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Chapter 2: 192 I/O Overview

11

Legacy and Expansion Peripheral Port 
Limitations

Because both the Legacy port and the Expansion 
port use channels 17–32, you can only use one 
at a time.

The Legacy port is not available in any session in 
which the sample rate is set for higher than 
48 kHz.

Accessory Port

This port is not supported.

Using Input and Output Trims 

Input Trims

The Input Trims below the two DB–25 connec-
tors on the Analog In card are used to store two 
different calibration settings (A and B) for each 
channel. 

These two adjustable Input Trims are for pre-
cisely calibrating and switching between a 
choice of independently adjustable headroom 
settings for each channel. You can adjust each 
Input Trim by hand with a small screwdriver. 

For example, you could use the A trims for the 
+4 dBu port, and use the B trims for –10. Or, use 
A and B to maintain two different trims for any 
signal input port (+4 dBu or –10 dB(V)). 

If you are not using the –10 dB(V) input connec-
tor, the B trims can be used to store an alternate 
set of headroom values for the +4 dBu inputs. 
Once set, you can switch between the different 
trim headroom values for the same input level 
from within Pro Tools.

About Input Operating Levels

Check the owner’s manual for your mixer, 
power amplifier or effects processor to see if it 
operates more comfortably at line level, in 
which case consider setting the 192 I/O  to oper-
ate at –10 dB(V) line levels and/or adjusting the 
Input Trims.

Consider the following when connecting a 
mixer:

‹

If your mixer cannot handle more than 1.5V 

(RMS) inputs at +4 dBu, then you should set the 
192 I/O  to operate at –10 dB(V) line level.

‹

If your mixer can handle up to 15.5V (RMS) 

inputs, or has pads or attenuators on its inputs, 
then you can use the +4 dBu setting on the 
192 I/O.

‹

192 I/O is calibrated for 18 dB headroom at 

the +4 dBu setting.

Most manuals contain device input specifica-
tions, including whether or not there are pads or 
attenuators. Consult the manufacturer’s docu-
mentation for your mixer or power amplifier for 
further information.

Selecting Analog Input Operating 
Levels

If you want to switch the input levels of the 
192 I/O from +4 dBu to –10 dB(V), you can ac-
cess these parameters on a channel-by-channel 
basis in the Hardware Setup dialog. For instruc-
tions, see the 

Pro Tools|HD Getting Started Guide

 

Содержание 192 I

Страница 1: ...192 I O ...

Страница 2: ...ments or suggestions regarding our documentation email techpubs digidesign com Warning This product contains chemicals including lead known to the State of California to cause cancer and birth defects or other reproductive harm Wash hands after handling Communications Safety Regulation Information Compliance Statement The model 192 I O complies with the following standards regulating interference ...

Страница 3: ...e room on either side for the unit fans Do not block the sides of the units where fans are or disconnect the fan If the units are racked up in a case remove all lids doors or covers before operating the units Failure to do so can result in the units overheating very quickly which can permanently damage them Disposal of Waste Equipment by Users in the European Union This symbol on the product or it...

Страница 4: ......

Страница 5: ...k Panel 7 Using Input and Output Trims 11 Appendix A Adding or Removing I O Cards 13 Installing an I O Card 13 Removing an I O Card 16 Appendix B Pinout Diagrams for the DB 25 Connectors 19 Analog Output DB 25 19 Analog Input 4 dBu DB 25 19 Analog Input 10dB V DB 25 20 AES EBU DB 25 20 TDIF DB 25 21 Appendix C 192 I O Calibration Mode Instructions 23 About Calibration 23 Calibrating the 192 I O 24...

Страница 6: ...192 I O Guide vi ...

Страница 7: ...z on all chan nels and of up to 192 kHz on four chan nels simultaneously Two channel AES EBU I O supports sample rates of up to 96 kHz Sixteen channels of Optical I O through two pairs of Lightpipe ADAT connectors one pair of optical ports can be switched to two channels of optical S PDIF I O Two 24 bit capable S PDIF I O supporting sample rates of up to 96 kHz Real time sample rate conversion on ...

