TOA Electronics D-901 User Manual

INSTRUCTION MANUAL

DIGITAL MIXER

D-901

(Version 3)

Thank you for purchasing TOA's Digital Mixer.

Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ...............................................................................	6
2. GENERAL DESCRIPTION .............................................................................	7
3. FEATURES ..........................................................................................................	7
4. HANDLING PRECAUTIONS ..........................................................................	7
5. NOMENCLATURE AND FUNCTIONS
5.1. D-901 Digital Mixer
Front ..................................................................................................................	8
Rear .................................................................................................................	11
5.2. Optional Modules
5.2.1. D-921F Microphone/Line Input Module ..................................................	12
5.2.2. D-921E Microphone/Line Input Module .................................................	12
5.2.3. D-922F Microphone/Line Input Module ..................................................	13
5.2.4. D-922E Microphone/Line Input Module .................................................	13
5.2.5. D-936R Stereo Input Module .................................................................	13
5.2.6. D-923AE Digital Input Module ................................................................	14
5.2.7. D-937SP Digital Input Module ................................................................	14
5.2.8. D-971M Line Output Module ..................................................................	14
5.2.9. D-971E Line Output Module ..................................................................	14
5.2.10. D-971R Line Output Module ................................................................	15
5.2.11. D-972AE Digital Output Module ...........................................................	15
5.2.12. D-961SP Digital Output Module ...........................................................	15
5.2.13. D-981 Remote Control Module ............................................................	15
5.2.14. D-983 Remote Control Module ............................................................	16
5.2.15. D-984VC VCA Control Module ............................................................	16
6. SETTING BASICS
6.1. Setting Procedures ..........................................................................................	17
6.2. Setting Flowcharts
6.2.1. Input and output settings ........................................................................	18
6.2.2. Microphone bus settings ........................................................................	21
6.2.3. Preset memory settings .........................................................................	21
6.2.4. Utility settings .........................................................................................	22
6.3. Setting Keys and Knob ....................................................................................	23
6.4. Setting Screen Displays ...................................................................................	24
7. INPUT/OUTPUT GAIN SETTINGS
7.1. Input and Output Channel Control Section Settings ........................................	25
7.2. Input/Output Gain Setting Screen Operation ...................................................	25
7.3. Input/Output Channel Gain Setting Screen Operation .....................................	25

8.INPUT-RELATED SETTINGS

8.1. Phantom Power ON/OFF Settings (Only with D-921E or D-921F module) ..... 26

	8.2. PAD (Input Sensitivity) Settings (Only with D-921E or D-921F module) ..........	26
	8.3. Line Input Mode Selection (Only with D-936R module) ...................................	26
	8.4. Channel Status Verification (Only with D-923AE or D-937SP module)
	8.4.1. Input signal status verification ................................................................	27
	8.4.2. Sampling frequency verification .............................................................	27
	8.4.3. Pre-emphasis verification ......................................................................	27
	8.5. Line (Stereo) Input Selection (Only with D-936R or D-937SP module) ...........	28
	8.6. Input Trim Settings
2	8.6.1. Input trim gain settings ...........................................................................	28

8.6.2. Input trim polarity settings ......................................................................	28
8.7. High-Pass Filter Settings
8.7.1. Cutoff frequency settings .......................................................................	29
8.7.2. Q settings ...............................................................................................	29
8.8. Equalizer Settings
8.8.1. Gain settings ..........................................................................................	30
8.8.2. Center frequency settings ......................................................................	30
8.8.3. Q settings ...............................................................................................	30
8.9. Compressor/Auto-Leveler Mode Selection ......................................................	31

8.10.Compressor Settings

(only when the compressor mode is selected in Section 8.9.)

8.10.1. Threshold level settings .......................................................................	31
8.10.2. Ratio settings .......................................................................................	32
8.10.3. Attack time settings ..............................................................................	32
8.10.4. Release time settings ...........................................................................	32
8.10.5. Makeup gain settings ...........................................................................	32

8.11.Auto-Leveler Settings

(only when the auto-leveler mode is selected in Section 8.9.)

8.11.1. Target level settings .............................................................................	33
8.11.2. Maximum gain settings ........................................................................	33
8.11.3. Attack time settings ..............................................................................	33
8.11.4. Release time settings ...........................................................................	34
8.12. Level Sense Settings
8.12.1. Attack time settings ..............................................................................	34
8.12.2. Release time settings ...........................................................................	34
8.13. Gate Settings
8.13.1. Threshold level settings .......................................................................	35
8.13.2. Hysteresis settings ...............................................................................	35
8.13.3. Depth settings ......................................................................................	35
8.13.4. Hold time settings ................................................................................	35
8.13.5. Attack time settings ..............................................................................	35
8.13.6. Release time settings ...........................................................................	35
8.14. Auto-Mixing Group Settings .............................................................................	37
8.15. Ducker Settings
8.15.1. Priority settings ....................................................................................	38
8.15.2. Attenuation settings .............................................................................	38
8.15.3. Attack time settings ..............................................................................	39
8.15.4. Release time settings ...........................................................................	39
8.16. NOM Attenuation ON/OFF Settings .................................................................	39
8.17. Input Channel Gain Settings ............................................................................	40
8.18. Input Channel Group Trim Gain Settings (Only when Group is set) ................	40
8.19. Bus Assignment and Crosspoint Gain Settings
8.19.1. Bus assignment settings ......................................................................	41
8.19.2. Crosspoint gain settings .......................................................................	41
9. OUTPUT SETTINGS
9.1. Output Channel Gain Settings .........................................................................	42
9.2. Output Channel Group Trim Gain Settings (Only when Group is set) .............	42
9.3. Crossover Settings (Only when Crossover function is enabled)
9.3.1. Slope settings ........................................................................................	43
9.3.2. Cutoff frequency settings .......................................................................	44
9.3.3. Q settings ...............................................................................................	44
9.3.4. Q2 settings .............................................................................................	44
9.3.5. Crossover gain settings .........................................................................	44
9.3.6. Crossover filter polarity settings .............................................................	44
9.4. Filter Settings ...................................................................................................	45

3

9.4.1. Parametric equalizer ..............................................................................	47
9.4.2. High-pass filter .......................................................................................	47
9.4.3. Low-pass filter ........................................................................................	48
9.4.4. High shelving filter ..................................................................................	48
9.4.5. Low shelving filter ..................................................................................	48
9.4.6. Horn equalizer ........................................................................................	49
9.4.7. Notch filter ..............................................................................................	49
9.4.8. All-pass filter ..........................................................................................	49
9.5. Compressor Settings
9.5.1. Threshold level settings .........................................................................	50
9.5.2. Ratio settings .........................................................................................	50
9.5.3. Attack time settings ................................................................................	51
9.5.4. Release time settings .............................................................................	51
9.5.5. Makeup gain settings .............................................................................	51
9.6. Delay Time Settings .........................................................................................	51
10. MICROPHONE BUS SETTINGS
10.1. Feedback Suppression Settings
10.1.1. Dynamic mode settings ......................................................................	52
10.1.2. Auto mode activation .........................................................................	53
10.1.3. Filter number settings ........................................................................	53
10.1.4. Dynamic mode filter initialization ........................................................	53
10.1.5. Auto mode filter initialization ..............................................................	53
10.2. Feedback Suppression Filter Setting Confirmation
10.2.1. Mode confirmation .............................................................................	54
10.2.2. Frequency confirmation .....................................................................	54
10.2.3. Filter gain confirmation .......................................................................	54
10.2.4. Q confirmation ....................................................................................	54
10.3. Effect (Echo) Settings
10.3.1. Echo gain settings ..............................................................................	55
10.3.2. Feedback ratio settings ......................................................................	55
10.3.3. Feedback delay settings ....................................................................	55
10.3.4. Initial echo (pre-) delay settings .........................................................	56
10.3.5. Low-pass filter frequency settings ......................................................	56
10.3.6. Low-pass filter Q settings ...................................................................	56
10.4. Bus Assignment and Crosspoint Gain Settings
(Microphone Bus → Output Channel)
10.4.1. Bus assignment settings ....................................................................	56
10.4.2. Crosspoint gain settings .....................................................................	56
11. PRESET MEMORY SETTINGS
11.1. Preset Memory Save .....................................................................................	57
11.2. Preset Memory Recall ....................................................................................	58
11.3. Preset Memory Delete ...................................................................................	58
11.4. Preset Memory Crossfade Time Settings ......................................................	59
11.5. Initial Preset Memory Selection .....................................................................	60
11.6. Configuration Save ........................................................................................	60
12. UTILITY SETTINGS
12.1. Stereo Link Settings .......................................................................................	61
12.2. Group Settings ...............................................................................................	61
12.3. Crossover Configuration Settings ..................................................................	62
12.4. NOM Attenuation Settings .............................................................................	64

