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1. Front Panel for SB Audigy Live Value and CMI 8738 Optical amp Coaxial S PDIF and AUX User Manual http www opticompo com e opt Lompe info opticompo com ELECTRONICS 4 25 1999 Ver 1 0 8 25 1999 Ver 1 1 1 5 2000 Ver 1 2 3 3 2000 Ver 1 3 08 20 2003 Ver 2 0 2 POFP SIPDIF front panel User Manual Thank you for purchasing optiCompo s POFP nice Priced Optical Front Panel Please read the following installation procedure carefully and you will enjoy a wide variety of S PDIF recording options with your sound card Some features your POFP has to offer e Interconnectivity Using the POFP you can finally connect your S PDIF audio devices to your SoundBlaster Audigy Live or even a CMI8738 sound card e Independence You can interconnect S PDIF audio devices independent of their output type coaxial or optical jack e Comfort Never again search the SPDIF or AUX connectors at the back of your computer crouching on the ground or the table e Service If you have problems with your PO7 please check our homepage for usefull hints and solutions http www opticompo com Before contacting optiCompo try to solve the problem by reading this User Manual or the manuals and help files for the other used devices and software If these manuals leave any questions we provide e mail support at audiosupport opticompo com So than Just enjoy the digital world of music Your optiCompo
2. _ i xternal m T OSlink External means to take the signal from the optional digital extension that is connected on X2 d4Od sjesayudiiod ade Bra User Manual apis JES 1 Japoaosp 2 9 T fmm Lj OW yu a qea your 5 HI XIV ayqes UI SOL yuso agea OL do Jajdepe lt yuysol 44S Sun Sor punos gez aJ Jo jaAr ABipny gs PES 84501 jeando AC 3 ef ndo ui di Ci a T e q DAT Jap102831 i 10 gy a Ae d 17 ap genio d POFP SIPDIF front panel 8 POFP SIPDIF front panel User Manual software Setup Windows 9x ME 2000 XP It can be necessary to perform some adjustments to the software mixer to reach a good performance of the POFP CMI8738 sound cards If not allready done we suggest installing the latest known driver In this case you can get drivers at the chip producer s homepage http www cmedia com tw E g the Zoltrix Nightingale and the AudioExcel AV511 are equipped with a CMI 8738 sound chip important for finding the correct driver Mixer Settings Please start the mixer The configuration of the SPDIF interface is found at Advanced Settings Make sure SPDIF OU
3. such the sample rate converters to be useful would be fairly expensive in silicon Furthermore since the EMU10K1 is clocked o the AC 97 CODEC master clock which is based on 48 kHz a separate clock and crystal would be necessary to support 44 1 kHz At least if audio quality were important since a standard phase locked loop or divider system would introduce too much jitter And since the job could be done externally fairly straightforward we felt making all users bear the cost burden of this feature for the few who would use it was a poor trade off Also we are trying to promote the uniform system design which will be found in the modern digital studio in which the digital inputs bear the burden of sample rate normalization For those few users who for some reason seem to need a 44 1 kHz SPDIF output they ll either have to purchase a sample rate converter box Analog Devices makes a 20 chip which will do the job nicely or as would tend to recommend convert their operation to 48 KHz throughout and if 44 1 kHz is needed for CD have this jobbed out at CD production like most people do Why must all the sound sources pass through the sampling rate converters It s not actually true that every sound source must pass through sample rate conversion If the Sound Blaster Live can serve as the master 48 kHz clock for the sound source as provided for in the newest operating system then the source need not be converted But any external source ca
4. F front panel User Manual Optical Digital Signal Connections Take TOS ink or TOS ink to Miniplug cable TOSlink cables are offered in nearly arbitrary lengths in most audio shop We recommend to limit the length to 10m and to avoid sharp bendings of the cable Otherwise the cable loses may prevent an error free transmission There are mainly two different types of optical plugs e ODT TOSlink plug used by HiFi devices MD and DAT recorders POCAB e 3 5mm 1 8 inch optical miniplug used by portable MD and DAT recorders Please use the protective caps for the optical interfaces when they are not in use L This prevents dust scratches etc which lower the signal quality Coaxial Signal Connections Take cinch RCA cable rated at 75 Ohms usually any cinch RCA cable that is good enough to carry a video signal will also be adequate for carrying a digital signal For distances of more than 2 meters we recommend to use shielded coaxial cable for reliable and high quality transmission like digital coaxial cable sometimes also referred to as SPDIF cable The input accepts signal levels from 0 5 to 5 Vpp The output delivers a voltage level of 1 6 V the signal ground is decoupled from the computer s ground Choosing the DIGITAL IN The SELECT switch chooses the SPDIF input signal that is passed to the sound card The switch positions are Digital INPUT from Coax