Страница 8: ... using Pro Tools software to route your interface inputs and outputs to Pro Tools inputs and out puts see the Pro Tools Reference Guide Conventions Used in This Guide Digidesign guides use the following conven tions to indicate menu choices and key com mands The following symbols are used to highlight im portant information Convention Action File Save Choose Save from the File menu Control N Hold ...

Страница 9: ...se the Compatibility documents for system requirements search the online An swerbase join the worldwide Pro Tools commu nity on the Digidesign User Conference Training and Education Become a certified Pro Tools Operator or Expert study on your own using courses available online or find out how you can learn in a classroom setting at a certified Pro Tools Training Center Products and Developers Lea...

Страница 10: ...192 I O Guide 4 ...

Страница 11: ...g is orange the unit has power but the computer it is con nected to is shut down Sample Rate These LEDs display the current sample rate of the 192 I O internal crystal oscillator 44 1 kHz 48 kHz 88 2 kHz 96 kHz 176 4 kHz or 192 kHz The sample rate can be set in Pro Tools when you create a new session or in the Hard ware Setup or Playback Engine dialogs if no ses sion is open See the Pro Tools HD G...

Страница 12: ...etup dialog or if no valid clock source is detected at this port 192 I O will switch to INT and the DIG LED will flash LOOP Loop Master Indicates that the 192 I O is slaving to another Pro Tools HD I O through Loop Sync You do not set LOOP mode any where in the software This is done automati cally when you choose another peripheral as LOOP MASTER EXT External Indicates that the 192 I O is us ing t...

Страница 13: ...s section contains connectors for analog au dio input with 24 bit 192 kHz A D converters Input is provided through two discrete DB 25 connectors You can connect sources at both op erating levels and choose between them from within Pro Tools The two inputs are 4 dBu Balanced Provides eight balanced input channels at 4 dBu nominal operating levels 10 dB V Balanced Provides eight balanced in put chan...

Страница 14: ...and supports 192 kHz sample rates in dual wire mode Dual wire mode uses two of 192 I O s physical I O channels of AES EBU I O to carry each single stream of 192 kHz audio Therefore only four simultaneous channels of AES EBU I O are available at 192 kHz TDIF DB 25 connectors for eight channels of TDIF input and output Conforms to standard eight channel TDIF pinouts For more information see Appendix...

Страница 15: ...PDIF digital data stream S PDIF supports up to 24 bit audio at sample rates up to 96 kHz Optical ADAT Encl These are Optical ports that accept up to eight channels of Optical ADAT input and output or two channels stereo optical S PDIF input and output Optical ADAT mode supports sam ple rates up to 48 kHz In TOS Link mode sup ports two channel Optical input and output at sample rates up to 96 kHz T...

Страница 16: ...Pro Tools HD card 25 7 62m 50 15 25m the maximum length sup ported for 192 kHz sessions sold sepa rately 100 30 5m the maximum length sup ported by 96 kHz sessions sold separately Expansion DigiLink The Expansion port lets you connect an addi tional Pro Tools HD audio interface to the 192 I O The Expansion port passes channels 17 32 to the secondary or expansion I O Legacy Port This port lets you ...

Страница 17: ...Bu inputs Once set you can switch between the different trim headroom values for the same input level from within Pro Tools About Input Operating Levels Check the owner s manual for your mixer power amplifier or effects processor to see if it operates more comfortably at line level in which case consider setting the 192 I O to oper ate at 10 dB V line levels and or adjusting the Input Trims Consid...

Страница 18: ...ettings and Sample Rate Conversion The 192 I O lets you specify the digital format for input and apply sample rate conversion To configure digital formats and sample rate conversion 1 Launch Pro Tools 2 Choose Setup Hardware 3 Click the Digital tab and select Input Format AES EBU ADAT or TDIF 4 Enable real time Sample Rate Conversion by selecting channel pairs 1 2 3 4 5 6 7 8 in the SR Conversion ...

