302 - User Guide and Technical Information
Contents
1. 3 Attenuate the input gain control push up trim while talk testing inputs so that signal indicates on both the 302 s level meter and the receiving recorder camera level meter Monitoring 1 Connect headphones to the headphone connector located on the input panel 2 Set the headphone source to ST to monitor stereo program Raise the headphone volume level to the desired level The 302 headphone output is capable of producing ear damaging levels Turn down levels before switching headphone sources 3 Monitor individual sources by moving the headphone selection switch to the 1 2 or 3 positions a v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Front Panel Descriptions 40 v xX 7 160 DO se L Al i Se 4 10 8 8 Br FTN POWER INT EXT IST 2 BTN TMS Pearrh Ji Ji L f Fader Primary control for adjusting the input level during operation Peak LED When illuminated indica2. Phantom and T powering are not interchangeable Use T powering only for T powered microphones The DYN dynamic position does not apply any voltage to the microphone input It is generally good practice to select the DYN position when microphone power is not required Phantom power can capacitively couple noise into the mic inputs with poor mic cables Do not apply phantom power when using ribbon microphones improperly wired cables can permanently damage the microphone High Pass Filters 46 Each channel of the 302 has a two position high pass filter High pass or low cut low roll off filters are useful for removing excess low frequency energy in audio signals Wind noise is a common unwanted low frequency signal and a high pass filter is effective for reducing wind noise For most audio applications engaging the high pass filter is beneficial since little usable audio information exists below 80 Hz especially for speech reproduction The 302 s high pass filters feature a 12 dB octave slope with either 80 Hz or 160 Hz corner 3 dB frequencies The 160 Hz settings is used when aggressive filtering is required The 302 s high pass circuit is unique because of its placement before any electronic amplification Most mixer s high pass circuits are placed after the mic preamp where all of the high energy low frequency signals get amplified Because the 302 s circuit cuts low frequency signals before amplifying hig
3. the 302 s Tone Oscillator attenuates the headphone output by 20 dB to protect the operator s ears This feature can be defeated in the Setup Menu Left Right Verification Pressing the Battery Check button when the tone oscillator is active sets the left output level to cycle between 0 and 20 dB This is helpful to verify proper left and right channel connection Turning off the tone oscillator or pressing the Battery Check button again stops the output cycling Slate Microphone The Slate Microphone is used to audibly notate scenes at the mixer location Its audio performance is not suitable for critical recording applications it should only be used for documenting scenes to tape At factory default the slate mic uses the momentary switch position In the Setup Menu a one second 400 Hz tone can be set to precede the Slate Microphone The Slate Microphone signal is sent to all outputs In the Setup Menu the Slate Microphone can be disabled altogether to prevent unintentional activation Additionally the switch assignments of Slate and Tone can be reversed for user convenience SOUNDS DEVICES a15 302 User Guide and Technical Information The Meter The 302 s meter provides a great deal of audio signal information to the operator The ability to view multiple ballistics peak levels PPM average levels VU or a combination of both is unique to Sound Devices LED based meters The 302 meters do not share the inherent limit
4. OR OTHER SIMILAR AUDIO OR VIDEO DEFECTS ARISING FROM RELATED TO OR OTHERWISE ATTRIBUTABLE TO THE PRODUCTS OR THE END USER S USE OR OPERATION THEREOF REGARDLESS OF WHETHER SUCH DAMAGES ARE CLAIMED UNDER CONTRACT TORT OR ANY OTHER THEORY CONSEQUENTIAL DAMAGES FOR WHICH SOUND DEVICES SHALL NOT BE LIABLE SHALL INCLUDE WITH OUT LIMITATION LOST PROFITS PENALTIES DELAY DAMAGES LIQUIDATED DAMAGES AND OTHER DAMAGES AND LIABILI TIES WHICH END USER SHALL BE OBLIGATED TO PAY OR WHICH END USER OR ANY OTHER PARTY MAY INCUR RELATED TO OR ARISING OUT OF ITS CONTRACTS WITH ITS CUSTOMERS OR OTHER THIRD PARTIES NOTWITHSTANDING AND WITHOUT LIMITING THE FOREGOING IN NO EVENT SHALL SOUND DEVICES BE LIABLE FOR ANY AMOUNT OF DAMAGES IN EXCESS OF AMOUNTS PAID BY THE END USER FOR THE PRODUCTS AS TO WHICH ANY LIABILITY HAS BEEN DETERMINED TO EXIST SOUND DEVICES AND END USER EXPRESSLY AGREE THAT THE PRICE FOR THE PRODUCTS WAS DETERMINED IN CONSID ERATION OF THE LIMITATION ON LIABILITY AND DAMAGES SET FORTH HEREIN AND SUCH LIMITATION HAS BEEN SPECIFI CALLY BARGAINED FOR AND CONSTITUTES AN AGREED ALLOCATION OF RISK WHICH SHALL SURVIVE THE DETERMINATION OF ANY COURT OF COMPETENT JURISDICTION THAT ANY REMEDY HEREIN FAILS OF ITS ESSENTIAL PURPOSE SOUND DEVICES fa 302 User Guide and Technical Information Quick Start Checklist Proper setup of sound sources and input devices is quick and easy with the 302 Follow the steps outlined below for basic intercon
5. Power supply batteries 2 4 6 V range internal batteries isolated floating Power supply external external DC input jack 5 18 V locking 4 pin Hirose connector pin 4 pin 1 use Hirose HR10 7P 4P DigiKey HR100 ND for locking mating DC connector Power Consumption 130 mA 4 5 V internal batteries idle no phantom 55 mA 12 V external DC idle no phantom Dimensions and Weight Size 47 mm x 214 mm x 114 mm H x W x D 1 8 x 8 4 x 4 5 Mass 0 85 kg 1 8 Ibs unpackaged with three alkaline AA batteries FCC Statement This device has been tested and found to comply with the limits for a class B digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation SOUNDS DEVICES 25 302 User Guide and Technical Information Accessories Several high value accessories are available for the 302 mixer including a carry case cables and power accessories For a full list of Sound Devices products and accessories visit our web site www sounddevices com products CS 3 Production case with high quality strap fo
6. in high SPL environments the Input Limiter s will activate to prevent the input signal from clipping Without the Input Limiters high signal conditions can overload the channel causing distortion Sound Devices recommends that the Input Limiters be engaged at all times Input Limiters do not effect audio below the set threshold just below clipping in any way There is no user selectable adjustments to the Input Limiter s threshold or its envelope When Input Channels 1 and 2 are linked as a stereo pair the Input Limiters also are linked and perform the same gain reduction equally across the channels LED af Each channel has an orange limiter LED which illuminates in proportion to the amount of limiting If the channel limiter LED illuminates substantially reduce the amount of gain applied to the channel by turning down the Gain trim pot Peak LED 7 Each channel has its own red Peak LED to indicate that the signal is 3 dB below the clipping level of the respective channel If the red Peak LED illuminates often reduce the amount of gain applied to the respective channel by turning down the Gain trim pot Polarity Reverse Input 2 Engaging the Polarity Reverse Switch inverts the polarity of Channel 2 Polarity reversal is often used to quickly reverse the stereo field in MS recording The normal position is OFF with polarity reversal occurring when the switch is in the position OFF Be advised that
