Toa DP-0202 User manual

OPERATING INSTRUCTIONS
DIGITAL PROCESSORS DP-020 2
DP-0204
CAUTION
TO REDUCE THE RISK OF ELECTRICAL
SHOCK, DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL
THE LIGHTNING FLASH WITH
ARROWHEAD WITHIN A TRIANGLE IS
INTENDED TO TELL THE USER THAT
PARTS INSIDE THE PRODUCT ARE A
RISK OF ELECTRIC SHOCK TO
PERSONS.
THE EXCLAMATION POINT WITHIN A
TRIANGLE IS INTENDED TO TELL THE
USER THAT IMPORTANT OPERATING
AND SERVICING INSTRUCTIONS ARE
IN THE PAPERS WITH THE
APPLIANCE.
CONTENTS
1. GENERAL DESCRIPTION ......................2 6. PERSONAL COMPUTER CONNECTIONS
...................................6, 7
2. FEATURES ..................................2
7. UNIT ID NUMBER SETTING ....................8
3. HANDLING PRECAUTIONS ......................2
8. USING THE MEMORY I/O CONNECTOR .......... 9
4. SIGNAL PROCESSING FUNCTION ............2
9. RECALLING THE PATTERN MEMORIES............10
5. NOMENCLATURE AND FUNCTIONS
[FRONT PANEL] ............................... 310.SPECIFICATIONS ..............................11
[FRONT POCKET] ............................. 4
[REAR PANEL] ................................. 511. APPEARANCE ...............................12
Please follow the instructions in this manual to obtain the optimum results from these units.
We also recommend that you keep this manual handy for future reference.
TOACorporation

1. GENERAL DESCRIPTION
The TOA DP-0202 (DP-0204) is a digital processor provided with a signal processing function for controlling
sound systems. Using dedicated software operating on a personal computer, an operator can set each function
in detail. The settings can be stored in the component's internal memory, and the memory can be recalled from
the component even when not connected to a personal computer.
2. FEATURES
Digital signal processing allows setting of highly-accurate acoustic parameters.
The signal flow and signal processing functions can be set from a personal computer, and these settings can
be stored as a file for later use.
Up to 16 setting patterns can be stored, which can be easily recalled even without connecting to a personal
computer.
The stored information can be remotely recalled from external equipment, and the memory selection status
can be output.
Analog or digital inputs and outputs can be used as required.
Two communications ports of RS-232C (for controlling a single unit) and RS-485 (for controlling up to 30
units).
A system locking function prevents problems resulting from operation error.
Multiple signal processing functions yet space-saving design (sized for 19" rack).
Wide operating voltage range: 90 VAC-250 VAC.
2 IN/2 OUT (DP-0202) and 2 IN/4 OUT (DP-0204).
3. HANDLING PRECAUTIONS
The digital processor has no parameter setting functions, so you use a personal computer and the dedicated
TOA software program to set the parameters.
Turn the power switch ON only after all terminals and other wires are connected.
Avoid installing the unit near a heater or exposing it to direct sunlight as this may damage the unit. Also, do
not install the unit in humid or dusty locations.
Do not jolt or vibrate the DP-0202 (DP-0204) as it is a precision instrument.
Never attempt to service the unit yourself as opening or moving the covers may expose you to dangerous
voltage or other hazards. Refer all servicing to TOA dealers.
4. SIGNAL PROCESSING FUNCTION
The DP-0202 (DP-0204) is a black box equipped with a signal processor. All signal processing functions and
setting value ranges are, therefore, accomplished by operating the personal computer software. Refer to the
software specifications for details of the signal processing functions.
22

