Rauland Mc1350B Control Console 电路图.pdf

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1、-.- 6 ce:J KI-1252-0 DIRECTOR IITMSERIES DESK-TOP CONTROL CENTERS FOR SCHOOL SOUND/COMMUNICATIONS SYSTEMS - RAULAND-BORG CORPORATION ? 3535 West Addison Street, Chicago, Illinois 60618 (312) 267-1300 - - - - - - - - - - - - ATTACHMENTS This service manual includes the following items: MCI350 to SPL1

2、425 System Wiring Diagram KM-0539 Two Room Selector Panels Wiring Diagram KM-0540 Three Room Selector Panels Wiring Diagram KM-0541 DIR350/DIR350L Typical System Wiring Diagram And Multiple Masters Connections Diagram KM-0536/ KM-0535 MCI350 Master Control Intercom Diagram Room Selector Switch Panel

3、 Instruction Manual EQUIPMENT MODEL COMPLEMENT KC-1362 KI-1200 DIR350B DIR35OLB -_- INCLUDED ITEMS -7- X X X SW25 X SWL25 X PSL25 X MCI35OB Room Selector Panel Room Selector Panels/W LightCall-In Power Supply (6.0 Vdc 100 mA) Master Control Intercom Panel VC-6365*Miscellaneous Hardware Items X VC-63

4、66*Miscellaneous Hardware Items X X PCC300A Cabinet W/Accessories *VC-6365 and VC-6366 are assembly numbers used for internal factory control and fabrication purposes. Do not order hardware items using the VC-6365 and VC-6366 numbers. 01980 RAULAND-BORG CORP. PRINTED IN U.S.A. 3/80 PAGE 1 OF 1 7 Rad

5、ioFans.CN 收音机爱 好者资料库 S P E C I F I C A T I O N S Operational Channels:. Two;PROGRAM and INTERCOM. Both channels work independently, permitting simulta- neous PROGRAM distribution to selected rooms and two-way INTERCOM with another room. Unit can be converted to single- channel operation by jumpering

6、 option on circuit board. Room Capacity: Rated Power Output: Output Available: Frequency Response: Distortion: PROGRAM Channel: Less than 2% at RPO Noise Levels (below RPO): Microphone:- 60 dB Auxiliary: - 70 dB Intercom: - 50 dB Inputs: 25, expandable in groups of 25 rooms up to 75 rooms with addit

7、ion of optional SW25 and SWL25 Room Selector Panel (s). PROGRAM Channel: INTERCOM Channel: 35 watts RMS 5 watts RMS 25V balanced and center-taped. Readily convertible to 5V (45 ohms) balanced output. Either output is transformer isolated. PROGRAM Channel:Flat within + 3 dB, 50 Hz to 15 kHz INTERCOM

8、Channel:Shaped for maximum intelligibility; approx- imately 2 kHz to 10 kHz. Microphone:Two balanced 150 ohm inputs using built-in Model R1050 Microphone Transformers. Auxiliary: Two unbalanced 5OOK ohms. Input Sensitivity (for RPO): Microphone: 0.3mV for low impedance. Auxiliary: 0.25V PAGE 2 Radio

9、Fans.CN 收音机爱 好者资料库 Supervisory Tone (Intercom Listen Mode) : Duration: 200 msec Repetition Rate: Every 13 3 sec. Frequency:Approximately 1.2 kHz. Power Requirements: 120 Vac (105-130 V); 60 Hz; 65 watts. Safety Devices: Resettable circuit breaker to input of ac power tra sformer. Automatic reset- ti

10、ng 195 7 F thermostat on inside of rear chassis senses heat sink temper- ature. MCI350 Panel Size: 19 W x 3 H x 10 D DIR350 or DIR35OL Unit Weight: 33 lb. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE 1. DESCRIPTION 1.1 General T.M. The Rauland-Borg Director II Series Desk-Top Control Ce

11、nters are ideal for small and medium-sized schools requiring the features avail- able on console-type control centers. For these schools, the Desk-Top Control Centers thoroughly fulfill communications and program distri- bution needs in a space-saving and cost-saving design which is simple to operat

12、e. 1.2 Program Channel Complete facilities are provided for distributing a variety of program materials from microphone, radio,cassette or tape player, and/or tape recorder. Program distribution to individual classrooms, or selected groups of rooms,or to all rooms is extremely flexible and easily ac

13、complished using the follow-the-color operational tech- nique. 1.3 Intercom Channel - The Desk-Top Control Center provide efficient control of communi- cations throughout your school. Instant,effective two-way voice com- munications can be obtained with any classroom. Classrooms may easily call and

14、communicate with you. Emergency announcements to all rooms is simply made by depressing the ALL-CALL button and speaking into the local microphone/speaker built into the front panel. PAGE 3 2. ACCESSORIES 2.1 Rauland Model 47RCA Remote Control Adapter - - Prepares microphone inputs to program channe