7. off Power LED illuminates when power is on LED flashes when voltage reaches low limit See Powering MIC LINE Q sive 3 MIC LINE XLR Inputs Transformer balanced channel inputs Pin 1 ground pin 2 hot pin 3 cold Can be unbalanced by grounding pin 3 to pin 1 of the XLR connector Mic Line Channel Switch Selects the input level of the adjacent connector Mic level has 40 dB more gain than line level Phantom DYNamic T Power Selection Selects the microphone powering type of the adjacent input DYN position turns off all microphone powering Mic powering is selected per input NOTE Use T Powering only for T Powered microphones Phantom Voltage Selection Selects between 48 V or 12 V phantom voltage for all input channels The three position switch uses two positions for 12 V there is no difference between these positions Headphone Output 3 5 mm TRS stereo headphone output Can drive headphones from 8 to 2000 ohms to required monitoring levels 6 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Output Panel Descriptions k SET UP FEATURE SEE USER MANUAL FOR UNBALANCED XLR OUTPUT DO NOT GROUND PIN 3 XLR Master Outputs Active balanced outputs Pin 1 grou
8. the Setup Menu 20 Peak LED 10 Output Limiter Adjustment 21 Polarity Reverse Input 2 10 Advanced Gain Structure and Interconnection 22 Stereo Linking of Inputs 1 and 2 11 Full Scale Tone 22 Inputs 4 amp 5 11 Setup Menu V3 6 0ces cece e eee e eee 23 Outputs 1 0 cece eee eee eens 12 Specifications 0ccceceeeeeeeeaes 24 XLR Outputs 12 ACCOSSOFICS cece eceeeeeeeaeeeeeees 26 XLR Output Level 12 CE Declaration of Conformity 27 Tape Out Mix Output 13 Warranty and Technical Support 28 Output Limiters 13 Warranty 28 Headphone Monitoring 0ceeeeeeaee 13 FCC Statement 28 HP Monitor Selection 14 Headphone Level and Overload LED 14 Welcome The 302 is the essential portable mixer for production companies and camera operators wanting to take control of their audio The 302 is stunning in size flexibility control and performance it is the most compact and cost effective battery powered professional audio mixer in its class With important features to accommodate nearly any over the shoulder production the 302 can interface with any professional microphone wireless system or camera recorder input Its microphone inputs share the same superb circuitry of all Sound Devices field production tools With many of the controls of Sound Devices flagship 442 mixer the 302 has a complete feature set in a compact functional design All controls are accessible on its three main surfa
9. 0 Hz to 30 kHz 0 2 0 5 dB 1 dB 5 Hz and 50 kHz typical Equivalent Input Noise 126 dBu 128 dBV maximum 22 Hz to 22 kHz bandwidth flat filter trim control fully up THD Noise 0 007 typical 1 kHz 4 dBu at Line out 0 009 max 50 Hz to 20 kHz 18 dBu at Line out fader fully up Input Clipping Level 0 dBu minimum trim control fully down Gain Matching Common Mode Rejecti Ratio on 0 1 dB Mic In to Line Out 120 dB minimum at 80 Hz mic input 100 dB minimum at 10 kHz mic input High Pass Filters Switchable 80 Hz or 160 Hz 12 dB oct Mic Powering each XLR selectable Dynamic no power applied 12 V Phantom through 680 ohm resistors 10 mA per mic available 48 V Phantom through 6 8k resistors 10 mA per mic available 12 V T Power through 180 ohm resistors 10 mA per mic available Input Limiters 18 dBu threshold 20 1 limiting ratio 1 mS attack time 200 mS release time Otne Actual Type For use with Max Input Level XLR mic setting 2 5k transformer balanced lt 600 ohm mics 0 dBu 0 78 Vrms XLR line setting 16k transformer balanced lt 2k ohm outputs 40 dBu 80 Vrms Mix In 4 2k unbalanced stereo 302 442 Mix Out 1 8k 6 dBu 1 5 Vrms Return amp ch 4 5 10k unbalanced lt 2k ohm outputs 30 dBu Outputs Line Output Clipping Level 1 THD 20 dBu minimum 18 dBu minimum with 600 ohm load Output Noise 100 dBu 10
10. 2 dBV maximum 22 Hz to 22 kHz bandwidth flat filter master gain fully up faders fully down Output Limiters affects the Line Output and Tape Out threshold selectable from 4 dBu to 20 dBu 1 dB steps 20 1 limiting ratio 1 mS attack time 200 mS release time Impedance Ohms Actual Type For use with Max Output Level XLR factory Line setting 150 active balanced gt 600 ohm mics 20 dBu 7 8 Vrms XLR mic lowest setting 150 active balanced lt 2k ohm outputs 36 dBu Tape Out Mix Out TA3 1 8k unbalanced stereo gt 6k ohm inputs 6 dBu 1 5 Vrms Headphones 3 5 mm 200 unbalanced stereo 8 2k ohm phones 20 dBu 7 8 Vrms 24 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information XLR Input XLR Input RTN Mic Setting Line Setting ch 4 5 XLR Output factory line setting 75 dB 35 dB 20 dB XLR Output attenuated 0 16 dB 40 56 dB 25 41 dB 2 dB steps 2 dB steps 2 dB steps Tape Output TA3 type 61 dB 21 dB 6 dB Headphones 1 4 in and 3 5 mm 95 dB 55 dB 30 dB Metering LED Metering 40 segment 2 x 20 sunlight viewable Selectable Peak VU or Peak with or without peak hold VU ballistics Environmental Operation and Storage Operating 20 C to 60 C 0 to 95 relative humidity non condensing Storage 40 C to 85 C Power Internal Voltages 16 VDC bi polar regulated audio rails
11. B line tape levels then in 2 dB steps from 40 to 56 dB mic levels So if 40 dB of attenuation is too hot for a given device s mic input the attenuator could be set to 50 dB or more When interconnecting the 302 to any recording device the best way to set the level between them is to match the 302 s output clipping level with the recorder s input clipping level When this is done and the recording device s input gain controls are kept fixed two things will happen 1 The dynamic range of the recording is maximized 2 All level metering can be done via the 302 s meter The recorder s level meter can be ignored since the only way for the recorder to clip is for the 302 to clip The 302 s meters match the recorder s meters in that the clip points match Because most recorder s meter ballistics and scale are different it is impossible to make the 302 meter exactly match a given recorder s meter However this is irrelevant if the clip levels match Full Scale Tone The following information is intended for users with advanced knowledge of interconnection and gain structure To facilitate matching the clipping levels of the 302 s output to the recorder s clip level the 302 includes a full scale tone output function Full scale is the same as clipping level To activate this full scale tone turn on the tone switch while in the Setup Menu 30 position Be extremely careful when doing this as a full sc
12. N 7 X 60 QO L sO a o ite MIX Ol Pail N p MAN T R LINE wic K SET UP FEATURE SEE USER MANUAL FOR UNBALANCED XLR OUTPUT DO NOT O PIN S28 O L Q O LE ae CHS Lo sy Link two 302 mixers together for higher input channel counts by connecting the Tape Out Mix Out of 302A to the Mix In of 302B The Stereo Output program of 302A is sent directly to the Stereo Output program of 302B To add inputs to the 302 an additional mixer can be connected linked into its Mix In connection The unbalanced Mix In connection is directly compatible with Sound Devices MixPre 302 and 442 mixers A simple connection between those mixer s Mix Out Tape Out and the 302 Mix In adds their input channel to the 302 s output bus The unit connected via the Mix In will contain all inputs When linking with a 442 a system of seven microphone inputs is achieved Generally when linking to a 442 the 442 is used as the master linking with the 302 s Mix Out to the 442 s Mix In At the 442 outputs all seven inputs appear Sound Device XL 1B accessory cable can be used to link multiple 302 mixers or 302 and 442 mixers Sound Devices XL 3 accessory cable can be used to link a MixPre to the 302 for a five input system Link cables must be wired to short pin 1 to connector shell in order to open the Mix In connection Powering The 302 can be powered from either internal batte
