Sony SRP-L300 Bedienungsanleitung

Warning .........................................

Precautions ....................................

1. Outline .....................................

2. Glossary ...................................

3. Controls and Functions ..........

4. Basic Operation.......................

5. Internal Signal Flow ...............

6. Digital Signal Processing

Block ........................................

7. Parameter Change ..................

8. Program Store and Recall ......

9. Lock Functions ........................

10. Digital Input and Output .......

11. Main Specifications ................

12. External Dimensions...............

Preset Program .............................

Digital Limiter/Delay

SRP-L300

2-346-314-11(2)

Operating Instructions

POWER

ON OFF

−12 +12

INPUT LEVEL

CH-1 CH-2

OVER

OUTPUT LEVEL

CH-1 CH-2

INPUT

ANALOG

DIGITAL

PLL

LIMITER / DELAY

OVER/GR(dB)

36912151821242730

CH-1

CH-2

−+

ADJUST

−+

SELECT

PUSH ENTER/YES

EDIT PROGRAM

SYNC EXIT/NO

LOCK

BYPASS

DIGITAL LIMITER/DELAYSRP-L300

Table of Contents

Before operating, please read this manual carefully.

Be sure to keep it properly for future reference.

Notice for the Customers in the United

Kingdom

IMPORTANT

The wires in this mains lead are coloured in accordance

with the following code:

Blue : Neutral

Brown : Live

As the colours of the wires in the mains lead of this

apparatus may not correspond with the coloured markings

identifying the terminals in your plug, proceed as follows:

The wire which is coloured blue must be connected to the

terminal which is marked with the letter N or coloured

black. The wire which is coloured brown must be

connected to the terminal which is marked with the letter

L or coloured red. Do not connect either wire to the earth

terminal in the plug which is marked by the letter E or by

the safety earth symbol Yor coloured green or green-and-

yellow.

Afin d'écarter tout risque d'électrocution, garder le coffret

fermé. Ne confier l'entretien de l'appareil qu'à un

personnel qualifié.

Per evitare scosse elettriche, non aprire l'apparecchio. Per

le riparazioni rivolgersi solo a personale qualificato.

Para evitar descargas eléctricas, no abra la caja. En caso de

averia, solicite los servicios de personal cualificado

solamente.

To prevent fire or shock hazard, do not expose the

unit to rain or moisture.

To avoid electrical shock, do not open the cabinet.

Refer servicing to qualified personnel only.

WARNING

This symbol is intended to alert the user to

the presence of important operating and

maintenance (servicing) instructions in the

literature accompanying the appliance.

This symbol is intended to alert the user to

the presence of uninsulated “dangerous

voltage” within the product’s enclosure

that may be of sufficient magnitude to

constitute a risk of electric shock to

persons.

For the customers in the Netherlands

Voor de klanten in Nederland

• Dit apparaat bebat voor memory back-up een batterij

die niet vervangen hoeft te worden tijdens de

levensduur van het apparaat.

• Raadpleeg uw leverancier indien na zeer intensief of

langdurig gebruik de batterij vervangen moet worden.

Om gevaar of schade door kortsluiting te voorkomen

mag de batterij alleen vervangen worden door

vakbekwaam servicepersoneel.

• Gooi de batterij niet weg maar lever deze in als klein

chemisch afval (KCA).

On safety (Refer to the supplied “WARNING”.)

•Should any liquid or solid object fall into the cabinet, unplug the unit and have it checked by qualified personnel before

operating it any further.

•Unplug the unit from the wall outlet if it is not to be used for an extended period of time. To disconnect the cord, pull it out

by grasping the plug. Never pull the cord itself.

On installation

•Do not install the unit in a location near heat sources such as radiators or air ducts, or in a place subject to direct sunlight,

excessive dust, mechanical vibration or shock.

•When mounting the unit on the EIA 19-inch standard rack, allow enough space of 1U or more above this unit for good

ventilation.

On operation

•Before making program source connections, be sure to turn the power switch off and unplug the unit.

•When the unit is not used, turn the power off to conserve energy and to extend the useful life of your unit.

