ALLEN&HEATH WARNING – HIGH VOLTAGES Power Supply Unit (PSU) work should only be carried out by qualified personnel. We recommend that you use an approved Allen & Heath service centre for all power supply work. Please contact your local Allen & Heath distributor for more details. http://www.allen-heath.
ALLEN&HEATH GL4000 Dual Function Audio Mixing Console SERVICE MANUAL PUBLICATION: AP2640
INTRODUCTION The information presented in this manual is intended for competent technical personnel to carry out service and product support for the GL4000. It is assumed that the reader is familiar with the related electronic theory and audio terminology, and is able to carry out basic servicing, fault-finding and repair of audio equipment of this type. Service personnel should also be familiar with audio systems, mains earthing and power requirements, as well as handling precautions.
CONTENTS SECTION A TECHNICAL DESCRIPTION ............................................................................................ 2 STANDARD CONSOLE FORMATS & OPTIONS ............................................................. 3 GL4000 DIMENSIONS FOR FLIGHTCASING .................................................................. 4 GL4000M DIMENSIONS FOR FLIGHTCASING ............................................................... 5 SPECIFICATION .........................................................
GROUP LEFT/RIGHT CIRCUIT DIAGRAM sheet 1 .......................................................... C2623 GROUP LEFT/RIGHT CIRCUIT DIAGRAM sheet 2 .......................................................... C2623 MASTER PCB COMPONENT IDENT .............................................................................. AG2626 MASTER CIRCUIT DIAGRAM sheet 1 ............................................................................. C2626 MASTER CIRCUIT DIAGRAM sheet 2 .........................................
SECTION A A SERVICE PROCEDURES CAUTION ! TO AVOID DAMAGE TO INTERNAL COMPONENTS BY MISHANDLING AND/OR MISCONNECTION, ONLY TECHNICALLY COMPETENT PERSONNEL SHOULD ATTEMPT SERVICE WORK ON THIS CONSOLE.
TECHNICAL DESCRIPTION The ALLEN & HEATH GL4000 is an 8 bus Front-of-House and 10 bus On-stage Monitor mixer. It can also be configured for full 8 track, stereo and mono recording. Standard formats are 24, 32, 40 and 48 channels with optional SYS-LINK expander system and RPSD-2 dual supply combiner / monitor. CONSTRUCTION All metal chassis with aluminium extrusions to provide rigidity along the console length.
STANDARD CONSOLES All consoles supplied with separate RPS11 rack mount power unit. Optional RPSD dual supply combiner / monitor. Optional VU meterpod and optional SYS-LINK expander system.
GL4000 DIMENSIONS (consoles up to serial number 403420) The diagrams below give the dimensions for flightcasing the console and power supply unit. 14.2 167.1 418.7 413.4 401.3 158.3 482.6 167.1 100.0 132.5 57.2 465.1 64.7 115.2 2.0 367.6 The RPS11 is supplied with a 2m mains lead with a moulded mains plug and IEC socket. A3m DC output cable is also supplied to connect the RPS11 to the GL4000.
GL4000M DIMENSIONS (consoles from serial number 403421) The diagrams below give the dimensions for flightcasing the console and power supply unit. 14.2 167.1 418.7 413.4 401.3 158.3 482.6 167.1 100.0 132.5 57.2 465.1 64.7 115.2 2.0 367.6 The RPS11 is supplied with a 2m mains lead with a moulded mains plug and IEC socket. A3m DC output cable is also supplied to connect the RPS11 to the GL4000.
SPECIFICATIONS 0dBu = 0.775 Vrms 1.23 V 0dBV = 1 Vrms 0VU meter reading = +4dBu at XLR outputs Reference for high level equipment +4dBu = Reference for low level equipment -10dBV = 310 mV Input Gain Mic/Line Input ............................................ +6dB to +60dB variable Mic/Line + Pad ............................................ -14dB to +40dB variable Line Input ............................................ -14dB to +40dB variable Stereo Line Input ..........................................
CONNECTIONS INPUTS: MIC/LINE IN .................. XLR ........................... pin 2 hot, 3 cold ........... balanced ......... 2 kohms .......... variable -60 to -6dBu MIC/LINE IN +PAD ........ XLR ........................... pin 2 hot, 3 cold ........... balanced ......... 10 kohms ........ variable -40 to +14dBu LINE IN .......................... 1/4" JACK .................. tip hot, ring cold ........... balanced ......... 10 kohms ........ variable -40 to +14dBu STEREO LINE IN ..........