13. SOUNDS DEVICES ee 2 mri Sy Fx ASNA OLUTO y wnat Nuras ange 0 ts J S mn 3 A a 302 Compact Production Mixer User Guide and Technical Information Sound Devices LLC E7556 State Rd 23 33 Reedsburg WI USA 1 608 524 0625 fax 1 608 524 0655 Toll Free 800 505 0625 www sounddevices com support sounddevices com 302 User Guide and Technical Information Table of Contents Limitation of Liability ccc cece eens 3 Tone Oscillator Slate Microphone 15 Quick Start Checklist cccseeeeeaee 4 Tone Oscillator 15 Powering the 302 4 Slate Microphone 15 Interconnection 4 The Meler si ccricsicserrirerisoniansissas 16 Setting Output Gain Structure 4 Source 16 Setting Input Levels 4 Scale 16 Monitoring 4 IRT Scale Compliance 16 Front Panel Descriptions 0seeeeeee 5 Ballistics 16 Input Panel Descriptions 0 eeeeeee 6 Ballistics Lock 17 Output Panel Descriptions 055 7 Illumination Intensity 17 INPUTS c2sccavaiinenceravatande KENE ERENS 8 Mixer Linking 00s cece eee eee eee 18 Mic Line Level Selection 8 Powering 0 s ccc e eee eee eee eee 18 Gain Trim 8 Power Switch and LED 18 Channel Fader 8 Internal Batteries 19 Phantom and T Microphone Powering 9 External DC Sources 19 High Pass Filters 9 Power Metering 19 Pan Switches 10 Power Consumption 19 Input Limiters 10 The Setup Menu 0c cece eee e anes 20 LED 10 Entering
14. ale tone is extremely loud and can hurt the operator s ears Make sure to turn down the headphone level and the level going to any amplifiers etc from the 302 The advanced way to set gain structure is as follows Connect 302 s XLR outputs to the recording device Enter Setup Menu see The Setup Menu Turn down headphones and any amplifiers connected to the 302 s other outputs Turn on the tone oscillator via its switch Turn the recording device s input gain control to its detented point or half way if no detent Oy UI oe Ge a Adjust the 302 s output level via the up down buttons until the recorder is just shy of clipping as indicated on its meter 7 If the 302 s Output level is at 0 dB and the recorder is not to its clip level increase the recorder s gain control until it is to the clip level 8 Fix the recorder s gain controls with tape so that they do not get bumped 9 Exit the 302 s Setup Menu by pressing the PK VU switch until the startup sequence happens Note The Setup Menu must be exited in this manner or else the setting will not be saved 10 It is recommended that the 302 s limiters be turned on at all times as they will not activate until just before clipping Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Setup Menu v 3 6 Below is the chart of setups for the 302 See Setup Me
15. an audible pop occurs when the polarity switch changes states 10 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Stereo Linking of Inputs 1 and 2 Stereo linking allows Inputs 1 and 2 to be controlled as a single stereo input This is useful when stereo microphones or stereo line level signals are used with the 302 Stereo linking allows the user to control the overall signal of both inputs with a single fader There are two modes of operation for stereo linking X Y link and MS stereo Stereo linking is activated in the Setup Menu X Y Stereo Link Inputs 1 and 2 can be linked as a stereo pair to simplify control when using stereo microphones X Y stereo linking is set in the Setup Menu When in X Y stereo link operation Inputs 1 and 2 Pan switches continue to control the signal routing for each respective channel Channel 2 s Fader controls the overall level of the stereo pair Input 1 and 2 s Gain trim pots and High Pass Filters continue to act independently of each other When linked Channel 1 and 2 s Input Limiters are also linked MS Stereo Linking When MS stereo linking is selected in the Setup Menu Inputs 1 and 2 are linked as an MS Mid Side stereo pair MS is a popular stereo configuration because of its good spatial placement mono compatibility and surround compatibility The 302 s MS matrix us
16. anned between the left and right output bus making it easy to use the 302 in either stereo or dual mono operations Because dialog is often recorded in mono each output connector can be used to feed a separate camera or recorder The 302 s Master XLR Outputs and Tape Outputs share the same program content There is no master level control on the 302 The master is factory set to unity gain or 0 dB XLR Outputs The two XLR outputs are active balanced connections each capable of driving long lines These connections can be used as either balanced or unbalanced When unbalancing use pin 2 for and pin 1 for ground float leave open pin 3 XLR Output Level The XLR Output Level is adjusted in the Setup Menu there is no external Mic Line level switch See Setup Menu for details From the factory the 302 is set for Line Level 0 dB outputs The Output Attenuation LED adjacent to the XLR Outputs indicates if the XLR Outputs are set to any level other than Line Level L LINE mic R LINE mic Rs N If the Output Attenuation 4 Z LED is illuminated the XLR AY Output Level is set to below Line Level Line Level or Mic Level or somewhere in between The XLR Output Level can be attenuated anywhere from a Line level 0 dB signal to low Mic level 56 dB signal See Setup Menu for adjustment Both the Left and Right XLR Outputs are adjusted simultaneously the Left and Right Outputs cannot be attenuated indepen
17. ations of LCD and mechanical meters LCD based meters can have sluggish indications in cold temperature Mechanical meters can be fragile and not ideal for field use The 302 meters share the same technology and software programmability used in Sound Devices larger 442 field mixers and on the 7 Series digital recorders Source The meter can display levels of the output buses the PFL levels or RTN Input levels Default operation is always the output bus except when PFL s are selected from the Headphone Selection Switch This operation can be modified in the Setup Menu 6 4 2 0 EAA O 772 omnes a Press to change LED brightness Scale When viewing peak information on the meter its scale is calibrated in peak reading dBu When viewing VU Volume Units information its scale corresponds to VU units Unlike other analog mixers the 302 is calibrated with its 0 VU reference at 0 dBu not 4 dBu If you primarily interconnect with analog video cameras you may want to change the 0 VU reference to 4 dBu in the Setup Menu The 302 s scale is designed for digital recording devices providing maximum information between 30 dBu to 0 dBu which is where typical peaks occur 50 to 20 dBFS This allows the user to record with a full 12 to 20 dB of headroom while in the fine resolution green colored part of the meter Additionally the meter color changes to orange at 0 dBu and red at 8 dBu These color changes corr
18. brightness control changes the threshold by 1 dB Three possible LED indications show threhold value e Single solid LED actual value indicates threshold e Flashing LED next to a solid LED indicates that the threshold is one dB above or below the solid LED value e Two solid LEDs threshold value is even number value between the two indicated values Two examples are shown below a setting of 10 dBu and 11 dBu thresholds 4 8 12 16 29 4 8 12 16 29 both 8 and 12 LEDs solid 8 flashing and 12 solid indicates indicates 10 dBu limiter 11 dBu limiter threshold threshold SOUNDS DEVICES a 302 User Guide and Technical Information Advanced Gain Structure and Interconnection The 302 s unique output attenuator circuit is adjusted in the Setup Menu This can be thought of as a master gain control which comes after the 302 s output meter This circuit allows the user to match the 302 s output level to any recording device When properly set the dynamic range of the system is maximized and the 302 s meters will match the recorder s meters For simple interconnection the following three setting are identical to setting the output switch on the 442 mixer to Line Tape or Mic 0 dB Line 10 dB Tape 40 dB Mic However to tailor the 302 s outputs exactly to the recording device the 302 s output can be attenuated from full line level in 2 dB steps from 0 to 16 d