12.5.Contact Input/Output Settings

(Available only when D-981, D-983 or D-984VC is used)

12.5.1. Function assignment to the input contact ..........................................

65

4

12.5.2. Function assignment to the output contact ........................................	67
12.6. Protect Settings ..............................................................................................	68
12.7. RS-232C Port Settings
12.7.1. Control mode selection ......................................................................	70
12.7.2. RS-232C transmission rate settings ..................................................	70
12.8. All Input/Output Channel Gain Confirmation ..................................................	71
12.9. All Input/Output VCA Status Confirmation
(Only when the D-984VC is used) .................................................................	71
12.10. Module Type Confirmation
12.10.1. Individual slots confirmation .............................................................	72
12.10.2. All slots confirmation ........................................................................	73
12.11. Cooling Fan Operating Status Confirmation ..................................................	73
12.12. Firmware Version Confirmation .....................................................................	73
13. RESTORING FACTORY DEFAULT SETTINGS .....................................	74
14. FIRMWARE UPDATE ......................................................................................	74
15. RACK MOUNTING ...........................................................................................	76
16. CONNECTIONS
16.1. Connection Example 1 ...................................................................................	77
16.2. Connection Example 2 (Broadcasting to two separate zones) ......................	77
16.3. Removable Terminal Plug Connection ..........................................................	79
16.4. Ferrite Cable Clamp Attachment (For D-972AE only) ....................................	79
16.5. Connections of the D-984VC
16.5.1. Connecting to the D-984VC ...............................................................	80
16.5.2. Input and output channel VCA controls .............................................	80
16.5.3. Contact controls .................................................................................	81
17. BLOCK DIAGRAM ...........................................................................................	82
18. LEVEL DIAGRAMS
18.1. Analog Input/Output .......................................................................................	84
18.2. Digital Input/Output ........................................................................................	84
19. PARAMETER SETTING ITEMS AND SETTING RANGES ................	85
20. SPECIFICATIONS
20.1. D-901 Digital Mixer ........................................................................................	89
20.2. D-921F Microphone/Line Input Module (Optional) .........................................	90
20.3. D-921E Microphone/Line Input Module (Optional) .........................................	90
20.4. D-922F Microphone/Line Input Module (Optional) .........................................	90
20.5. D-922E Microphone/Line Input Module (Optional) .........................................	91
20.6. D-936R Stereo Input Module (Optional) ........................................................	91
20.7. D-923AE Digital Input Module (Optional) .......................................................	91
20.8. D-937SP Digital Input Module (Optional) .......................................................	91
20.9. D-971M Line Output Module (Optional) .........................................................	92
20.10. D-971E Line Output Module (Optional) ..........................................................	92
20.11. D-971R Line Output Module (Optional) .........................................................	92
20.12. D-972AE Digital Output Module (Optional) ....................................................	92
20.13. D-961SP Digital Output Module (Optional) ....................................................	93
20.14. D-981 Remote Control Module (Optional) .....................................................	93
20.15. D-983 Remote Control Module (Optional) .....................................................	94
20.16. D-984VC VCA Control Module (Optional) ......................................................	94

5

1. SAFETY PRECAUTIONS

•Be sure to read the instructions in this section carefully before use.

•Make sure to observe the instructions in this manual as the conventions of safety symbols and messages regarded as very important precautions are included.

•We also recommend you keep this instruction manual handy for future reference.

Safety Symbol and Message Conventions

Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling. Before operating your product, read this manual first and understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.

WARNING

CAUTION

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

WARNING

CAUTION

When Installing the Unit

•Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.

•Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified may result in fire or electric shock.

•Do not cut, kink, otherwise damage nor modify the power supply cord. In addition, avoid using the power cord in close proximity to heaters, and never place heavy objects -- including the unit itself -- on the power cord, as doing so may result in fire or electric shock.

When the Unit is in Use

•Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the unit in this condition as this may cause fire or electric shock.

·If you detect smoke or a strange smell coming from the unit.

·If water or any metallic object gets into the unit

·If the unit falls, or the unit case breaks

·If the power supply cord is damaged (exposure of the core, disconnection, etc.)

·If it is malfunctioning (no tone sounds.)

•To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to your nearest TOA dealer.

•Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they accidentally spill into the unit, this may cause a fire or electric shock.

When Installing the Unit

•Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.

•When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.

•Do not block the fan exhaust vent on the unit's rear and the ventilation slots on the bottom. Doing so may cause heat to build up inside the unit and result in fire.

•Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock.

•When installing the unit in an equipment rack, observe the following instructions. Failure to do so may result in fire or personal injury.

·Install the rack on a solid and stable surface. Then, secure it with anchor bolts or make other appropriate arrangements to prevent it from falling down or moving.

·Use the screws supplied with the unit to mount on TOA's rack.

·The AC outlet to which the unit's AC power cable is connected must have allowable current capacity over the unit's current consumption.

When the Unit is in Use

•Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the unit unused for 10 days or more. Doing otherwise may cause a fire or electric shock.

6

2. GENERAL DESCRIPTION

TOA's D-901 is a 19-inch rack-mounted (3U high) digital mixer configured with 12 inputs, 8 buses, and 8 outputs. It features signal processing functions necessary for sound systems such as feedback suppression and auto-mixing. All functional parameters can be set at the unit*. Settings can be stored in the unit's internal memory as "preset memory" and can be recalled using the front panel-mounted operation keys.

*Can also be set at a PC using the setting software, which can be downloaded from our website "http://www.toa-products.com/international/".

3. FEATURES

•Acoustic feedback can be suppressed through simple operation.

•Auto-Mixing functions (Ducker*1 and NOM Attenuation*2) automatically adjust the input signal volume.

•Signals are digitally processed, ensuring high-accuracy sound parameter settings.

•All settings can be performed at the unit using the LCD screen and setting keys and knobs located on the front panel. The settings can also be made at a PC using the dedicated software.

•Modular construction permits flexible configuration of inputs and outputs, from 2-IN/4-OUT to 12-IN/8-OUT systems.

•Up to 16 preset patterns can be stored in memory, which can be easily recalled from either the unit or connected external equipment.

•An RS-232C port permits remote control of the unit using an AMX or Crestron controller, or similar external equipment. The control protocol is available for download at our website http://www.toaproducts.com/international/.

•A protect function prevents accidental changes of front panel key settings.

•The use of an optional D-981 or D-983 Remote Control Module, or an optional D-984VC VCA Control Module permits easy remote operation of volume control and preset memory recall.

•The use of an optional D-984VC VCA Control Module permits the sound volume to be adjusted from remote locations using the faders or volume controls.