REMOVING A CHANNEL, GROUP, LEFT / RIGHT, MONO or MASTER CIRCUIT BOARD ASSEMBLY Before beginning any service work, remove all power to the console and disconnect any signal cables where necessary. Service work is best carried out with the console inverted or positioned upright on its rear with the connectors removed. Ensure adequate lighting and use the correct tools. Access to the CHANNEL, GROUP, LEFT/RIGHT, MONO or MASTER circuit board is as follows: 1.
REMOVING THE MICRO CIRCUIT BOARD ASSEMBLY Before beginning any service work remove all power to the console and disconnect any signal cables where necessary. Service work is best carried out with the console inverted or positioned upright on its rear with the connectors removed. Ensure adequate lighting and use the correct tools. Access to the MICRO circuit board is as follows: 1.) Working from the rear of the console, remove the screw (A) near to the CHASSIS GROUND terminal on the rear connector panel. 2.
REMOVING A CONNECTOR CIRCUIT BOARD ASSEMBLY Before beginning any service work, remove all power to the console and disconnect any signal cables where necessary. Service work is best carried out with the console inverted on a clean work surface suitably covered to protect the console cosmetics. Ensure adequate lighting and use the correct tools. Access to the connector circuit boards is as follows: 1.) With the console inverted, remove the base.
ASSIGNING AN INPUT CONNECTOR CIRCUIT BOARD ASSEMBLY Before fitting a replacement input connector circuit board assembly, check the assignment of the channel mutes is correct. If possible check the circuit board assembly with the one that has been removed. The assignment links are zero ohm (0R) resistors and are located near to the ribbon harness connector on the input connector board. The channel mute assignment is set by soldering a 0R resistor into one of four locations.
GL4000-832S GL4000M-832n (Stereo configurations differ) stereo 1-8 9 - 16 17 - 24 MASTER 25 - 32 3R 4R 5R 3R 4R 5R 3R 4R 5R 3R 4R 5R 6R 1L 2L 3L 6R 1L 2L 3L 6R 1L 2L 3L 6R 1L 2L 3L GL4000-840S GL4000M-840n (Stereo configurations differ) stereo 9 - 16 1-8 17 - 24 25 - 32 MASTER 33 - 40 3R 4R 5R 3R 4R 5R 3R 4R 5R 3R 4R 5R 3R 4R 5R 6R 1L 2L 3L 6R 1L 2L 3L 6R 1L 2L 3L 6R 1L 2L 3L 6R 1L 2L 3L GL4000-848S GL4000M-848n (Stereo configurations differ) stereo 1-8 9 -16 17 - 24 MASTER
INTERNAL LINK OPTIONS The GL4000 is configured to satisfy most of the applications that are likely be encountered. However, the following internal link options are offered for those applications that may require alternative settings. These options require access to the internal circuit assemblies and resoldering of circuit board links. This work should be carried out by technically competent personnel.
ORDERING SPARE PARTS ORDERING A CONSOLE To order a new console please specify the model number required.
ORDERING AN ASSEMBLY The following assemblies are supplied fully tested. Please note that several of these need to be assigned according to their position in the console. This is done by soldering wire links or assignment pads. It is best to check the assignment settings of the assembly you are replacing before removing it from the console. Please quote the description and order code for the part required.
ORDERING A SPARES KIT It is recommended that the spares kit order code 002-177 is held and maintained by the service agent to enable in-field service repairs to the GL4000 independent of the ALLEN & HEATH factory. If you are an existing ALLEN & HEATH service agent who already stocks the spares kit for the ALLEN & HEATH GL4, you may already stock some of the common parts. A TOP-UP kit 002-178 is available which provides just the parts unique to the GL4000 range.
Faders, Potentiometers, switches, and connectors: 10KA fader 100mm Jungpoon* 10KA x 2 fader 100mm (stereo) Jungpoon* 10KA fader 100mm Alps K* 10KA x 2 fader 100mm (stereo) Alps K* 10KA fader 60mm 20KK (203K) 20KB x 2 (203B 14mm wide) 20KK x 2 (203K 14mm wide) 20KB (203B) centre click 20KB x 2 (203B 14mm wide) centre click 10KC x 2 (103C 14mm wide) 10KAC x 2 (103AC 14mm wide) 200KC x 2 (204C) 200KC x 2 (204C 14mm wide) Pot Nut 9mm Switch 2PCO Latching Switch 2PCO Momentary Switch 4PCO Latching Switch 6PCO La
POWER SUPPLY: Lamp Neon AL0200 Mains Fuse 20mm T3.15A (UK, EC) AL0464 Mains Fuse 20mm T5A (USA) AL2270 Mains Fuse 20mm T8A (DC) AL0487 Transformer 320VA AM2720 Bridge Rectifier 25A 200V AE0239 Transistor MJ3001 AE0240 Transistor cover (inc.
