Shure SCM410E User Manual Download

Page: 1 / 36

Model SCM410E User Guide

2010 Shure Incorporated

27AS8881 (Rev. 3)

Printed in U.S.A.

SCM410E

FOUR CHANNEL AUTOMATIC MICROPHONE MIXER

四频道麦克风自动混音器

NTELLI

-20 -10 0 +6

+12 +18

LIMITER

Summary of Contents for SCM410E

Page 1: ...l SCM410E User Guide 2010 Shure Incorporated 27AS8881 Rev 3 Printed in U S A SCM410E FOUR CHANNEL AUTOMATIC MICROPHONE MIXER 四频道麦克风自动混音器 2 4 6 8 2 4 6 8 2 4 6 8 2 4 6 8 4 INTELLIMIX 20 10 0 6 12 18 LIMITER ...

Page 2: ...ds of time 14 REFER all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is dam aged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 DO NOT expose the apparatus to dripping and splashing ...

Page 3: ...rcuitry Intellimix delivers seamless automatic mixing by combining three separate functions Noise Adaptive Threshold Distinguishes between constant background noise such as air conditioning and changing sound such as speech for each input channel It continuously adjusts the activation threshold so that only speech levels louder than the background noise activate a channel MaxBus Controls the numbe...

Page 4: ...Figure 1 provide the functions listed in the table below Factory setting Last Mic Lock On Keeps the most recently activated microphone turned on until another microphone is activated When defeated microphones turn off after their default hold time XLR Output Level Sets the level of the XLR output to line or microphone level Make sure the output level matches the input level of the device connected...

Page 5: ...supplied bracket screws 2 Place the mixer in an equipment rack and secure it with the supplied rackmount screws and plastic washers Dual Mixer Full Rack Installation 1 Place the two mixers side by side and connect them with two 2 straddle brackets The brackets should straddle the recessed edges on the top and bottom of each mixer 2 Fasten the straddle brackets using eight 8 bracket screws 3 Attach...

Page 6: ...he four 4 supplied wood screws HANGING MOUNT Note The hardware provided is for attachment to wood Other surfaces require the use of appropriate hardware rated for 15 lbs or more 1 Fasten the straddle brackets to the top of the mixer 2 Fasten the straddle brackets to the bottom of the mounting sur face using the four 4 supplied wood screws ATTACHING RUBBER FEET FOR TABLE TOP MOUNTING INSTALLING STR...

Page 7: ...onnected When properly linked the mixers will operate as a system Automatic mixing functions will be shared by all units All input signals appear at all linked mixer outputs Each mixer s Master level control only controls its own output However actual off attenuation will increase as more mixers are linked This reduces excessive noise and reverberation contributed by the increased number of microp...

Page 8: ...d traffic and to control proximity effect The SCM410 has a one pole low cut high pass filter of 6 dB per octave The low cut filter allows all frequencies above its cutoff point to pass through unchanged Frequencies below the cutoff are attenuated see Figure 3 The cutoff point is defined as the frequency where the signal has dropped 3 dB relative to the flat or bandpass region Below the cutoff poin...

Page 9: ... x 8 5 8 x 10 1 2 in Net Weight 1 75 kg 3 86 lbs Certifications SCM410 UL LISTED to UL 60065 and cUL LISTED to CAN CSA C22 2 No 60065 3 Canada SCM410E Conforms to applicable European Union Directives Low Voltage Directive 2006 95 EC Certified to EN 60065 Eligible to bear CE marking Conforms to European EMC Directive 2004 108 EC Meets Harmonized Standards EN55103 1 1996 and EN55103 2 1996 for resid...

Page 10: ...M410 5 x 20 mm T 125mA L 250V time delay 80AA730 Fuse SCM410E 5 x 20 mm T 50mA L 250V time lag 80J380 Long Rack Mount Bracket 53A8484 Short Rack Mount Bracket 53E8484 Straddle Bracket 53B8443 Bagged Hardware Kit 90AW8100 Optional Accessories Line Power Cord 230 240 Vac UK 95A8713 External 50 dB Line Pad A15LA Service Statement For additional technical assistance phone Shure at 1 847 600 8440 In Eu...