*1 Automatically adjusts all channel gains in response to input signal level. (Refer to p. 38.)

*2 Automatically adjusts the input gain of open microphones corresponding to the number of open microphones in the system. (Refer to p. 39.)

Notes

•AMX is a trademark of AMX Corporation.

•Crestron is a trademark of Crestron Electronics, Inc.

4. HANDLING PRECAUTIONS

•Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

•Use the unit in locations where the temperature is between +5 to +40 °C (no condensation) and the humidity is less than 90%.

•The D-901 is a precision audio component. To prevent failure, avoid locations where the unit may be exposed to strong shocks or vibrations.

•To clean, be sure to first switch off the power, then wipe with a dry cloth. When extremely dirty, use a soft cloth dampened in neutral detergent. Never use benzene, thinner or chemically-treated towels, which may damage the unit's finish.

7

5. NOMENCLATURE AND FUNCTIONS

5.1. D-901 Digital Mixer

[Front]

		Output channel	1	2
Parameter input section	Input channel control section	control section
(described below)	(Refer to p. 9.)	(Refer to p. 10.)

DIGITAL MIXER model D-901
		1						7	PEAK		1
		2						8	+12dB		2
									+6dB
		3						9	0dB		3
	CHANGE								-6dB
UTILITY	PARAMETER	4						10			4
	LOCK								-12dB			POWER
		5						11			5
									-20dB
								SEL
PRESET	ON	6						12	-40dB		6
		SEL	SIG	0N	0N	SIG	SEL
	PUSH-ENTER										7	ON
												OFF
	ENTRY SECTION							FBS			8
1	5								0N	SIG	SEL
2	6
							ON	EFFECT			ON
3	7
4	8
	PRESET			INPUT				MIC BUS	OUTPUT

Preset memory selection section								Microphone bus control section
(Refer to p. 9.)									(Refer to p. 10.)
1. Power switch [POWER,				ON/				OFF]	2. Power Indicator
The unit's power switches ON when this switch is									Lights when the power is switched ON.
pressed, and switches OFF when pressed again.

Parameter Input Section

3

4

5

6

7

	CHANGE
UTILITY	PARAMETER
	LOCK
PRESET	ON
	PUSH-ENTER

8 9 10 11 12

3.Utility Indicator

Remains lit during selection of the utility function.

4.Utility Key [UTILITY]

Selects the utility function. Pressing this key displays the utility function setting screen on the LCD screen (5). (Refer to p. 61.)

5.LCD Screen

When the function key is pressed, its corresponding setting screen is displayed on this screen. If the unit's internal cooling fan malfunctions, the "ERROR indication appears on the screen even during setting operation. In this case, contact your TOA dealer.

6.System Lock Indicator [LOCK]

Lights when the protect function is enabled. (For more information on the protect function, refer to

p. 68.)

Flashes when the D-901 is communicating with a PC.

7.Setting Knob [CHANGE PARAMETER, PUSHENTER]

This knob can be rotated to change parameters or select setting contents, and also operates as a push switch. Pressing the knob when the [OK?] indication is displayed on the LCD screen (5) enables the corresponding function.

8.Preset Indicator

Remains lit during preset memory selection.

9.Preset Key [PRESET]

Recalls the settings stored in preset memory or saves the current parameters. The preset memory setting screen appears on the LCD (5) when this key is pressed. (Refer to p. 59.)

10.Screen Shift Keys [ ]

Pressing these keys change the setting items on the LCD (5).

11.Function ON/OFF Indicator

Lights when the parameter shown on the LCD (5) is enabled (ON).

12.Function ON/OFF Key [ON]

Parameters displayed on the LCD (5) are enabled (ON) when this key is pressed, and disabled (OFF) when pressed again.

8

Preset Memory Selection Section

13

1	5
2	6
3	7
4	8

PRESET

14

13.Preset Memory Selector Keys [1 – 8]

Recall preset memory patterns 1 – 8. To recall, press the desired Preset Memory Selector key, then press the Setting knob (7).

14.Preset Memory Indicators

The LED corresponding to the currently selected Preset Memory Selection key is illuminated.

Input Channel Control Section

15

1	7
2	8
3	9
4	10
5	11
6	12
SEL SIG 0N	0N SIG SEL

ON

INPUT

1617 18 19

15.Input Channel Selector Keys [1 – 12]

Used to select the input channel for sound volume adjustment or parameter setting. The Input channel indicator [SEL] (16) lights when a key is pressed, causing the corresponding channel number to be displayed on the setting screen.

16.Input Channel Indicators [SEL, SIG, ON]

•SEL: Lights when the input channel is selected.

•SIG

Indicates the input signal level in two colors (red and green). The status of indicator shows as follows depending on the input signal levels.

Red: Signal level is 17 dB or more above the rated input signal level.

Green: Signal level is between –40 dB and +17 dB on the basis of the rated input signal level.

OFF: Signal level is lower than –40 dB below the rated input signal level.

LED Input signal level

Red

+17 dB

Rated input signal level

Green

–40 dB

OFF

Notes

·The indicator lights red when the signal level is set too high. In such cases, decrease the output level of connected equipment so that the indicator lights green.

·Only when the D-923AE or the D-937SP Digital input module is used, the input channel indicator flashes red if a status error occurs.

•ON: Lights when the channel is selected and active.

17.Input Volume Control [INPUT]

Adjusts the gain of the input channel selected with the Input Channel Selector keys (15).

18.Input Channel ON/OFF Key [ON]

Enables or disables the channel selected with the Input Channel Selector keys (15).

19.Input Channel ON/OFF Indicator

Lights continuously to indicate that the input channel selected with the Input Channel Selector keys (15) is enabled (ON).

9

Microphone Bus Control Section

SEL

20

21

FBS

22

EFFECT

23

24

MIC BUS

20.Microphone Bus Selector Key [SEL]

Used to set the microphone bus parameters or adjust the volume. Pressing this key causes the

Microphone bus indicator (21) to light, and allows feedback suppression (p. 54), effect (echo) (p. 55), and bus assignment (p. 56) to be set on the LCD screen.

21.Microphone Bus Indicator

Remains lit while the microphone bus is selected.

22.Feedback Suppression Indicator [FBS]

Remains lit while the feedback suppression function is enabled.

23.Effect Key [EFFECT]

The effect (echo) function is enabled when this key is pressed, and the effect (echo) parameters are displayed on the LCD screen, allowing settings to be changed. Pressing the key again disables the effect (echo) function. (Refer to p. 55.)

24.Effect Indicator

Remains lit while the effect (echo) function is enabled.

Output Channel Control Section

	PEAK	1
	+12dB	2
	+6dB
25	0dB	3
	-6dB	4
			28
	-12dB	5
	-20dB
	-40dB	6
26		7
		8
	0N	SIG SEL
		ON	29
27			30

OUTPUT

25.Output Signal Level Meter

Indicates the signal level of the channel selected with the Output Channel Selector keys (28).

26.Output Channel Indicators [ON, SIG, SEL]

•ON: Lights when the channel is active.

•SIG

Indicates the output signal level in two colors (red and green). The status of indicator shows as follows depending on the output signal levels.

Red: Signal level is 17 dB or more above the rated output signal level.

Green: Signal level is between –40 dB and +17 dB on the basis of the rated output signal level.

OFF: Signal level is lower than –40 dB below the rated output signal level.

LED Output signal level

Red

+17 dB

Rated output signal level

Green

–40 dB

OFF

Note

The indicator lights red when the signal level is set too high. In such cases, attenuate the unit's output level so that the indicator lights green.

• SEL: Lights when the output channel is selected.

27.Output Volume Control [OUTPUT]

Adjusts the gain of the output channel selected with the Output Channel Selector keys (28).

