製品マニュアル（詳細スペック）
Contents
1. DAC DAC 3 LCD s Lock OR 4 DAC 0dB J The Fixed Level Stereo DAC Output 1 m904 DA DAC2. a CALIBRATION CAL b SELECT LCD LED c LCD SELECT DIGI LOOP SOURCE 9 CAL e LCD AES3 1 AES3 2 S PDIF TOSLINK MAIN LEVEL EDIT 1 4 f CAL CAL H Adjusting Headphone Amplifier Gain 1 904
3. LED N Using the Talkback Feature 1 m904 XLR model801R Not Bad Huh 2 48V 48V 33dB 48V a CAL LED b TALK BACK LED dB c
4. G The Level Displays 1 LED 0100dB 0dB H Using The Headphone Outputs 1 m904 2 2 192kHz model 901 The Fixed Level Stereo DAC Output 1 m904 DA DAC DAC 2
5. c TALKBACK LED 48V ON OFF d TALKBACK e ON 48 0 OFF 00 0 f CAL CAL J Changing the Dim Level 1 Dim 20gB 5 35dB 5dB a CAL CAL b DIM LED c DIM d DIM e CAL CAL
6. f CAL CAL B Selecting ADAT Input Source Pair TOSLINK ADAT TOSLINK AES3 TOSLINK ADAT TOSLINK ADAT TOSLINK ADAT ADAT 8CH 4 1 ADAT 1 2ch a Calibrate CAL LED b TOSLINK ADAT LCD INPUT OFFSET SELECTED TOSLINK SELECTED TOSLINK ADAT SELECTED
7. DAC K MUTE ALL MODE MUTE MUTE LED L MONO MODE 1 MONO LEFT RIGHT LED M DIM MODE DIM 20dB CAL 5 35dB 5dB
8. www umbrella company jp m904 key features B3 1 W24bit 192kHz AES3 S PDIF ADAT TOSLINK s Lock PLL 100dB 0 5dB W2U VO 1 2 227 320 m904RCU 3
9. model 901 2 1 dim 48V DAC main frame front panel Hr E GRAZ main level edie headphone level AESac sipow rires 688446 QD GRACE DESIGN USA hasdphona outputs power b A POWER LED DC LED B HEADPHONE OUT
10. 0dB 20dB 10dB a CALIBRATION CAL HEADPHONE LEVEL 1 c LCD HEADPHONE GAIN ER RSNET 9 CAL e f CAL CAL Adjusting Talkback Mic Preamp Gain 48V On Off 10 60dB 1 m904 33dB 48V OFF a CAL CAL b TALKBACK LED MAIN LEVEL EDIT
11. TOSLINK ADAT TOSLINK ADAT TOSLINK ADAT ADAT 8CH 4 1 ADAT 1 2ch a Calibrate CAL LED b TOSLINK ADAT LCD INPUT OFFSET ADAT SELECTED TOSLINK SELECTED TOSLINK ADAT SELECTED c b TOSLINK ADAT ADAT I P SOURCE SELECTED CHANNEL PAIR MAIN LEVEL EDIT d Calibrate CAL LED
12. 48V CAL m904 m904 ALL INPUT OFFSETS 0dB ALL GLOBAL SPEAKER OFFSETS 0dB ALL INDIVISUAL CHANNEL OFFSETS 0dB FIXED DAC OUTPUT LEVEL 0dB CUE OUTPUT LEVEL 0dB TALKBACK MIC PREAMP GAIN 33dB PHANTOM POWER ON OFF OFF DIM LEVEL 20dB CUE SPEAKER 3 MODE CUE MODE A Calibrating Input Source Levels 1
13. 2 C ANALOG INPUT SELECT SWITCHES 4 D DIFITAL INPUT SELECT SWITCHES 4 E MAIN LEVEL EDIT ROTARY ENCORDER 0 5dB CAL F MAIN LEVEL EDIT DISPLAY 3 HORE O 100dB CAL G HEADPHONE LEVEL ROTARY ENCODER 0 5dB H HEADPHONE LEVEL DISPLAY 3 0 100dB