15、l for operation with remotely controlled volume. An optical-isolator within the 47RCA provideshum-freeremote operation as the remote volume control signal is completely isolated from the amplifier input circuits. 2.2 Rauland Model 47RVC Remote Volume Control - - - Provides remote (up to 2,000 feet)

16、volume control of the micro- phones without changing the level of auxiliary sources. Accurate ad- justment to the desired volume level is provided by the calibrated faceplate and the potentiometer taper. Must be used with the Rauland Model 47RCA Remote Control Adapter. 2.3 Rauland Model DO158 Clock

17、Relay - Provides switching that sends a continuous tone to all classrooms indicating class change. Compatible with single-channel, classroom change systems. Switch closure from programmed time-change clock enables DO158 clock relay. OFF buss is gathered and tone frominternal MCI350 circuitry is sent

18、 to all classrooms for the class change notifi- cation. 3. INSTALLATION 3.1 Introduction A well planned equipment installation saves time and assures best equipment performance. Evaluate the following items: Equipment location and type of equipment mounting. Number of microphone inputs to be used. F

19、ield conversion for classroom time-change notification. , Field conversion for remotely controlled functions. Type of output to be used and if line-matching transformers are needed. System wiring to and from amplifier. WARNING - Installation of optional accessories requires removal of amplifier cabi

20、net which could present an electrical shock hazard. Installation of these items must be performed by an authorized Rauland-Borg serviceman. PAGE 4 3.2 Equipment Damaged in Transit This equipment has been carefully inspected and tested at the fac- tory prior to shipment. If the equipment was damaged

21、in transit,notify the transportation company immediately to place your claim. 3.3 How To Access The MCI350 (Desk-Top Models Only) Some disassembly of equipment mounted in desk-top models is required in order to access the MCI350 for connection of field wiring, installa- tion of optional accessories,

22、 modes of operation. and modification to accommodate special Connection of field wiring requires only removal of the back cover to access the screw terminals provided on the rear of the MC1350. Installation of optional accessories and modification to the circuit board requires removal of all equipme

23、nt and blankpanels mounted in the cabinet. Removing An Equipment Panel/Chassis - - - - - - - - - - - - - Step 1.Remove dresspanelby unscrewing two screws from front of panel. step 2.Unplug interconnecting cables,as required in order to free chassis from other units. Tag plugs for identification, if

24、necessary. Step 3.Remove four screws securing chassis to cabinet side rails. Step 4.Re-install by reversing the above sequence. 3.4 Conversion For Remotely Controlled Volume -1- Step 1.Access the MCI350 circuit board as described in Paragraph 3.3. Step 2.Insert the Model 47RCA Remote Control Adapter

25、 into four-pin socket LVl, provided on the circuit board. 3.5 Conversion for Single-Zone Time Change Notification Step 1.Access the MCI350 circuit board as described in Paragraph 3.3. Step 2.Insert the Model DO158 Clock Relay into socket RY2. Step 3.Remove jumper connected across wire wrap terminals

26、 T58 and T59. These terminals are located adjacent to socket RY2. Refer to attached Schematic Diagram KC-1362 for circuit details. 3.6 Modification For Single-Channel System Operation Unshielded speaker lines were often used in older buildings. If these are encountered, single-channel system, it may

27、 be desirable to operate the MCI350 as a instead of incurring the cost of rewiring the building with shielded cable. Operation of a single-channel system temporarily prevents the distribution of program material to rooms while an intercom conversation is proceeding. PAGE 5 TO make modification: Step

28、 1.Access the MC1350 Circuit board asdescribed in Paragraph Step 2.Install a jumper across wire wrap terminals T19 and T20. terminals are located about two inches behind the MONITOR 3.3. These PROGRAM control. Refer to attached Schematic Diagram KC-1362 for circuit details. 3.7 Conversion For 5 Volt

29、 (45 Ohm) Output _-_l_-_-_)- The MCI350 is shipped from the factory wired for 25 Volt constant- voltage outpu-t. If 5 Volt (45 Ohm) output is required: Step 1.Access the MCI350 circuit board as described in Paragraph 3.3. Step 2.Change the secondary connections of chassis-mounted program output tran

30、sformer XF502 as shown in Chart 1, below. Refer to attached Schematic Diagram KC-1362 for circuit details. Chart 1.Program Transformer Output Connections. Wire Color 25V Jumper Change To 5V Jumper _- I_ - _ - - - Blue T56 to T69 T56 to T67 White T53 to T68 T53 to T66 Step 3.Change the secondary conn

31、ections of circuit-board mounted inter- corn transformer XF2 as shown in Chart 2.Refer to the attached Schematic Diagram KC-1362 for circuit details. Chart 2.Intercom Transformer Output Connections. Wire Color 25V Jumpers Change to 5V Jumpers -_- Orange T39 to T35 T39 to T33 White T 4 0 to T36 T 4 0