28.Output Channel Selector Keys [1 – 8]

Used to select the output channel for sound volume adjustment, parameter setting or Level meter indication (25). The Output Channel indicator [SEL] (26) lights when the key is pressed, permitting parameter setting, volume adjustment with the Output volume control (27) or Level meter (25) signal level indication.

29.Output Channel ON/OFF Key [ON]

Enables or disables the channel selected with the Output Channel Selector keys (28).

30.Output Channel ON/OFF Indicator

Lights continuously to indicate that the output channel selected with the Output Channel Selector keys (28) is enabled (ON).

10

[Rear]

31	32	33	34	35	36	37	38	39	40	41
	RS-232C
DIGITAL MIXER	SIGNAL
model D-901	GND
TOA Corporation
MADE IN JAPAN
42		Slot 9	Slot 8	Slot 7	Slot 6	Slot 5	Slot 4	Slot 3	Slot 2	Slot 1
			Outputs	Outputs	Inputs 11	Inputs 9	Inputs	Inputs	Inputs	Inputs
			5 – 8	1 – 4	& 12 or	& 10 or	7 & 8	5 & 6	3 & 4	1 & 2
					Outputs	Outputs
					5 – 8	1 – 4

Control module slot	Output module slot	Input module slot
	Input & output module slot

	31. Cooling Fan	37.Input/Output Module Slot
	CAUTION	Slot for input channels 9 and 10. Inserting an
		output module here provides output signals for
		channels 1 – 4.
	Do not block the fan exhaust vent. Doing so
	may cause heat to build up inside the unit and	38. Input Module Slot
	result in fire.
		Slot for input channels 7 and 8.
	32. RS-232C Communication Port	39. Input Module Slot
	A communications connector for a personal	Slot for input channels 5 and 6.
	computer (PC) or other control equipment.

40. Input Module Slot

33. Control Module Slot Slot for input channels 3 and 4. The control module's dedicated slot.

41. Input Module Slot

34. Output Module Slot Slot for input channels 1 and 2. Slot for output channels 5 – 8.

		42. AC Inlet
35.	Output Module Slot	Connect this inlet to the wall AC outlet using the
	Slot for output channels 1 – 4.	supplied power cord.
36.	Input/Output Module Slot
	Slot for input channels 11 and 12. Inserting an	Note
	output module here provides output signals for	Slots 5 – 8 accommodate only two D-971M and/or D-
	channels 5 – 8.	971E Line Output Modules together or independently
		in total.

11

5.2. Optional Modules

Notes

•Make sure that the power is switched OFF before attaching or detaching modules.

•To avoid failures due to static electricity, do not touch the parts or terminals on the circuit board of both the unit and module.

•Ensure that the module is installed and secured with screws in the correct position.

•Cover idle slots with the blank panels attached to the unit as shipped by the factory.

•Two silver slotted screws at the top and bottom of the front panel are handles used for module detachment. Never rotate them because they do not function as screws.

MODULE INPUT MIC/LINE

Handle

1

GND LIFT

5.2.1. D-921F Microphone/Line Input Module

43. Monaural Input Terminal [1, 2] (XLR-3-31 equivalent)

INPUTMIC/LINE				Electronically-balanced input terminal. (Pin 1:
			43	Ground; Pin 2: Hot; Pin 3: Cold)
		1		Use XLR-3-12C or equivalent for connection.	2: Hot
MODULE
				Input sensitivity (–50/–36/–10/+4 dB) and
/ 50–[	GND LIFT		44	phantom power (+15 V) ON/OFF can be set by	3: Cold
/ 36–	NORMAL			way of the front panel setting screen.
/ 10–					1: Ground
dB] +4
		2		44. Ground Lift Switch [GND LIFT/NORMAL]
				Hum noise may be generated due to ground loops created when the unit
	GND LIFT			is connected to other equipment. Setting the switch to the GND LIFT
	NORMAL			position cuts the ground loop.
model	1 : E
	2 : H
	3	: C
921F-D
	ACCESSORY I.T.E 78CK
5.2.2. D-921E Microphone/Line Input Module
MIC/LINE				45. Monaural Input Terminal [1, 2]
			45	Electronically-balanced, removable terminal block. (H: Hot; C: Cold; E:
INPUT	E			Ground)
–[ MODULE	C	1		Input sensitivity (–50/–36/–10/+4 dB) and phantom power (+15 V)
	H
				ON/OFF can be set by way the front panel setting screen.
/ 36– / 50	GND LIFT		46
	NORMAL			46. Ground Lift Switch [GND LIFT/NORMAL]
10–
+4 /	E			Hum noise may be generated due to ground loops created when the unit
dB]
				is connected to other equipment. Setting the switch to the GND LIFT
	C	2
	H
				position cuts the ground loop.
	GND LIFT			Note
	NORMAL			Be sure to use the supplied removable terminal plugs (3P) for
-D model
				connection.
921E
	ACCESSORY I.T.E 78CK

12

5.2.3. D-922F Microphone/Line Input Module

MIC/LINE

47. Monaural Input Terminal [1, 2] (XLR-3-31 equivalent)

Electronically-balanced input terminal. (Pin 1:

47

Ground; Pin 2: Hot; Pin 3: Cold)

2: Hot

INPUT

MODULE

1

Use XLR-3-12C or equivalent for connection.

3: Cold

ON

OFF

: PHANTOM

48

1: Ground

NORMAL

LIFT

: GND

MIC

LINE

+4dB(LINE)

-36dB(MIC)

-10dB(LINE)

-50dB(MIC)

48. Input Sensitivity Switch [PHANTOM, GND LIFT, MIC/LINE]

2

4-pole switch. Enables phantom power (+15 V; ON/OFF, enabled only

when set to the MIC position), ground lift and input sensitivity.

ON

OFF

: PHANTOM

Input sensitivity: –36 or –50 dB (MIC mode) / –10 or +4 dB (LINE mode)

NORMAL

LIFT

: GND

MIC

LINE

+4dB(LINE)

Dmodel

-10dB(LINE)

-36dB(MIC)

: E

1

-50dB(MIC)

2

: H

3 : C

922F-

ACCESSORY I.T.E 78CK

ON

OFF

: PHANTOM

NORMAL

LIFT

: GND

MIC

LINE

+4dB(LINE)

-36dB(MIC)

-10dB(LINE)

-50dB(MIC)

5.2.4. D-922E Microphone/Line Input Module

49. Monaural Input Terminal [1, 2]

MIC/LINE

49

Electronically-balanced, removable terminal block. (H: Hot; C: Cold; E:

Ground)

INPUT

E

C

1

Note

MODULE

H

Be sure to use the supplied removable terminal plugs (3P) for

ON

OFF

: PHANTOM

50

connection.

NORMAL

LIFT

: GND

MIC

LINE

+4dB(LINE)

-10dB(LINE)

-36dB(MIC)

-50dB(MIC)

50. Input Sensitivity Switch [PHANTOM, GND LIFT, MIC/LINE]

E

C

2

4-pole switch. Enables phantom power (+15V; ON/OFF, enabled only

H

when set to the MIC position), ground lift and input sensitivity.

