment The unit has no user serviceable parts Refer servicing to qualified service personnel f the moulded plug is cut off the AC power lead for any reason the discarded plug is a potential hazard and should be disposed of in a responsible manner Conformities This product conforms to the following European EMC Standards BS EN 55103 1 1997 BS EN 55103 2 1997 This product has been tested for use in commercial and light industrial environments If the unit is used in controlled EMC environments the urban outdoors heavy industrial environments or close to railways transmitters overhead power lines etc the performance of the unit may be degraded The product conforms to the following European electrical safety standard BS EN 60065 20022. fig 28 Sub card jumper locations 24 amp 2811 Installation and User Manual v1 0 PSU capability and optional device current consumption In addition to supplying the Zone Mixer s circuitry the internal PSU has the capacity to power some additional items which may form part of a complete system These include LM and DM 1 active remote input plates via the Facility Port EQ cards fitted internally and possibly a PM Series paging microphone powered via the Access Port The maximum current capacity of the PSU available for powering external items is 120 mA 241 or 190 mA 2811 Current consumption of the various items is listed in the table below ITEM CURRENT PER UNIT 1 dual mic input plate LM I mic line input plate PM 4 or PM 8 paging 40 mA microphones Bose EQ for MAI2 402 11 12 mA 502B 502BEX EQ for 3302 4402 17 mA 9402 9702 The installer should ensure that the total current drawn by all the external items in a system does not exceed 120 mA 241 or 190 mA 281 Note that PSU performance will be degraded at ambient temperatures in excess of 35 C Ground loops If despite your best efforts the completed sound system hums you probably have a ground loop The offending signal source can often be identified by setting the volume control to minimum then disconnecting the input leads both left amp right channels on each line input until the
3. l6 High pass filter erret ftt l6 Paging mic Input soseer essens sees eke ees PI T EXER 16 Phantom tette ente tiq denne l6 Gai Sc level EE EE N 17 EQ amp high pass filter 17 Zone 17 17 17 Mie 2 o n ro espero err hh Ge Ius 17 Paging mic priority err rette 17 Line 6 priority N OE EE 17 Microphone priority over input at Facility 17 Options and Additional Information 18 LM I and DM I active input plates general eonsideratl ANS sir oos dee ROG AE ON DRR LUE 18 Connecting multiple 15 18 Using the Facility Ports as auxiliary zone inputs 19 RL I and RSL 6 remote control plates general CONSICELrAtiONS cccccccccccscccscccscsccccccsccscccccsccecces 19 Control of music source and level via external DC 19 5 5 EE 19 Music ee ee ee ee ee 20 Fitting Bose Series Il EQ cards 20 2 Application 22 PCB jumper location and settings 23 PSU capability and optional device current consumptiOl sessies see RS Ge se dee Re EG og 25 Ground sesse AE Ee IER OR NG RUNE 25 EMC consideration sesse esse see ee ee Ge ee ee 25 Technical Specifications
4. National or Local Authority regulations governing such systems may require that normal programme material i e music should be muted in an emergency to ensure that any emergency messages are clearly audible The Music Mute input is on a 2 pin 5 mm pitch screw terminal connector It should be connected to the appropriate alarm output on whichever building management system registers the alarm typically the Fire System The alarm output must be volt free if no such output is available an intermediate relay or other isolation device must be installed between the alarm output and the Music Mute input The Mute input can be set to operate on either normally open NO or normally closed INC contacts via an internal jumper see page 23 PCB Jumper location and settings The factory default setting is NO thus requiring a short circuit to be applied across the two pins of the connector for muting to occur Visual indication of muting being activated is given by the Music Mute LED on the front panel MUSIC MUTE INPUT AV Iu NORMALLY OPEN NO CONNECTION fig 21 Music mute normally open MUSIC MUTE INPUT AV T3u NORMALLY CLOSED NC CONNECTION fig 22 Music mute normally closed amp 2811 Installation and User Manual v1 0 15 Claud Setting Up amp Operation Music Inputs Gain amp level To avoid dramatic changes in volume when switching between sources the 2811 24115 music input
5. e eeeeeee ee esee 0 Hardware Considerations 10 Power Supply ss disse Seed ONS ONE Ge ee NE 10 FUSES ANG ratings rettet cens 10 System 10 Music SoUrces etre eerte genes 10 Mono and stereo sources sse 10 Balanced sources eere 10 ZONE II Unbalanced inputs see 11 Microphone inputs ie sesse see sesse ese ee ee ee ee ee ee se ee ie 12 Facility 12 Connecting remote input plate 12 Connecting an LM remote input plate 12 Paging System 13 Connecting a PM4 8 12 16 paging mic 13 Connecting a PMI paging 14 Music 14 Connecting an RL remote control plate 14 Connecting an RSL 6 remote control plate 15 Musie EE br terr trente 15 Setting Up amp Operation 16 Music Inputs Lees essen e eene Re Ge Ge ES EG Ge Ge ee 16 dl OE EE EE 16 Local remote control eene l6 Microphone Inputs eese eere eee eterna nera 16 Phantom teet sege ged SE Ges oer ertet tege tegat l6 Gain amp level tette ttti se l6
6. and or J2 MIC 2 should be moved to their ON positions See page 23 for jumper locations Phantom power should NOT be enabled if dynamic microphones are to be used Gain amp level Each main microphone input MIC I amp MIC 2 is provided with a rear panel preset gain control 4 on page 9 A wide range of gain is available and there should be no problem in obtaining a satisfactory level from any normal microphone The mic gain control should be adjusted by speaking normally into a microphone of the correct type Turn the front panel Mic Level control up to maximum and listen in a convenient zone the rear panel gain control should be carefully advanced until the mic volume is as loud as it is ever likely to be needed and then reduced slightly There should be no audible distortion The use to which the microphone is to be put should be borne in mind karaoke is more likely to overload the mic preamplifier than spoken announcements if the gain is not set correctly In normal operation the mic level in each zone is set with the Mic Level controls on the front panel e amp 8 EQ Each mic input has associated HF and LF EQ controls 5 on page 8 These provide 10 dB of cut or boost at 5 kHz and 100 Hz respectively and should be adjusted by listening to achieve a clear mic sound Again the application should be borne in mind when making adjustments High pass filter Each mic input has a fixed 100 Hz high pas