Страница 19: ...can be removed if needed for servicing or to swap out cards in the fourth bay for different studio setups If you re move a single card from the 192 I O the unit will continue to function while the audio card is being serviced See Removing an I O Card on page 16 Installing an I O Card Installing an optional card in the expansion bay To insert or replace a card 1 Power off and disconnect the 192 I O...

Страница 20: ...de of the bay 8 Gently push the card back into the bay lifting slightly to keep components underneath the card from touching the back panel 9 Attach the card s faceplate onto the back panel surface of the 192 I O with the same screws you removed from the empty bay cover Removing the cover on the empty bay Locating guide rails along sides of empty bay Guide Rails guide rails Placing the edge of the...

Страница 21: ...the power LED should turn orange 17 Start up the computer 18 When you boot up the computer the power ring should turn from orange to green or If it doesn t see Troubleshooting on page 16 19 If the ring turns green and the computer boots properly launch Pro Tools 20 Open the Hardware Setup dialog to confirm that the new card is recognized If you installed a 192 Digital card you should see a new tab...

Страница 22: ...igidesign for repair The modular nature of the Pro Tools HD system allows you to simply return the specific card in stead of the entire 192 I O Your Pro Tools HD system will continue to function while missing a single card It will not function if more than one of the factory installed cards is missing or if the wrong card is in detected in any of the first three bays To remove an I O card from the...

Страница 23: ...e by greying out the removed in puts and outputs and reverting them to their default assignments The remaining inputs and outputs will function normally For example if you remove the Analog Input card the Analog Input tab will disappear from the Hardware Setup dialog You will lose the configuration of any pairs of inputs or outputs that were assigned to the card being removed When you pull a card ...

Страница 24: ...192 I O Guide 18 ...

Страница 25: ...H6_HOT CH6_GND CH5_GND CH5_HOT CH5_COLD CH8_GND NC_1 CH1_GND CH2_HOT CH8_HOT MH1 1 8 7 6 5 4 3 2 27 12 24 11 23 22 21 9 8 7 20 14 3 15 16 17 4 5 19 18 6 2 13 25 10 1 26 4 Analog Outputs MH2 CH1_COLD CH1_HOT CH2_GND CH2_COLD CH3_GND CH3_HOT CH3_COLD CH4_GND CH4_HOT CH4_COLD CH8_COLD CH7_COLD CH7_HOT CH7_GND CH6_COLD CH6_HOT CH6_GND CH5_GND CH5_HOT CH5_COLD CH8_GND NC_1 CH1_GND CH2_HOT CH8_HOT MH1 1...

Страница 26: ... 20 14 3 15 16 17 4 5 19 18 6 2 13 25 10 1 26 MH2 CH12_RCV_COLD CH12_RCV_HOT CH34_RCV_GND CH34_RCV_COLD CH56_RCV_GND CH56_RCV_HOT CH56_RCV_COLD CH78_RCV_GND CH78_RCV_HOT CH78_RCV_COLD CH78_XMT_COLD CH56_XMT_COLD CH56_XMT_HOT CH56_XMT_GND CH34_XMT_COLD CH34_XMT_HOT CH34_XMT_GND CH12_XMT_GND CH12_XMT_HOT CH12_XMT_COLD CH78_XMT_GND NC_1 CH12_RCV_GND CH34_RCV_HOT CH78_XMT_HOT MH1 XMT XMT XMT 7 8 5 6 3...