19. ces Its high efficiency power circuitry runs the mixer from either three internal AA batteries or external 5 18 VDC The 302 is part of Sound Devices family of field production audio tools which includes mixers preamplifiers computer interfaces recorders and their accessories 2 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Limitation of Liability LIMITATION ON SOUND DEVICES LIABILITY SOUND DEVICES LLC SHALL NOT BE LIABLE TO THE PURCHASER OF THIS PRODUCT OR THIRD PARTIES FOR DAMAGES LOSSES COSTS OR EXPENSES INCURRED BY PURCHASER OR THIRD PAR TIES AS A RESULT OF ACCIDENT MISUSE OR ABUSE OF THIS PRODUCT OR UNAUTHORIZED MODIFICATIONS REPAIRS OR ALTERATIONS TO THIS PRODUCT OR FAILURE TO STRICTLY COMPLY WITH SOUND DEVICES LLC S OPERATING AND INSTALLATION INSTRUCTIONS TO THE FULLEST EXTENT PERMITTED BY LAW SOUND DEVICES SHALL HAVE NO LIABILITY TO THE END USER OR ANY OTHER PERSON FOR COSTS EXPENSES DIRECT DAMAGES INCIDENTAL DAMAGES PUNITIVE DAMAGES SPECIAL DAMAGES CONSEQUENTIAL DAMAGES OR OTHER DAMAGES OF ANY KIND OR NATURE WHATSOEVER ARISING OUT OF OR RELATING TO THE PRODUCTS THESE TERMS AND CONDITIONS OR THE PARTIES RELATIONSHIP INCLUDING WITHOUT LIMITATION DAMAGES RESULTING FROM OR RELATED TO THE DELETION OR OTHER LOSS OF AUDIO OR VIDEO RECORDINGS OR DATA REDUCED OR DIMINISHED AUDIO OR VIDEO QUALITY
20. d as a stereo pair Controlled in the Setup Menu In L R stereo link input 2 Fader controls overall stereo level When in MS position input 1 Gain Trim controls Mid input 2 Gain Trim controls the amount of stereo Side information and the input 2 Fader controls the overall MS stereo level Meter Brightness Controls the brightness of the LED output meter Each push selects among the four brightness levels Meter Ballistics Toggles among the available meter ballistic options VU only peak only combo peak VU peak hold VU SOUNDSDEVICES 302 User Guide and Technical Information 14 15 16 Headphone Selector Switch Sets the signal source sent to headphones Options include input PFL 1 2 3 left output bus right output bus Mono summed left and right STereo master RIN stereo monitor return MS mono MS stereo RTN MS Headphone Volume Adjusts the overall volume of the headphones NOTE the headphone output is capable of ear damaging levels Take care when adjusting among signal sources Headphone LED Indicates signal overload in the headphone and RTN circuits Input Panel Descriptions 17 18 Battery Check Button Press and hold to display the internal and external battery levels on the output meter Battery level remains for two seconds after button release Power Switch LED Three position switch selects between internal battery power or external DC sources middle position is
21. dently Attenuation is set from 0 to 16 dB in 2 dB increments and 40 to 56 dB in 2 dB increments The common attenuation levels of 10 dB Aux level 40 dB hot Mic level and 56 dB low Mic level are available When attenuating the XLR Output level in the Setup Menu determine how much attenuation is applied by adding the values shown by the solidly lit LEDs For example to set 40 dB of attenuation the values of 30 right meter and 10 left meter should be illuminated Output levels should be set according to the input level of the receiving device camera recorder transmitter etc This unique control is ideal because the gain structure of the 302 can be set precisely for any given piece of equipment To attenuate the XLR Outputs from Line to Mic level 1 Turn off the mixer if already on 2 Press and hold the Peak VU selection button while switching power on Continue to hold down the PK VU button until the 30 LED on the left meter begins to flash 3 The Setup Menu is now entered The XLR Output Attenuation is the first Setup Menu option indicated by the flashing 30 LED on the left meter The solidly lit 0 dB LEDs indicate that the mixer is currently set to Line level 0 dB 4 Use the Brightness down button to apply attenuation Successively press the down button until the 30 LED on the right meter and the 10 LED on the left meter are illuminated fa v 3 6 Features and specifications are subject to change V
22. directly affect current draw in different ways The following list highlights the larger current drawing functions listed from highest to lowest current draw Microphone The main source of current beyond the idle current draw See Phantom and T Powering 48 Powering V phantom can draw copious amounts of current out of the batteries depending on what model microphone is used Two phantom powered microphones draw twice as much current as one Microphones vary widely in their current draw depending on type and phantom voltage applied Output Drive Level Higher output drive levels into multiple low impedance inputs increases current draw Headphone Output High headphone output levels increase current draw Meter Brightness Current draw is slightly increased with higher illumination intensities Experimentation is recommended to determine battery life for each individual setup and application SOUNDS DEVICES 19 302 User Guide and Technical Information The Setup Menu The 302 has 18 available setup features See the Setup Menu Chart for all available options Setups typically set and forget features are infrequently changed With the Setup Menu these features are easily accessed directly on mixer s the front panel Entering the Setup Menu To access the Setup Menu perform the following steps 1 Turn off the mixer if already on 2 Press and hold the Peak VU selection switch while switching power on 3 The Set
23. drives CF cards batteries power supplies carry cases cables or adapters unless instructed by Sound Devices Sound Devices LLC Service Repair RMA XXXXX E7556 State Road 23 and 33 Reedsburg WI 53959 USA telephone 608 524 0625 Technical Support Bug Reports For technical support and bug reporting on all Sound Devices products contact Sound Devices LLC E mail support sounddevices com web www sounddevices com support Telephone 1 608 524 0625 Toll Free in the U S A 800 505 0625 Fax 1 608 524 0655 Sound Devices hosts a user support forum The URL is http forum sounddevices com Sound Devices cannot guarantee that a given computer software or operating system configuration can be used satisfactorily with the 302 Mixer based exclusively on the fact that it meets our minimum system requirements 28 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information SOUNDS DEVICES 29 SOUNDS DEVICES
24. es Input 1 for the Mid signal and Input 2 for the Side signal Input 2 s Fader controls the overall gain of the MS stereo pair Input 1 s Fader and both Input 1 and 2 s Pan switches are disabled Input 1 and 2 s Gain trim pots and High Pass Filters continue to act independently of each other The Gain control for Inputs 1 and 2 are used to vary the Mid and Side levels respectively Using the Input 2 Gain is an effective way to control the stereo spread Inputs 4 amp 5 me L ln When additional inputs are needed such as when multiple wireless receivers are used the Return connector can be assigned to act as the input connector for Channels 4 and 5 This functionality is set in the Setup Menu See Setup Menu Several options are available for Inputs 4 and 5 Either or both of the inputs can be sent to the left right or left and right output bus Control the input sensitivity of Inputs 4 and 5 with the RTN L CH4 and RTN R CH5 Trim controls adjacent to the RTN Input 4 5 3 5 mm Female connector The RTN Input 4 and 5 Input is an unbalanced stereo input that is suitable for tape or line level devices only There are no microphone preamps on Inputs 4 and 5 To indicate that the Return connector is now used for Inputs 4 and 5 the 4 5 Channel Enabled LED on the output panel illuminates SOUNDS DEVICES San 302 User Guide and Technical Information Outputs The 302 is a two bus mixer Each input can be hard p