SECTION B B FITTING INSTRUCTIONS CAUTION ! TO AVOID DAMAGE TO INTERNAL COMPONENTS BY MISHANDLING AND/OR MISCONNECTION, ONLY TECHNICALLY COMPETENT PERSONNEL SHOULD ATTEMPT SERVICE WORK ON THIS CONSOLE.
GL4000 Expander Fitting instructions ALLEN&HEATH The GL4000 expander options are designed to attach to either side of the GL4000 console depending on console format. The expander can be fitted to consoles with the integral meterbridge as well as those consoles that do not have the integral meterbridge. The expander modules allow a GL4000 console to be expanded up to a maximum of 48 channels. Please read the following instructions carefully before attempting to fit the module. 1.
EXPANDER POSITIONING 2. The Expander unit must be fitted in the position shown in the diagrams below. GL4000-824 + Expander 1-8 9 - 16 Master 17 - 24 Expander GL4000-832 + Expander 1-8 Expander 9 - 16 Master 17 - 24 25 - 32 GL4000-840 + Expander 1-8 9 - 16 17 - 24 Master 25 - 32 33 - 40 Expander TOOLS REQUIRED: The following tools are required to fit the expander module. 1x 2.5mm Hex key 1x 4mm Hex key 1x 1-point Pozi screwdriver 1x flat point screwdriver 1x long nose pliers 1x 5.
INSTALLATION Only technically competent personnel should attempt to fit the expander module. Disconnect the Power Supply Unit and cables from the console before fitting the expander module 3. Ensure you have a good work surface and clear area before starting work. Carefully invert the console and remove the base panel by removing all screws along the edges of the base panel. Also remove the 3 screws in the centre of the large base panel. Note; do not rest the console on the meterbridge. 4.
5. Attach the adjustable fastener ‘B’ to the inside of the front extrusion of the console and catchplate ‘A’ to the inside of the expander using screws ‘F’ and nuts ‘G’. The mounting holes are located under the front armrest of each unit and are pre-drilled for the adjustable fastener and catchplate. Make sure the movement of the fastener lever does not interfere with the input channel circuit board assemblies. Attach adjustable fastener ‘B’ and catchplate ‘A’ console 6.
7. Screw the 5 plain studs ‘H’ into the extrusion holes of the expander as shown below. expander H H 8. Slide the expander module onto the 7 studs and close the adjustable fastener ‘B’ over the catchplate ‘A’, see 5. The fastener can be adjusted to ensure a good join. Screw in the locking screws ‘C’ into the pretapped holes of the expander. Make sure the locking screws ‘C’ engages with the flat of the slotted studs ‘J’, see diagram below.
9. With the expander module and console securely clamped together, bolt the expander and console front panels together using bolts ‘D’ and lock nuts ‘K’ with a 5.5mm spanner. The input channel circuit board assembly nearest the panel flanges will have to be removed to gain access to the fixing holes. 10. Disconnect the main harness from the end input channel circuit board on the console. Connect the male connector on the expander harness to the console main harness.
EXPANDER ASSIGNMENT 14. Depending on whether the expander is positioned on the left or right hand side of the main console, one or more of the input connector circuit boards (AG2622) will have to be assigned to enable the channel mutes to function correctly. For consoles that have the expander on the right hand side of the console (e.g. expanded GL4000-824S and GL4000-840S consoles) only the expander requires assignment. For consoles that have the expander on the left hand side (e.g.
GL4000-832 + Expander Note: remove existing assignment links on all connector circuit boards before re-assignment. Expander 1-8 3R 4R 5R 6R 1L 2L 3L 3R 4R 5R 6R 1L 2L 3L 9 - 16 Master 3R 4R 5R 6R 1L 2L 3L 17 - 24 3R 4R 5R 6R 1L 2L 3L 25 - 32 3R 4R 5R 6R 1L 2L 3L GL4000-840 + Expander 1-8 9 - 16 17 - 24 Master 25 - 32 33 - 40 Expander 3R 4R 5R 6R 1L 2L 3L Attaching the base panels 15. Attach the base panel joining bracket ‘M’ to the console base using screws ‘E’.
