Shure UR4D Wireless Micophone Receiver Service Manual 电路图.pdf

UHF-R Service Manual 2005, Shure Incorporated 25-1099 (Rev. 1) 25-1099 Printed in U.S.A. UR4D RECEIVER PRODUCT DESCRIPTION GENERAL The UR4D (Dual Channel) and UR4S (Single Channel) are top the the line UHF band Wireless microphone receivers. Each unit is housed in a single space, metal rack-rack mount chassis. The product is designed in five different frequency Groups spanning from 518 MHz to 865 MHz. DESIGN FEATURES Narrow band track tuned front-end filters. Synthesized tuning with 25kHz steps. High dynamic range LNA and double balanced mixers for maximum compatibility. As many as 40 compatible channels within each 60Mhz band. Front panel LED indication of RSSI and RF overload. Full MARCAD diversity. Tonekey squelching. ASK modulated tonekey sends transmitter data to receiver. Audio Reference Companding noise reduction system. Front panel LED indication of audio signal level. Isolated XLR and ” balanced outputs. Mic/Line switch on XLR output. Pin 1 lift for both XLR and ” outputs. Headphone monitor with separate clip indicator. Bitmap LCD displays. Bi-directional IR link for data communication with UHF-R transmitters. Ethernet and USB connectivity for control and metering. Universal switching power supply with daisy chain power connector. AudioABJ779-810 MHzNavigateRF OLOL AudioABJ779-810 MHzNavigateRF UR4D Wireless Receiver with Audio Reference Companding sync ControlMonitorPower sync Monitor Clip ENTER EXIT push 1 2 Service Note: Shure recommends that all service procedures be perform by a Factory-Authorized Service Center or that the Product be returned directly to Shure Incorporated. RadioFans.CN 收音机爱 好者资料库 225-1099 (Rev. 1) FIGURE 1. UR4D AND UR4S FRONT AND REAR PANELS Receiver Controls and Connectors 1.SYNC Infrared (IR) port. Transmits group, channel, and other settings to a transmitter. 2.Squelch LEDs. Blue (On) = Transmitter signal detected Off = no signal or signal squelched because of poor reception or no tonekey NOTE: The receiver will not output audio unless at least one blue LED is illuminated. 3.RF LEDs. Indicate RF signal strength from the transmitter at each antenna and diversity condition. Amber = normal Red = overload (greater than 25 dBm) 4.Audio LEDs. Indicate audio signal strength from transmitter. Green = signal present Yellow = normal peak Red = overload To correct this level, adjust the transmitter gain. 5.Indicates the name and range of receiver frequency band. 6.LCD Interface. Provides a convenient way to program the receiver from the front panel. 7.Monitor. 1/4” output jack and volume knob for headphones. Monitor Clip LED indicates headphone audio is clipping. Dual models: Push the knob to switch from receiver one to reiver two. 8.Power switch. Powers the unit on and off. 9.AC mains power input, IEC connector. 100240 Vac. 10. AC mains power passthrough (unswitched). Use with an IEC extension cable to supply AC power to another device. 11. Diversity antenna inputs A and B. Note: Antenna inputs are DC biased. Use only antenna combiners and accessories listed. Some types of antenna splitters or other products may short the DC power and damage the receiver. Bias can be removed through internal jumper setting. 12. Mic/Line switch. Changes output level 30 dB (XLR output only). 13. Electrically balanced XLR output jack 14. Lift/GND switch. Lifts ground from Pin 1 of the XLR connector (default = GND). 15. Impedance balanced 1/4” output jack (200) 16. USB jack for computer interface. 17. RJ-45 jack for Ethernet network interface. Accepts both regular and “ruggedized” RJ-45 plugs. 18. Temperature-activated fan ensures top performance in high temperature environments. Clean fan screen as needed to remove dust. sync RFAudio OL AB XX YYY-ZZZ MHzNavigate ENTER EXIT OFF push Control POWER Monitor Monitor Clip push UR4D Wireless Receiver with Audio Reference Companding RFAudio OL AB XX YYY-ZZZ MHzNavigate 17 18 antenna A in 12.7V out 150mA receiver outputs lift GND line mic antenna B in 12.7V out 150mA networking ethernet RJ-45 1011 11 1213141516179 200 balanced low Z network activity receiver outputs lift GND line mic 200 balanced low Z ? 3 245 678 RadioFans.CN 收音机爱 好者资料库 325-1099 (Rev. 1) Standard Operating Conditions Power Supply: 100 VAC to 240 VAC 50 to 60 Hz Temperature: -20C to 57C RF: -80 to -20 dBm into 50 Ohms FM Deviation: <45 kHz of 1KHz tone for THD Squelch Turn the Control wheel to change the parameter Receiver Lock When locked, the receiver settings cannot be changed from the front panel. However, you can still navigate the LCD menu to view the settings (and turn the lock off). Menu: Util Lock Turn the Control wheel to toggle the lock on or off (ON or OFF). LCD View Menu: Util Title Turn the Control wheel to mark an item for display. Push the Control wheel to move to the next item. LCD Contrast Menu: Util Contrast Turn the Control wheel to increase or decrease contrast. Tonekey Menu: Radio Squelch Tonekey Tonekey squelch mutes the outputs unless the receiver detects a transmitter. Tonekey should be left on (On) except for certain trou- bleshooting operations. 525-1099 (Rev. 1) Network Parameters NOTE: The receiver reboots after you press ENTER to accept network parameter changes In dual models (UR4D), these settings affect both receivers (the dual receiver is treated as a single network device). Set the Receiver Network Mode Menu: Util Network 1.Push the Control wheel to move the cursor to the Mode parameter. 2.Turn the Control wheel to set the receiver to one of the following values: DHCP: use this setting when connecting the receiver to a DHCP server. Manual: allows you to set the receiver to a specific IP address or subnet. IP Address and Subnet Menu: Util Network NOTE: To change these settings, the network mode must be set to Manual. 1.Push the Control wheel to move the cursor to any of the following parameters: IP (IP address) Sub (Subnet mask) 2.Turn the Control wheel to change the value. Device ID Assists in identifying receivers through the Wireless Workbench Software (has no effect on network identification). Menu: Util Network 1.Push the Control wheel to move the cursor to the DevID parameter. 