7. fuse in the IEC connector housing Only replace a fuse with one of exactly the same type The table below gives the correct fuse types VERSION RATING FUSE TYPE 230V 125 mA 20 mm x 5 mm slo blo 125 15 250 20 mm x 5 mm slo blo T250mA The fuseholder may be accessed by prising the slide below the connector open using a small screwdriver The holder has an extra cavity for storing a spare fuse note that the active fuse is that in the inner cavity 10 amp 2811 Installation and User Manual v1 0 System Connections Music Sources Connect the system s various music sources to LINE to LINE 6 All line inputs offer unbalanced connection for stereo sources on a pair of standard RCA jacks phono sockets The sensitivity range available should allow most standard items of audio equipment such as CD players PC based music servers TV tuners etc to operate at a satisfactory level Most equipment of this type will have stereo unbalanced outputs and as long as the source equipment is adjacent to the Zone Mixer normal phono phono leads can be used Always avoid using pre made leads of an unnecessary length Mono and stereo sources The 2411 and 781 are mono mixers the stereo line inputs are summed internally to mono Stereo sources should be connected in a normal stereo configuration using both L and R inputs If connecting a mono source with only a single output it may be connected to either the
8. ground loop by linking the mixer technical ground 0 V to the ground 0 V of the equipment supplying the control voltages To minimise this risk we suggest that all pieces of equipment be in close proximity and supplied from the same power outlet Music level Music level in a zone may be varied over its full range by applying a DC voltage of between 0 and 10V to pin 2 the OV reference being connected to Pin OV on pin 2 corresponds to maximum level and 10V will produce 60 dB of attenuation The rate of attenuation is approximately 165 mV dB Note that there is an internal 4k7 pull up resistor between pin 2 and the internal 15 V rail If pin 2 is left floating this pull up will result in full attenuation The output impedance of the control voltage source should be low enough to overcome the effect of this resistor amp 2811 Installation and User Manual v1 0 19 A Claud Music source Music source for a zone may be controlled by applying various DC voltages of between 0 and 10 to pin 3 the OV reference being connected to pin 0 V at pin 3 will select Line input 6 and between 7 5 and 9V will select Line input I The other line inputs will be selected with intermediate voltages Taking 3 above 9 V will deselect all inputs making the zone effectively off for music The table below lists the DC voltages required at pin 3 to select each line input The third column is the value of a resistor
9. hot SCN When using single core cable D don t connect cold at the 281 241 Unbalanced input e g phono fig 14 Balanced output Unbalanced input using single core screened cable Z8u Z4u Balanced output pin ground pin 2 cold pin 3 hot When using twin and screen cable don t connect the screen at the amplifier end Unbalanced input e g phono fig 15 Balanced output Unbalanced input using twin core screened cable 2411 amp 2811 Installation and User Manual v1 0 lI Cloud Microphone inputs Mic and Mic 2 inputs are intended for the direct connection of microphones They are electronically balanced and transformerless with an input impedance of greater than 2 and optimised for use with microphones of 200 to 600 O impedance Unbalanced microphones may be used by connecting pins 3 to pin cable screen in the XLR plug 15 V phantom power is available see page 16 Phantom Power Each mic input may be routed to any of the zones in use at any level in each zone Each zone may be configured so that any microphone announcements automatically reduce the music level in that zone while the announcement is in progress see page 17 Micl Mic2 Priority for more details The Paging Mic input has the same electrical characteristics as Mic and Mic 2 but is intended for the connection of a dedicated paging microphone Mic signals at this input will route to a
10. left or the right input Balanced sources If it is necessary to connect an item of source equipment with a balanced output to the Zone Mixer a balancing transformer should ideally be connected between the source and the unbalanced input Suitable audio transformers which should have a ratio of 1 1 are readily available from major audio component suppliers The transformer s should be mounted as close to the Zone Mixer as practical and housed in a screened enclosure if they are not individually screened The preferred connection method is shown in fig 10 Balanced outputs XLRs pin ground pin 2 hot pin 3 cold Audio balancing transformers Unbalanced inputs fig 1 0 Balanced Unbalanced wiring using transformer If transformers are not available a balanced source may feed an unbalanced input directly as long as care is taken over how the connections are made A variety of design techniques are in use to implement balanced outputs in audio equipment and some designs require different wiring protocols to others Installers are advised to check the manuals with each item for guidance on how the outputs should be connected to an unbalanced input However the wiring methods shown in fig 1 and fig 12 will work in a large number of cases If hum or other distortion is found to result try disconnecting the cold leg of the balanced output pin 3 on XLRs When using single core cable join cold to s
11. the music level has no effect on microphone or paging volume Local remote control If a zone has an RL or RSL 6 remote control plate or an LM 1 line input plate connected the rear panel LOCAL REMOTE push button must be set to REMOTE button in for the remote controls to be operative and for the corresponding front panel controls to be disabled Zones without such plates should be set to LOCAL button out The setting of the internal PCB jumper JI on each zone sub board is also relevant The default setting is SW This means that zone music source selection will be determined by the rear panel switch setting the front panel control in LOCAL and via a remote plate or other external control in REMOTE If the jumper is set to FR the source selection will always be made with the front panel control whatever is connected at the rear panel or the setting of the LOCAL REMOTE switch If external control of music level only i e not source selection is required JI should be set to FR and the LOCAL REMOTE switch to REMOTE 16 amp 2811 Installation and User Manual v1 0 Microphone Inputs Phantom Power Each microphone input MIC amp MIC 2 has 15 V phantom power available This will be adequate to power a wide range of condenser microphones Some studio quality mics may require a higher phantom voltage and thus necessitate an external PSU To enable phantom power at the mic inputs internal motherboard jumpers JI MIC 1
12. 2741 amp 281 ZONE MIXERS x rd B e o o BE 5 5 MUSIC LEVEL Z Abr FOUR ZONE VENUE MIXER MICROPHONE 1 MICROPHONE 2 MUSIC LEVEL Z Sur EIGHT ZONE VENUE MIXER Installation and User Guide Safety Information 4 Safety Notes Regarding Installation 4 EE EE 4 Safety Considerations and Information 4 Overview Introduction ERE ER Ge NE 5 Scope of this manual eee 5 What s in the DOK iio ovo pae DERE HER NR NAG dd 5 Main Features 5 Optional System Components 6 DM Dual Microphone Input Module 6 LM 1 Mic line input module with remote music COMEPOL 6 RL I Remote Music Level Control 6 RSL 6 Remote Music Level Source Control 6 PM Series Paging 7 PMI Paging Microphone ee 7 Block Dia g FAR siae dd sito phos Ro DEOR OU E DANS M MEE 7 Front Panel Description 8 Rear Panel 9 Installation