ON

OFF

: PHANTOM

Input sensitivity: –36 or –50 dB (MIC mode) / –10 or +4 dB (LINE mode)

NORMAL

LIFT

: GND

MIC

LINE

+4dB(LINE)

922E-D model

-10dB(LINE)

-36dB(MIC)

-50dB(MIC)

ON

OFF

: PHANTOM

ACCESSORY I.T.E 78CK

NORMAL

LIFT

: GND

MIC

LINE

+4dB(LINE)

-36dB(MIC)

-10dB(LINE)

-50dB(MIC)

5.2.5. D-936R Stereo Input Module

51. Stereo Input Terminal [1L/1R, 2L/2R, 3L/3R, 4L/4R]

	STEREO			Unbalanced, RCA pin jack stereo input terminals. Either a single stereo
	SELECT	1R	1L	input can be selected from the 4 available stereo inputs or all 4 stereo
			51	channels can be mixed.
	INPUT			Mode setting and stereo selection are performed at the front panel
	– [ MODULE	2R	2L
				setting screen. They can also be remotely selected by way of connected
				external equipment through the use of the control module.
	dB] 10	3R	3L	Input signal level: –10 dB
		4R	4L
	936R-D model
		ACCESSORY I.T.E 78CK

13

5.2.6. D-923AE Digital Input Module

MODULEINPUTDIGITAL

DIGITAL IN

52

1/2

AES/EBU

923AE-D model

5.2.8. D-971M Line Output Module

OUTPUT LINE		55
MODULE		1
dB] [+4
		2
		3
model		4
	2	: H
	1	: E
-D	3	: C
971M
	ACCESSORY I.T.E 78CK

52.AES/EBU Digital Input Terminal [AES/EBU, 1/2]

(XLR-3-31 equivalent)

Digital input terminal of AES/EBU format. (Pin 1: Ground; Pin 2: Signal; Pin 3: Signal)

2:Signal

3:Signal

1:Ground

Use the XLR-3-12C or its equivalent for connection.

Note

Use a digital audio cable with characteristic impedance of 110 Ω for connection.

55.Monaural Output Terminal [1, 2, 3, 4] (XLR-3- 32 equivalent)

Electronically-balanced output terminal. (Pin 1: Ground; Pin 2: Hot; Pin 3: Cold)

2:Hot

3:Cold

1:Ground

Output signal level: +4dB

Use XLR-3-11C or equivalent for connection.

5.2.9. D-971E Line Output Module

5.2.7. D-937SP Digital Input Module

DIGITAL	DIGITAL IN	53
INPUT	OPTICAL
MODULE	1
	2

54

3

4

937SP-D model	COAXIAL

53.Optical Input Terminal [OPTICAL, 1,2]

Optical input terminal of S/PDIF format.

54.Coaxial Input Terminal [COAXIAL 3, 4]

Coaxial input terminal of S/PDIF format.

Notes

•Use a coaxial cable with characteristic impedance of 75 Ω for connection.

•One of four line inputs (stereo) is selected. Input selection is performed at the front panel-

mounted setting screen.

	OUTPUT LINE	E	56
	MODULE	C	1
		H
	[+4	E
	dB]
		C	2
		H
		E
		C	3
		H
		E
		C	4
	971E-D model	H
		ACCESSORY I.T.E 78CK

56.Monaural Output Terminal [1, 2, 3, 4]

Electronically-balanced, removable terminal block. (H: Hot; C: Cold; E: Ground.)

Output signal level: +4 dB

Note

Be sure to use the supplied removable terminal

plugs (3P) for connection.

14

5.2.10. D-971R Line Output Module

OUTPUT LINE
–[ MODULE	2(R)	1(L)	57
dB] 10

4(R) 3(L)

971R-D model

ACCESSORY I.T.E 78CK

57.Monaural Output Terminals [1(L), 2(R), 3(L), 4(R)]

Unbalanced, RCA pin jack output terminals. Each output is equipped with a 2-channel splitter. Output signal level: –10 dB

5.2.11.D-972AE Digital Output Module

MODULEOUTPUTDIGITAL

DIGITAL OUT

58

1/2

AES/EBU

3/4

D model	AES/EBU
972AE-

58.AES/EBU Digital Output Terminal [AES/EBU, 1/2] (XLR-3-32 or its equivalent)

Digital output terminal of AES/EBU format. (Pin

1:Ground; Pin 2: Signal; Pin 3: Signal)

1:Ground

3:Signal

2:Signal

Use the XLR-3-11C or its equivalent for connection.

Note

Use the digital audio cable with characteristic impedance of 110 Ω for connection.

5.2.12. D-961SP Digital Output Module

DIGITAL

DIGITAL OUT

OUTPUT	OPTICAL	59
		60
MODULE	1

COAXIAL

OPTICAL

2

COAXIAL

961SP-D model

59.Optical Output Terminal [OPTICAL 1, 2]

Optical output terminal of S/PDIF format.

60.Coaxial Output Terminal [COAXIAL 1, 2]

Coaxial input/output terminal of S/PDIF format.

Note

Use a coaxial cable with characteristic impedance of 75 Ω for connection.

Each pair of the S/PDIF optical output and the coaxial RCA pin jack output delivers output in parallel.

5.2.13. D-981 Remote Control Module

REMOTE		61
CONTROL	C
	1
	2
MODULE	3
	6
	4	INPUT
	5
	7
	8	62
	C

	C
	1
	2
	3
	4
	OUTPUT
	5
	6
	7
	8
981-D model	C

ACCESSORY I.T.E 78CK

61.Contact Input Terminal [INPUT, C, 1, 2, 3, 4, 5, 6, 7, 8, C]

Removable terminal block, 8-circuit contact input terminal. Individual contact functions are assigned on the front panel setting screen.

Note

Be sure to use the supplied removable terminal plugs (10P) for connection.

62.Contact Output Terminal [OUTPUT, C, 1, 2, 3, 4, 5, 6, 7, 8, C]

Removable terminal block, 8-circuit contact output terminal. Individual contact functions are

assigned on the front panel setting screen.

15

5.2.14. D-983 Remote Control Module

MODULE CONTROL REMOTE

983-D model

	CTRL OUT					CTRL IN
			1-4			1-6
			5-8			7-12				ONLY 901-D FOR UNITS CONTROL
			9-12			13-18
			13-16			19-24

63

64

63. Contact Input Terminal [CTRL IN, 1-6, 7-12, 13-18, 19-24]

Six-circuit RJ45 contact input terminals. Assign functions to each contact on the front panel-mounted setting screen.

	Pin No.		CTRL IN
		1-6	7-12	13-18	19-24
	1	IN 1	IN 7	IN 13	IN 19
	2	IN 2	IN 8	IN 14	IN 20
	3	IN 3	IN 9	IN 15	IN 21
	4	IN 6	IN 12	IN 18	IN 24
	5	IN 5	IN 11	IN 17	IN 23
	6	IN 4	IN 10	IN 16	IN 22
	7	C	C	C	C
	8	C	C	C	C

64. Contact Output Terminal [CTRL OUT,1-4, 5-8, 9-2, 13-16]

Four-circuit RJ45 contact output terminals. Assign functions to each contact on the front panel-mounted setting screen.

	Pin No.		CTRL OUT
		1-4	5-8	9-12	13-16
	1	OUT 1	OUT 5	OUT 9	OUT 13
	2	C 1	C 5	C 9	C 13
	3	OUT 2	OUT 6	OUT 10	OUT 14
	4	C 3	C 7	C 11	C 15
	5	OUT 3	OUT 7	OUT 11	OUT 15
	6	C 2	C 6	C 10	C 14
	7	OUT 4	OUT 8	OUT 12	OUT 16
	8	C 4	C 8	C 12	C 16

5.2.15. D-984VC VCA Control Module

VCA

65. Input channel VCA Terminal [IN CH, 1-6, 7-12]

RJ45 VCA terminals.

CONTROL

VCA

terminals

Pin No.

IN CH

7-12

1-4

1-6

These

RJ45

VCA

1-6

CTRL IN

IN CH

MODULE

5-8

7-12

CONTROL

correspond to 12 input channels.

