Instruction/ maintenance manual of the product SCM810 Shure
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User Guide © 2006, Shure Incorporated 27A8868 (Rev . 1) Printed in U.S.A. SCM810/SCM810AZ SCM810/SCM810AZ EIGHT-CHANNEL MICROPHONE MIXER EIGHT-CHANNEL MICROPHONE MIXER.
2 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 SYSTEM FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 DESCRIPTION The Shure Model SCM810/E is an eight-channel automatic microphone mixer designed for use in sound re inforcement, audio recording, and broadcast applications. The SCM810 dr amatically improve s audio quality in any application w here multiple microphones are re quired.
4 FRONT PANEL FEATURES MODEL SCM810 FRONT PANEL FIGURE 1 Microphone Channel Gain Controls 1–8: Allows adjustment of microphone gain. Input LED 1–8: Lights green when channel is active; lights red at 6 dB below clipping level.
5 DIP SWITCHES The rear-panel DIP switch provides the following setup options. The posi- tions shown in bold type are the factory settings. NOTE: Switch positions and effects are shown in Figure 3 and a lso on the mixer label.
6 INSTALLATION AND SYSTEM SETUP RACK MOUNTING THE MIXER T o mount the SCM810 in a st andard 483 mm (19-inch) audio equipment rack, slide the mixer into the rack and secure it with the supplied Phillips head screws, as shown in Figure 4. Use all four screws.
7 EQUALIZER FUNCTIONS Low Cut Filter (High-Pass) The low-cut (or high -pass) filter allo ws all frequencies above its cutoff point to pass from filter input to filter output without attenuation, while fr equencies below the cutoff are attenuated (see Figure 6).
8 NETWORKING MULTIPLE MIXERS If additional inputs are needed, more SCM810 mixers (as many as 50) can be “linked” using supplied link cables. Such a conf iguration can provide up to 400 microphone inputs. T o link multiple mixers, connect the LINK OUT of the first mixer to th e LINK IN of the next mixer , and so on (see Figure 8).
9 SPECIFICATIONS Measurement Conditions (unless ot herwise specified): Line voltage 120 V ac, 60 Hz (SCM810) or 230 Vac, 50 Hz (SCM810E); full gain; 1 kHz, one channel activated; source impedances: Mi.
10 ADVANCED FUNCTIONS LOGIC CONNECTION SPECIFICATIONS The logic functions of the SCM810 ex pand the mixer's range of inst allation and control options. Logic can be used for everything from simple cough switches to elaborate computer-c ontrolled room systems.
11 SUGGESTED LOGIC APPLICATIONS This section contains suggestions on t he uses of the SCM810's logic capa- bilities. Note that uses of these func tions are not limited to the listed appli- cations. The user is limited only by individual imagination and creativity .
12 Inhibiting Gating for Unwa nted Sounds As described in the Operating Principles section, MaxBus attempts to acti- vate only one microphone per sound source. Muting a microphone channel prevents its audio from appearing at the mixer's output. However , the mut- ed microphone still communicates with other mic channels via MaxBus.
13 Diode Isolation of Logic Controls T wo or more control functions using the same logic pins can be isolated with diodes. In this manner a chann el can be muted by an overall group mute switch, or by its own cough button (see Figure 19-Channels 1, 3 and 5 modified).
14 INTERNAL MODIFICATIONS W ARNING: All modifications must be performed by qualified service tech- nicians. This section describes SCM810 modifi cations that can be made using sol- der “jumpers” on the printed circuit board; the pads where jumpers may be used are placed close together so that a single solder drop functions as a jumper .
15 SCM810 Speech Gate for Mixing Console The SCM810 can be used in conjunction with large mixing consoles to pro- vide automatic mixing for talk shows, panel discussions, and news shows. Large consoles have channel insert jac ks so that e xternal signal process- ing devices can be patched into individual channel si gnal paths.
16 Increase Hold Time In addition to the dip switch SW702 options of 0.4- and 1.0-second hold time, the hold time can be increased to 1.5 seconds. (Mor e than 1.5 sec- onds is not recommended.) Procedure: Install a 470 k Ω resistor across jumper points X902.
16 SHURE Incorporated http://ww w.shure.com United States, Canada, Latin America, Caribbean: 5800 W. Touhy Avenue, Niles, IL 607 14-4608, U.S.A. Phone: 847-600-2000 U.
An important point after buying a device Shure SCM810 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Shure SCM810 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Shure SCM810 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Shure SCM810 you will learn all the available features of the product, as well as information on its operation. The information that you get Shure SCM810 will certainly help you make a decision on the purchase.
If you already are a holder of Shure SCM810, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Shure SCM810.
However, one of the most important roles played by the user manual is to help in solving problems with Shure SCM810. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Shure SCM810 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