13. 3 pin 4 0 dBu 775mV Ground pin 5 to open Balanced Zone Outputs 775 mV 0 dBu 3 pin screw terminal connector Minimum load impedance 600 Maximum output level 20 dBu 7 75 V Music Equalisation 10 dB IOkHz 10 dB 50 Hz General Specifications 230V 10 115 V 106 AC 50 60 Hz Fuse Rating 230 V T100mA H 230V T125mA H 115V T200mA H 115V 250 H Fuse Type 20 mm x 5 mm 250V Dimensions W x H x D 482 6 mm x 132 5 mm 3U x 160 0 mm 3 83 kg net 4 40 kg net 26 amp 2811 Installation and User Manual v1 0 Bose is registered trademark of The Bose Corporation In the interest of continuing improvements Cloud Electronics Limited reserves the right to alter specifications without prior notice amp 2811 Installation and User Manual v1 0 27 NN Cloud Electronics Limited 140 Staniforth Road Sheffield S9 3HF England Tel 44 0 114 244 7051 Fax 44 0 114 242 5462 email info cloud co uk web www cloud co uk
14. 4 2 5 1 6 MUSIC EVEL Zone 2 Zone 3 Zone 4 Zone 5 Zone 6 Zone7 Zone fig 8 Z8u Front Panel Note The front panel of the 781 is shown above The 24115 is identical except that it only has controls for zones 4 Front Panel Description MUSIC SOURCE 6 way rotary switch selecting which Line Input 1 to 6 will be the music source for each zone See page 16 Local remote control 2 MUSIC LEVEL adjusts the music level in each zone See page 16 Music Gain amp Level MICROPHONE adjusts the level of the microphone connected at Mic input in each zone See page 16 Microphone Inputs Gain amp Level MICROPHONE 2 adjusts the level of the microphone connected at Mic 2 input in each zone See 8 page 16 Microphone Inputs Gain amp Level PAGING MIC LEVEL adjusts the level of the microphone connected at the Paging Mic input in each zone This is a preset control and is intended to be set on installation and not readjusted by the user See page 17 Paging Mic Gain amp EQ amp 2811 Installation and User Manual v1 0 POWER latching push button switch with integral green LED amp MUTE red LED which illuminates when an external Music Mute command is applied i e from fire control panel etc See page 15 Music Mut
15. 5mA 20mm x 5mm 10 FOR 115 SUPPLY USE T250mA 20mm x 5mm R R MUSIC MUTE amas Sx Law TO ov TO OPEN RESPECTIVE ZONE rai ams p une s wee Ove 7 eff amp 821 fig 9 7281 Rear Panel Note The rear panel of the 2811 shown above The 24115 is identical except that it only has output connections for zones 4 Rear Panel Description LINE INPUTS 6 pairs of RCA phono sockets Line 1 to Line 6 for connection of music sources Inputs are stereo summed internally to mono See page 10 Music sources LINE INPUT GAIN preset trim control for each input providing 10 dB of gain adjustment for input level matching See page 16 Gain amp Level MIC INPUTS 2 balanced microphone inputs Mic amp 2 on latching XLR sockets See page 2 Microphone inputs MIC GAIN preset mic gain control for each input gain range 10 to 60 dB See page 16 Microphone Inputs Gain amp Level o MIC EQ HF amp LF preset EQ controls See page 16 Microphone Inputs EQ PAGING INPUT dedicated balanced input XLR for paging mic See page 16 Paging mic input Q PAGING MIC GAIN as See page 17 Paging Mic Gain amp level PAGING MIC EQ as See page 17 Paging Mic EQ amp high pass filter PAGING MIC ACCESS PORT 10 5 mm pitch screw terminal conne
16. EVEL CONTROL WIRING REMOTE MUSIC CONTROL PORT RL I SINGLE CORE SCREENED CABLE MAY BE USED fig 1 9 RL 1 control wiring Before the RL I will operate the zone s Music Control Port must be enabled by setting the adjacent push button switch 14 on page 9 Rear Panel Description to REMOTE i e pressing it in In this setting the zone s front panel Music Level and Source Select controls become inoperative As music source selection will still be required from the mixer s front panel when RL 1 is in use the REMOTE setting may be overridden for the source selection control only by moving internal jumper on the sub board for the zone question See page 23 PCB Jumper location and settings for location of internal jumpers Connecting an RSL 6 remote control plate Wire the remote control plate as shown below Twin and screen cable should be used Maximum reliable cable run is 100 m REMOTE SOURCE amp LEVEL CONTROL WIRING REMOTE MUSIC CONTROL PORT 3 USE TWO CORE SCREENED CABLE fig 20 RL 6 control wiring Before the RSL 6 will operate the zone s Music Control Port must be enabled by setting the adjacent push button switch 14 on page 9 Rear Panel Description to REMOTE i e pressing it in In this setting the zone s front panel Music Level and Source Select controls become inoperative Music Mute External muting of music is available at the MUSIC MUTE connector
17. The 2411 2811 were developed and manufactured with high quality materials and components which can be recycled and or reused 4 amp 2811 Installation and User Manual v1 0 Safety Considerations and Information The 2411 and Z8 must be earthed Ensure that the mains power supply provides an effective earth connection using a three wire termination Caution High Voltages Do not touch any part or terminal carrying the hazardous live symbol while power is supplied to the unit Terminals to which the hazardous live symbol refers require installation by a qualified person Caution Mains Fuse The internal PSU contains no user replaceable fuses Mains over current protection is provided by the fuse in the IEC receptacle only replace this fuse with one of an identical type and rating Caution Servicing The unit contains no user serviceable parts Refer servicing to qualified service personnel Do not perform servicing unless you are qualified to do so Disconnect the power cable from the unit before removing the top panel and do not make any internal adjustments with the unit switched on Only reassemble the unit using bolts screws identical to the original parts Cloud __ Overview Introduction Thank you for purchasing this Cloud Zone Mixer We are confident that you will be pleased with its performance features flexibility and reliability The Cloud 741 and 781 are versatile analogue multizon
18. age 19 RL 1 and RSL 6 Remote control plates for more information PM Series Paging Microphones PMI Paging Microphone fig 5 PMI6 fig 6 PMI Cloud PM paging microphones may be connected directly to The Cloud PMI paging microphone is also compatible with the 281 and 741 Models are available which can page to 4 8 the 2811 and 2411 It is much simpler unit which addresses 12 or 16 zones Clearly not all zones on the higher models only one zone See page 14 Connecting paging mic for can be addressed with only one zone mixer See page 13 more information Connecting a PM4 8 12 16 paging mic for more information Block Diagram The simplified block diagram below illustrates the basic signal architecture of the 78 Only the routing and logic for one zone output is shown The architecture of the 2411 is identical the only difference being the number of zone outputs LINE 6 Orr Ce PHANTOM POWER GAIN FACILITY PORT Z 1 Es Lem MIC 2 T l PHANTOM POWER vAN ajaja 123 OUTPUT GATE CONTROLLED PAGING ZX ee OPTIONAL ACCESS MUSIC SOURCE LEVEL p dd REMOTE CONTROL 1 fig 7 Z8u Block Diagram MUSIC amp 2811 Installation and User Manual v1 0 7 POWER Z Sx EIGHT ZONE VENUE MIXER MUTE MICRONHONE 1 d MUSIC SOURCE 3