Page 11: ...de precedence LOGIC GROUND Logic ground is distinct from audio ground Make all logic ground connections to this pin including power supply ground of ex ternal logic circuitry To avoid switching clicks do not connect logic ground to audio chassis or rack grounds Logic controls are accessed through the high density DB 15 multi pin connector on the rear panel Figure 6 Pin connections are shown in the...

Page 12: ...TE IN of other channels When the chairperson s microphone ac tivates all other microphones mute REMOTE CHANNEL ON INDICATORS Remote indicators can be used to indicate when a talker s microphone is on Connect the LEDs and a 5 volt supply to the GATE OUT pins See Figure 9 To avoid switching clicks in the audio output do not ground the power supply negative terminal in the audio system or rack ground...

Page 13: ...g Each loudspeaker can cause feedback unless it is au tomatically switched off when the talker near it speaks To provide this function connect the GATE OUT terminal of each channel to a separate loudspeaker muting relay See Figure 12 Recommended relays are Ra dio Shack 275 248 Omron G2R 14 DC12 Digi Key number Z745 ND Potter Brumfield R10 E1Y2 V185 Newark number 45F106 or equiv alent NOTE A diode ...

Page 14: ... diodes as shown in Figure 14 With this modification a channel can be muted by an overall group mute switch or by its own cough button EXTERNAL LOGIC DEVICES SCM410 logic levels are directly compatible with TTL and 5V CMOS logic families Mixer logic may be used with 15V CMOS logic if a pull up resistor is used with each GATE output See Figure 15 NOTE For information on logic gate use refer to the ...

Page 15: ...the SCM410 SCM410E paragraph 2 Locate Voltage Selector switch SW9001 adjacent to power trans former T9000 3 Using a screwdriver turn the center rotor to the 230 position 4 Locate Fuse F9000 and replace it with a T 50 mA L 250 V time lag fuse for 220 240 Vac operation 5 Replace the power cord with a cord rated for 220 240Vac operation MODIFYING THE SCM410E FOR 100 120 VAC 50 60 HZ OPERATION As supp...

Page 16: ...ime from the preset value of 0 4 seconds modify the circuitry according to the following table LOCAL AUX OPERATION This modification removes the auxilliary audio from the SCM410 outputs Auxilliary audio originates from the aux inputs of the Shure SCM810 SCM800 and AMS8100 mixers when linked to the SCM410 Procedure 1 Remove resistor R9187 Channel Remove Resistor 1 R1005 R1006 2 R2005 R2006 3 R3005 ...

Page 17: ...e Filibuster Mode IMPORTANT To prevent high frequency oscillation never connect the GATE OUT to the MUTE IN of the same channel unless the Inhibit modification has been made Procedure 1 Short jumper X1007 CHANGING OVERRIDE IN TO MUTE IN FILIBUSTER MODE This modification should only be performed with the Change MUTE IN to Inhibit modification described above This is only necessary if the Mute funct...

Page 18: ...This modification removes a given channel from the IntelliMix automatic mixing circuitry so that a source such as music can be played through a channel of the SCM410 without affecting the automatic mixing of the un modified channels Procedure 1 If necessary modify the channel input to accept line level signals Refer to the Inserting an Input Line Pad paragraph 2 Modify the channel s Override In to...