NUMBER STRIP POSITIONING 16. Carefully turn the console the correct way up and fit the new number strips. A complete set of number strips ‘L’ is supplied with the Expander kit. The diagrams below show the combination of strips to be fitted to the expanded consoles.
TESTING THE CONSOLE 17. The fitting of the expander module is now complete. Before re-plugging the console, apply power and check for correct operation e.g. mutes & PFL LEDs illuminate. Please note; to prevent damage to the console chassis, the expanded console must be supported along its entire length. Should you experience any difficulties in fitting this module or have any queries regarding your GL4000 console please contact your ALLEN & HEATH agent.
ALLEN&HEATH GL4000 MIXING CONSOLE SYS-LINK EXPANDER OPTION This option connects a GL4000 console as a channel expander to a second console with just one or two interconnecting cables. Kit GL4000-SL1 = SINGLE Single option to install SYS-LINK to one GL4000 console to allow interconnection to a second console already fitted with SYS-LINK. Kit GL4000-SL2 = DUAL (2x GL4000-SL1) Dual option to install SYS-LINK to two GL4000 consoles. Interconnecting cables not supplied.
FITTING THE GL4000 SYS-LINK EXPANDER OPTION n CHECK THE CONTENTS : GL4000-SL1 rear extrusion earth wire Ribbon harness assembly supplied pre-formed and connected to circuit board assembly. Rear panel D type chassis connector fixings already fitted. 8 x AB2189 4 x foam strips fig. 1 Contents: 1x SYS-LINK circuit board assembly with interconnecting harness and mountings already fitted. 1x SYS-LINK ribbon harness assembly with D type chassis connector fixings already fitted.
Only technically competent personel should attempt to fit the SYS-LINK option. Disconnect the Power Supply Unit and cables from the console before fitting the expander module. p PRELIMINARY: To fit the SYS-LINK option it is necessary to partially remove the INPUT CHANNEL circuit board assembly next to the GROUP 1 circuit board to enable access to the SYS-LINK circuit board mounting holes.
t Refering to fig. 2, disconnect the MAIN HARNESS (E) plugged into the connectors mounted along the edge of the circuit boards from INPUT CHANNEL 1 to GROUP 2. u The Input channel circuit board assembly next to GROUP 1 circuit board can now be removed and placed on the adjacent Input channels. Take care not to stretch the fader wires that are still connected. v Remove the 8 screw fixings already partly screwed into the D type connectors on the SYS-LINK ribbon harness assembly and place to one side.
FITTING THE SYS-LINK HARNESS ASSEMBLY : Refering to fig. 4, use a pair of long nosed pliers to fit the connectors onto GROUPS 1 - 8 and the LEFT RIGHT and MONO circuit board assemblies in the following order: GROUP 1 to GROUP 8, then LEFT, RIGHT and then finally the MONO circuit board assembly. SYS-LINK ribbon harnesses removed for clarity.
1 3 MOUNTING THE SYS-LINK CIRCUIT BOARD: The SYS-LINK circuit board mounts onto the GROUP 1 circuit board using the 4 pillars already fitted to the circuit board assembly. Two of the mounting pillars are fixed with screws (G) and two are 'snap-fit' (H). H H G G fig. 5 To fit the SYS-LINK circuit board to the GROUP circuit board, unscrew the 2 screws already partly screwed into the mounting pillars (G) and align all 4 pillars with the holes in the GROUP circuit board.
1 9 PLUG ON THE INTERCONNECTING CABLES: SYS-LINK connectors are female 25way D-type. Use 25way D-type male to male connector cables. Connect pin one to pin one on all connectors. Connect shield (screen) to 0V. Standard cables are available from electronic suppliers or computer shops. It is advised that the cable is a screened type less than 10 metres. Use professional quality locking connectors.
ALLEN&HEATH GL4000 MIXING CONSOLE THE BENEFITS OF USING SYS-LINK The GL4000 SYS-LINK option allows console to console interconnection by means of just one or two cables. By connecting two GL4000 consoles together the number of input channels may be increased. One console acts as a channel expander (slave) to the second (master). Up to 3 consoles may be 'daisy-chained' in this way. The system is also directly compatible with other A&H consoles fitted with SYS-LINK.