19. available to allow for rear connectors and cabling The 2411 2811 have low power consumption and there are no thermal considerations other than ensuring that the ventilation grilles are not obstructed once the mixer is installed installed The ventilation grilles are at the rear immediately above the AC input connector in the bottom panel behind the AC mains switch and in the side panels Other equipment may be installed above or below the 2411 Z8II within this constraint The choice of location will be dictated by the specifics of the system and building layout It is recommended that wherever possible the 2411 2811 should be mounted in an equipment rack along with as many of the music sources CD players music servers TV receiver boxes etc and audio power amplifiers driving the zone loudspeakers as practical When deciding the Zone Mixer s location bear in mind that access to it will probably be required even if a full complement of remote controls is being fitted as part of the system as some adjustments can only be made on the mixer itself Power Supply The European versions of the 2411 and 781 operate on standard 230 V AC mains alternative versions are available which operate on 115 AC An IEC mains cable with a plug appropriate for each country is supplied with the European unit The unit s power consumption is 20 VA 241 or 28 VA 28 Fuses and ratings The only user accessible fuse is an AC mains
20. cal socket and can be mounted in a standard flush or surface mounting box of 25 mm depth The plates should be connected to the Music Control port of the relevant zone using single or twin core screened cable as described at page 14 Connecting an RL remote control plate and page 15 Connecting an RSL 6 remote control plate The plate terminations are conventional screw terminals and the Music Control port on the mixer is a 3 pin 5 mm pitch screw terminal connector The remote control plates are passive and thus do not draw any current from the mixer Control of music source and level via external DC It may be necessary in some installations to adjust the music level and select music source in one or more zones from an external control system e g Crestron AMX etc If the Music Control ports are not required for RL 1 RSL 6 remote control plates they may be used to input DC voltages from the external system to effect these adjustments Both music source selection and level can be controlled over their full ranges with a DC voltage of 0 to 10V The pinout of the Music Control port is as follows owe Music level control 0 to 10 V Music source selection 0 to 10 V CONTROL SYSTEM 15V MUSIC SOURCE SELECT MUSIC VCA fig 25 External DC control NOTE If the control voltage source is not isolated from the power earth there is a small risk of creating a
21. cal to the MICI amp 2 EQ controls and should be adjusted similarly A 100Hz fixed filter is also included in the circuitry as with the other mic inputs Zone Outputs In normal operation the music level in each zone will be set by the front panel Music Level control or by a corresponding control on a remote plate Follow the procedure described in Music Inputs Gain amp level page 16 to adjust the music level in each zone EQ The various zones in a building often have different acoustic properties and may also have different models of loudspeaker installed The 2411 and 2811 are fitted with HF and LF EQ adjustments on page 9 for the music signal at each zone output to enable the audio frequency response to be best matched to each zone The controls should be adjusted by listening up to 10 dB of cut or boost at 10 kHz HF and 50 Hz LF is available Note that these EQ adjustments do not affect the frequency response of microphones or paging Priorities The 2411 and 281 offer several options for determining what happens to music signals when announcements are made The options are selected via internal jumpers and should be set to suit the requirements of the installation when the system is installed See page 23 for location of the internal jumpers Mic I Mic 2 priority By default fully automatic voice operated priority is provided for the microphone inputs When either microphone is used all music signals wi
22. cing Cloud PM Series paging microphones and connecting the RL I and RSL 6 remote control plates is also provided This information is also supplied with each optional item Thank you again for placing your confidence in Cloud products What s in the box Unpack the Z8II or 2411 and its accessories with care It is always a good idea to store all packaging if practical in case you ever need to return the unit to your Cloud dealer for any reason As well as this manual the shipping carton should contain the items listed below Please contact your Cloud dealer immediately if any of them are missing or damaged Cloud Z8II 2411 Zone Mixer EC mains lead AC cord with moulded plug appropriate to the territory Set of mating connectors for all rear panel screw terminal connectors Main Features 6 stereo line inputs 8 281 or 4 241 balanced mono line outputs 2 microphone inputs balanced phantom power selectable Separate paging mic input with contact closure zone selection Per zone facility port for optional remote line and or mic input plates Mic routing to all zones with programmable override logic Per zone front panel control of music level music source and mic level Supports per zone remote control of music level and source HF amp LF EQ adjustment for each mic input and for music in each zone music output Preset gain trim control for each mic and music input Line inp
23. control note that the LM 1 does not require a second connection to the Music Control Port to enable this Area 3 has a Cloud PM paging microphone which would be used to originate voice messages to any of the other areas The paging level to Area 3 if required would be adjusted on installation to be at a level that does not cause feedback 22 amp 2811 Installation and User Manual v1 0 Cloud __ PCB jumper location and settings The 2411 and 2811 have various internal jumpers the setting of which may require alteration during installation Note that there are jumpers on both the motherboard and the individual zone sub cards The table below lists each jumper and its purpose together with the factory default setting Note that options selectable by jumpers on the zone sub board are per zone and will need to be set on as many zone sub boards as necessary JUMPER NAME EFFECT DEFAULT MOTHERBOARD JUMPERS phantom power ON MIC phantom power ON phantom power ON MIC 2 phantom power ON power ON Paging mic phantom power ON N C Contact opening required for muting ZONE SUB BOARD JUMPERS Music source selection SW Follows rear panel switch SW FR Always via front panel only Line 6 priority OFF No priority OFF ON Line 6 has VOX triggered priority over other sources 3S 3 seconds release time 3S 6S 6 seconds release time ABSENT 2 seconds release time ON MIC I 2 amp paging mic have VOX triggered priority over