5. NOMENCLATURE AND FUNCTIONS
[FRONT PANEL]
DP-0202
DP-0204
Input level meter [INPUT LEVEL]
Output level meter [OUTPUT LEVEL]
These meters display the I/O levels. The topmost point
is a digital full scale (clipping point), and is +24dB in
terms of analog. The dynamic range of indication is
60dB. Adjust the volume control to a point where
program source dynamic peaks remain just within the
range of the level indicator LEDs and do not cause the
clipping indicator to flash on.
Power switch
Set this switch to ON and the processor starts operating
in the status it was in just before the power was last
turned OFF. The power LED lamp lights at this time.
Muting button [MUTE]
This button is used to disconnect output signals to stop
sound. If this button is pressed, the output is muted and
its corresponding LED lamp lights.
Master unit indicator [MASTER]
The unit in which the ID number is set to "1" (LED lamp
lights) functions as a master unit when switching
between stored information. For details, refer to p.8
"7. UNIT ID NUMBER SETTING".
Overflow indicator [OVERFLOW]
This lamp lights when the internal digital signal
processor overflows for equalizing or filtering operation.
Digital input signal operation indicators
DIGITAL IN : Lights when the input mode is set for
digital signal.
RUN : Lights when a digital signal is input
correctly.
EMPHASIS : Lights when EMPHASIS information is
received.
ERROR : Lights when there is an error in digital
signals.
Memory call key [MEMORY]
This key is used to recall the memory pattern selected
with the memory/unit number selection key.
Unit ID number indication key [UNIT ID]
This key is used to show the unit ID number on the
display.
Memory/unit ID number display
[MEMORY/UNIT ID]
Either the memory number or unit ID number is
displayed. Usually, the selected memory number is
displayed.
Memory/unit ID number selection key
The memory number or unit ID number can be selected
with the UP and DOWN keys.
Pocket cover
3

[FRONT POCKET]
DP-0202 DP-0204
Input boost switch [INPUT]
This switch simultaneously boosts the analog signal
level of each input by 6dB. When the input signal level
is low, signal processing that provides good S/N ratio
can be achieved by using this switch.
Input mode selection switch [DIGITAL ANALOG]
Either analog or digital mode can be selected for input
signals.
Output attenuation switch [OUTPUT]
This switch individually attenuates the analog signal
level of each output by 6dB or 12dB. More residual
noise can be reduced for sound output with a good S/N
ratio.
Output mode selection switch
[DIGITAL ANALOG]
Either analog or digital mode can be selected for output
signals.
Communications port selection switch [PORT]
This switch is used to select the communications port
your computer is connected to. RS-232C is valid only
when controlling a single unit, and the front or
rear-mounted D-SUB connector can be used. Use
RS-485 when controlling multiple units. XLR connectors
for RS-485 are mounted on the back of the unit.
System locking switch [LOCK]
Use this switch to set how the hardware is locked.
OFF : All functions are available (unlocked), such as
memory switching.
1 : All functions are locked except memory
switching.
2 : All front panel facilities are locked.
Make sure the power is switched ON when you use this
switch.
Word clock switch [WORD CLOCK]
For most operations, set this switch to the "INT"
position. When controlling an internal signal processing
clock from external equipment, set this switch to the
"EXT" position.
RS-232C communications port [RS-232C]
This is a 9-pin D-SUB connector for RS-232C
communications, and can only be used when the
communications port selection switch is set to
"RS-232C". This port is connected in parallel to the
rear-mounted D-SUB connector for RS-232C. For
details, refer to p. 6 "6. PERSONAL COMPUTER
CONNECTIONS".
Unit ID number setting switch
[SET UNIT ID No.]
Use this key to set the unit ID number. For details, refer
to p. 8 "7. UNIT ID NUMBER SETTING".
4