25. espond to 20 dBFS and 12 dBFS respectively which are commonly used recording levels for today s digital recording devices IRT Scale Compliance The 302 meter scale can be shifted to comply with the German IRT specifications Setup Menu item 8 controls the adjustment to shift the meter scale See http www irt de for more information Ballistics Meter Ballistics refers to way the LED Meter visually displays the behavior of an audio signal Pressing the PK VU button on the 302 s front pane will instantly display the next ballistic setting At Factory Default the ballistics are displayed in this order VU Peak Peak Hold and VU combination and Peak and VU combination The selection and order of the various ballistics can be altered in the Setup Menu See Setup Menu for more details 16 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Peak An important setting used to display the absolute peak signal level to prevent overload of downstream devices Peak only is commonly used in Europe but is being replaced by the PPM VU combination metering VU Calibrated to display the average loudness of audio signals This setting is useful when connecting to analog recorders or in combination with peak readings VU meters are too slow to be used as the sole metering source when interconnected to digital devices At Factory Default
26. her headroom is achieved in presence of signals with a lot of low frequency energy SOUNDS DEVICES Ey 302 User Guide and Technical Information When possible attempt to equalize at the sound source with microphone selection use of windscreens microphone placement and on board microphone filtering Many microphones have on board high pass filters and the high pass filters on the 302 can be used in conjunction with the microphone s filters to increase the filter s slope The high pass filter is defeated when the switch is in the center position Pan Switches The pan switches assign inputs to the output buses Inputs can be sent to the left right or both outputs equally The 302 features excellent off attenuation in the left and right positions With the use of the pan switches separate mixes can be sent to the left and right outputs For example a summed mono mix of all three inputs can be sent to the right output while an isolated mix of only one input can be sent to the left output LCR Input Limiters The 302 Input Limiters act solely as safety limiters Enabling the Output Limiters with the LIM switch located on the front panel will also enable the Input Limiters See Setup Menu to defeat the Channel Limiters entirely In normal operation with a properly set gain structure the threshold of the Input Limiter will not be reached In the event of extremely high input signal levels such as
27. iance Inc Cedarburg Wisconsin March 26 2003 WM Akam Matthew Anderson Director of Engineering Sound Devices LLC SOUNDS DEVICES 302 User Guide and Technical Information Warranty and Technical Support Warranty amp Service Sound Devices LLC warrants the 302 Mixer against defects in materials and workmanship for a period of TWO 2 years from date of original retail purchase This is a non transferable warranty that extends only to the original purchaser Sound Devices LLC will repair or replace the product at its discretion at no charge Warranty claims due to severe service conditions will be addressed on an individual basis THE WARRANTY AND REMEDIES SET FORTH ABOVE ARE EXCLUSIVE SOUND DEVICES LLC DISCLAIMS ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WARRAN TIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE SOUND DEVICES LLC IS NOT RESPONSIBLE FOR SPECIAL INCIDENTAL OR CONSEQUEN TIAL DAMAGES ARISING FROM ANY BREACH OF WARRANTY OR UNDER ANY OTHER LE GAL THEORY Because some jurisdictions do not permit the exclusion or limitations set forth above they may not apply in all cases For all service including warranty repair please contact Sound Devices for an RMA return mer chandise authorization before sending your unit in for repair Product returned without an RMA number may experience delays in repair When sending a unit for repair please do not include ac cessories including SSD
28. isit www sounddevices com for the latest documentation 302 User Guide and Technical Information 5 Step through all Setup Menu options by pressing the PK VU button until the meters dance The setting is now saved and the Output Attenuation LED should now be lit Tape Out Mix Output tape oury The Tape Output is typically used to interface with consumer inputs such as MiniDisc DAT MXOUT and compact cassette recorders The 302 has an unbalanced two channel tape level output on a single locking Switchcraft TA3M type connector The Tape Output program is identical to the XLR Output Tape Out level is fixed at a 15 dBu nominal level and is electrically isolated from the XLR Outputs Additionally the Tape Output functions as the Mix Out to link multiple Sound Devices mixers See Mixer Linking Output Limiters OFF LIM LINK In addition to the limiters on each input channel the 302 has a software controlled Output Limiter Output Limiters are used to prevent overloading of recorders cameras and wireless transmitters connected to the 302 The Output Limiters on the 302 use an optoisolator based peak limiting circuit The Output Limiter threshold is set in the Setup Menu The Output Limiter can be set in one of two positions Link or LIM Link Stereo Operation When set in the link position the Output Limiters act identically on each left right output bus If one output causes the limiter to engage the other bus will foll
29. led RTN can be monitored in headphones Return or confidence monitoring is useful to monitor audio from a camera or recorder Typically a camera s headphone output is used as the Return Monitor source Return levels are controlled by the heaphone level while the return level sensitivity can be adjusted with the RTN L and RTN R Trim controls sa v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Tone Oscillator Slate Microphone A single 3 position switch controls the Tone Oscillator and Slate Microphone The Tone Slate switch is located in the upper right corner of the front panel The switch is protected from inadvertent engagement by the end panel When the Tone Oscillator is engaged the inputs are muted MIC 1K Tone Oscillator Tone is used to set gain levels between the 302 and the next device in the signal path The Tone Oscillator uses the latch position of the switch Switch positions can be reassigned in the Setup Menu From the factory the Tone Oscillator is set to output a 1 kHz tone at 0 dBu to the outputs when the outputs are set to Line level If you are interconnecting primarily with analog video cameras you may want to modify to the tone output level to 4 dBu in the Setup Menu In the Setup Menu the Tone frequency and Output level can be adjusted and tone can be defeated altogether When engaged
30. nd pin 2 hot pin 3 cold Can be unbalanced by using pin 2 for signal and pin 1 for ground Battery Tube Holds three AA batteries for internal powering Accepts alkaline lithium or NiHM rechargeable cells Return Channel 4 5 Level Control Adjusts the gain of the return feed to balance program and monitor signals in headphones Return Channel 4 5 Input Unbalanced stereo 3 5 mm input connector for return monitor audio 3 5 mm wired tip left ring right sleeve ground Connection used for inputs 4 amp 5 when selected in Setup Menu Mix In An input to the master bus designed exclusively to link the Tape Out Mix Out of 302 442 MixPre or MP 2 to the 302 for additional inputs Pin 1 ground pin 2 left pin 3 right Shell of TA3 connector must be grounded to pin 1 to open connection Channel 4 5 Activation LED When illuminated indicates that the return connector is now set as input 4 and 5 in the Setup Menu Output Attenuation LED When illuminated indicates that the XLR output connectors are set for a level other than the factory default line level See Setup Menu to set XLR output levels Tape Out Mix Out Unbalanced stereo output on TA3 type connector Same program as master output Pin 1 ground pin 2 left pin 3 right Also used to link to the Mix In of a 442 or 302 DC Input Accepts DC voltages from 5 18 VDC for mixer powering Hirose 4 pin connector wired