14. 2 MON gt CUE lt SPEAKER 3 OFFSET kGLOBAL gt LCD 3 SPEAKER3 GLOBAL CALIBRATE CAL 4 MON gt CUE 3 3 MON gt CUE LED CUE OUT 3 1 1 MON gt CUE 1 2 SPKR SEL 3 1 CALIBRATE 2 MON gt CUE 3 MON gt CUE LCD CUE OUTPUT LEVEL GLOBAL
15. 20dB CAL MODE DIM O MUTE SWITCH m904 LED MUTE P SPKR SEL SWITCH 1 2 1 2 LED Q TALKBACK SWITCH input and output connections GRACE DESIGN USA s e Ace sor OUT AES ore ADAT N aema AES 1 SOF wank umBAL REA Hide REMOTE DAC OuT CH OUT 1 CH OUT 2 Cue our CuE m 1 AUDIO INPUTS A BALANCED ANALOG INPUTS 4dBu 1 2 CUE
16. 0 0 d e f CAL CAL D Selecting CUE Output Speaker Output Mode m904 CR OUTI CR OUT2 2 3 CUE OUT 1 CALIBRATE LED CAL
17. m904 10gB 0 5dB CAL CAL LED CAL b LED c CAL 0 0 d e
18. K Resetting the System Defaults 1 m904 a CAL 5 b LCD c MUTE d AES3 2 e HOfIOHHL 320123u3dris DoTauaow Su3 AIMO LndLcno aaannva Tnd ao Td 4907 8 NI 320 TIAIINSMIO AYO 1no 31045 e 1TO GS Y NNvH 3 TOYLNOD Andino ova Sd L ld LC z M3Mvdds HOZ WNNSOL cesav 8 q3oNvTvu ndNI ONwTw Ni 1 OOH TOXLNOD 3NOHd Y3H 3NOHd OWSH LTidNI Q39NY T v a e TOXLNOD 13 431 ANS 3NOHdQNY3H 543 30 Ld LO 2 81 ddS TO HO e dWg dd DIN 42983191 134437 M3MV3asiano
19. LCD CUE OUTPUT LEVEL GLOBAL 4 CALIBRATE CAL E Using the MON gt CUE Feature 1 CUE INPUT CUE OUTPUT 2 MON gt CUE L R CUE OUT CUE F Adjusting Main and Headphone Levels 1 m904 2 0 5dB 0 05qB CAL
20. 3 XLR 1 2 3 B UNBALANCED ANALOG INPUT 10dBv RCA C AES3 DIGITAL INPUTS 2 AES3 110 XLR D S PDIF COAXIAL DIGITAL INPUTS 1 S PDIF 75 RCA E TOSLINK DIGITAL INPUTS 1 TOSLINK F ADAT DIGITAL INPUTS 1 ADAT ADAT 44 1kHz 48kHz 8ch 4ch G TALKBACK MIC INPUTS XLR
21. LED CAL 2 MON gt CUE lt SPEAKER 3 OFFSET kGLOBAL gt LCD 3 SPEAKER3 GLOBAL CALIBRATE CAL 4 MON gt CUE 3 3 MON gt CUE LED CUE OUT 3 1 1 MON gt CUE 1 2 SPKR SEL 3 1 CALIBRATE 2 MON gt CUE 3 MON gt CUE
22. s Lock DAC b s Lock PLL 192kHz s Lock AES3 S PDIF TOSLINK ADAT Word Clock Super Clock Phase Lock s Lock s Lock m906 DAC s Lock 44 1 48kHz 2c 10Hz 88 2 96kHz 20Hz 176 4kHz 40Hz c
23. F TB SW JACK 1 4 TRS TRS connecting the m904 POWER CONNECTION 1 CHECK LINE VOLTAGE SETTINGS 100V 2 POWER UP SEQUENCE m904 m904 m904
24. DAC m904 96dB 31 5dB 0 5dB OdB a CALIBRATION CAL b SELECT LCD LED c DAC LEFT RIGHT 9 CAL 0 0 e f CAL CAL G Selecting Digital Loop Thru Output Source 1 m904 2