24. creen at the source Unbalanced input LEFT RIGHT RIGHT Balanced outputs XLRs pin ground pin 2 hot pin 3 cold fig I 1 Balanced Unbalanced input 1 Unbalanced inputs LEFT RIGHT Balanced outputs XLRs When using twin and screen cable join cold to screen at in ground 281 241 end pin 2 hot pin 3 cold fig 12 Balanced Unbalanced input 2 Zone outputs Connect the inputs of the power amplifiers feeding the loudspeakers for each zone to ZONE 1 to 8 Note that the zone outputs are all mono All outputs are balanced and will drive input impedances down to 600 Nominal output level is 0 dBu 775 mV The output is designed to drive professional industrial power amplifiers with balanced inputs typically on XLRs In this case wire as the diagram in fig 3 Note that the screen can be left unconnected at the source end if earth loops are a problem ZONE to 4 only on 2411 Balanced outputs XLRs pin ground pin 2 hot 2811 2411 Balanced output pin 3 cold pin ground pin 2 cold pin 3 hot The screen connection at the zone end may be omitted if it helps reduce earth loops fig 1 3 Balanced connection Unbalanced inputs If audio amplifiers with only unbalanced inputs are being used e g hi fi amplifiers the following wiring should be adopted 7811 2411 Balanced output pin ground pin 2 cold pin 3
25. ctor for per zone contact closure paging access See page 13 Paging system connections ZONE OUTPUTS 8 balanced outputs for each zone on 3 pin 3 5 mm pitch screw terminal connector See page Zone outputs ZONE EO amp LF music EQ adjustment for each zone output See page 17 Zone output EQ FACILITY PORT 9 pin female Dsub per zone for connection of remote input plates and other functions See page 12 Facility Ports MUSIC CONTROL PORTS 3 pin 5 mm pitch screw terminal connector per zone for connection of RL I RSL 6 remote control plates See page 14 Music Control 14 LOCAL REMOTE SWITCHES determine whether front panel music source controls will remain active when remote control plates are connected per zone See page 4 Music Control MUSIC MUTE 2 pin 5 mm pitch screw terminal connector for connection of external emergency muting relay e g fire control panel See page 15 Music Mute MAINS Fused receptacle for AC mains includes storage for spare fuse See page 10 Power Supply Only 4 zone outputs on Model 241 Items to amp 2811 Installation and User Manual v1 0 9 Claad Installation Hardware Considerations The 74 Z8Il Zone Mixers are built in 3U high 19 rack mount enclosures It is recommended that the Zone Mixer is installed in a 19 rack wherever possible The units are approx 160 mm deep but 250 mm of rack depth should be
26. e Zone idents a space is provided below each zone s controls for printed labels identifying the zone by name e Source idents space is provided beside Zone source select control for printed labels identifying each music source by name Rack mounting ears the unit may be rack mounted in standard 19 equipment rack It requires 3U of rack height See page 10 Hardware considerations REFER TO BOTTOM PANEL FOR INSTALLATION DETAILS E T 2 oureur om EE owe T het T 3 DE esr e sO ee ine tH eye u i eye israel oy 2 e 5 ei THis UST BE EARTHED ls em ZB OO 2 m CLOUD ELECTRONICS LIMITED ss ZONE GE ZONE 5 22 ZONE SHEFFIELD 89 ENGLAND 3 2 1 TELEPHONE 0114 244 7051 FAX 0114 242 5462 INFO CLOUD CO UK Si OUTPUT 2 H OUTPUT 2 OUTPUT v 210 40 80Hz v pu ps A REPLACE FUSE WITH SAME TYPE AND RATING SA Sl peque FUSE RATING TEM FOR 230V SUPPLY USE Ti2
27. e audio mixers They are intended to form part of permanent sound systems in pubs bars restaurants hotels offices factories and other areas where multiple audio sources background music TV sound etc are in use and need to be easily combined with announcements and or paging in one or more zones They have been designed to interface directly with industry standard paging mic interfaces and are compatible with Cloud PM Series paging microphones Scope of this manual This manual provides a comprehensive guide to the features and functionality of the Cloud 2411 and Z8Il Zone Mixers The two models are identical in facilities and features and differ only in the number of zones they support Model 2411 four output zones Model 2811 eight output zones Please read through the manual to become fully acquainted with the numerous configuration and control functions the units offer The manual is arranged as follows Overview introduction to the Zone Mixers and their options Installation wiring the Zone Mixers in a practical situation Setting Up amp Operation setting the system up and user instructions Options and Additional Information additional information about system options Appendix additional technical information Includes technical specifications The 2411 2811 manual includes full details of the optional LM 1 and DM l remote input panels Basic information on interfa
28. ections For individual zone paging as described above the paging mic priority trigger should be selected to SW by moving J5 on each zone sub board See page 17 Paging mic priority for further information amp 2811 Installation and User Manual v1 0 13 Claad Connecting a PMI paging mic The PM is a simple passive paging microphone suitable for situations where announcements are always made to the same zone s It can be connected directly to Z8I Z4 zone mixers the control cable being wired to the pin s of the Zone Access port corresponding to the zone s in which announcements are required Any or all of the zones may be paralleled if multiple zones need to operate from the PMI An alternative method for achieving paging to all zones is to ignore the control cable altogether and set the paging priority trigger for all zones to VOX By doing so it is the presence of an audio signal from the mic itself that triggers the priority circuitry See page 7 Paging mic priority for further information Either a single 2 pair individually screened cable may be used this gives the neatest finish or two separate standard microphone cables Full connection details can be found in the PMI Installation and User Guide Note that the PMI does not require DC power Connections the PMI are made via the rear cable gland in the base and the screw terminal blocks on the internal PCB U2 and U3 Full connection details can be
29. found in the PMI Installation and User Guide fig 19 below shows the connections between a PMI and 2811 Use of 2 pair cable is assumed the same wiring principle is adopted if separate cables are being used for audio and control PAGING MIC INPUT ZONE ACCESS CONNECTOR EER EL CONNECT TO ZONE S IN USE SCN COLD HOT U2 AUDIO N O N C GND U3 ACCESS fig 1 9 PMI Z8u wiring connections 14 amp 2811 Installation and User Manual v1 0 Music Control Like many other Cloud products the 2811 and 2411 allow remote control of music level and source selection in each zone The Cloud remote control plates models RL 1 music level only and RSL 6 music level and source selection provide an elegant solution though control via a DC voltage from third party systems is also possible see page 19 Control of music source and level via DC Both types of plate connect via the Music Control Port for the relevant zone see 9 Description This connector is 3 pin 5 mm pitch screw terminal type Please refer to page 19 RL I amp RSL 6 remote control plates for additional information regarding cable lengths etc Connecting RL I remote control plate Wire the remote control plate as shown below Either single core screened or twin and screen cable may be used in the case of the latter ignore one of the cores Maximum reliable cable run is 100 m REMOTE L
