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Gates (input channels 1-48), GATE, Threshold (THRESH), Range (RANGE), Gate attack time

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5 - Channel modules : Dynamics processors Gates (input channels 1-48) GATE This is an on-screen button, allowing you to turn the channel gate (1 through 48, inputs only) on and off. Duplicated in the global section at the right of the screen. Threshold (THRESH) , controlled by the POD 1 knob, allows the setting of the threshold at which the gate will open. Variable from -80dB to 0dB in 1dB steps. Range (RANGE) , controlled by the POD 2 knob, sets the gate range, from 60dB to 0dB in 1dB steps. Gate attack time (ATTACK), controlled by the POD 3 knob. Variable from 0ms to 125ms in 1ms steps. Hysteresis (HYST) , controlled by the POD 4 knob, from 0dB to 24dB in 1dB steps. Compressor/expanders COMP/EXPAND This is an on-screen button, allowing you to turn the channel compressor/ expander on and off. Duplicated in the global section at the right of the screen. Insert point (INS PNT) allows the compressor/ expander to be inserted either pre-EQ or post-EQ (channels 1 through 48-buss, aux and stereo are pre-fader only). Move the cursor to this ﬁeld and use the ENTER key to change this setting. The link and trigger settings work in the same way as for the gate (see above). Threshold (THRESH), controlled by the POD 1 knob, and variable from -48dB to 0dB in 1dB steps. Compression/expansion ratio (RATIO), controlled by the POD 2 knob, and variable from 1:1 to ∞:1 (inﬁnite compression). The steps are as follows: 1.00:1, 1.05:1, 1.11:1, 1.18:1, 1.25:1, 1.33:1, 1.43:1, 1.54:1, 1.67:1, 1.82:1, 2.00:1, 2.22:1, 2.50:1, 2.86:1, 3.33:1, 4.00:1, 5.00:1, 6.67:1, 10.0:1, 20.0:1, ∞:1. NOTE Hysteresis is a second threshold. The Threshold value is used when opening the gate, and that of Hysteresis, typically set a few dB lower than Threshold, when closing the gate. This means that once a signal has dropped below the Hysteresis level, it must rise again to the Threshold level for the gate to re-open, thus reducing or eliminating gate "chatter". Gate hold time (HOLD) , controlled by the POD 3 knob on the second row. Variable from 0ms to 990ms in 100 steps. Gate decay time (DECAY) , controlled by the POD 4 knob on the second row. Variable from 5ms to 5.0s. Decay time Step size 5ms to 200ms 200ms to 300ms 300ms to 500ms 500ms to 1.00s 1.00s to 3.00s 3.00s to 5.00s 5ms 10ms 20ms 50ms 0.1s 0.2s Table 5.2: Gate decay times When the processor is used as an expander, the values are: 1.00, 2.00, 4.00, 8.00, 16.0, 32.0, 64.0. Attack time (ATTACK), controlled by the POD 3 knob, and variable from 0ms to 125ms in 1ms steps. Release time (RELEASE), controlled by the POD 4 knob, and variable from 5ms to 5.0s in 100 steps. Release time 5ms to 200ms 200ms to 300ms 300ms to 500ms 500ms to 1.00s 1.00s to 3.00s 3.00s to 5.00s Step size 5ms 10ms 20ms 50ms 0.1s 0.2s Table 5.3: Compressor/expander release times Auto make-up (AUTOmk-up), controlled by the ENTER key. This is used if the compression settings have resulted in gain reduction. Not shown if the processor is being used as an expander. 76 TASCAM DM-4800 User's Manual