25. c b TOSLINK ADAT ADAT I P SOURCE SELECTED CHANNEL PAIR MAIN LEVEL EDIT d Calibrate CAL LED C SPEAKER 1 and 2 Output Level Calibration 1 10dB 0 5dB a CAL CAL b SPKR SEL CAL SPKR SEL c CAL
26. DSYSTEM LCD LCD m904 J SELECT SWITCH AES ADAT WORD X SUPER CLOCK K MON gt CUE SWITCH CUE 3 L CALIBRATE SWITCHES m904 CAL CAL CAL M MONO SWITCH SUM N DIM SWITCH
27. 4 CALIBRATE CAL E Changing CUE Output Speaker 3 Output Level calibration 1 m904 3 SPKER 3 MON gt CUE CUE Hi m904 10dB 0 5dB a CAL CAL LCD MON gt CUE MAIN LEVEL EDIT 1 CUE OUTPUT LEVEL GLOBAL CUE 0 100dB 100 100 2 CUE OFFSET LEFT CHANNEL CUE 10gB DRIT 0 5dB 3 CUE OFFSET RIGHT CHANNEL CUE 10dB
28. C Changing Digital Input Clock Source 904 DA AES3 ADAT S PDIF TOSLINK GRACE design s Lock PLL Phase Lock Loop b SEL m904 LCD SEL AESSWORD SUPER CLOCK LOD c About s Lock a s Lock GRACE design PLL s Lock m904
29. CAL 48V 2 AUDIO OUTPUTS A CR OUT 1 2 XLR 1 2 m904 B CUE OUTPUT XLR CUE 3 C FIXED DAC OUTPUT XLR DAC D STEREO HEADPHONE OUTPUTS 2 1 4 TRS E DIGITAL LOOP THRU OUTPUTS AES3 S PDIF AES3 S PDIF AES3 110 XLR S
30. 0 5dB 4 SPEAKER 3 OFFSET GLOBAL SPEAKER 3 10dB DRIT 0 5dB 5 SPEAKER 3 LEFT CHANNEL SPEAKER 3 10dB 0 5dB 6 SPEAKER 3 RIGHT CHANNEL SPEAKER 3 10dB 0 5dB b LEFT RIGHT 10dB CAL CALIBRATE F Setting the Fixed Level DAC Outputs 1 DAC
31. 10dB 60dB d 1 TALK BACK 48V 480 00 0 e TALK BACK f CAL 3 TALK BACK TB IN JACK CUE OUT CR OUT DIMM
32. operating the m904 A Selecting Analog Input Source m904 BALI BAL2 UNBAL CUE 1 LCD B Selecting Digital Input Source m904 AES3 1 AES3 2 S PDIF ADAT TOSLINK 1 LCD s Lock 2 2 TOSLINK ADAT TOSLINK AES3
33. 0 05dB 15dBu 27dBu 30dBu 20dBu 30k Ohms 50k Ohms 300 Ohms Minimum load impedance 300 Ohms DIGITAL TO ANALOG CONVERTER FIXED OUTPUTS Output Levels User selectable OdBFS 16dBu 24dBu Fixed output trim range 0 5dB steps 95 5dB to 30dB THD N 1kHz 1dBFS 20 22kHz bandwidth 0 0006 Dynamic Range 20 22kHz bandwidth gt 111dB Input Lock Range AES3 SPDIF 32kHz to 192kHz TOSLINK 32kHz to 96kHz ADAT LIGHTPIPE 30kHz 55kHz s Lock Sample Clock Intrinsic Jitter 20 22kHz bandwidth lt 25ps s Lock Sample Clock Jitter Rejection 1kHz sine jitter 40dB s Lock Supported Sample Rates AES3 SPDIF 44 1 48 88 2 96 176 4 192kHz TOSLINK 44 1 48 88 2 96kHz ADAT LIGHTPIPE 44 1 48kHz s Lock Capture Range 44 1 48kHz 10Hz 88 2 96kHz 176 4 192kHz Word