5. T is enabled Detailed instructions should be found in the sound card documentation The SPDIF signal s volume cannot be adjusted for recording purposes make sure the signal level is ok Advanced SPDIF SPOIF loopback ta SPDIF OUT bypass M Enable SPDIF OUT Monitor SPDIF IN Digital SPDIF IM signal pass to analog LINE OUT SPDIF OUT level 5Wp p Optica 0 5Wp p Coaxial SPDIF IM Format Normal Inverse Diagnose Enable SPDIF INZOUT Copyright protection Enable SPDIF IN Validity detection HRTF 3D Sound CPU Utilization High C Low Wave Channel For CD playing 6 Noma Onlpleft Only right Enable Microphone Booster Enable Large Screen Display Made Enable Hot Keys Volume Alt F Cu F Shit window inser Volume F Alt F cup shti window se Mute Al ES She Window inse m el Display Ale F F Shit window nset v Load Miser Defaults Advanced Settings design varies with the driver version POFP SIPDIF front panel User Manual 9 SoundBlaster Audigy Live Mixer Settings Start the Creative mixer It should look similar to our screenshot e You will find an SPDIF IN controller i MIXER E The adjustment of the recording level is a little unusual for digital recording assume your sound signals are already digitised so the volume is fixed Nevertheless you probably will have to corr
6. a few parts per million must be eliminated So when we went to design the EMU10K1 we had to choose a single master sample rate at which the mixer would operate and of course we had to design sample rate converters to change any incoming audio to match this sample rate This is the technology required to achieve digital mixing that s why it s first featured by Sound Blaster Live It was obvious that either 44 1 kHz the CD standard or 48 kHz the professional audio and DVD standard were the only possible choices for the master sample rate We picked 48 kHz for a variety of reasons First if we were processing incoming audio at nominally 48 kHz use of 44 1 kHz would lose information Second even in preparation of 44 1 kHz CDs in professional studios today 48 kHz is the preferred standard with a final conversion to 44 1 kHz as the last step Third the nearly twice larger guard band the difference between 20 kHz and the Nyquist frequency of 24 kHz means virtually every audio process and effect performs much better at 48 kHz than at 44 1 kHz And finally the economical AC 97 CODEC operates at 48 kHz The SPDIF outputs provide the exact EMU10K1 effects engine outputs so they operate at this same 48 kHz rate So why didn t we add sample rate converter to each SPDIF output to convert the 48 kHz signal back to 44 1 kHz The primary reason is cost Since these outputs are master signals they should be treated as very high quality and as
7. als will also be forwarded to the second module This is especially usefull for permanent signal connections which can now be cabled on the back of your computer without the cables hanging in front of your feet or on your desk all the time Simply ask for the free connection cable when you purchase an additional module 5 Slide the POFP into the vacant 5 drive bay and screw it tight to the bay s sides 6 Finally make sure that all connections and screws are tight close the computer cover plug in the power cord and switch on your computer EM o After the power on there will be an immediate signal at SPDIF OUT Check this by verifying that the optical output emits red light remove the protective cap This means the hardware is installed correctly bravo If the optical output does not emit light after power on switch off the computer immediately Please check the cable connections inside the computer once more There is a green power LED on top of the PO7P which may give you a hint if it does not light while the computer is running the power supply is not connected Using the Analog AUX IN These connetors are determined for analog stereo devices like tape records CD Cinch connectors are widely spread They allows to connect a lot of different audio devices to your sound card via a simple cable You can controll the AUX IN recording level with the standard software audio mixer 6 S PDI
8. d place is below your DVD or CD ROM drive so dangling cables will not restrict access to the drive tray Remove the bay s front cover 3 Locate the sound card The SBAudigy Live and the CMI8738 cards are PCI cards In tower casings this usually means that they are installed upside down In most cases you will have to remove the card to reach the used connectors Up to now there are two supported SBAudigy Live extension pin outs plus the CMI8738 sound card standard pin out The POFP s module cable has got a multi adapter for the different sound cards SB Audigy SB Ave old VALUE CM 8738 sound cards e g Zoltriz 8C 8738 AudiaE A511 POFP SIPDIF front panel User Manual N 2 R The following pictures show how the small adapter is plugged to the sound card In most cases you have to remove the card to reach the used pin connectors DLE utre E SFe m a a Te rt i mum mt o T Mi pP g SB Audigy Live Player 1024 Value 40 pin old SB Live Value with 12pin connactor CMI 8731 sound card e g AudioExcel 0511 During the re installation of the sound card you should take care that there is some space left between the multi adapter and the next PCI AGP card Although the adapter s back is coated with insulating material you should not risk a short circuit o 4 Pass the following cable ends from the inside of the casing through t