Section	Page
1 - Introduction	10
Computer (DAW) integration	10
Other key points	10
Please read this manual	10
About the DM-4800	11
Inputs	11
Channel modules	11
Channel destinations	12
Outputs	12
Effects	12
Unpacking the DM-4800	12
About the manual	13
What’s in the manual	13
1, “Introduction” (page 10)	13
2, “Basic operational concepts” (page 17)	13
3, “Connections” (page 48)	13
4, “Routing & assignment” (page 58)	13
5, “Channel modules” (page 71)	13
6, “Effects” (page 94)	13
7, “MIDI” (page 96)	13
8, “Remote operation” (page 105)	13
9, “Specifications” (page 118)	13
Notes and warnings	13
Before you start	14
Special notes for touch-sensitive faders	14
Copyright, etc.	14
The features of the DM-4800	15
Control section	16
Monitoring section	16
Module & fader layer control section	16
Encoder section	16
Modifier section (SHIFT & CTRL keys)	16
Library section and CF card slot	16
Machine control section	16
Analog input section	16
2 - Basic operational concepts	17
What’s on the screen?	18
Jumping to commonly-used screens	18
Setting a USER screen	19
Fader layers	19
Smart keys	19
Other global modifier keys	20
Special controls	20
The PODs	20
Encoders	22
Flipping the encoders	22
Encoder mappings	23
Reading the encoder indicators	24
Pan settings	24
EQ settings	24
Module levels and AUX sends	25
Dynamics settings	25
Other settings	25
Encoder behavior (fine and coarse)	26
“Fat channel”	27
Dynamics processors	27
EQ controls	28
Aux send levels	28
Pan control	28
Copy and paste of parameters	29
To copy channel parameters	29
To paste channel parameters	29
To paste only the gate parameters	29
To paste only the compressor/expander parameters	29
To paste only the EQ parameters	29
The SCREEN key	29
UTILITY copying	30
Copying within a module	30
Copying between modules	31
Protecting parameters	31
CF cards	32
Formatting a new card	32
Shutting down the DM-4800	33
IMPORTANT CAUTION!!!	33
How to shut down the DM-4800	33
Starting up the DM-4800	33
About projects and libraries	34
Setting the date and time	35
Naming the DM-4800	35
Creating a new project	35
To set up a new project from scratch	36
Using a template	36
Managing projects	36
Loading a project	36
Copying a project	36
Deleting a project	36
Renaming a project	37
Protecting a project	37
Saving project data	37
Library management	38
Using library banks	38
Viewing library entries	39
Recalling library entries	39
Storing library entries	39
Deleting library entries	39
Library utilities	39
Target parameters	40
Source parameters	40
Naming library entries	41
Options	42
SETUP screen	42
UPPER BAR DISPLAY	42
LOCATE DISPLAY mode	42
ENCODER OPERATION mode	42
LIBRARY DIRECT KEY OPERATION	42
OL/STATUS LED TYPE	42
FADER SENSITIVITY	43
PREFERENCES	43
Fader Auto MODULE Select	43
CH SOLO Key Auto MODULE Select	43
Select MODULE Return	43
ST Link by SEL key	43
SEL Key Follows Fader Layer Status	43
Meter Follows SEL key	43
Automation fader OFF	44
Balance Level CENTER:0dB	44
AUX Mute follows CH Mute	44
Encoder Mode Follows Current Screen	44
Current Screen Follows Encoder Mode	44
BUSS PAN Follows ST PAN	44
BUSS Link/BUSS PAN Mode are Linked	44
SOLO	44
MODE SELECT	44
SOLO LINK	44
SOLO TYPE	44
INPLACE SOLO DEFEAT	44
Utilities	45
SWITCH utility	45
Talkback	45
Machine Control	45
Other functions	45
Polarity	45
GPI settings	45
Making connections	46
Setting the GPI	46
GPI CONFIG section	46
Selecting the type	46
ON/OFF setting	47
TIME EVENT section	47
Selecting the port	47
Setting the time	47
Setting the type	47
ON/OFF setting	47
Editing the GPI EVENT LIST	47
3 - Connections	48
Analog connections	49
Mic/line connections	49
Channel inserts	49
2 TR IN	49
ASSIGNABLE RETURNS	49
Analog outputs	50
STEREO OUT	50
ASSIGNABLE SENDS	50
Monitoring (LARGE (BAL) & SMALL (BAL))	50
Monitoring (STUDIO (BAL))	50
Digital connections	50
Digital audio I/O	50
TDIF I/O	50
ADAT “lightpipe” OUT & IN	50
CASCADE	50
Digital inputs and outputs	50
Digital I/O setup	51
Digital inputs	51
Mute Defeat	51
Stereo output	51
Slot card configuration	52
IF-AN/DM	52
IF-AE/DM	52
IF-TD/DM	52
IF AD/DM	52
IF-FW/DM	52
IF-SW/DM	52
Cascade configuration	53
Master/slave setting	53
Making the cascade connection	53
Setting up the cascade	53
Using the cascade	54
Interlocked settings	54
Interlocked operations	54
Other connections	55
MIDI connections (IN, OUT and THRU)	55
RS-422 serial control terminal	55
GPI terminal	55
TIME CODE	55
WORD SYNC (IN and OUT/THRU)	55
TO METER	55
FOOT SW	55
USB	55
Power input	55
Clock setting	56
Fs MODE	56
Checking the clock	56
Varispeed clocking	56
Clock change action	56
Changing the clock	57
Clock phase	57
OUT SPEED	57