Page 19: ...㢾䥽䤓幍函䤓ᇭ Ⱁ 㨫㙟䤓㙡㡯㽤㙡䤓㙡ㄶ 庆䟄ぴ幱Ⱁ 㦃㗱扖㢅䤓㙡ㄶᇭ 㔳䟄䄟兎棁㷱嬺厩悸悞㒥嬺侶㢾㙡 ᇬ㡈㙡ㄶ 㧉 10 愺䟄䄟兎ㆤ ᇭ 厌䞷Ⓟ抯㖖䤓扭㘴ↅ 棓ↅᇭ 11 12 榆䟄㺣㒥栎㢅梃ₜ 䞷㢅ㄣ㕣幍䤓㙡 ᇭ 13 㓏㦘冃ㄣ䟀㫋䤓冃 ⅉ 㓶嫛ᇭ 幍 ⅴₚ 嬺㗮 14 㢅ㄣ扪嫛冃䟄䄟兎㒥㙡㗮 ᇬ䁁㾋䄔Ⓙ幍㒥䓸扪幍幍㥃槁楷㻃㒥䇽䄎䘾力㡯㽤㷲デぴ㒥㛣囌 Ⓙ ₙᇭ ₜ尐㦻幍㥃槁厌䆃㻃䄔㻃䤓㡈ᇭ ₜ尐孔㦘䁁䤓 15 Ⱁ啀䞅㟍㦻幍 ₙᇭ 䟄䄟㙡㒥䟄懻㘴ㄣ㖐椞㢅䞷䕅 ᇭ 16 㦻孔函䤓䴉㺣 ℝ G ᇭ 17 ㄣ䶵伊㪖䤓幍扭㘴Ⓙサ㦘㘴㔳孔函䤓䟄䄟㙡 18 ㄶᇭ 棜怆䋺㒥䟄棸 ₜ尐㦻幍㥃槁楷㒥䇽䄎䘾 ₚᇭ 19 ₜ尐峵㟈孬㦻䞱 ᇭ抨㲲㦒咃ⅉ愺㒥䞱㟔椫ᇭ 20 摜尐 ℚ欈扨...

Page 20: ...响应输出限幅器峰值响应输出电平表工作原理 SCM410E 自动混音器的工作原理源自 Shure 的专利技术 IntelliMix 电路 Intellimix 通过结合以下三项独立功能提供了平滑的自动混音噪声适应阈值为每个输入频道区分恒定背景噪声例如空调等和变化音例如语音等它能够持续调整启动阈值从而只有在语音电平高于背景噪声时才启用频道 MaxBus 可以控制为单个声源启用的频道数即使多个麦克风听到了讲话者的声音一个讲话者也只能启用一个频道最后麦克风锁定可让最后启用的麦克风保持打开直到启用另一个麦克风为止如果不使用最后麦克风锁定功能谈话过程中的长时间停顿会导致所有麦克风关闭就如同丢失了所有音频信号最后麦克风锁定功能可以确保背景环境始终存在美国专利号 4 658 425 和 5 297 210 IntelliMix 是 Shure ...

Page 21: ...风电平 XLR 输入连接器活动平衡麦克风电平 XLR 输入有关如何修改这些输入电平的说明请参见内部修改一章 DIP 开关功能图 1 中显示的后面板 DIP 开关提供了下表列出的功能工厂设置最后麦克风锁定可让最后启用的麦克风保持打开直到启用另一个麦克风为止如果关闭了该功能麦克风将在默认保持时间后关闭 XLR 输出电平将 XLR 输出的电平设置为线路或麦克风电平确保输出电平与连接到 SCM410 的设备的输入电平相匹配注释输出电平不会影响辅助输出 AUX OUT 电平限幅器启用输出限幅器并将其默认阈值设置为 16 dBu 有关阈值设置请参见内部修改 12 伏幻象电源如果此开关位于 ON 打开位置 SCM410E 为每个 XLR 麦克风输入提供 12 伏直流幻象电源该功能在使用电容麦克风时特别有用因为大多数电容麦克风都需要使用幻象电...

