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- Antex Electronics
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- SX-11
- User Manual
Antex Electronics SX-11 User Manual
Summary of SX-11
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1 sx-7 sx-9 sx-11 sx-12a sx-20 sx-22 sx-23e sx-26 digital audio adapter user's manual for dos and windows january 25, 1996 antex electronics corporation 16100 south figueroa street gardena, california 90248 9000-2347-7006.
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2 table of contents introduction..........................................................................4 about digital audio .............................................................4 minimum hardware recommended ................................7 adapter installation ............................
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3 figures figure 1: analog-to-digital conversion........................................5 figure 2: digital-to-analog conversion........................................6 figure 3: sx-12a, sx-20 connector locations ...........................8 figure 4: sx-7 connector locations .........................
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4 introduction the series 2 digital audio adapters are ibm at compatible add-on boards which convert high fidelity analog signals to digital data for storage to, and retrieval from, disk. The series 2 adapters sample two channels of audio from 6.25 khz to 50khz with 16 bit resolution. They incorpora...
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5 the number of these bits generated each second is a function of sampling rate. At a relatively low sampling rate of 8 khz (suitable for voice) far fewer code bits are produced each second than, for exam- ple, at the 44.1 khz sampling rate used for commercial compact disks. For a two-channel stereo...
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6 of figure 2. This signal is then passed through a low-pass filter, which removes the digital "switching noise." the end result, shown in the bottom half of figure 2 is an analog output signal whose waveshape is a very close approximation of the original analog input signal. The foregoing is a very...
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7 minimum hardware recommended Ÿ16 mhz 386-sx or compatible Ÿ28 msec average access hard disk Ÿ1:1 interleave hard disk controller Ÿmouse Ÿvga display adapter installation make sure the main power to your computer is off. You will need a full-size, 16 bit/at slot. If you are unfamiliar with the inte...
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8 sx-12a, sx-20 there are 5 external connections located on the front surface of the audio board's metal bracket (fig. 3). Audio input: line: rca jacks, 2vrms/+6dbv max (digital clipping), with an impedance pf 20 k ohms audio output: headphone: 1/4" stereo phone jack, 0.5 vrms into 8 ohms line: rca ...
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9 figure 4: sx-7 connector locations headphones db-9 balanced out unbalanced right unbalanced left sx-7 jp1 1 left right g nd pin assignment 1 gnd 2 3 nc 4 right out - 5 left out - 6 nc 7 nc 8 right out + 9 left out + db-9 female balanced analog i /o connector 1 2 3 4 5 6 7 8 9.
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10 audio output: line: unbalanced - rca jacks, 2vrms/+6dbv max (digital clipping), with an impedance of 470 ohms and a load impedance of > 10 k ohms balanced - nine pin d connector, -16 dbm maximum, with an impedance of 47 ohms and a load impedance of 600 ohms headphone: 1/4" stereo phone jack, 0.5 ...
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11 figure 5: sx-9 and 11 connector locations aes/ebu digital: 7 pin mini din jack. Professional aes/ebu: eiaj cp-340 type i / iec-958 pro or consumer s/pdif: eiaj cp-340 type ii / iec-958 consumer sx-22, sx-23e, sx-26 there are 5 external connectors located on the sx-22 audio board's metal mounting ...
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12 the sx-22 balanced analog i/o levels are specified in dbu, where 0 dbu is 0.775 vrms or 2.19vpp for a sinewave. If an i/o is connected as unbalanced then the level is 1/2 the balanced i/o. The adjustable level is referred to as trim. The following trim settings are available on the sx-22. Vdbu vr...
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13 headphone (sx-22, sx-23e & sx-26): 1/4" stereo phone jack, 0.5 vrms into 600 ohms or greater. Aes/ebu digital (sx-22, sx-23e & sx-26): 7 pin mini din jack. Professional aes/ebu: eiaj cp-340 type i / iec-958 pro or consumer s/pdif: eiaj cp-340 type ii / iec-958 consumer headphones adapter # jumper...
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14 sx22 balanced i/o to xlr 1 2 3 4 5 6 7 8 9 balanced in - xlr male shell, female pins left right 1 - 2 + 3 gnd right balanced out - xlr female shell, male pins 1 1 1 + 3 left - 2 - 2 + 3 - 2 + 3 sx22 unbalanced i/o to rca 1 2 3 4 5 6 7 8 9 left unbalanced out - female rca right left right unbalanc...
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15 7 pin mini din female 1 3 5 2 4 6 7 digital i/o header - jp7 n n n n n n n n 1 3 5 7 2 4 6 8 (nc) pin assignment 1 ground 2 in - aes/ebu - 3 out - aes/ebu+ or s/pdif+ 4 in - aes/ebu + 5 out - aes/ebu - or s/pdif- 6 in - s/pdif+ 7 aes/spdif sense - this line should be connected to ground for aes/e...