31. nd slate offers a 400 Hz tone preceding the slate mic 10 Metering Source ST amp PFL 30 Follows headphone switch posi Selects the metering source PFL levels are show on the left tion 26 STereo only 24 meter 8 Meter Reference OVU 0 dBu 30 0 VU Peak 3 dBu 18 Selects VU and or Peak dBu reference level Level OVU 4 dBu 26 0 VU Peak 4 dBu 16 VU and Peak OVU 8 dBu 24 0 VU Peak 5 dBu 14 0 VU Peak 1 dBu 22 0 VU Peak 6 dBu 12 0 VU Peak 2 dBu 20 0 VU Peak 7 dBu 10 0 VU Peak 8 dBu 8 6 Split Ear Monitor OFF 30 ON 26 Program Mix 24 Assigns summed mono RTN signal to left headphone output and R program to right headphone output Active in RTN position 4 Headphone ON 30 OFF 26 Reduces the headphone level by 20 dB when tone oscillator Attenuation w Tone is activated 2 External Battery 1 30 2 26 3 24 4 22 5 20 6 Selects the external DC range of the voltage check function Voltage Reference 18 see voltage metering chart below and power LED flash point 0 Meter Ballistics VU PPM VU PPMHold VU PPM 30 Selects meter ballistics choices selected when toggling the Select PPM VU PPMHold VU PPM 26 front panel meter ballistics switch VU VU PPM Hold VU PPM 24 PPM VU PPM 22 VU VU PPM 20 PPM only 18 4 Master Peak LED 1 dB increments from 4 to 20 dBu Sets the signal level where the 20 LED illuminates Used
32. nection Powering the 302 1 Insert three AA batteries with side first into the mixer battery tube 2 Slide the power switch to the INT position to power the 302 The power LED will illuminate solid green with good batteries Interconnection 1 Connect the XLR output connectors of the 302 to the destination recorder camera or other input 2 Connect microphones wireless receivers or other signal sources to the XLR input connectors 3 Switch phantom or T power on as need by microphone sources Setting Output Gain Structure 1 Determine the required input level of the destination source If a line level connection is required no further output level adjustment is needed on the 302 If the input level of the receiving device requires less than line level such as microphone or a 10 dBu level adjust the master output level accordingly in the Setup Menu see Output Level Control 2 Turn on the 302 s tone oscillator Adjust the input sensitivity on the destination device so that the 302 output is at an average level with sufficient headroom to accommodate signal peaks For many digital cameras and recorders this is often a range between 20 and 12 dBFS as read on the recorder or camera s peak meter With analog devices it is typical to set input sensitivities so that tone is near 0 VU Setting Input Levels 1 Select the input type mic or line for each input channel 2 Set the channel fader to the unity gain position 0 dB
33. nitored in dual mono Pre Fader post Limiter and post High Pass Useful for setting the channel gain PFL 2 PFL solo monitoring of the Channel 2 input signal The channel is monitored in dual mono Pre Fader post Limiter and post High Pass Useful for setting the channel gain PFL 3 PFL solo monitoring of the Channel 3 input signal The channel is monitored in dual mono Pre Fader post Limiter and post High Pass Useful for setting the channel gain L Left output bus monitored in dual mono R Right output bus monitored dual mono M Summed mono of the left and right output bus ST Stereo monitoring of the master output bus This is the primary monitoring path RTN Stereo return from the RTN monitor input path M MS Monitoring of the mono signal of an MS stereo signal ST MS Monitoring of discrete MS signals in the headphones as a decoded stereo signal RTN MS Monitoring of discrete MS return signal in the headphones as decoded stereo signal Headphone Level and Overload LED The Headphone Level controls the overall headphone level sent to the headphones The adjacent LED indicates that the headphone circuit is overloading The LED will also illuminate with an overloaded RTN signal Return Monitoring i y etum input connector RTN INPUT 4 5 Adjusts return input level Indicated by the RTN positions on the rotary switch audio sources connected to the mixers 3 5 mm jack labe
34. nu on page 15 for instructions on how to enter and navigate the setup menu Factory default settings are displayed in bold Meter Setup Name Setting value on R Meter Descripion 30 XLR Attenuation Line level 0 add the indicated values on left Selects the amount of attenuation from Line level on the XLR Level and right meter for attenuation amount Outputs 26 Output Limiter 1 dB increments from 4 to 20 dBu level Sets the Output Limiter threshold in dBu see page 12 in User Thres Adjustment shown on meter Guide for more details 24 Stereo Link Ch 1 2 OFF 30 Stereo Link 26 MS Link 24 Links inputs 1 and 2 as a stereo pair either X Y or MS stereo 22 Input Limiter Defeat OFF 30 ON 26 When ON input limiters remain OFF at all times 20 RTN L to Ch 4 Input OFF 30 L only 26 R only 24 L R 22 Routes RTN Left to the master bus with set pan assignment 18 RTN R to Ch 5 Input OFF 30 L only 26 R only 24 L R 22 Routes RTN Right to the master bus with set pan assignment 16 Tone Osc Frequency 1000 30 400 26 100 24 Hz Selects the frequency of the sine wave tone oscillator 14 Tone Osc Level OFF 30 20 dBu 26 10 dBu 24 1dB Selects the output level of the tone oscillator in dBu at LINE increments to 8 0 dBu is default level 12 Slate Mic ON OFF ON 30 Tone Slate 26 OFF 24 Activates the slate mic Tone a
35. ow suit This is useful when using the 302 in stereo operation output limiters will not affect the stereo image LIM Dual Mono When using each output bus separately the output limiter should be set to the ON position This position engages each Output Limiter separately They will act on each respective output bus independently of each other While all dynamics processing distorts the audio signal overloading a circuit is usually far more objectionable For most applications the limiters are a significant benefit and should be enabled Headphone Monitoring M R ST HE L RTN 3 M aN IST RTN MS The 302 has a flexible headphone circuit capable of selecting a variety of audio signals for headphone monitoring Most professional headphones ranging in impedance from 8 ohms to 1000 ohms can be used with the 302 The 302 headphone output is capable of producing ear damaging levels Turn down levels before switching headphone sources The Headphone Level Control adjusts the overall volume sent to the headphones The level control adjusts both the left and right headphone outputs simultaneously SOUNDS DEVICES EE 302 User Guide and Technical Information HP Monitor Selection Several signal sources can be sent to the headphones The front panel rotary switch selects the signal HP Sources Description PFL 1 PFL solo monitoring of the Channel 1 input signal The channel is mo