Page 22: ...硬件还可以使用这些硬件将 SCM268 SCM262 DFR11EQ 和 DP11EQ 等其它 Shure 产品安装在机架上单混音器半机架安装 1 使用八 8 个附带的支架螺钉将短型或长型安装机架固定到 SCM410E 2 将混音器保留在设备支架中并用附带的支架安装螺钉和塑料垫圈固定双混音器全机架安装 1 将两个混音器并排放置并用两 2 个跨装支架连接混音器支架可以跨接在每个混音器顶部和底部的凹入边缘上 2 使用八 8 个支架螺钉固定跨装支架 3 使用八 8 个支架螺钉将短型安装支架固定到组合混音器外侧 4 将混音器保留在设备支架中并用附带的支架安装螺钉和塑料垫圈固定安装半高设备安装支架用机架安装单个 SCM410 E 混音器安装跨装支架安装全高设备安装支架用机架安装两个 SCM410 E 混音器 ...

Page 23: ...固定到混音器底部的四个脚上它能够防止设备滑动并保护桌子表面固定安装顶部安装 1 使用四 4 个支架螺钉将跨接支架固定到机架的凹入边缘 2 使用四 4 个附带的木螺钉将跨接支架固定到安装表面的顶部悬吊安装 1 将跨接支架固定到混音器顶部 2 使用四 4 个附带的木螺钉将跨接支架固定到安装表面的底部为桌面安装固定橡胶支脚安装用于顶部固定的跨装支架将混音器固定到顶部安装表面安装用于悬吊固定的跨装支架将混音器固定到底部安装表面 ...

Page 24: ... OUT 连接输出连接到下一个混音器的 LINK IN 连接输入依此类推请参见图 2 保留第一个混音器的线路输入和最后一个混音器的线路输出插孔不要连接在正确连接的情况下这些混音器可以作为一个系统工作所有设备单元将共享自动混音功能所有输入信号会出现在所有连接的混音器输出中每个混音器主电平仅用于控制其自身的输出但是在连接更多混音器时实际的关闭衰减将增加这样可以降低因麦克风数量增加造成的过大噪声和混响声重要信息如果使用了已连接混音器上的逻辑接线端应将每个设备的 LOGIC GROUND 逻辑接地接线端连接在一起注释 SCM410E 连接是非平衡的为将交流声和噪声降低到最小程度应避免使用过长的缆线应使用高质量的屏蔽缆线并应让其远离变压器或调光器等磁性或电气噪声源要让接地电流保持在最低水平应确保将相连的混音器连接到同一交流...

Page 25: ...低切滤波器降低诸如脚步声机动车行进声等不需要的低频噪声并能够控制近讲效应 SCM410E 具有一个每倍频程 6 dB 的单极低切高通滤波器低切滤波器能够让高于截频点的所有频率在无变化情况下通过低于截频点的频率将被衰减参见图 3 截频点定义为信号相对于平波或带通区域降低了 3 dB 那一点上的频率低于截频点时滤波器随频率的递减而做更大幅度的衰减低切滤波器效果图 3 高频栅形均衡高频均衡器能够产生 6 dB 的增强或在 5 千赫或更高的频率位置切断参见图 4 高频栅形均衡对于提高平坦频率响应调节发出咝咝声的声音麦克风或增强离轴领夹麦克风的声音非常有用高频栅形均衡效果图 4 注释 Intellimix 电路很敏感可能会因静电释放或电源信号线的电干扰而发生频道选通虽然不会发生设备损坏但是正常操作只能在干扰消除后才能恢复 10 8 6 4 ...

Page 26: ...流额定值 50 60 赫兹 100 毫安最大值 SCM410E 220 伏交流额定值 50 60 赫兹 50 毫安最大值主电源突入电流 230 伏交流仅 SCM410E 峰值 0 7 安培温度范围工作温度 7 至 49 C 20 至 120 F 存放温度 29 至 74 C 20 至 165 F 整体尺寸 44 毫米高 x 219 毫米宽 x 267 毫米厚 1 3 4 x 8 5 8 x 10 1 2 英寸净重 1 75 公斤 3 86 磅认证 SCM410E 符合中国 GB8898 2001 GB13837 2003 GB17625 1 2003 SCM410E 符合相应的欧盟指导性原则允许带有 CE 标志低压指导性原则 2006 95 EC 认证符合 EN 60065 EMC 指导性原则 2004 108 EC 专业音频产品标准 EN55103 1996 第 1...