On cleaning the cabinet

Clean the cabinet, panel and controls with a soft cloth lightly moistened with mild detergent solution. Do not use any type of

abrasive pad, scouring powder or solvent such as alcohol or benzine.

On repacking

Do not throw away the carton and the packing material. It makes an ideal container for transporting the unit.

When shipping the unit for repair work or to another location, repack it as it was.

If you have any questions or problems concerning your unit, consult your nearest Sony dealer.

PRECAUTIONS

1. OUTLINE

The SRP-L300 digital limiter/delay is provided with three signal processing algorithms.

(A) Dynamics algorithm

This algorithm consists of four independent blocks, that is, a compressor, gate/expander and limiter.

The compressor and expander can set the sensitivity of any frequency or three types of stereo links using a side

equalizer as well as setting parameters such as attack time, hold time, release time, and ratio. Moreover, various

dynamics controls can be carried out such as a Soft Knee function that can change the effect of the compressor or the

setting of the maximum attenuation in the gate/expander.

* You can use the Dynamic algorithm with simple delay.

(B) DAL-1000 algorithm

This algorithm performs the function of Sony digital recording limiter DAL-1000 with higher precision.

This algorithm can smoothly clip the peak level of a waveform while increasing the gain of a low-level signal at a

response rate free from time lag. This algorithm can also be used through combination of each delay.

This is a 48-taps delay algorithm.

The delay time, level, and low-pass filter parameters can be set for each tap. The maximum delay time is 4.5 seconds.

This algorithm can be used for the simulation of reflected sound.

Excellent sound quality ensured by high-performance A/D and D/A converters

The SRP-L300 is provided for the dynamic range of 105 dB or more and the converter with 20-bits resolution high-

precision sampling rate A/D and D/A converter system with 48 kHz sampling rate.

This enables a low noise and high sound quality

High-precision digital signal processing are carried out using a digital signal processing unit (DSP) with 52-bits

multiplication precision.

Digital input/output terminal conforming to the AES/EBU standard

Sampling rate converter with Jitter free

This sampling rate converter converts a digital input signal into a 48 kHz internal sampling frequency signal with

crystal precision and sends it to the digital signal processing block. This produces the effect below.

1The sound quality improves due to correction of input signal control jitter with crystal precision.

2The user can freely use the sampling frequency of a digital input signal.

3The analog input signal that was converted from analog to digital in 48 kHz and 20 bits can be mixed with a

digital input signal.

In the input/output block, signals can be easily selected and switched as in analog/digital switching, mixing,

mono-mixing, and CH-1/CH-2 switching.

A maximum of 20 programs can be stored and instantaneously recalled.

A lock function is provided to protect the setting from accidental operation.

The Remote control operation using an RS-232C terminal is available.

The analog stacking output and digital through output are provided for signal distribution.

Algorithm

Digital signal, are processed according to a mathematical formula called an algorithm

in the digital signal processing unit. The SPR-L300 uses three different algorithms to

produce varying effects.

Parameter

Several numerical values are used in the algorithmic formulas, each value is called a

“parameter”. The “delay time”or “threshold level”are examples.

Edit

The operation which changes a parameter value is called an “edit.”

Program

A “program”in the SRP-L300 indicates the current processing state at that time, that

is, the setting state of the algorithm and parameters used.

A “preset program”and “user program”are available. The preset program is

preinstalled at the factory.

The user program is created for internal storage by the user.

Program recall and storage

Always only one program is executed during operation. A program executed at that

time is called a “temporary program.”The temporary program has used for an edit.

What the edited temporary program is memorized in the internal memory circuit as a

user program is called storage.

What the stored user program or preset program reads from memory as a temporary

program is called a recall.

Default display state

The program number, program name, and algorithm type (a,b. etc) in the upper row,

the level meter is displayed in the second row. Together, this is called “default display

state”.

In the default display state, the SRP-L300 waits for the user operation with the whole

operation state exited.

To return from the current state to the default display state, press the “EXIT/NO”

button several times.

Sync

The operation for changing CH-1 and CH-2 parameters together during editing is

called “sync.”