[REAR PANEL]
DP-0202
DP-0204
Input connector [DIGITAL IN, INPUT 1, 2]
An electronically-balanced XLR connector. Both The
DP-0202 and DP-0204 have two input channels for
each digital and analog signals. "DIGITAL IN", and
"INPUT 1" and "INPUT 2" (both for analog signals) are
provided for the inputs. The AES/EBU format is
employed in the digital input, allowing two-channel
transmission.
Output connector
[DIGITAL OUT 1, 2 OUTPUT 1,2,3,4]
An electronically-balanced XLR connector. The
DP-0202 has two output channels, while the DP-0204
has four output channels.
DP-0202
The outputs are "OUTPUT 1" and "OUTPUT 2" (both for
analog signals), and "DIGITAL OUT". The AES/EBU format
is employed in the digital output, allowing 2-channel
transmission.
DP-0204
The outputs are "OUTPUT 1" through "OUTPUT 4" (all for
analog signals), and "DIGITAL OUT1" and "DIGITAL OUT
2".
Digital output 1 corresponds to signals of analog outputs 1
and 2, while digital output 2 corresponds to signals of
analog outputs 3 and 4.
Word clock input connector [WORD CLOCK IN]
A BNC connector for clock input which allows external
control of internal signal processing. This connector can
only be used when the word clock switch located in the
front pocket is set to "EXT". The impedance is 75
level is a TTL level.
RS-485 communications port [RS-485]
A 3-pin XLR connector for RS-485 communications.
This connector can only be used when the
communications port selection switch located in the
front pocket is set to "RS-485". When simultaneously
controlling two or more units, use this port and connect
each unit in turn. A mode conversion adaptor is
required because data are usually transmitted from a
personal computer in RS-232C mode. For details, refer
to p. 6 "6. PERSONAL COMPUTER CONNECTIONS".
RS-232C communications port [RS-232C]
A 9-pin D-SUB connector for RS-232C communications.
This connector can only be used when the
communications port selection switch located in the
front pocket is set to "RS-232C". This connector is
connected in parallel to the D-SUB connector for
RS-232C in the pocket, and is valid only when
controlling a single unit. For details, refer to p. 6
"6. PERSONAL COMPUTER CONNECTIONS".
Memory I/O connector [MEMORY CTRL I/O]
This connector allows external remote pattern memory
control, as well as output of memory selection status to
external equipment. Remote control is accomplished by
make contact, and the 5V logic output is used for
external output. For details, refer to p. 9 "8. USING THE
MEMORY I/O CONNECTOR".
Power inlet
Connect the power cord included with the unit to this
inlet.
Ground loop break switch [GND]
This switch, when set to "LIFT" position, breaks a
hum-generating ground loop formed when the unit is
connected to external components. Normally, set this
switch to "NORM" position.
and
5

6. PERSONAL COMPUTER CONNECTIONS
Neither the DP-0202 nor the DP-0204 has built-in parameter setting functions. You need to use the dedicated
TOA software operating on a personal computer to set the parameters. Up to 30 units can be controlled.
There are two connection (communications) methods; RS-232C and RS-485 communications.
Use either communications method depending on the system configurations exampled below.
(1) When setting parameters of a single unit, connect to the RS-232C connector.
(2) When setting parameters of more than one unit, connect to the RS-485 connector.
(3) When setting parameters in the system employing this unit and the DX-0808 matrix unit, connect the
RS-485 connector.
(1) When setting parameters of only one unit
In this case, use the communications method called "RS-232C". Set the communications port selection switch
in the front pocket to "RS-232C". As shown in Fig. 1, connect a straight cable from the PC's RS-232C port to the
DP-0202's (DP-0204's) connector for RS-232C communications.
Either the connector in the front pocket or on the rear panel may be used: both are 9-pin D-SUB connectors
and are connected in parallel. Below are RS-232C's control specifications:
Baud rate : 9,600 bps
Parity : None
Data : 8 bits
Stop bits : 1 bit
Although RS-232C is a one-to-one communications method, the maximum transmission distance is 10m. If the
distance exceeds 10m, we recommend connecting your unit to the PC using an RS-485, even if using only one
unit. In addition, because the setting status is stored in the unit's memory, set patterns can still be used even
with a personal computer disconnected.
Fig. 1 RS-232C port connection between a PC and a single unit
6

(2) When setting parameters of more than one unit
In this case, use the communications method called "RS-485". Because multiple units are controlled, each unit
needs its own unique ID registered in advance. For details, refer to p. 8 "7. UNIT ID NUMBER SETTING".
Set the communications port selection switch in the front pocket to "RS-485". Connection between a personal
computer and each unit is shown in Fig. 2.
Personal computers normally have only an RS-232C port, and thus require an adaptor to convert the RS-232C
port to an RS-485 port.
Connect the PC's RS-232C port to the DP-0202's (DP-0204's) female connector for RS-485 communications
via the adaptor. Similarly, make connections for the second unit and its subsequent units as shown in Fig. 2.
Since the settings made through the PC can be stored in each unit's memory, the set patterns can be recalled if
only units are connected as shown in Fig. 2 ; the adaptor and computer are not necessary to recall the patterns.
In this case, the unit with ID No. 1 acts as a master unit to control the other units.
ID No. 1
ID No. 2
: XLR 3P female connector (option)
: XLR 3P male connector (option)
ID No. 3
ID No. 4
Fig. 2 Communications port connections between a PC and multiple units
(3) When using the DP-0202/DP-0204 in conjunction with the DX-0808 matrix unit
Parameters can be set and controlled from one PC in the same manner and connections as described in Item 2
above.
7