Страница 27: ...A GND4 GND6 GND5 CH34_XMT_DATA XMT_FS1 RCV_FS0 RCV_FS1 XMT_LRCK RCV_LRCK RCV_EMPHASIS CH56_XMT_DATA GND7 XMT_FS0 CH34_RCV_DATA GND2 XMT_EMPHASIS MH1 DB25F_RA_TDIF GND1 CH78_XMT_DATA GND8 GND9 7 8 CLK CTRL 1 2 3 4 5 6 1 2 3 4 5 6 RCV DATA XMT DATA RCV CLK CTRL XMT 7 8 GND_C 27 13 23 11 1 10 22 15 14 2 19 20 8 5 9 21 3 16 6 12 24 18 26 25 4 17 7 NC NC NC FB30 FB31 ...

Страница 28: ...192 I O Guide 22 ...

Страница 29: ...al input and output levels Instead with an interface such as the 192 I O the meters are calibrated in decibels below peak or dBFS dB full scale digital clip ping level Headroom The concept of headroom is slightly different for analog and digital devices Analog Most analog devices allow for a certain amount of headroom above 0 VU If you send a signal above 0 VU to an analog recorder you still have ...

Страница 30: ...ion session was created You can create a ses sion from scratch or open the calibration tem plate and walk through these instructions To calibrate the 192 I O Outputs 1 Launch Pro Tools and create a new session 2 Choose Setup Preferences and click Opera tion 3 Enter the desired Calibration Reference Level value in dB A level of 18 dB is typical It is not necessary to type a minus sign here 4 Click ...

Страница 31: ... be found at electronic supply stores To calibrate the 192 I O inputs 1 Connect the 192 I O outputs to a bank of 192 I O inputs by doing either of the following Use a DB 25 to DB 25 straight through ca ble Interconnect the XLR ends of DB 25 to XLR together 2 In Pro Tools select Options Calibration Mode The names of all uncalibrated tracks begin to flash In addition the track volume indicator of ea...

Страница 32: ... you are 1 5 dB above your headroom value of 18 dB 4 When you have finished deselect Options Calibration Mode Calibrating a System with Both 192 I O and 96 I O Audio Interfaces The A trim on the192 I O is factory preset with 18 dB of headroom in its 4 dB line level operating mode The 96 I O however is fixed at 14 dB of headroom and its inputs are not adjust able When setting up a 96 I O particular...

Страница 33: ...BV DB 25 Pinout Diagram 20 analog monitoring 1 Analog Out card 7 Analog Output 8 DB 25 Pinout Diagram 19 Analog Output DB 25 19 C calibrate 24 calibrating the 888 24 I O 24 calibration 11 Cards I O 7 cards Analog In 7 Analog Out 7 Digital I O 7 removal 16 clipping 23 Clock Source 10 connecting a mixer 11 D DB 25 connectors 7 DIG Digital mode 6 DigiLink 10 cable 10 Length Specifications 10 digital ...

Страница 34: ...rims 7 11 inputs calibrating 24 Internal clock mode 6 INT 6 L LED ring 5 legacy peripheral port limitations 11 port 10 Lightpipe Optical port 9 line level 11 Loop Master 6 Master LED 6 mode 6 Loop Master LED 6 mode 6 Loop Sync 6 sample rates 9 M Meters 6 MIX series 10 O Optical ADAT 6 I O 9 Optical ADAT about Lightpipe compatible devices 9 Output Cards 7 Output Levels 12 Output Trims 8 12 outputs ...

Страница 35: ...12 conversion Optical ADAT 12 conversion TDIF and Optical ADAT 12 Session 6 Soft Clip limiter 12 and headroom 12 Sync Mode LEDs 6 synchronization 10 T TDIF 8 TDIF DB 25 Pinout Diagram 21 TOS Link Optical port and 9 Trims Input 8 Output 8 Troubleshooting 16 W word clock 6 10 ...

Страница 36: ...City CA 94014 3886 USA Tel 650 731 6300 Fax 650 731 6399 TECHNICAL SUPPORT USA Tel 650 731 6100 Fax 650 731 6384 PRODUCT INFORMATION USA Tel 800 333 2137 INTERNATIONAL OFFICES Visit the Digidesign website for contact information www digidesign com ...

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