2.Turn the Control wheel to set the receiver to change the value. Custom Groups This feature allows you to create your own groups of frequencies. Creating new groups. Menu: Radio Custom 1.Turn the Control wheel to select a custom group number (U1, U2, U3, etc.) 2.Push the Control wheel to move to the Channel parameter and turn it to select a channel (01, 02, 03, etc.) 3.Push the Control wheel to move to the Freq parameter and select a frequency for that channel. 4. Push the NEXT menu key to select a frequency for the next channel in that group. Follow these steps to use the channel scan and group scan features. 625-1099 (Rev. 1) Automatic Frequency Selection Before you begin. Install the receivers in the location where they will be used and power them on. Mute all inputs on mixing devices connected to receivers. Turn off all bodypack or handheld transmitters for the systems you are setting up. Turn on potential sources of interference such as other wireless systems or devices, computers, CD players, effects processors, and digital rack equipment so they are operating as they would be during the presentation or performance. Single Receiver 1. Select Radio Scan Chan Scan using the Navigate keys on the receiver LCD interface. 2.Turn the Control wheel to select a group. 3. Press Chan Scan. The display indicates that the receiver is searching. Once it has finished, it displays the selected channel. 4. Press the flashing ENTER button to accept the suggested channel. 5. Sync the transmitter (see page 15). Networked or Dual Receivers With networked or dual receivers, you can take advantage of the group scan feature to set group and channel settings for all the receivers at the same time. (See page 7 for instructions on networking.) Perform a group scan from any receiver. 1. Select Radio Scan Group Scan using the Navigate keys on the receiver LCD interface. The display indicates that the receiver is searching (Scan In Progress). Once it has finished, it displays the group with the most open channels. 2. If you wish, turn the Control wheel to change groups. The number of open channels for each group is displayed. 3. Press the flashing ENTER button to set all receivers to open channels in that group. NOTE: The group scan feature only works for receivers in the same frequency band. For example, if you did a group scan on a “H4” band receiver, all “H4” band receivers would be set up, but not “J5” band receivers. Multiple ReceiversNot Networked If your receivers are not networked (or in different bands), the group scan cannot automatically set their group and channel settings. However, you can still take advantage of the group scan feature to find the group with the most open channels and the channel scan feature to find open channels in that group. Find the group with the most open channels. Perform a group scan using the steps for a networked receiver (above). However, make a note of the selected group before pressing the flashing ENTER button to accept it. Set the receivers to open channels in that group. Perform a channel scan on the remaining receivers using the steps for a single receiver (above). Make sure to select the same group for each receiver before performing the channel scan. IMPORTANT: After setting the channel for the first receiver, immediately sync the transmitter for that receiver and leave it on so that the next receiver detects that channel during its channel scan. Otherwise, all the receivers will be set to the same open channel. NOTE: Receivers in different bands (H4, J5, L3, etc.) do not need to be set to the same group. 725-1099 (Rev. 1) Networking Receivers Basic Network Connect receivers to an Ethernet router with DHCP service. Use Ethernet switch- es to extend the network for larger installations. Use the receivers default network setting (Util Network Mode = DHCP). Accessing the Network with a Computer If you want to use the Wireless Workbench software, connect your computer to the network and install the software from the CD that came with the receiver. Make sure your computer is configured for DHCP (from Control Panel, click Net- work Connections. Double-click on Local Area Connection. Select Internet Pro- tocol (TCP/IP) and click Properties. Select Obtain IP address automatically and Obtain DNS server address automatically and click OK). NOTE: Some security software or firewall settings on your computer can prevent you from connecting to the receivers. If using firewall software, allow connections on port 2201. Using USB. Connect the computer to the USB port on any of the receivers to access the whole network. Static IP Addressing The receiver also supports static IP addressing. Assign your own IP addresses ( Util Network Mode = Manual). See “Network Pa- rameters” on page 10. NOTE: Dual receivers use a single IP address, which may be set through either LCD interface. Existing UHF Network Installations Both Shures UHF-R receivers and legacy UHF receivers can be networked to the same PC and accessed using the latest Wireless Workbench software. Router with DHCP Router with DHCP Switch Switch Computer (optional) Computer (optional) USB Ethernet ETHERNET 825-1099 (Rev. 1) Theory of Operation and Design Top Level Architecture ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 925-1099 (Rev. 1) CIRCUIT DESCRIPTION General Block Diagram Description The UR4D/S incorporates four separate PC boards: 190-044 main board, 190-045 Microprocessor board, 190-046 Display Board, and 190-043 Headphone amp board. The product is powered by a 3” X 5” universal switching power supply that provides +15V, -15V, and +5V. Power from the switching power supply is connected to the 190-044 main board and distributed from the main board to the remaining boards. +3.3V for the microprocessor is derived from +5V by a linear regulator on the main board. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?