7. UNIT ID NUMBER SETTING
To control two or more units, give each unit a separate number called a unit ID number, then send the setting
data from a personal computer. The ID numbers must be consecutive from No. 1 to No. 30, and be set in
advance.
Setting the number
1. Open the front pocket.
2. Switch on the power.
3. Hold the lever of the unit ID number setting switch to the right.
4. While holding the lever, operate the front-mounted memory/unit number selection key to show the
desired number on the memory/unit number display.
5. Push the unit ID number indication key to register the number being displayed.
6. Release the unit ID number setting switch.
Notes
The ID number is factory preset to No. 1.
Make sure the same number is not registered twice.
To confirm the set number, press the unit ID number display key located on the front panel.
8

8. USING THE MEMORY I/O CONNECTOR
The memory I/O connector allows remote control of 16 pattern memories from external equipment, as well as
output of the memory selection status to external equipment. The I/O controls are performed in 4 bits. Remote
operations can be controlled using a make contact, and a 5V logic output is used to output information to
external equipment. By using this terminal, stored information can be remotely recalled or control signals can be
sent to other equipment.
Table 1 Pin's input status VS. memory number
8- 1. Remote memory call
Keeping the level of pin No. 2 low enables external
remote memory control. Table 1 shows the
relationship of each pin's input status to memory
number. Set patterns can be recalled through a
simple diode matrix.
Note No connection is possible for the pins in "H"
status shown in Table 1. (These pins are
pulled up at 5V.)
8-2. Memory selection status output
Table 2 Selected memory VS. pin's output status
The memory selection status can be output to
external equipment by making the connector's pin
No. 2 a high level. Table 2 shows the relationship of
selected memory to each pin's output status.
Note No connection is possible for the pin 2 (CTRL
input) shown in Table 2. (This pin is pulled up
at 5V.)
Pin arrangement of the memory I/O connector
Memory No. 1
Memory No. 2
Memory No. 3
Memory No, 4
Memory No. 5
Memory No. 6
Memory No. 7
Memory No. 8
Memory No. 9
Memory No. 10
Memory No. 11
Memory No. 12
Memory No. 13
Memory No. 14
Memory No. 15
Memory No. 16
PIN 2
CTRL IN
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
PIN 6
IN
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
PIN 5
IN
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
PIN 4
IN
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
PIN3
IN
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
Memory No. 1
Memory No. 2
Memory No. 3
Memory No. 4
Memory No. 5
Memory No. 6
Memory No. 7
Memory No. 8
Memory No. 9
Memory No. 10
Memory No. 11
Memory No. 12
Memory No. 13
Memory No. 14
Memory No. 15
Memory No. 16
PIN 2
CTRL IN
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
PIN 6
OUT
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
PIN 5
OUT
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
PIN 4
OUT
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
PIN 3
OUT
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
9

9. RECALLING THE PATTERN MEMORIES
Although storing the set parameters into up to 16 memories of the DP-0202 or DP-0204 needs the dedicated
TOA software and a personal computer, recalling them can be performed without using the software and
computer.
When multiple units are connected through RS-485 communications ports as shown in Fig.2. on page 7, the
unit with ID No. 1 acts as a master unit to recall the same pattern memory of all connected units.
Follow the procedures below to recall pattern memories when the DP-0202 or DP-0204 is a master unit.
1. Push the front-mounted memory/unit ID number selection key to show the desired memory number on the
display. (The displayed number will flash.)
2. Push the memory recall key to recall the selected pattern memory. (The display stops flashing.)
The memory recall can be performed remotely by a personal computer or by external equipment connected
through the rear-mounted memory I/O connector.
10