1

IN CH 1

IN CH 7

4

IN CH 6

IN CH 12

2

IN CH 2

IN CH 8

67

UNITS

65

3

IN CH 3

IN CH 9

5

IN CH 5

IN CH 11

6

IN CH 4

IN CH 10

68

-DFOR

66

7

V

V

ONLY 901

8

C

C

66. Output Channel VCA Terminal [OUT CH, 1-4, 5-8]

1-4

1-4

model

5-8

5-8

RJ45 VCA terminals.

CTRL OUT

OUT CH

Pin No.

OUT CH

These

RJ45

VCA

terminals

-D

1-4

5-8

984VC

correspond to 8 output channels.

1

OUT CH 1

OUT CH 5

2

OUT CH 2

OUT CH 6

3

OUT CH 3

OUT CH 7

4

C

C

5

V

V

6

OUT CH 4

OUT CH 8

7

V

V

8

C

C

67. Control Input Terminal [CTRL IN, 1-4, 5-8]

RJ45 Control Input terminals. These RJ45 Control Input terminals correspond to 8 control inputs.

Pin No.	CTRL IN
	1-4		5-8
1	CTRL IN 1		CTRL IN 5
2	C		C
3	CTRL IN 2		CTRL IN 6
4	C		C
5	CTRL IN 3		CTRL IN 7
6	C		C
7	CTRL IN 4		CTRL IN 8
8	V		V

68. Control Output Terminal [CTRL OUT, 1-4, 5-8]

RJ45 Control output terminals. These RJ45 Control output terminals correspond to 8 control outputs.

	Pin No.	CTRL OUT
		1-4	5-8
	1	CTRL OUT 1	CTRL OUT 5
	2	C 1	C 5
	3	CTRL OUT 2	CTRL OUT 6
	4	C 3	C 7
	5	CTRL OUT 3	CTRL OUT 7
	6	C 2	C 6
	7	CTRL OUT 4	CTRL OUT 8
	8	C 4	C 8

16

6. SETTING BASICS

6.1. Setting Procedures

The D-901's functions need to be set using the front-mounted keys and knob according to scenes of use. After connecting all external equipment, check the following, then follow the procedures below to set each of the unit's functions.

Check to be sure that

•The required modules are correctly inserted.

•The power supply is correctly connected.

•The power indicator lights when the power switch is turned on.

Step 1. Set which input channel signal is transmitted to which output channel.

Because the factory default setting is made so that each input (1 – 12) is assigned to all outputs (1

– 8) via the Microphone Bus*, when a microphone, or CD player or other music player is connected to an input, its signals are output from all output terminals by simply increasing the corresponding input channel gain. Make input-to-output re-assignment according to scenes of use. * Refer to p. 82, Block Diagram.

(Refer to p. 41, Bus assignment settings.)

This setting can be performed in either of two ways: On the setting screen display or by way of the front-mounted keys.

Step 2. Set the input sensitivity.

When the D-921E or D-921F is installed, perform this setting by displaying the setting screen. (Refer to p. 26, PAD Settings.)

When the D-922E or D-922F is installed, perform this setting using its DIP switch. (Refer to p. 12 – 13.)

Set the sensitivity so that the front-mounted Input channel indicator [SIG] does not light red.

Step 3. Set the input channel gain.

(Refer to p. 25, Input/Output Gain Settings.)

This setting can be performed in any of three ways: On the setting screen display (two methods) or by way of the front-mounted keys.

Note: When using the D-984VC VCA Control Module, perform gain settings as well for the input channel to be remotely controlled.

Step 4. Set the output channel gain.

(Refer to p. 25, Input/Output Gain Settings.)

This setting can be performed in any of three ways: On the setting screen display (two methods) or by way of the front-mounted keys.

Note: When using the D-984VC VCA Control Module, perform gain settings as well for the output channel to be remotely controlled.

Step 5. Set individual functions as required.

(Refer to p. 18, Setting Flowcharts.)

Refer to the setting flowcharts for the appropriate setting method for the function to be used.

When using Stereo Link, Grouping and Crossover functions, first perform the required settings on the Utility setting screen.

17

Note

It is highly recommended that any changed parameters be immediately saved as preset memory on the Preset Memory setting screen. (Refer to p. 57, Preset Memory Save.) This permits the parameters of each function to be saved and protected, even if the power is switched off. All currently saved parameters can be recalled and reproduced when the power is switch on again. (Refer to p. 60, Initial Preset Memory Selection.) Settings need not be saved when temporarily setting or changing parameters.

6.2. Setting Flowcharts

All the functions described hereinafter can also be set at a PC using the dedicated software. Please access our website "http://www.toa-products.com/international/" for its download.

In the following charts, the Screen shift keys [		] are used to move vertically (next screen display) and the
shift keys [	] to move horizontally between the solid line setting screen boxes (			) . For movements
within the dotted line setting screen boxes (		) and parameter settings for each setting screen, refer to the

corresponding pages.

6.2.1. Input and output settings

(Only when using the D-921E or D-921F

(Only when using the D-923AE Digital Input Module)

Microphone/Line Input Module)

Channel Status Verification (p. 27)

Phantom power ON/OFF Settings

Input signal status verification

Sampling frequency verification

Pre-emphasis verification

(Only when the PAD is set to

"MIC.")

(p.

26)

PAD (Input Sensitivity) Settings

(Only when using the D-937SP Digital Input Module)

(p.

26)

Channel Status Verification (p. 27)

(Only when using the D-936R

Stereo

Input signal status verification

Sampling frequency verification

Input Module)

Pre-emphasis verification

Line Input Mode Selection (p. 26)

Line (Stereo) Input Selection

(p. 28)

Line (Stereo) Input Selection

(p. 28)

Input trim settings (p. 28)

Input trim polarity settings

Input 1 Gain Settings

Input Trim Gain Settings

High-pass filter settings (p. 29)

Cutoff Frequency Settings

Q settings

Equalizer settings (p. 30)

Gain Settings (low frequency)

Center frequency settings

Q settings

Gain Settings (high frequency)

Center frequency settings

Q settings

1 (To next page)

2 (To next page)

18

1 (From the previous page)			2 (From the previous page)
	Compressor/Auto-Leveler Mode
	Selection			(p. 31)
(Compressor mode)				(Auto-leveler mode)

Compressor settings (p. 31)

Threshold Level Settings

Ratio settings

Attack time settings

Release time settings

Makeup gain settings

Auto-leveler settings (p. 33)

Target Level Settings

Maximum gain settings

Attack time settings

Release time settings

Level sense settings (p. 34)

Attack Time Settings						Release time settings
	Gate settings (p. 35)
Threshold Level Settings						Hysteresis settings
						Depth settings
						Hold time settings
						Attack time settings
						Release time settings

Auto-Mixing Group Settings

(p. 37)

Ducker settings (p. 38)

	Priority Settings						Attenuation settings
							Attack time settings
							Release time settings
	NOM Attenuation ON/OFF Settings
			(p. 39)
	Input Channel Gain Settings
			(p. 40)
	Input Channel Group Trim Gain			(Only when Group is set)
	Settings		(p. 40)
		Bus assignment and crosspoint gain settings (p. 41)
	Bus Assignment Settings						Crosspoint gain settings

3 (To next page)

19

3 (From the previous page)

Input 12 Gain Settings

Same items as for Input 1

Output 1 Gain Settings			Output Channel Gain Settings
					(p. 42)
			Output Channel Group Trim Gain			(Only when Group is set)
			Settings		(p. 42)
					Crossover settings
					(Only when Crossover function is enabled) (p. 43)
			Slope Settings (High Frequency)						Cutoff frequency settings
									Q settings
									Q2 settings
									Crossover gain settings
									Crossover filter polarity settings
			Slope Settings (Low Frequency)						Same items as for high frequency
					Filter settings (p. 45)
			Filter 1 Settings (Type Selection)						Parametric equalizer
									High-pass filter (6 dB/12 dB)
									Low-pass filter (6 dB/12 dB)
									High shelving filter
									Low shelving filter
									Horn equalizer
									Notch filter
									All-pass filter
			Filter 6* Settings (Type Selection)						Same items as for Filter 1
					Compressor settings (p. 50)
			Threshold Level Settings						Ratio settings
									Attack time settings
									Release time settings
									Makeup gain settings
			Delay Time Settings		(p. 51)
Output 8 Gain Settings					Same items as for Output 1

* The number of filters to be displayed differs depending on crossover configuration settings. (Refer to p. 62.)