32、 to T34 3.8 Interface For Multiple-Master Intercom Operationn _ Intercom operation with multiple masters requires interface to wire wrap terminals provided on the amplifier circuit board, and modifica- tions to the room selector panel. Required interface is described in this paragraph. Use of wiring

33、 interface and needed room selectorpanel modifications are given in a subsequent paragraph. Refer to attached Miltiple Masters Connections Diagram KM-0535 for circuit details. Step 1.Locate wire wrap terminals T45 and T48, adjacent to listen/talk relay RYl. These terminals provide the multiple maste

34、r input connections to the amplifier for master operation.Two ten- inch long wires are needed;connect one wire to each terminal,? T45 and T48. PAGE 6 Step 2. Step 3. Step 4. step 5. Step 6. Make three or four twists throughout the length of the wires. Route twisted wires along side of chassis and in

35、sert through access space provided between rear edge of circuit board and chassis bottom. Locate wire wrap terminals T37 and T38, adjacent to listen/ talk relay RYl. These terminals provide the multiple master output connections for the C BUSS on the room selector panel. Connect two two-foot long wi

36、res, one wire to each of these terminals. Make several twists throughout the length of the wires. Route twisted wires along side of chassis and insert through access space provided between rear edge of circuit board and chassis bottom. Locate wire wrap terminals T30 and T31, adjacent to intercom tra

37、nsformer XF2. Remove the jumper connected between T30 and T31 to isolate the center tap of XF2 from circuit common. Connect each master used in the master-to-master configuration to a proven good earth ground. Its recommended that the shield of the wire pair from Master #l to Master #2 be con- necte

38、d to chassis ground at Master #2. 3.9 Remounting MCI350 In Cabinet (Desk-Top Models Only) Cabinet should be upside-down for remounting the MC1350 and the switchbanks in the subsequent paragraphs. Place the MCI350 on the inside of the cabinet. Secure the MCI350 to the cabinet using the four screws pr

39、eviously removed. time, Dont install dress panel at this as controls accessible only through front chassis may have to be adjusted when setting initial levels. 3.10 Rack-Mounting Or Turrent-Mounting MCI350 - If rack-mounting the unit,forced air ventilation is recommended for an enclosed equipment ra

40、ck where the combined rated output power of all equipment exceeds 250 watts RMS, or the input power to the rack from the 60 Hz power line exceeds 500 watts: or where there is the possibility of hotspots due to restricted air flow. CAUTION Failure to observe the above precautions could result in dama

41、ge due to overheating, or could cause a possible fire hazard. PAGE 7 If turrent-mounting the unit,use one of the upper positions in the turrent so that there is sufficient clearance beneath the chassis to make switchbank interconnections. Make sure that the mounting posi- tion selected is deep enoug

42、h to accommodate the 10 depth of the unit, plus the additional space needed to install field wiring and perform routine maintenance functions. CAUTION Observe all safety precautions given above for rack-mounted units. Failure to observe these precautions could result in damage due to overheating,or

43、could cause a possible fire hazard. Install chassis using the following procedure: Step 1.Insert the four #lO TINNERMAN-type clips supplied with the unit over the corresponding mounting holes in the channel rails for the selected mounting position. Smooth side of clip must face towards outside of ch

44、annel rail. Step 2.Secure the MCI350 chassis to the channel rails using the four #l0- sheet metal screws supplied. Dont install dress panel at this time,as controls accessible only through front chassis may have to be adjusted when setting initial levels. 3.11 Room Selector Panel Modifications MASTE

45、R ROOM 4 I 1 MULTIPLE MASTER REMOTE ROOM 3 Figure 1.Sample Multiple Master Intercom System PAGE 8 3.11.1 System Definitions and Capabilities -_c_-_-_-_-_ For intercom operation,the MCI350 is considered to be a master and classrooms to be remotes. When only one MCI350 is used in the system, the confi

46、guration is called a single master with multiple remotes intercom system. This is the typical intercom system and requires no equipment modifications,as shipped from the factory. A multiple master system is shown in Figure 1. Each master in this system is capable of operating with several remotes. M

47、ultiple master systems require modifications to the associated room selector panels dependent upon how the included remotes are used in the system. When a remote can communicate only with one master, it is called a dedicated remote. When all masters in the system are operated with either dedicated r

48、emotes or no remotes,the only modification required is to split the C BUSS on the room selector panel. This isolates the C lines between masters and remotes. In a dedicated remote system, both intercom and program all-call are possible without additional modification. When a remote can communicate w

49、ith more than one master, it is called a multiple-master remote and is used in a system configuration called an intermix intercom system. For intermix systems, the room selector panel must be modified by: (1) splitting the C BUSS, and (2) completely removing both OFF BUSSES. In an intermix system, intercom all-call is possible only if a special buss gathering relay is used. Contact Rauland-Borg Sales Engineering for modification details. Program all-call is not practical as lock-out relays would be required. 3.11.2 How To Split C BUSS -