9. ect the volume at the recording mixer to make sure the signal is not overdriven e The SPDIF OUT signal should be on all the time It is equivalent to the analog line out of the SBAudigy Live Nevertheless it might be necessary to check Digital Output Only as the same resource is also used for the center speaker f MIXER Play Control Other Advanced Ex On Off Controls Please note that every adjustment e g tremble or bass adjustment has an influence on the digital line out SB Audigy Live and Sample Rate questions The Soundblaster Audigy Live Value is able to work on all popular sample rates at the input But note that every signal going into the card will be converted to internal 48 kHz refering to actual drivers So the output sample rate is fixed at 48 kHz for SB Live For SB Audigy the output sample rate can be set to 44 1 48 or 96 kHz 10 POFP SIPDIF front panel User Manual For SB Live the reasons have been given by a Creative scientist at the Soundblaster Live home page hitp www sblive com extract Dave Rossum Chief Scientist It s important to remember that the Sound Blaster Live is much more than just a wavetable synthesizer or a CD playback device At its heart is the EMU10K1 e ects engine a powerful DSP performing among other things mixing of all the various functions in the digital domain To mix digital audio signals they must all be at EXACTLY the same sample rate even deviations of
10. he opened 514 drive bay to connect them to the POFP before you install it 14 pin connector of the module cable connect it to the X1 port of your POFP the black end of the included grey analog audio cable plug it to X4 The orientation of the red and the white lead will swap the two analog channels left lt gt right connect the other end to the AUX IN connector of the sound card E i TORAH TOTALS AR amp FAH IN A Hida 4 RS T T L a mE 5n ai 3 d t m 34h m eq ai lan E ia OM Es n ib B Ang pal i H 3 suis TIE Ug rer id M rests oa IMHIBTTETILIIETIIIIIT e rz Lele me 031095 i d EC pr E T E OC AUX IN connector power supply via to SB Audigy Live to sound card analog in incl splitter cable or CMI8738 sound card S PDIF front panel User Manual gt the smaller end of the included power splitter cable Y cable which has been connected to the your computer s power supply unit inside the casing plug it to the connector of the POFP optional the grey 14 pin optiCompo ribbon cable if you like to connect an EM additional digital extension module like a POAB or POCZAD plug it to the X2 connector of the POP Optional Digital Extension via the POFP A second digital i o module e g a POAB or POCAB can be connected via the POFP s 14 pin port X2 all digital sign
11. n t possibly know our EXACT 48 kHz rate and so its sample rate must be normalized to ours even if the deviation is very small This is a fact of digital mixing Once again those most familiar with practices in older digital studios will ask why we didn t make accommodations for supply and receiving AES black synchronization information to eliminate the necessity of sample rate conversion The reason is that studio synch is simply too complex an issue for most consumers to grasp sample rate conversion at least by E mu sounds great and makes the digital patch cord behave just like an analog one POFP S PDIF front panel User Manual Specifications supply current approx 50mA operating voltage 5V supplied by SB Audigy Live operating temperature approx 5 C 60 C optical in out TOS ink 670nm coaxial input cinch RCA connector 0 5 5 Vp coaxial output cinch RCA connector 1 6 Vop sample rate in 2 05 MBit s 32 kHz e g DSR 2 82 MBit s 44 1 kHz e g CD 3 07 MBit s 48 kHz e g DAT sample rate out 3 07 MBit s 48 kHz e g DAT Digital IN select coaxial digital signal OMEN RSS AUC optical digital signal TOSlink Cinch RCA
12. team Warning e Do not eat or pulverize any of the components of the PO7 because some components contain toxic material e We not liable for any damages caused by improper use of the POFP or it s components kkkkkkkkkkkkkkkkkkkk Information in this manual is subject to change without notice Trademark Acknowledgement All trademarks referred herein are the property of their respective owners POFP SIPDIF front panel User Manual Selecting the digital output signal source The POFP uses the digital signals as the sound card interfaces them Using the SB Audigy Live you have the possibility to select the front or rear SPDIF channel to be passed to the output by setting the jumper front stereo channel LF RF SPDIFO O signal for 2 and 4 speaker mode CMI8738 standard SPDIFO 1 center and subwoofer channel SPDIFOZ2 mix of front and rear stereo channel rear stereo channel LR xRR SPDIFO S only active in 4 speaker mode Default is SPDIFO O use also for CMI8738 Installing the PO7 1 Switch off your computer unplug the power cord form the outlet and remove the computer cover Make sure to avoid electrostatical chargings caused by clothes carpets etc e by touching a metal plate on you system before you remove the power cord This will ground yourself and discharge static electricity otatic electricity can destroy electronic components 2 Choose a free 577 drive bay to install the O7 a goo

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