20

6.2.2. Microphone bus settings

Microphone bus selector key

	SEL			Feedback suppression settings (p. 52)
			Dynamic Mode Settings						Auto mode activation
									Filter number settings
									Dynamic mode filter initialization
									Auto mode filter initialization
				Feedback suppression filter setting confirmation (p. 54)
			Mode Confirmation						Frequency confirmation
			(Filter 1 settings)						Filter gain confirmation
									Q confirmation
									Same items as for Filter 1
			Mode Confirmation
			(Filter 12 settings)
Effect key				Effect (echo) settings (p. 55)
EFFECT
			Echo Gain Settings						Feedback ratio settings
									Feedback delay settings
									Initial echo (pre-) delay settings
									Low-pass filter frequency settings
									Low-pass filter Q settings
				Bus assignment and crosspoint gain settings (p. 56)
			Bus Assignment Settings						Crosspoint gain settings
6.2.3. Preset memory settings
Preset key
PRESET
			Preset Memory Save		(p. 57)
			Preset Memory Recall		(p. 58)
			Preset Memory Delete		(p. 58)
			Preset Memory Crossfade Time
			Settings		(p. 59)
			Initial Preset Memory Selection
					(p. 60)
			Configuration Save		(p. 60)

21

6.2.4. Utility settings

Utility key

UTILITY

		Stereo Link Settings		(p. 61)
		Group Settings		(p. 61)

Crossover Configuration Settings

(p. 62)

NOM Attenuation Settings (p. 64)

Contact input/output settings (p. 65)

(Only when using the D-981 or D-983 Remote Control Module, or D-984VC VCA Control Module)

Input Contact Number Selection					Preset memory recall
					Volume UP
					Volume DOWN
					Channel ON/OFF
					Line (stereo) input selection
Output Contact Number Selection					Normal make/break
					Preset memory recall tally
					Channel ON/OFF tally
					Contact input status tally
					Line (stereo) input selection tally
					Operation key protection ON/OFF
Protect Settings	(p. 68)
	RS-232C port settings (p. 70)
					RS-232C transmission rate settings
Control Mode Selection
					Gain confirmation for all 12 input channels
All Input/Output Channel Gain
Confirmation	(p. 71)				Gain confirmation for all 8 output channels
	(Only when using the D-984VC VCA Control Module)
					VCA status confirmation for all 12 input channels
All Input/Output VCA Status
Confirmation	(p. 71)				VCA status confirmation for all 8 output channels
	Module type confirmation (p. 72)
					All slots confirmation
Individual Slots Confirmation
Cooling Fan Operating Status
Confirmation	(p. 73)
Firmware Version Confirmation
	(p. 73)

22

6.3. Setting Keys and Knob

Screen shift keys Utility key

Preset key

Parameter input section

DIGITAL MIXER model D-901
	CHANGE
UTILITY	PARAMETER
	LOCK
PRESET	ON
	PUSH-ENTER
	ENTRY SECTION
1	5
2	6
3	7
4	8
	PRESET

Setting knob

Function ON/OFF key

Preset memory selection section

Preset memory selector keys

	Input channel	Microphone bus		Output channel
	control section	control section		control section
	1	7			PEAK	1
	2	8			+12dB	2
					+6dB
	3	9			0dB	3
	4	10			-6dB	4
					-12dB
	5	11			-20dB	5
			SEL
	6	12			-40dB	6
	SEL SIG 0N 0N SIG SEL
						7
			FBS			8
					0N SIG SEL
		ON	EFFECT		ON
	INPUT		MIC BUS		OUTPUT
Input channel	Input volume	Microphone bus	Effect key		Output volume		Output channel
selector keys	control	selector key			control		selector keys
	Input channel					Output channel
	ON/OFF key					ON/OFF key

23

6.4. Setting Screen Displays

[Input/Output Gain Setting Screen Example]

Indicates the object currently being set. In							The channel selected with the
this example, IN1 (Input 1) is the object							Input channel selector key is
being set. Pressing the			shift key here				displayed.
switches the display to the input trim gain										The channel selected with the
setting screen. The [IN 1]			TRIM indication
										Output channel selector key is
is displayed on the first line, and the IN 1
										displayed.
(Input 1) trim gain becomes the setting
object.				I N		1 ]
								[ O U T	1 ]
				– I N F d B				0 . 0 d B

The gain of the input channel is displayed. In this example, the gain of Input channel 1 is displayed. Setting values can be changed using the Input volume control.

The gain of the output channel is displayed. In this example, the gain of Output channel 1 is displayed. Setting values can be changed using the Output volume control.

[Equalizer Setting Screen Example]

The channel number for which settings are to be changed is displayed.

The object currently being set is displayed.

							Displayed when the previous screen
							exists. In this case, the PEQ-L (low
							frequency equalizer)	setting	screen
							appears when the	shift	key is
[ I N 1 ]		P E Q - H					pressed.
G A I N		+ 0 . 0 d B					Displayed when the	next	screen
							exists. In this case, the COMPMODE
							(compressor/auto-leveler)		setting
							screen appears when the shift key
							is pressed.

Setting items are displayed. In this example, the PEQ-H (high frequency equalizer) gain is being set. To change the frequency or Q of PEQ-H, press the shift key. The setting item display changes to FREQ and Q each time the shift key is pressed.

Parameters and selection contents can be changed with the Setting knob. In this example, the equalizer gain can be changed.

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7. INPUT/OUTPUT GAIN SETTINGS

There are 3 possible setting methods.

7.1. Input and Output Channel Control Section Settings

Step 1. Press the desired Input (or Output) channel selector key.

The selected channel's SEL indicator lights.

Note

When Group setting is performed, selecting a channel in the group allows all SEL indicators of the input channels grouped together to light all at once.

Step 2. Rotate the Input (or Output) volume control to set the gain.

Input/output gain setting range:

–INF (–∞) to +10 dB

(Example: Input channel 1 gain setting)

1
1			7	PEAK	1
2			8	+12dB	2
				+6dB
3			9	0dB	3
4			10	-6dB	4
				-12dB
5	2		11	-20dB	5
			SEL
6			12	-40dB	6
	SEL SIG 0N	0N SIG SEL
					7
			FBS		8
				0N	SIG SEL
		ON	EFFECT		ON
	INPUT		MIC BUS	OUTPUT

7.2. Input/Output Gain Setting Screen Operation

Step 1.	Press the desired Input (or Output) channel	I N 1 ]	[ O U T 1 ]
	selector key.
		– I N F d B		0 . 0 d B
Step 2.	Using the Screen shift key, display the input
	(or output) gain setting screen.
Step 3.	Rotate the Setting knob to set the gain.

CHANGE

PARAMETER

Input channel 1 gain setting

PUSH-ENTER

I N 1 2 ]	[ O U T 1 ]
– I N F d B	0 . 0 d B

[ I N 1 ]	O U T 1 ]
– I N F d B	0 . 0 d B

[ I N 1 ]	O U T 8 ]
– I N F d B	0 . 0 d B

7.3. Input/Output Channel Gain Setting Screen Operation

CHANGE

PARAMETER

Input channel 12 gain setting

PUSH-ENTER

CHANGE

PARAMETER

Output channel 1 gain setting

PUSH-ENTER

CHANGE

PARAMETER

Output channel 8 gain setting

PUSH-ENTER

Perform the "Input Channel Gain Settings" (p. 40) and "Output Channel Gain Settings" (p. 42).