CONSOLE TO CONSOLE CONNECTION USING SYS-LINK 0V 0V 0V 0V 0V 0V 0V AUX2 out AUX4 out AUX6 out AFL out AFL DC 0V 0V 0V 0V 0V 0V 0V 0V AUX2 in AUX4 in AUX6 in AFL in AFL DC 0V LEFT in RIGHT in GRP1 in GRP2 in GRP3 in GRP4 in AUX1 in AUX3 in AUX5 in PFL in 0V PFL DC IN OUT LEFT out RIGHT out GRP1 out GRP2 out GRP3 out GRP4 out AUX1 out AUX3 out AUX5 out PFL out 0V PFL DC GRP5 in GRP6 in GRP7 in GRP8 in AUX7 in AUX9 in MTXA in MTXC in 0V 0V 0V 0V 0V 0V 0V 0V AUX8 in AUX10 in MTXB in MTXD in 0V MONO in B
FITTING INSTRUCTIONS METERBRIDGE FITTING INSTRUCTIONS PFL/AFL ACTIVE GL4000 meterbridge shown The meterbridge has been designed to compliment the Allen & Heath GL series of Live consoles. Its purpose is to monitor the programme signal at the console main outputs i.e; Groups 1 to 8, Left, Right and Mono. The meterbridge is available in various sizes to fit each console size and runs full length.
SECTION C C TECHNICAL DIAGRAMS CAUTION ! TO AVOID DAMAGE TO INTERNAL COMPONENTS BY MISHANDLING AND/OR MISCONNECTION, ONLY TECHNICALLY COMPETENT PERSONNEL SHOULD ATTEMPT SERVICE WORK ON THIS CONSOLE.
Attention Service Departments TECHNICAL BULLETIN Issue No 1 Date 16/01/97 Title: New fader specified for GL4000 Ref.: AHTB96010 Page 1of: 1 Authorisation: CD The following information applies to all GL4000 consoles after serial number 401300. Origin of the change: In accordance with Allen & Heath’s policy of continual product development, a new fader has been specified for GL4000 consoles.
FRONT PANEL LAYOUT L4DSM2 Section C - 3 ALLEN & HEATH
MONO STEREO INPUT SECTION MASTER SECTION REAR PANEL LAYOUT INPUT SECTION
MONO / STEREO INPUT & TALKBACK SHEET 1 OF 3
GROUP / AUX / MATRIX / LR / MONO / 2 TRACK SHEET 2 OF 3
MUTE AUTOMATION SHEET 3 OF 3
40 WAY MAIN HARNESS (x1) STEREO PCB (x4) 26 WAY MPU HARNESS (x1) 24 16 WAY RIGHT HAND HARNESS (x1) MICRO PCB (x1) L / R PCB (x2) } MASTER PCB MONO PCB (x1) (x1) 17 GROUP PCB (x8) SLAVE PCB (x1) 16 INPUT PCB (x8) 9 8 MASTER CONNECTOR PCB INPUT CONNECTOR PCB (x1) (x1) 16 WAY METER 16 WAY LEFT HAND 16 WAY MASTER HARNESS HARNESS HARNESS (x1) (x1) (x1) 1 GL4000-824 INTERNAL LAYOUT Console inverted with the base removed.
TO MONO PCB (AG2625) Gn Bk Bl Rd P5 P2 P4 P3 CHASSIS EARTH TERMINAL CONSOLE POWER WIRING TO MASTER PCB (AG2626) Gn 24/0.2 P2 2BA SOLDER TAG (AK0001) M5 CRINKLE WASHER (AB0304) TO LITTLITE XLR'S Refer to LITTLITE wiring diagram TO MPU PCB (AG2624) Red Gn Gn P22 P20 P21 CHASSIS EARTH TERMINAL DC POWER CONNECTOR Pin 1 = +16V (RED) Pin 3 = -16V (BLACK) Pin 4 = CHASSIS 0V (GREEN/YELLOW) Pin 5 = AUDIO 0V (GREEN) Pin 10 = +48V (BLUE) Pins 2, 6, 7, 8, 9 = not connected GN 24/0.