Clock Superclock Input Impedance switchable Minimum Voltage Maximum Voltage Word clock frequencies supported Superclock frequencies supported POWER SUPPLY MECHANICAL SPECS Power consumption Input Voltage 50 60Hz Dimensions Main chassis IEC 2U Remot control unit Power supply unit Weight Main chassis Remote control unit Power supply unit 20Hz 40Hz 75 Ohms 1M Ohms 3V peak to peak 5V peak to peak 44 1 48 88 2 96 176 4 192kHz 11 2896MHz 12 288MHz 256x fs 40W 100 120 220 230 240VAC 3 5 x 10 5 x 17 1 6 x 8 x 525 1 7 x 85 x 8 5
34. 75 75 m904 C WORD CLOCK SUPER CLOCK THRU BNC 75 x 256 D REMOTE CONNECTOR HD15 DC E REMOTE LOCAL SWITCH REMOTE LCD REMOTE CONTROL IS ACTIVATED LOCAL
35. SIndLTO SOTVNY SINALACISLNdN THIS Z HIZ 1 oONYTgd Honc J Nr Td MOWAT SAL SINdNISOTYNY x o q pogu specification ANALOG INPUT THD N OdB gain 1kHz 20dBu out 10dBu out OdBu out Intermodulation Distortion 20dBu out OdBu out Frequency Response 3dB Dynamic Range 20 22kHz bandwidth 20 22kHz bandwidth and A weighting filter Output Noise 20 22kHz bandwidth 20dB gain High gain mode Low gain mode 20 22kHz bandwidth and A weighting filter 20dB gain High gain mode Low gain mode Phase Deviation 20Hz to 20kHz lt 0 001 0 00075 typical lt 0 003 0 001 typical lt 0 009 0 005 typical SMTPE DIN 4 1 50Hz 7kHz lt 0 002 0 0015 typical lt 0 008 0 006 typical 3Hz 250Khz 112dB 115dB 89dBu 98dBu 91dBu 99dBu 10Hz to 100kHz Crosstalk any channel 100Hz 1kHz 20kHz Balanced Input CMRR 60Hz 1kHz 1OkHz Gain Range Low gain mode 0 5dB steps High gain mode 0 5dB steps Channel Tracking Accuracy Any channel Maximum Output Level Low gain mode balanced High gain mode balanced Maximum Input Level Balanced inputs Unbalanced inputs Impedances Balanced inputs Unbalanced inputs Balanced outputs 100dB 100dB 85dB gt 60dB gt 75dB gt 60dB 105 5dB to 20dB 95 5dB to 30dB
36. s Lock s Lock LCD m904 D Selecting Operating Control Room Outputs 1 m906 2 CR OUT 1 CR OUT 2 a SPKR SELECT 1 2 LED LED b m904 CR OUTI CR OUT2 2 3 CUE OUT 1 CALIBRATE
37. 14 1lbs 6 4kg 2 3lbs 1kg 6 5lbs 2 9kg
38. O The LCD Window 1 LOD advanced feautures accessing the cal modes m904 CAL m904 CAL LR MCUE LR BATLTAE A H DAC
39. PDIF 75 RCA 3 OTHER CONNECTIONS A WORDCLOCK SUPER CLOCK IN BNC 75 x 256 m904 m904 m904 DAW B WORD CLOCK LOAD SWITCH m904 X 256 m904 1M m904
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