Page 27: ... 95B8889 保险丝 SCM410 5 x 20 毫米 T 125 毫安 L 250 伏时间延迟 80AA730 保险丝 SCM410E 5 x 20 毫米 T 50 毫安 L 250 伏时间滞后 80J380 长型设备安装支架 53A8484 长型设备安装支架 53E8484 跨接支架 53B8443 袋装硬件套件 90AW8100 可选配附件电源线 230 240 伏交流英国适用 95A8713 外部 50 dB 线路衰减 A15LA 维修声明要获得更多技术支持拨打 Shure 电话 1 847 600 8699 如果您在欧洲请拨打电话 49 7131 72140 ...

Page 28: ...关覆盖优先的信息逻辑接地逻辑接地不同于音频接地将所有逻辑接地连接到此插针包括外部逻辑电路的电源接地要避免切换噪声不要将逻辑接地连接到音频机壳或机架接地可在后面板上的高密度 DB 15 多插针连接器处使用逻辑控制图 6 下表中列出了插针连接逻辑连接小心建议只能由有资格的音响工程师使用高级功能 55K 10K 5 V 5 V A B 逻辑等效电路图图 5 从 SCM410E 选通输出逻辑接地静音输入或附带输入到 SCM410E 电路逻辑连接器图 6 插针编号逻辑功能逻辑功能插针编号 1 覆盖输入 1 选通输出 1 6 2 覆盖输入 2 选通输出 2 7 3 覆盖输入 3 选通输出 3 8 4 选通输出 4 选通输出 4 4 5 逻辑接地覆盖输入 1 1 6 选通输出 1 覆盖输入 2 2 7 选通输出 2 覆盖输入 3 3 8 选通输...

Page 29: ...PST 按钮或切换开关参见图 8 替代开关的方法是将主席的选通输出连接到其它频道的静音输入当主席的麦克风打开时所有其它麦克风都将静音远程频道打开指示灯远程指示灯可以用于显示讲话者的麦克风何时打开将指示灯和 5 伏电源连接到选通输出插针参见图 9 要避免音频输出中的切换噪声不要将音频系统中的电源负极接线柱接地或机架接地重要信息如果将单根缆线用于麦克风音频信号和指示灯直流电源必须使用独立屏蔽的线对如果屏蔽线对上不能接通直流电可能会因为直流电线路与麦克风线路之间的电容耦合而产生咔嗒声禁用选通功能旁通要让特定麦克风始终保持打开状态应将所需麦克风频道的覆盖输入插针一起连接到逻辑接地插针选定频道现在的工作方式与非自动混音器的工作方式相同参见图 10 要用内部方式执行此修改请参见内部修改一章中将覆盖输入到逻辑接地内部短接一节的内容...

Page 30: ...的扬声器静音继电器参见图 12 推荐您使用的继电器包括 Radio Shack 275 248 Omron G2R 14 DC12 数字密钥号 Z745 ND Potter Brumfield R10 E1Y2 V185 Newark 编号或具有相同功能的产品注释需要在每个继电器线圈上安装二极管以抑制可能会损坏 SCM410E 的感应电压峰值如果继电器线圈最大电流小于 500 毫安则使用 24 伏继电器的现有音响系统可在不进行修改的情况下用于 SCM410E FILIBUSTER 模式一般情况下在多人交谈时将打开每个话筒的选通以兼顾所有谈话者在 filibuster 模式下麦克风选通保持打开直到交谈者停顿足够长的时间麦克风选通才会关闭此麦克风关闭后其它麦克风的选通功能才能打开这一特性能够防止谈话者被打断要建立 filibuster 模式请参...

