lexicon LR4 Larc Usr Gd Rev 0电路图.pdf

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1、LR4 LARC Framelink User Guide RadioFans.CN 收音机爱 好者资料库 LR4 Front Panel MACH 1-4 LEDs Indicate which machine is currently selected for LARC control. Power Provides front panel control of power on/off. LED lights when power is on. Rear Panel AC Power Standard 3-pin IEC power connector. 100-115/230V, 50

2、-60Hz internal switches set voltage. MACH 1-4 DE9 connectors for interface to LARC ports of Lexicon 224XL, 480L or 300L. LARC DE9 connector for interface with LARC (Lexicon Alphanumeric Remote Control). Operation The LR4 Framelink allows a single LARC to communicate with as many as four LARC compati

3、ble Lexicon processors (224XL, 300L or 480L). Each mainframe can be individually selected via the LARC and, once selected, operation is transparent exactly as though the LARC were directly connected to that mainframe. LR4 power up behavior and default machine selection varies slightly depending on w

4、hether machines are connected and running when the LR4 is powered on, or are connected while the LR4 is running. If machines are connected and running when the LR4 is powered on, the LR4 will go through a brief set of internal diagnostics tests, then begin successively polling each MACH port to veri

5、fy connections. After identifying the machine con- nected to each port, the LR4 will return to the lowest numbered port with a connected device and activate LARC control. For example, LARC control will default to MACH1 if a device is connected there. If devices are connected only to MACH 3 and 4, LA

6、RC control will default to MACH 3. If the LR4 is already running when connected machines are powered on, the LR4 will recognize the first machine to complete its boot cycle. Unpacking and Inspection After unpacking the LR4, save all packing materials in case you ever need to ship the unit. Thoroughl

7、y inspect the LR4 and packing materials for signs of damage. Report any shipment damage to the carrier at once; report equipment malfunction to your dealer. Mounting The LR4 uses one EIA-standard rack space for mounting in a standard 19 inch (483 mm) rack. The maximum ambient operating temperature i

8、s 104F (40C). Provide adequate ventilation if the LR4 is mounted in a closed rack with heat-producing equipment such as power amplifiers. Power Requirements The LR4 is factory configured for 115 or 230V operation, and is equipped with a 3-pin IEC power connector and detachable cord. Connections Conn

9、ection to the LARC should be made via the flexible 50 ft. cable supplied with the LARC. Connection to other Lexicon devices (224XL, 480L and 300L) should be made using a 10 ft Framelink cable, Lexicon Part No. 680-04734. RadioFans.CN 收音机爱 好者资料库 Specifications subject to change without notice. LR-4 t

10、o Mainframe Cable When connecting the LR4 to a main- frame more than 10 away. use proper RS422, shielded 9-conductor cable, wired as shown to two 9-pin D-sub connectors (male). LR-4 to LARC Cable 224XL, 480L or 300L 224XL, 480L or 300L 224XL, 480L or 300L 224XL, 480L or 300L Dimensions19.0W x 1.75H

11、x 4D (483x45x102mm) 19 rack mount standard, 1U high WeightNet weight: 2.75lbs (1.24kg) Shipping weight: 3.75lbs (1.7kg) Power Requirements100/115VAC, -5/+10% or 230VAC, +10%, 50-60 Hz, 10W (Factory set) Connectors3-pin IEC power connector Rear Panel Connectors5 female DE-9 connectors, RS-422 serial

12、communication, 9600 Baud Front Panel Control5 LEDs, AC power switch EnvironmentOperating Temperature: 32 to 95F (0 to 35 C) Storage Temperature: -22 to 167F (-30 to 75C) Humidity: 95% max without condensation Specifications At the beginning of either identification cycle, the LARC will display the m

13、essage SEARCHING FOR MAINFRAME in the upper display, and the port currently being addressed in the lower display. One of the LR4 LEDs will light to indicate the MACH port under interrogation. Once the mainframe con- nected to that port is identified, the LARC will display the machine identity and ad

14、dress this mainframe as if directly connected. To select another machine for LARC control, press and hold MACH, then immediately press 1, 2, 3 or 4 to select the device you want. If you do not press a numbered key, the LR4 will interrogate and identify the current port and return it to active status

15、. (If you do not hold MACH down, it will perform its normal function as a machine A/B toggle for the active device.) To select another machine, release the MACH button, then repeat the steps described above. RadioFans.CN 收音机爱 好者资料库 Copyright 1996 Lexicon, Inc. All Rights Reserved. Lexicon Inc. 3 Oak

16、 Park Bedford, MA 01730 Tel 781-280-0300 Fax 781-280-0490 Lexicon Part #070-11128 Save these instructions for later use. Follow all instructions and warnings marked on the unit. Always use with the correct line voltage. Refer to the manufacturers operating instructions for power requirements. Be adv

17、ised that different operating voltages may require the use of a different line cord and/or attachment plug. Do not install the unit in an unventilated rack, or directly above heat producing equipment such as power amplifiers. Observe the maximum ambient operating temperature listed in the product sp

18、ecification. Slots and openings on the case are provided for ventilation; to ensure reliable operation and prevent it from overheating, these openings must not be blocked or covered. Never push objects of any kind through any of the ventilation slots. Never spill a liquid of any kind on the unit. Th

19、is product is equipped with a 3-wire grounding type plug. This is a safety feature and should not be defeated. Never attach audio power amplifier outputs directly to any of the units connectors. To prevent shock or fire hazard, do not expose the unit to rain or moisture, or operate it where it will

20、be exposed to water. Do not attempt to operate the unit if it has been dropped, damaged, exposed to liquids, or if it exhibits a distinct change in performance indicating the need for service. This unit should only be opened by qualified service personnel. Removing covers will expose you to hazardou

21、s voltages. This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturers instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a

22、Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designated to provide reasonable protection against such interference in a residential installa- tion. However, there is no guarantee that interference will not occur in a particular instal

23、lation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment OFF and ON, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient the receiving antenna Relocate the equipment w

24、ith respect to the receiver Move the equipment away from the receiver Plug the equipment into a different outlet so that the computer and receiver are on different branch circuits. If necessary, the user should consult the dealer or an experienced radio/ television technician for additional suggesti

25、ons. The user may find the following booklet prepared by the Federal Communications Commission helpful: How to identify and Resolve Radio/TV Interference Problems. This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4. NoticePrecautions L

26、e prsent appareil numrique nmet pas de bruits radiolectriques dpassant les limites applicables aux appareils numriques de la class A prescrites dans le Rglement sur le brouillage radiolectrique dict par le ministre des Communications du Canada. This triangle, which appears on your component, alerts you to important operating and maintenance instructions in this accom- panying literature. This triangle, which appears on your component, alerts you to the presence of uninsulated, dangerous voltage inside the enclo- sure. voltage that may be sufficient to constitute a risk of shock.