+V JP2 M1B 2 1K8 V_DIV_REFA 5 METER VU 6 LM393 JP3 47K 10/16 M7A METER VU 3 1 1K0 1N4148 R13 47K C11 10/16 10/16 VR1 PR VA 10K R40 47K 6 U3B 2 C40 TL072 7 5 D41 1N4148 R42 1 3 1K0 R43 47K 2 GRP4/L 3 4 1 R12 3 2 D11 1 4 1 TL072 3 D40 1N4148 2 U1A 4 2 2 +VA METER VU 100K 3 1 R10 METER VU 1K8 R41 D10 1N4148 C10 M7B +VA M4A METER VU 100K GRP1/7 M4B R44 7 LM393 R11 e U4B M1A METER VU LINK OPT -V +VA PEAK R14 1 PEAK U2A V_DIV_REFA 3
8 8 8 V- V+ LM393 4 TL072 4 4 U6C V- V+ U5C LM393 4 TL072 4 LM393 4 TL072 U4C V- V+ U3C V- V+ V- V+ U2C V- V+ U1C e 8 8 8 +VA -VA LK1 LK6 LK11 LK16 LK21 LK26 LINK TCW LK2 LINK TCW LK7 LINK TCW LK12 LINK TCW LK17 LINK TCW LK22 LINK TCW LK27 LINK TCW LK3 LINK TCW LK8 LINK TCW LK13 LINK TCW LK18 LINK TCW LK23 LINK TCW LK28 LINK TCW LK4 LINK TCW LK9 LINK TCW LK14 LINK TCW LK19 LINK TCW LK24 LINK TCW LK29 LINK TCW LK5 LINK TCW LK10 LINK TCW LK15 LINK TCW LK20
SECTION D D POWER SUPPLY CAUTION ! TO AVOID DAMAGE TO INTERNAL COMPONENTS BY MISHANDLING AND/OR MISCONNECTION, ONLY TECHNICALLY COMPETENT PERSONNEL SHOULD ATTEMPT SERVICE WORK ON THIS UNIT.
TECHNICAL DESCRIPTION The ALLEN & HEATH RPS11 power supply is purpose designed for the GL4000 range of sound reinforcement consoles. CONSTRUCTION All metal chassis for rack mounting in a 19" by 3U space. The unit comprises of a 16swg steel front panel with integral top cover and a separate 16swg steel chassis base on which all the main components are mounted. INSTALLATION The RPS11 is designed to occupy 3U (5.25 inches) of rack space.
FUSE RATING & REPLACEMENT The AC mains fuse is located on the rear of the RPS11 unit next to the AC mains connector. In the event of a mains surge or under-rated fuse value, the mains input fuse will rupture. Switch the unit mains “on/off ” switch to the off position and remove the mains lead plug from the “AC MAINS IN” socket on the rear of the unit. Lever out the fuseholder square top with a suitable tool and pull the fuse carrier assembly clear of the body.
5x AB0062 SCREW 6ABx3/8 AB0083 Screw M5x12 AB0304 Washer M5 shakeproof AB0270 Nut M5 lock 4x FRONT FIXINGS TILT COVER TO CLEAR COMPONENTS SERVICE ACCESS
INTERNAL ASSEMBLY & WIRING
PCB COMPONENT LAYOUT
RPS11 CIRCUIT DIAGRAM
SECTION E E RPSD2 DUAL SUPPLY COMBINER MONITOR CAUTION ! TO AVOID DAMAGE TO INTERNAL COMPONENTS BY MISHANDLING AND/OR MISCONNECTION, ONLY TECHNICALLY COMPETENT PERSONNEL SHOULD ATTEMPT SERVICE WORK ON THIS UNIT.
RPSD2 & RPSD APPLICATION RPSD2 & RPSD DUAL SUPPLY COMBINER / MONITOR > MAINS RPSD2 or RPSD MAINS PSU1 DC PSU2 < > MAINS DC < > > DC CONSOLE The RPSD2 & RPSD have been designed to compliment the professional series of Allen & Heath Live sound mixing consoles. Its purpose is to monitor the power supply to the console and let a backup supply quickly and silently take over in the event of a fault occuring on one of the supplies. Both units come in a compact 1U rack mount module.
FRONT & REAR PANELS RPSD2 & RPSD
SPECIFICATION RPSD2 & RPSD For those who spend much of their lives behind the equipment rack the RPSD2 & RPSD units also have main status indicator LEDs (OK) for each supply located on the rear panel. This should prove useful if you need to unplug a faulty unit mid session. A stable green LED will show which supply is still good. If the RPSD2 or RPSD is to be used in an isolated position that obscures direct vision then remote indicators can be connected using the 9 pin D connector on the rear.
RPSD2 INSTALLATION SAFETY WARNING ! Mains electricity is dangerous and can kill. Mains voltage is present within the RPSD2 and the connected power supply units. Do not remove the top cover with mains connected. Check your mains wiring and earthing before switching on. The chassis is always connected to mains earth to ensure your safety. RPSD2 & RPSD Shown wired for typical remote LED display DO NOT REMOVE THE MAINS EARTH CONNECTION! All LEDs steady green = supplies good.