Page 31: ...器设置为 5 逻辑控制器的二极管隔离如图 14 所示可以使用二极管隔离使用相同逻辑插针的两个或三个控制功能进行此修改后可以使用整个组的开关或其自己的咳嗽开关将频道静音外部逻辑设备 SCM410E 逻辑电平能够与 TTL 和 5V CMOS 逻辑系列直接兼容如果将上拉电阻用于每个选通输出混音器逻辑可以用于 15V CMOS 逻辑请参阅图 15 注释有关使用逻辑选通的信息请参见 D Lancaster 编著的 Howard Sams Publishing Co 出版的 TTL Cookbook 和 CMOS Cookbook 数字控制器或微机 SCM410E 逻辑插针可以与定制设计的数字控制电路或微机连接从而实现无限制的系统控制功能 M1 M3 D D 逻辑接线端的二极管隔离图 14 逻辑接地组静音咳嗽按钮 D 1N4148 或等效物 5 1 K G1...

Page 32: ...应根据下表修改电路本地辅助操作此修改可以从 SCM410E 输出中将辅助音频去除在连接到 SCM410E 时辅助音频来自 Shure SCM810 SCM800 和 AMS8100 混音器的辅助输入步骤 1 去掉电阻器 R9187 频道去掉电阻器 1 R1005 R1006 2 R2005 R2006 3 R3005 R3006 4 R4005 R4006 主部分增益电阻 6 dB 5 1 k 0 10 k 6 dB 20 k 更改限幅器阈值限幅器阈值 dBu 限幅器 DIP 开关 X9003 R9149 R9142 0 开卸除 20k 4 开短 8 关短 12 开卸除 110k 16 默认值开 20 开卸除 300k 24 开卸除 400k 更改保持时间保持时间秒 X9003 R9073 R9079 0 3 2M 0 4 默认值 1 0 短 1 5 短...

Page 33: ...制修改步骤 1 短接跳线 X1007 将覆盖输入更改为静音输入 FILIBUSTER 模式只应在完成了上述将静音输入更改为抑制修改后才可以执行此修改只有需要在 Filibuster 模式下使用静音功能时才需要执行此操作步骤 1 短接跳线 X1006 2 去掉电阻器 R1087 和 R1082 更改关闭衰减水平该步骤将关闭衰减电平从 13 dB 提供时更改为其它值有关衰减电平和电阻器值请参见下表注释因为已将更多输入频道添加到系统中关闭衰减将稍微增大步骤 1 去掉电阻器 R9178 2 在跳线点 R9177 处安装新的电阻器组选通通过进行此修改可以将多个频道组合在一起从而在其中一个频道启动时所有频道都可以启动此功能在用于唱诗班和声时很有用步骤 1 定位衰减 PD1000 2 将连线从 PD1000 焊接到组中的其它频道例如要将频道 1...

Page 34: ...410E 的频道播放音乐等声音源而不会影响未修改频道的自动混音步骤 1 如有必要可以将频道输入更改为接受线路电平信号参阅插入输入线路衰减段落的说明 2 将频道的覆盖输入更改为打开请参见将覆盖输入内部短接到逻辑接地一段的内容 3 短接跳线 X1001 以从 MaxBus 中去除频道 4 去掉 R1064 以从最后麦克风锁定总线中删除频道启用手动模式此修改可以禁用 SCM410E 的自动混音功能以让其作为标准的 4 x 1 混音器工作步骤 1 短接跳线 X9001 ...

Page 35: ......

Page 36: ...31 721414 亚太地区 Shure Asia Limited 电话 852 2893 4290 传真 852 2893 4055 SHURE Incorporated http www shure com United States Canada Latin America Caribbean 5800 W Touhy Avenue Niles IL 60714 4608 U S A Phone 847 600 2000 U S Fax 847 600 1212 Intl Fax 847 600 6446 Europe Middle East Africa Shure Europe GmbH Phone 49 7131 72140 Fax 49 7131 721414 Asia Pacific Shure Asia Limited Phone 852 2893 4290 Fax 85...

Search results

Summary of Contents for SCM410E

Reviews:

Related manuals for SCM410E

Brands by name

Popular brands

Shure SCM410E, User Manual

Search results

Summary of Contents for SCM410E

Reviews:

Related manuals for SCM410E

Brands by name

Popular brands