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8. INPUT-RELATED SETTINGS

The channel selected with the Input channel selector keys can be enabled or disabled using the Input channel ON/OFF key.

To enable or disable individual functions, use the function ON/OFF key when each function is displayed.

8.1. Phantom Power ON/OFF Settings (Only with D-921E or D-921F module)

[ I N 1 ] P H A N T O M

ON

O F F

(Only when the PAD is set to "MIC.")

•Can be displayed and set only when MIC is selected on the PAD setting screen (explained in the next section).

•Enable or disable phantom power using the function ON/OFF key.

Note

Signals are muted for a specified period of time while changing settings.

•Pressing the Input channel selector key for the channel in which the D-921E or D-921F module is installed permits phantom power setting for that channel. The [IN 1] indication changes to the selected channel number indication.

•The setting screen reverts to the Input/Output Gain Setting screen when the shift key is pressed.

8.2.PAD (Input Sensitivity) Settings (Only with D-921E or D-921F module)

CHANGE

PARAMETER

[ I N 1 ] P A D

L I N E

+ 4 d B

PUSH-ENTER

Input trim gain settings (p. 28)

•Rotate the Setting knob to set the PAD (input sensitivity). Parameter setting range: MIC: –50 or –36 dB

LINE: –10 or +4dB

Note

Signals are muted for a specified period of time while changing settings.

•Pressing the Input channel selector key for the channel in which the D-921E or D-921F module is installed permits PAD selection for that channel. The [IN 1] indication changes to the selected channel number indication.

•The setting screen reverts to the Input/Output Gain Setting screen when the shift key is pressed.

8.3. Line Input Mode Selection (Only with D-936R module)

[ I N 1 ] L I N E I N M I X A L L

Line (stereo) input selection (p. 28)

CHANGE

PARAMETER

PUSH-ENTER

•Rotate the Setting knob to select the D-936R Stereo Input Module operation mode.

•Either a single stereo input can be selected from among the 4 available stereo inputs (SELECT mode) or all 4 stereo channels can be mixed (MIX ALL mode). Also, in MIX ALL mode, stereo sources can be selected with the input selection screen. (Refer to p. 28.)

Note

Signals are muted for a specified period of time while changing settings.

•The setting screen reverts to the Input/Output Gain Setting screen when the shift key is pressed.

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8.4. Channel Status Verification (Only with D-923AE or D-937SP module)

Input signal status				Sampling frequency					Pre-emphasis
verification				verification					verification
[ I N 1 ] S T A T U S				[ I N 1 ] S T A T U S					[ I N 1 ] S T A T U S
L O C K				F s	4 8 k H z				E M P H A S I S N O N E

Using D-923AE: Input trim settings (next page)

Using D-937SP: Line (stereo) input selection (next page)

8.4.1. Input signal status verification

[ I N 1 ] S T A T U S

L O C K

• Input signal status of each channel can be verified.

Display	Input signal status
LOCK	Normal
UNLOCK	No cable connected or equipment power not
	turned on
Non AUDIO	Not an audio signal
Non PCM	Not PCM data
DTS CD	DTS CD

8.4.2. Sampling frequency verification

[ I N 1 ] S T A T U S

F s 4 8 k H z

8.4.3. Pre-emphasis verification

[ I N 1 ] S T A T U S E M P H A S I S N O N E

•Sampling frequencies can be verified.

Display example: 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz

•The indication of [– – –] is displayed when it is impossible to recognize.

•Sampling rate converter (SRC) is always ON.

•The "DETECT" indication is displayed when pre-emphasis is detected, automatically turning on the de-emphasis.

[ I N 1 ] S T A T U S

E M P H A S I S D E T E C T

•The setting screen reverts to the Input/Output Gain Setting screen when the shift key is pressed.

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8.5. Line (Stereo) Input Selection (Only with D-936R or D-937SP module)

Using D-936R: Line input mode selection (p. 26)

Using D-937SP: Channel status verification (previous page)

[	I N 1 ] L I N E S E L
[	1 ]	1 2 3 4

CHANGE

PARAMETER

ON

PUSH-ENTER

•Rotate the Setting knob to select the line (stereo) number and press the function ON/OFF key to enable or disable the input. For example, when the [IN 1] indication is displayed, settings are performed for the stereo module inserted into the unit's rearmounted IN1 and 2 slot.

•The "–" indication is displayed when disabled.

•There are two operation modes for the module: MIX ALL and SELECT modes. (MIX ALL mode is provided with the D-936R only.)

MIX ALL mode: Mixes 4 (stereo) line inputs. Any individual stereo

input can also be disabled.

SELECT mode: Selects a single (stereo) line input. Trim settings can be performed for individual line inputs.

•The setting screen reverts to the Input/Output Gain Setting screen when the shift key is pressed.

8.6. Input Trim Settings

Using D-921F or D-921E: PAD (Input sensitivity) settings (p. 26)

Using D-936R or D-937SP: Line (stereo) input selection (previous section) Using D-923AE: Channel status verification (previous page)

Gain

Polarity

[ I N 1 ] T R I M

[ I N 1 ] T R I M

+ 0 . 0 d B

P O L

N O RMA L

High-pass filter settings (next page)

8.6.1. Input trim gain settings

CHANGE

PARAMETER

[ I N 1 ] T R I M

+ 0 . 0 d B

PUSH-ENTER

8.5.2. Input trim polarity settings

CHANGE

PARAMETER

[ I N 1 ]	T R I M
P O L	N O R M A L

PUSH-ENTER

•Rotate the Setting knob to set the input trim gain. Parameter setting range: –15 to +15 dB in 0.1 dB steps

•Pressing an Input channel selector key allows the trim to be adjusted for that channel. The [IN 1] indication changes to the selected channel number indication.

•The setting screen reverts to the Input/Output Gain Setting screen when the shift key is pressed.

•Rotate the Setting knob to set the input trim polarity. Parameter setting range: NORMAL, INVERSE

•Pressing an Input channel selector key allows the trim to be adjusted for that channel. The [IN 1] indication changes to the selected channel number indication.

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8.7. High-Pass Filter Settings

ON	The high-pass filter function can be enabled or disabled for the displayed channel by using the
	function ON/OFF key even when any of the following screens is displayed. The function ON/OFF
	Indicator lights when enabled (ON).

[Screen display operations]

Input trim settings (previous page)

Cutoff frequency					Q
[ I N 1 ] H P F					[ I N 1 ] H P F
F R E Q	6 0 H z				Q	0 . 7 0 7

Equalizer settings (next page)

8.7.1. Cutoff frequency settings

CHANGE

PARAMETER

[ I N 1 ] H P F

F R E Q

6 0 H z

PUSH-ENTER

8.7.2. Q settings

		CHANGE
[ I N 1 ]	H P F	PARAMETER
Q	0	. 7 0 7
		PUSH-ENTER

•Rotate the Setting knob to set the high-pass filter cutoff frequency.

Parameter setting range: 20 Hz – 20 kHz in 1/24 octave steps Note: Slope is fixed at 12 dB/oct.

•Pressing an Input channel selector key permits the high-pass filter to be set for that channel. The [IN 1] indication changes to the selected channel number indication.

•The setting screen reverts to the Input/Output Gain Setting screen when the shift key is pressed.

•Rotate the Setting knob to set the high-pass filter Q. Parameter setting range: 0.500 – 2.563 (51 points)

•Pressing an Input channel selector key permits the high-pass filter to be set for that channel. The [IN 1] indication changes to the selected channel number indication.

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