30. g installation of remote active input plates 12 amp 2811 Installation and User Manual v1 0 Connecting a 1 remote input plate The DM 1 should be connected to a Facility Port using multicore cable with an overall screen 7 of the 9 pins are used so 8 core cable readily available is ideal The DM I s upper is fitted with a 0 way screw terminal connector block and this should be wired to the Facility Port as shown in the diagram fig 6 241 281 FACILITY PORT DM I uppermost PCB fig 16 DM 1 Facility port Note that the cable s screen should be connected to terminal 3 at the DM 1 end and to the shell of the Dsub connector at the mixer end Note also that DM 1 terminals 9 and l0 and Dsub pins and 2 are not used in this connection It may be useful for additional DM Is to be installed in zone to allow the connection of microphones at more than one location within a large room for example See page 18 Connecting multiple DM 1s for details of how to interconnect multiple DM Is Connecting an LM remote input plate The LM 1I should be connected to a Facility Port using multicore cable with an overall screen All 9 pins are used so 10 or 12 cable readily available is ideal The LM 1 includes controls for local music level and source selection the wiring for these functions being catered for on the Facility Port Thus it is not necessary to make any connections to the Zone
31. hum disappears This problem is often caused by terminating a screened input cable into a signal source positioned a significant distance from the mixer A good way of avoiding this potential problem is to use signal sources CD players and the like that are double insulated with no connection to the mains supply earth If a signal feed were derived from a second mixer a club or microphone mixer for example it would be perfectly normal to expect this to be earthed we suggest that a transformer be used to isolate the signal and prevent a noisy loop see page 10 Music Sources Cloud EMC considerations The Cloud 241 amp Z8 fully conform to the relevant electromagnetic compatibility EMC standards and are technically well behaved you should experience no operational problems and under normal circumstances no special precautions need to be taken If the unit is to be used in close proximity to potential sources of HF disturbance such as high power communications transmitters radar stations and the like the performance of the mixer may be reduced we suggest that the microphone cable screen be connected to the shell of the XLR type connector and the line input leads are kept as short as possible 2411 amp 2811 Installation and User Manual v1 0 25 Technical Specifications 20 Hz 20 kHz 0 5 dB lt 0 05 20 Hz 20 kHz Input Impedance 10 kQ balanced pin
32. ic line input module with remote music control LEVEL amp 9 7 4 8 3 9 2 10 1 dore MICROPHONE INPUT MIC LEVEL PRIORITY fig 2 LM I The LM 1 resembles the DM 1 but has one microphone and one stereo line input which provides a convenient access point for the connection of a DJ mixer laptop MP3 player or similar The plate also includes the functions of the RSL 6 Remote Control Plate see below permitting 6 amp 2811 Installation and User Manual v1 0 control of zone music level and source The music ducking facility is also provided for the mic input See page 2 Connecting an LM 1 remote input plate and page 18 LM 1 and DM 1 active input plates for more information RL I Remote Music Level Control n bi w UN NZ P fig 3 RL The RL I is a small plate with a single control for locally adjusting the music level in a zone It is connected to one of the mixer s Music Control Ports See page 14 Connecting an RL I remote control plate and page 19 RL 1 and RSL 6 Remote control plates for more information RSL 6 Remote Music Level Source Control 0 10 MUSIC LEVEL fig 4 RSL 6 The RSL 6 is the same size as the RL I and connects in similar way it allows local music source selection as well as music level control See page 15 Connecting an RSL 6 remote control plate and p
33. l of course only be available to the zone to whose Facility Port the chain is connected Multiple are wired as shown fig 23 Six interconnections are used including a cable screen it will generally be convenient to use the same cable type as that between the mixer and the first DM 1 in the chain the extra cores being ignored 241 281 FACILITY PORT First DM 1 uppermost PCB Second DM 1 uppermost PCB fig 23 Connecting multiple DM plates Remember to consider the current drawn by any additional input plates see page 25 for details of current consumption and PSU capability Using the Facility Ports as auxiliary zone inputs The Facility Port provides a balanced audio input If a port is not connected to DM 1 or LM I remote input plates it may be used as a direct input to the zone from other equipment forming part of the system for example a permanently installed mixer which only ever needs to feed its output to that particular zone Wire an external balanced source to the facility port as shown below Balanced output pin ground pin 2 hot pin 3 cold 281 241 Facility Port fig 24 Auxiliary zone input An unbalanced source may also be connected the use of balancing transformers is recommended and RSL 6 remote control plates general considerations Cloud RL I and RSL 6 remote input plates the same physical size as a single gang UK electri
34. ll attenuate by approximately 30 dB after the announcement the music coua __ signals will restore smoothly to their former level over a period of 3 6 or 12 seconds The Mic 2 priority over music can be disabled on a per zone basis by setting J6 on the relevant zone sub board to the OFF position The release time may also be set on a per zone basis to 3S or 6S by moving J3 or to 12S by removing J3 altogether Note that the release time setting will apply to all music ducking regardless of which priority setting initiates it Paging mic priority When an announcement is made via the paging mic input it has full priority over both the music signals and any microphones in use via Mic and Mic 2 inputs This is a fixed priority and cannot be overridden The paging mic priority can be triggered either by voice detection or by the grounding of the access contact the sub board jumper J5 can be set to VOX for voice triggering the default or set to SW for access contact triggering If PM Series multi zone paging microphones form part of the system J5 should be set to SW When multiple PM Series paging microphones are in use it is possible for one to have a priority over the others This is a function of the microphones not of the mixer please consult the PM Series User and Guide for more information Line 6 priority It may sometimes be necessary for one music input to have priority over all the othe