4 - Routing & assignment	58
Routing	59
Input routing	59
Batch routing	60
Flipping the channels	60
Loopback options	60
Digital input selection	60
Output routing	61
Slot card outputs	61
Insert patching	61
Send/return linking	62
Channel-to-buss assignment	63
Assignment using the front panel	63
Using the assignment screens	63
Pan switch	64
Surround assignments	65
Non-channel assignments	65
Bulk assignment	65
Buss panning	65
Monitoring	66
Selecting the CR source	66
Studio cue source	67
Talkback, etc.	68
Talkback source	68
Slate definition	68
Oscillator and noise generator	68
Oscillator destination	68
Meters	69
Meter ballistics	69
On-screen meter selection	69
Metering points	69
Soloing	70
5 - Channel modules	71
General principles	71
ASSIGN PARAMETERS screen	71
Global module settings	72
Input and return display	72
EQ display and button	72
GATE display and button	72
COMP/EXP display and COMP button	72
Compressor/expander point button	72
Meters and pick-off point button	72
Fader	72
MUTE button	73
PAN (BALANCE) control	73
PAN follow button	73
INSERT button	73
Phase button	73
AUX1-2 button	73
STEREO button	73
Group assignment displays	73
Fader control	73
Setting levels in blocks	73
Master screen	73
Dynamics processors	75
LINK	75
Trigger mode (TRG MOD)	75
Trigger selection	75
Gates (input channels 1-48)	76
GATE	76
Threshold (THRESH)	76
Range (RANGE)	76
Gate attack time	76
Hysteresis (HYST)	76
Gate hold time (HOLD)	76
Gate decay time (DECAY)	76
Compressor/expanders	76
COMP/EXPAND	76
Insert point (INS PNT)	76
Threshold	76
Compression/expansion ratio	76
Attack time	76
Release time	76
Auto make-up	76
Output gain	77
Library jump buttons	77
Preset dynamics library entries	77
Compressor/expander library entries	77
Gate library entries	78
Trigger settings	78
EQ	79
Encoders and EQ	79
EQ library	80
Aux and buss setup	81
Aux send screens (unlinked)	81
Copying settings between aux sends and channel levels	81
Batch setting	81
Source selection	82
Aux send pan/balance screens (linked)	82
Using the encoders	82
Using the “fat channel”	82
Module setup	83
INPUT/RETURN selection	83
GATE switching	83
AUX 1-2 SOURCE	83
Dynamics insert point	83
Dynamics on/off	83
Assignable insert position	83
Phase control	83
Module delay	83
Digital trim	84
Dithering (stereo buss module only)	84
Pan and balance settings	84
Phase/trim/delay	84
Phase	84
Digital trim	85
Delay	85
Stereo linking	85
Balance	86
Linked dynamics	86
Mute groups	86
Clearing groups	87
Grouping groups	87
Linking fader groups to mute groups	87
Fader groups	87
Surround operations	88
Changing surround mode	88
Buss assignments	88
Assigning channels to surround busses	88
Surround panning	89
Module screen	90
Pattern panning	90
Using the cursor keys	90
Jump keys	90
Pan mode off	91
LFE level	91
Snapshots	92
Snapshot library management	92
Storing snapshots	93
Information about a snapshot	93
6 - Effects	94
Routing the effects	94
Setting up the effects	94
Effect libraries	95
7 - MIDI	96
MIDI port switching and filtering	96
Program Change messages and the DM-4800	97
Setting the MIDI channels	97
Batch setup	97
MIDI Implementation Charts	97
MIDI IN and OUT ports	98
MTC OUT port	99
USB MIDI Control Port (1)	100
USB MIDI Interface port (2)	101
USB MIDI MTC Port (3)	102
USB MIDI Program Change Port (4)	103
USB MIDI Remote Port (5, 6, 7)	104
8 - Remote operation	105
Selecting devices for transport control	105
Deleting devices from the list	106
Auto-detection of devices	106
Selecting the control type for the devices	106
STATE	106
DEVICE	106
ID	106
CHASE	107
TRA	107
REC	107
All safe	107
Transport mapping memories	107
To use a transport mapping	108
Viewing the transport mappings	108
Editing a mapping	108
Machine control setup	109
Edit Frames	109
Cueing mode	109
Play Mode	109
AUTO	109
DEFERRED	109
IMMEDIATE	109
Play Command Type	109
Record Command Type	110
Locate Preroll	110
MIDI Control by the DM-4800	111
MIDI controllers	111
MIDI faders	112
MIDI Mixer	112
DAW controllers	113
HUI	114
Sonar	114
Digital Performer	114
Logic	114
Steinberg	114
Location memories	115
Selecting the location point display	115
Storing a location memory “on the fly”	115
Manually entering and editing a location memory	115
Location to a location memory	116
Viewing a list of location memories	116
Manual location	116
Repeat play	116
Auto punch operations	117
ALL INPUT and AUTO MON	117
9 - Specifications	118
Analog audio I/O	118
Digital audio I/O	119
Miscellaneous I/O connections	119
Equalization	120
System performance	120
Physical characteristics	120
Dimensional drawing	121
Messages and troubleshooting	121
Block diagram	136