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16 driver installation disks disk 1. The "windows drivers" disk contains windows drivers and applications (note: the dos 3.2/windows 2.0 drivers continue to come on a single disk): · antexwav.Drv - windows wave driver for sx3, sx5e, sx7, sx9, sx11, sx12a, sx20, sx22, sx23e, sx26, sx33, sx33e, z1, z1...
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17 3. In program manager, click on file then run.. 4. Enter a:setup in the command line box, then press ok. 5. When the driver installation is complete, windows should restart automatically. If not, exit then restart windows manually. Windows driver configuration to change the adapter type, i/o addr...
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18 dos driver installation 1. Insert the drivers disk into your floppy drive (assumed to be a:) 2. Type a: 3. Type install driveletter:\path to copy all files from the disk to a subdirectory on your hard disk. Ex. Install c:\antex remember: when the windows driver installation is complete, windows s...
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19 using dos demonstration software on the enclosed disk is the demonstration software for the sx-7, sx-9, sx-11, sx-12a, sx-20, sx-22, sx-23e and sx-26 boards. Filenames are as follows: driver program sx25.Exe dos demonstration program adg.Exe to run the demonstration software: 1. Load the disk fil...
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20 key commands: q-quit quits the demo program and returns to dos. C-channels allows choice of channel configuration. Mono-single channel record/play. Stereo-dual channel record/play. T-format the format for encoding or decoding audio data: pcm16 - 16 bit pulse code modulation, uncompressed. Pcm8 - ...
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21 cdib - compact disk interactive level b compression, cd-rom xa compatible. Cdic - compact disk interactive level c compression, cd-rom xa compatible. Dolby - dolby ac-2 compression. Mpeg - iso/mpeg-1, layer i/ii. Refer to "iso/mpeg-1 bitrates & format extensions " for more information. A-law - cc...
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22 to adjust the playback volume, click the mouse over the or > symbol on the screen. Lowers the volume from 0 to -30 db in one db increments. > raises the volume from -30 to 0 db in one db increments. Note: 0 db = full volume. Record/play level db bargraph displaying the volume of each channel. S-s...
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23 problems running the demo symptom: the screen appears to be frozen. Solutions: 1. Verify that the driver is loaded. 2. Make sure you type the correct i/o and interrupt locations on the command line of adg. 3. Make sure to use the hex value for the i/o. 4. Make sure syntax of adg line is correct. ...
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24 using windows demonstration software figure 10: the antex demo window. The antex demo program allows basic recording and playback of .Wav files in any of the compression formats available on the antex audio board you have installed in your system. Sample rate this list box selects specific sample...
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25 channels: these buttons select mono or stereo recording, and displays the current files number of channels. Vu meters: the vu meters show the relative signal of the current file that is being recorded or played. Wave device: if your computer has more than one antex audio board, this drop down lis...
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26 record/stop: once a file has been selected, pressing the record button will start the recording. During recording, this button changes to "stop". If a file has not been selected the "save as" dialog box appears and allows selection of a specific file to record into. Volume: these controls allow c...
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27 antex mixer the antex mixer allows you to control the volume of the inputs and outputs on the antex digital audio cards. The mixer is also the way you route audio sources to either the record bus, for recording to hard disk, or to the play bus, which diverts signals to the line outputs. Features ...
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28 play mode (feedthrough) the play bus is a composite mix of all audio inputs with their play buttons pressed. This mix is routed to the output jacks. Note: you must toggle the button to rec if you want to record audio to the hard disk. Mixer devices line in jack. Wave digital audio playback. Note:...
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29 utilizing digital audio compression under windows at this point in time microsoft is in the early stages of supporting various compression formats for waveform audio under windows. An update to the multimedia standards was released that defines the methods of passing data about compressed files a...
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30 audio adapter compression capabilities the antex series 2 and series 3 product line contains audio adapters with a range of signal processing capability. The following table itemizes each product's record and playback functionality with respect to compression format. Product oki adpcm 8-bit pcm 1...
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31 iso/mpeg-1 bitrates & format extensions iso/mpeg supports several compression rates and encodes flags that describe the audio data. The flags and other options are selected by typing mpeg with[extensions] switches in the format text box of the dos demo. (the bitrates in the windows demo are selec...
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32 in the antex driver the bitrate is specified on a per-channel basis. Therefore, requesting 64 kbits/s and stereo will result in a 128 kbits/s compressed mpeg stream. Supported bitrates (per channel) and compression ratios are as follows: layer i 32 khz 44.1 khz 48 khz bitrate (kbits/s) compressio...