35. ll zones at a level determined by the front panel preset Paging Level controls ducking the music while an announcement is in progress VOX or contact closure triggering of the paging priority circuit may be selected see page 7 Paging mic priority for more details Facility Ports Each zone of the mixer is provided with a Facility Port in the form of a rear panel 9 pin female Dsub connector The primary use of the Facility Port is for the connection of and LM remote active input plates but it may also be used as a general purpose per zone auxiliary balanced input see page 19 for more information on this application Note that audio connected via a Facility Port will only appear at the same numbered Zone Output and no other The active plates operate on DC power supplied by the mixer The current consumed by each plate is minimal and in the vast majority of installations there will be no power supply issues Nevertheless installers are urged to check the data in the Appendix regarding PSU capacity on page 25 PSU capability and optional device current consumption The pinout of the Facility Port connector is given in the table below mE Remote source select Remote level control Balanced audio input hot Balanced audio input cold s EE NN s we EN ES control vonage Please also refer to page 18 LM and DM active input plates general considerations for further information regardin
36. n the remote plates amp 2811 Installation and User Manual v1 0 17 _ Options and Additional Information LM and DM I active input plates general considerations Cloud 1 and LM I remote input plates the same physical size as a double gang UK electrical socket and can be mounted in the recessed back box provided or in a standard surface mounting box of 35 mm depth The modules should be connected to the facility input of the relevant zone using multi core screened cable as described at page 12 Connecting a DM 1 remote input plate and Connecting an LM 1 remote input plate The module terminations are conventional screw terminals and the Facility Port on the mixer is a 9 pin Dsub type connector A suitable mating connector is provided Great care must be taken when terminating the active input plates power is derived from the mixer and wiring errors may cause failure of the mixer Please check all wiring before testing the system IMPORTANT Please refer to page 25 PSU capability and optional device current consumption for information regarding current draw and power supply capability 18 amp 2811 Installation and User Manual v1 0 Connecting multiple DM Is It may be desirable to connect local microphones at more than one location in a zone in a large function room for example DM 1 dual microphone input plates may be daisy chained to achieve this All DM Is thus wired wil
37. rs for example jukebox in a bar or a digital sound store programmed to make automatic announcements in a public space Line input 6 may be set to have priority in any or all zones over whichever source is selected for the zone by its Music Source control This priority is set by moving jumper J2 to the ON position on as many zone sub boards as required The default setting is OFP When the priority is selected a signal present at Line 6 will force the zone s source selection to that input when the signal disappears the previously selected source will be restored over the time constant selected by J3 Microphone priority over input at Facility Port If an LM I or DM I remote input plate is in use zone it is possible to give any microphone connected at the mixer itself i e Mic Mic 2 or a paging mic priority over input sources connected at the plate This might be desirable in function rooms for example where building wide announcements may need to to interrupt any local use This priority is set by J4 on the zone sub board The default setting is OFF in this position microphones other sources connected at remote input plates will be autonomous and will not be overridden by announcements made via the mixer s mic inputs Setting J4 to ON will give Mic Mic 2 and the paging mic inputs priority Note that this priority is independent of the music ducking function which can be selected o
38. s Music Control Port The LM I s upper PCB is fitted with a 10 way screw terminal connector block and this should be wired to the Facility Port as shown in the diagram fig 7 2411281 FACILITY PORT CABLE SCREEN LM I uppermost 17 1 Facility port Note that the cable s screen should be connected to terminal 3 at the DM 1 end and to the shell of the Dsub connector at the mixer end Before the LM 1 music source and level controls will operate the LOCAL REMOTE push button switch 14 on page 9 Rear Panel Description to REMOTE i e pressing it in In this setting the zone s front panel Music Level and Source Select controls become inoperative Paging System connections Cloud PM Series paging microphones may be connected directly to the 2411 and Z8II Two connections are required the paging mic audio signal should be connected to the Paging Mic Input on page 9 Rear Panel Description and the control cable to the Zone Access port on page 9 Connecting a 4 8 1 2 16 paging mic These microphones are eguipped with both digital and analogue paging interfaces the 2411 and 781 use the analogue interface PM microphones are available in 4 8 12 or l6 zone versions the installer should be sure he she understands how paging zones correspond to mixer zones before commencing wiring Standard two core screened audio cable may be used for the audio signal and stranded multicore cable wi
39. s are provided with preset gain trim controls on page 9 Rear Panel Description These vary the input sensitivity from 12 dBu 195 mV to 8 dBu 2 0 V When setting the system up play audio from all the sources in use and listen to them one at a time in a convenient zone preferably that in which the mixer is located at a reasonable volume Taking a source of average volume as the reference the gain controls of the others should be adjusted so that there is no appreciable difference in volume between any of the sources With a typical CD player as the source setting the gain on its channel to mid way is a good starting point Note that consideration may need to be given to the type of programme in use particularly if one or more sources are TV sound In normal operation the music level in each zone is set with the Music Level control on the front panel 8 Front Panel Description This control will not be operative if the corresponding rear panel LOCAL REMOTE push button is set to REMOTE When setting the audio system up set the gain controls if any on the power amplifiers for each zone to minimum then turn the Music Level control the mixer to maximum Then increase the zone volume by turning up the power amplifier gain until it is as loud as will be required in normal use This method ensures that excessive volumes will not be possible with the mixer s operational controls Note that the setting of