36. pin 1 negative pin 4 positive Ext DC is completely isolated floating from the rest of the circuitry SOUNDSDEVICES 302 User Guide and Technical Information Inputs The 302 s inputs consist of three full featured microphone preamplifiers Each input has a wide gain range to accommodate nearly all signal types The 302 easily accepts signals from low sensitivity ribbon and dynamic microphones medium level wireless and condenser mic outputs and hot line level signals The XLR inputs of the 302 are transformer balanced The isolation characteristics of transformers are superior to other balancing techniques and are ideal for the hostile and uncontrolled environments of field production Transformers provide galvanic isolation from the driving source meaning there is no direct electrical connection Signals are transformed magnetically The input transformers in the 302 use premium magnetic core material to achieve high signal handling capability especially at low frequencies while keeping distortion to a minimum Because of their inherently high common mode impedance transformers are unrivaled by any other type of input for common mode noise rejection The inputs of the 302 can be used as balanced or unbalanced When unbalancing ground pin 3 to pin 1 of the XLR connector There is no change in gain between unbalanced and balanced connections into the 302 Mic Line Level Selection MIC LINE Selects
37. r use with 302 7 Series recorders and MixPre NP type battery compartment and accessory pouch for wireless Built for Sound Devices by CamRade Convenient padded carry storage case with handles handy to store wallets keys and mobile phones handcrafted in China XL 1B TA3 F to TA3 F Interconnection cables for 302 to 302 and 302 to 442 linking 12 inch XL 3 3 5 mm to TA3 F link cable for MixPre MP 2 Tape Output to 302 Mix In 20 inch XL 4 Bag of four 4 TA3 F type connectors XL 7 TA3 F to 3 5 mm jack to connect unbalanced stereo TA3 tape out connection to unbalanced stereo 3 5 mm inputs 15 inch XL 14 3 5 mm male TRS to 1 4 inch female TRS jack for headphone extension 12 inch XL H Bare Hirose connector Hirose p n HR10 7P 4P to mate with locking 4 pin DC power jack NP type battery cup with 24 inch cable with Hirose 4 pin locking power jack at equipment end XL WPH3 AC to DC Power Supply in line 100 240V 50 60 Hz input 12 VDC 3 75 A 45 W output Hirose 4 pin DC plug Supplied with 3 pin IEC cord for use in North America and Japan 26 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information CE Declaration of Conformity According to ISO IEC Guide 22 Sound Devices LLC 300 Wengel Drive Reedsburg WI 53959 USA declares that the product 302 Production Field Mi
38. ries or from external DC The power efficient 302 can operate from three AA alkaline batteries for nearly a production day less with phantom powering While many users prefer external DC sources to power both their mixer and wireless receivers the use of internal batteries is perfectly feasible for both primary and backup powering of the 302 Power Switch and LED The 3 position power switch selects between internal batteries external DC or power off Because of the power supply design of the 302 the unit takes approximately 10 seconds to fully stabilize its power supply after power up Additionally there is sufficient capacitance in the circuit to toggle between internal and external without disruption in audio The power LED illuminates solid green to indicate good power When the power source falls below the threshold voltage See the Setup Menu Chart the power LED begins to flash Once flashing changing the power source is recommended 18 v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Internal Batteries The 302 uses a unique battery tube to hold 3 AA batteries This robust tube is sealed to prevent potential battery leakage from ruining internal circuitry The threaded nickel cap extends beyond the panel to make battery changes easy and quick The battery tube extends no farther than adjacent XLR connectors Remove bat
39. sition is selected 24 LED will illuminate solid 4 Press the PK VU button multiple times until the meters perform their scrolling dance This saves the new setting into memory To save new values to memory the PK VU button must be repeatedly pressed until the last setup is reached At that point the meters will dance and the new values will be saved to memory EJ v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information User Default A memory location is available to store user defined default settings The user default is helpful to save a baseline of settings different than the factory default settings To save a user default perform the following 1 Hold down both the meter brightness button and battery check button while powering the mixer 2 The current settings will be saved as the user default The user default settings can be recalled from the setup menu by applying the user default restore See the Setup Menu Chart Output Limiter Adjustment Output limiter thresholds are adjustable between 4 dBu and 20 dBu in 1 dB increments The threshold level is shown on the lower right meter string by illuminating LEDs Because LEDs are spaced every 4 dB a combination of flashing and solid adjacent LEDs indicate limiter levels between the numbered LEDs Factory default is 20 dBu Each press of the battery button or meter
40. teries when the unit is stored for extended periods External DC Sources For extended mixer runtime use an external DC source The 302 can be powered from any DC source with a voltage range of 5 volts to 18 volts If using an AC to DC transformer such as a Sound Devices XL WPH2 make certain its output voltage falls in the 5 18 V range and can supply at least 4 watts If an over voltage is applied to the mixer an internal poly fuse is opened to prevent mixer damage The fuse is reset when the voltage is removed The external DC supply is isolated floating from the circuitry to minimize ground loop and interaction among devices sharing the same DC source The external DC connector is a Hirose 4 pin female This locking connector mates to Hirose P N HR10 7P 4P Sound Devices P N XL H Pin 1 is negative and pin 4 is the positive voltage Power Metering The battery check button indicates battery voltages of internal and external power supplies on the output meter The left meter shows the internal battery voltage and the right meter shows the external battery voltage Since many different battery types are available for external use the external DC metering can be customized for a given battery in the Setup Menu The power meter is read from left to right with the highest voltage indicated with LED s lit all the way to the left green Power Consumption The 302 can vary in the amount of current it draws Several functions of the 302
41. tes that the channel level is approaching the clipping point Limiter LED When illuminated indicates that the channel limiter is active and is reducing the channel gain to prevent overload Gain Trim Coarse input gain control Sets the initial input sensitivity level so that the Fader can be used for fine gain adjustments Polarity Reverse Switch Input 2 When engaged the polarity of Input 2 is reverse 180 out of phase with respect to inputs 1 and 3 Useful to flip the stereo image with MS stereo Limiter Switch Activates both input and output limiters ON is dual mono limiter operation LINK is stereo operation Output limiter threshold is set in the Setup Menu Output Meter Sunlight viewable 20 segment LED meter Calibrated in dBu when peak reading re 8 10 11 12 13 T Slate Mic Tone Switch Two position switch activates the slate microphone in the left momentary position or the tone oscillator in the right latched position Additional options are available in the Setup Menu 000 Pan Switch Assigns the input channel to the output bus Left only Center equal left and right or Right only High Pass Filter Low Cut Three position switch engages the high pass filter Used to reduce excessive low frequencies 12 dB per octave at 80 Hz or 160 Hz Center position is off Stereo Link LED Inputs 1 amp 2 Indicates that inputs 1 and 2 are linke