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5 – Channel modules : Dynamics processors

TASCAM DM-4800

User’s Manual

Gates (input channels 1–48)

GATE

This is an on-screen button, allowing you to

turn the channel gate (1 through 48, inputs only) on

and off. Duplicated in the global section at the right

of the screen.

Threshold (

THRESH

)

, controlled by the POD 1

knob, allows the setting of the threshold at which the

gate will open. Variable from

-80dB

0dB

in 1dB

steps.

Range (

RANGE

)

, controlled by the POD 2 knob,

sets the gate range, from

60dB

0dB

in 1dB steps.

Gate attack time

(

ATTACK

), controlled by the

POD 3 knob. Variable from

0ms

125ms

in 1ms steps.

Hysteresis (

HYST

)

, controlled by the POD 4 knob,

from

0dB

24dB

in 1dB steps.

NOTE

Hysteresis is a second threshold. The

Threshold

value is

used when opening the gate, and that of

Hysteresis

, typ-

ically set a few dB lower than

Threshold

, when closing

the gate. This means that once a signal has dropped

below the

Hysteresis

level, it must rise again to the

Threshold

level for the gate to re-open, thus reducing or

eliminating gate “chatter”.

Gate hold time (

HOLD

)

, controlled by the POD 3

knob on the second row. Variable from

0ms

990ms

100 steps.

Gate decay time (

DECAY

)

, controlled by the

POD 4 knob on the second row. Variable from

5ms

5.0s

Compressor/expanders

COMP/EXPAND

This is an on-screen button,

allowing you to turn the channel compressor/

expander on and off. Duplicated in the global section

at the right of the screen.

Insert point (

INS PNT

)

allows the compressor/

expander to be inserted either pre-EQ or post-EQ

(channels 1 through 48—buss, aux and stereo are

pre-fader only). Move the cursor to this ﬁeld and use

the

ENTER

key to change this setting.

The link and trigger settings work in the same way as

for the gate (see above).

Threshold

(

THRESH

), controlled by the POD 1

knob, and variable from

-48dB

0dB

in 1dB steps.

Compression/expansion ratio

(

RATIO

), con-

trolled by the POD 2 knob, and variable from

1:1

∞

(inﬁnite compression).

The steps are as follows:

1.00:1

1.05:1

1.11:1

1.18:1

1.25:1

1.33:1

1.43:1

1.54:1

1.67:1

1.82:1

2.00:1

2.22:1

2.50:1

2.86:1

3.33:1

4.00:1

5.00:1

6.67:1

10.0:1

20.0:1

∞

When the processor is used as an expander, the val-

ues are

: 1.00

2.00

4.00

8.00

16.0

32.0

64.0

Attack time

(

ATTACK

), controlled by the POD 3

knob, and variable from

0ms

125ms

in 1ms steps.

Release time

(

RELEASE

), controlled by the POD 4

knob, and variable from

5ms

5.0s

in 100 steps.

Auto make-up

(

AUTOmk-up

), controlled by the

ENTER

key. This is used if the compression settings

have resulted in gain reduction. Not shown if the pro-

cessor is being used as an expander.

Decay time

Step size

5ms to 200ms

5ms

200ms to 300ms

10ms

300ms to 500ms

20ms

500ms to 1.00s

50ms

1.00s to 3.00s

0.1s

3.00s to 5.00s

0.2s

Table 5.2: Gate decay times

Release time

Step size

5ms to 200ms

5ms

200ms to 300ms

10ms

300ms to 500ms

20ms

500ms to 1.00s

50ms

1.00s to 3.00s

0.1s

3.00s to 5.00s

0.2s

Table 5.3: Compressor/expander release times