40. s filter to remove the lowest frequencies This helps to reduce the effects of breath blasts and microphone handling noise The filter is always in circuit Paging mic input Phantom Power The paging mic input also has 15 V phantom power available This will NOT be required if a Cloud paging microphone is being used with the mixer but may be necessary with other manufacturers equipment It is enabled by moving internal motherboard jumper J3 to its ON positions See page 23 for jumper locations Gain amp level The paging mic input has a rear panel preset gain control on page 9 A wide range of gain is available and there should be no problem in obtaining a satisfactory level from most paging microphones The mic gain control should be adjusted by making an announcement Set the front panel Paging Mic Level preset control at about halfway and listen in a convenient zone the rear panel gain control should be carefully advanced until the announcement is heard clearly and without distortion If possible the person who will normally make paging announcements should speak when making this adjustment Following the setting of the paging mic gain the paging level in all the other zones should be set by listening in each zone with the Paging Mic Level controls on the front panel e on page 8 EQ amp high pass filter The paging mic input has associated HF and LF EQ controls on page 9 Rear Panel Description These are identi
41. signals at facility port VOX Paging mic signal triggers priority SW Contact closure at Access Port enables paging mic priority J6 MIC I MIC 2 priority OFF No priority mics mix with music ON Music ducks when mics in use The diagram below shows the locations of the internal jumpers not to scale on each of the board types The jumpers have two possible positions the black square in the symbol indicates the default setting If any jumpers need to be changed turn the Zone Mixer off and disconnect it from the mains Undo the 6 screws securing the top cover of the unit and remove it Use a pair of small pliers to gently remove the jumpers from the PCB headers and reposition them The jumpers on the zone sub boards are readily accessible from above those on the motherboard will require long nosed pliers Refix the top cover using the original screws fig 27 and fig 28 give the locations of all the jumpers and of the socket for the optional Bose EQ cards 2411 amp 2811 Installation and User Manual v1 0 23 FRONT OF UNIT P M to io 2 2 2 N N N ZONE SUB CARDS MOTHERBOARD at bottom of chassis POWER TRANSFORMER 78 ONLY KEY cm Jumper with two possible positions black square indicates factory default setting fig 27 Jumper locations J6 J3 J2 J5 J4 J1 oe COMPONENT SIDE SOCKET FOR OPTIONAL BOSE EQ CARD
42. th an overall screen for the control cable The number of cores required in the latter will be determined by the model of PM microphone being used and whether the mixer is 2411 or 2811 however note that one additional core will be required if the PM Series microphone is to be powered from the Zone Mixer Connections on the PM microphone are made via the rear cable access glands and screw terminal blocks on the internal PCB TERMI TERM4 and TERM8 in this case Full connection details and notes on power supply considerations can be found in the PM Series Installation and User Guide fig 18 shows both the cable connections between a PM8 and a 281 Note that DC power supply connection will not be required if the PM microphone is powered independently either by a local PSU or via the CDPM digital network from another PM unit 8 PAGING MICROPHONE TERMI TERM2 8 ev 21 22 28 24 25 zs 27 ze eno Es FI 11 het ppl This connection only required if the PM Series microphone is to be powered from the mixer 21 272 23 24 25 ze 27 28 Lov sv co cw ZONE ACCESS PAGING MIC INPUT 2811 MIXER fig 18 8 Z8u wiring conn
43. ut 6 may have priority over other music inputs Accepts Bose EQ cards External Music Mute input for interfacing with emergency systems 30 19 rack mounting unit amp 2811 Installation and User Manual v1 0 5 _ Claud Optional System Components The following components may form part of the audio system and may be ordered separately if required They may also be retrofitted to a system at a later time DM I Dual Microphone Input Module MICROPHONE INPUT MUSIC DUCKING OFF ON T MICROPHONE 1 INPUT C fig 1 DM 1 The 1 is an active input plate which allows one or two microphones to be connected to the Zone Mixers in a remote location Each microphone has its own level control and overall preset HF LF EQ controls are also provided A Music Ducking button activates the Zone Mixer s priority circuitry when enabled a microphone signal from the DM will reduce the music level in the zone where it is installed The DM 1 connects to one of the unit s Facility Ports and the microphone signals are fed to that zone only The mixer s Mic and Mic 2 inputs remain available Multiple 1 in the same zone may be daisy chained to provide mic inputs in more than one position The DM I fits a standard UK style dual gang electrical back box See page 12 Connecting a DM remote input plate and page 18 LM I and DM 1 active input plates for more information LM I M
44. v1 0 amp 2811 Installation and User Manual v1 0 21 Application example The 78 will find application in many types of premises including shops bars hotels schools conference centres offices etc A typical example using most of the Zone Mixer s facilities is given below CD PLAYER POWER AMPLIFIERS 2 FREEVIEW RECIEVER RADIO p 2 4 TUNER i AREA 2 4 l l 1 l l 1 K l PAGING MIC LOCAL PAGING ACCESS trl MICS I22l2csepeszt22c2 3 C 4 MUSIC CONTROL PORTS 4304 ALTOV4 K PAGING MICROPHONE d fig 26 Example application The diagram depicts a system where four possible music or other audio sources are made available to three or more zones areas Only three are shown for clarity Points to note Area and Area 3 have remote control plates installed an RSL 6 music level and source in Area and an RL 1 music level only in Area 3 These are wired to the Music Control Ports for their respective zone outputs Area also includes a DM dual mic input plate permitting microphones to be plugged in locally for PA purposes in that area This is wired to Zone 1 Facility Port Area 2 includes an LM mic line input plate wired to Zone 2 Facility Port This would allow both a microphone and portable stereo music source to be connected in that area The LM also provides music source and level
45. which should be connected between pins and 3 to permanently force a zone to a particular line input om x Note that there is an internal 15k pull up resistor between pin 3 and the internal 15 V If pin 3 is left floating this pull up will cause OFF to be selected The output impedance of the control voltage source should be low enough to overcome the effect of this resistor Fitting Bose Series 1 EQ cards The 2411 Z8Il are compatible with Bose Series II loudspeakers a single channel equalisation module may be fitted to as many Zone outputs as necessary Equalisation modules for the following Bose models are available Panaray MAI2 402 1 502B and 502BEX Panaray LT Series Models 3302 4402 9402 and 9702 Other modules are available please enquire To install equalisation modules first remove the top cover from the 2411 2811 6 screws The modules plug into the white 12 connectors labelled CON2 on the vertically mounted sub cards there is one sub card for each zone output Note the header connectors on the PCB have two notches on one side only these engage with lugs on the equalisation module s mating connector to ensure correct orientation See the Appendix section PCB jumper locations and settings page 23 for further details Replace the top cover with the original screws after fitting 20 amp 2811 Installation and User Manual
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