42. the 302 has its 0 VU reference level at 0 dBu The meter reference level can be altered in the Setup Menu See Setup Menu for more details Peak and VU combination This setting is very informative as it simultaneously displays the absolute peak level and the average loudness of an audio signal Peak Hold and VU Identical to the Peak and VU combination setting with the exception that the peak level is held for 1500 ms Peak Hold is useful in applications when an overload condition is unacceptable or when program material must not exceed a prescribed threshold This allows for easy viewing of peak values that could otherwise go unnoticed Ballistics Lock The ballistics setting can be locked to prevent unintended changes While pressing down the Brightness button press the Battery Check button to lock or unlock the ballistics There is no indication that the ballistics are locked Illumination Intensity The Output Meter can be set for comfortable viewing in all lighting conditions There are four levels of brightness intensities available on the 302 Select the intensity level best suited for the current environment To toggle through the available intensities press the Brightness button on the 302 s front panel SOUNDS DEVICES 302 User Guide and Technical Information Mixer Linking 302A 302B a LINE C 2 RS LINE mic D L SLINE e SET UP FEATURE USER MANUAL FOR UNBALANCED XLR OUTPUT DO NOT O PIN E
43. the general input level for each input channel Switch between Mic Line levels using the switch adjacent to the respective XLR input Taking into account all gain stages the 302 has 75 dB of available gain from mic input to line output When inputs are set to the LINE position the input sensitivity is reduced by 40 dB Gain Trim Like traditional mixing consoles the 302 s input sensitivity is set with the Gain trim potentiometer With the Fader set to unity gain 0 dB or 12 o clock make the appropriate adjustments with the Gain trim pot Make coarse gain adjustments with the Gain trim pot during setup Once the gain is set to the desired level recess the Gain trim pot to hide it from the 302 s mixing surface Channel Fader The Channel Fader is the primary level control used during mixing operation Use the Fader to make fine level adjustments during operation The fader can be attenuated from off full counter clockwise position to 15 dB above the set Gain Trim level full clockwise position ol v 3 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation 302 User Guide and Technical Information Phantom and T Microphone Powering DYN PHT I 7 This switch selects the type of power that will be applied to the adjacent input XLR The 302 provides both Phantom and T power on each channel respectively If neither Phantom or T power are required with d
44. to Threshold Adjust level shown on meter set an alternate peak level 8 Slate Tone Switch Normal 30 reversed 26 tone only 24 Changes the functionality of the slate tone switch Switch slate only 22 can be defeated by engaging setup 14 and setup 12 12 Default Restore OFF 30 User Default 26 Resets setup menu to either the stored default factory Factory Default 24 Custom Default 22 default or custom default values Voltage Metering Chart Setting High Voltage LED Flash Point Low Voltage Power Source 45 3 4 3 0 Internal batteries 1 13 0 11 5 11 0 12 V NiCad NiMH Li etc 2 17 0 11 5 11 0 Expanded range of setting 1 3 8 5 5 75 5 5 6 V NiMH Li etc 4 14 0 11 4 10 12 V Lead Acid 5 7 0 5 7 5 0 6 V Lead Acid 6 17 0 11 5 5 0 Full range of DC input with cutoff for 12 V NiCad etc SOUNDSDEVICES 302 User Guide and Technical Information Specifications Measurement settings unless otherwise specified Gain controls for the channel being measured at mid point all other channels gains fully down pan switches centered high pass off inputs in mic position outputs in line position Mic input driven with 150 ohm source Outputs measured with 100k ohm load Temperature at 25 C Maximum Gain typical trim fader master phones RTN fully up Inputs Dynamic Range Frequency Response 115 dB minimum trim fully down 2
45. up Menu is now entered 8 6 4 2 0 ee au a wae 72 see ie ial LT IKR g Ory a H KS yv D A iisi ATT Functions as the down Press and hold while Functions as the up button when in a setup powering on to enter the button when in a setup Setup Menu also used to advance to the next Setup Menu option The mixer will not pass audio when in the Setup Menu When in the Setup Menu the flashing LED on the left meter L position indicates the selected setup feature The right meter R position indicates the values selected for the setup Use the PK VU button advance from one setup to another If the intended setup is passed setup mode must be re entered since you can only step forward through the Setup Menu To adjust values the meter brightness button down and the battery check button up allow selection among setup values Some setups have multiple values while others have only two values Setup Example The following steps show how to change the tone frequency from the factory default of 1 kHz to 100 Hz 1 Enter the setup menu by pressing and holding down the PK VU button while powering the mixer Hold the button until the 30 LED begins flashing 2 Press the PK VU button six times until the left meter LED flashes at the 16 position see Setup Chart for a list of all setups 3 To move among parameter values press the brightness button down and battery check button up until the 100 Hz po
46. xer is in conformity with and passes EN55103 1 1997 EMC product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 1 Emissions EN55103 2 1997 EMC product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 2 Immunity EN55103 1 Phenomena 2 3 1997 Magnetic emissions at 1 meter 50 Hz 50 kHz EN55103 2 Phenomena 3 1997 Magnetic immunity 50 Hz to 10 kHz CISPR 22 EN55022 2003 Radiated and conducted emissions Class B EN61000 4 2 2001 TEC61000 4 2 2001 ESD 4 kV contact 8 kV air discharge EN61000 4 3 2001 TEC1000 4 3 2001 Radiated RF immunity 10 V m 80 1 kHz amplitude modulation EN61000 4 4 2001 TEC61000 4 4 2001 AC power ports EFT Burst I O lines 0 25 kV to 1 0 kV power line 0 5 kB 1 kV EN61000 4 4 2001 TEC61000 4 4 2001 EFT Burst I O lines 0 25 kV to 1 0 kV power line 0 5kB 1kV EN61000 4 5 2001 TEC61000 4 5 2001 Surge 1 kV differential mode line to line 2 kV common mode line to ground EN61000 4 6 2001 TEC61000 4 6 2001 Conducted RF immunity 3 V 80 1 kHz amplitude modulation EN61000 4 11 2002 TEC61000 4 11 2001 Voltage dips and short interruptions at test voltage level 0 V unominal 70 V unominal 25 period Tested by L S Compl
47. ynamic microphones for instance it is good practice to turn off microphone powering DYN position Phantom Power Phantom powering is a fixed DC voltage between 12 and 48 volts This voltage is resistively applied to pin 2 and pin 3 of an XLR connector relative to pin 1 There is no voltage difference between the signal pins 2 and 3 Dynamic microphones will operate as normal when phantom power is applied to them The 302 can provide up to 10 mA to each input at 48 V sufficient for the most power hungry condenser microphones Many phantom powered microphones do not require 48 V and can be properly powered with 12 V When acceptable use 12 V phantom to extend the 302 s battery life The phantom voltage level can be set to either 12 V or 48 V and is applied across all inputs where phantom power is selected T Powering T powering is a microphone powering scheme used by several European condenser microphone manufacturers Today T powered microphones are not as common as phantom powered microphones but many are still in regular use Unlike phantom power T power resistively applies 12 V between the signal pins 2 and 3 The 302 provides positive T power on the three pin XLR connector pin 2 has 12 volts relative to pin 3 T power can be selected for each input When using red dot T powered microphones reverse polarity T power use a polarity reversing adapter on the input otherwise damage to the microphone may occur
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