* No means of external sync

dBFS

These are signal level unit in a digital signal. “FS”in dBFS is an abbreviation for “full

scale.”It is a decibel representation with the digital clip level as standard.

The SRP-L300 is equipped with digital input/output terminals as well as analog

input/output terminals. Therefore, “dBFS”is used as the absolute value of a signal

level when the parameter for digital signal processing is set. For the relation between

the analog and digital levels, refer to 5-2, “Level Diagram.”

2. GLOSSARY

OVER/GR(dB)

36912151821242730

CH-1

CH-2

P01

In =

DYNAMICS(A)

3. CONTROLS AND FUNCTIONS

3-1. Front Panel

POWER

ON OFF

−12 +12

INPUT LEVEL

CH-1 CH-2

OVER

OUTPUT LEVEL

CH-1 CH-2

INPUT

ANALOG

DIGITAL

PLL

LIMITER / DELAY

OVER/GR(dB)

36912151821242730

CH-1

CH-2

−+

ADJUST

−+

SELECT

PUSH ENTER/YES

EDIT PROGRAM

SYNC EXIT/NO

LOCK

BYPASS

DIGITAL LIMITER/DELAY SRP-L300

57 98 %#!

"$&

1POWER button

This POWER button turns on and off the power of

the SRP-L300.

When the power is turned on, the back light on the

display screen lights and the previous signal

processing condition returns automatically.

2INPUT LEVEL knobs (CH-1 and CH-2)

The INPUT LEVEL knobs are used to adjust the

level of the input signals from the analog input

terminals.

In the center position (0 dB), a internally head room

is 20 dB with respect to the input signal of a

reference level (+4 dBs).

For how to adjust these knobs, refer to 5-2, “Level

Diagram”and 5-3, “Unity Gain.”

3OVER indicators (CH-1 and CH-2)

The OVER indicators light when signals exceeding

the maximum input level are input from the analog

input terminals.

Actually, the OVER indicators light from the level

slightly lower than the level in which a signal is

clipped.

Decrease the level using the INPUT LEVEL knobs

when they light frequently.

4OUTPUT LEVEL knobs (CH-1 and CH-2)

The OUTPUT LEVEL knobs are used to adjust the

level of the output signals from the analog output

terminals.

In the center position (0 dB), the digital full scale

output signal for digital signal processing is output

in a level of +24 dBu.

To adjust these knobs, refer to 5-2, “Level Diagram”

and 5-3, “Unity Gain.”

Note

5INPUT indicator

The input indicator selected by internal parameter

“Input Select”lights. In the analog and digital

mixing state, both the ANALOG and DIGITAL

lamps light.

For more details of the input selection, refer to 6-1,

“Input Block.”

6PLL indicator

The PLL indicator indicates that a digital signal is

properly transmitted and that the SRP-L300 receives

it.

Moreover, this indicator indicates the existence of

physical transmission. The PLL indicator also lights

when a silent signal is being transmitted because it

is not related to the level of an audio signal.

“PLL”is an abbreviation for Phase-Locked Loop.

The circuit that operates in synchronization with a

digital input signal is called a PLL circuit. The PLL

indicator lights when the PLL circuit operates

normally.

7Display

The display is used the user setting state or level

meter with a character display of 16 characters ×2

lines.

The back light goes on when the power is turned on.

8SELECT knob and SELECT (ENTER/YES)

button

Operate the knob and button as described below if

necessary.

Turn clockwise or counterclockwise.

Press.

Turn while pressing and holding.

The meaning of the operation varies depending on

the state at that time.

Turn the knob and button to select various items.

Press them to enter the contents of selection or to

enter “YES”for a question from the system.

In this manual, the “SELECT”knob is used for

rotation operations, and the “SELECT”button for

pressing operations.

9ADJUST knob and ADJUST button

The knob and button are mainly used to adjust the

parameter value during edit operation.

In this manual, the “ADJUST”knob is used for

rotation operations, and the “ADJUST”button for

pressing operations.

To recall the last displayed parameter again, press

the ADJUST button. The user can then immediately

start the edit operation.

For more details, refer to 7-1, “Basic Edit

Operation.”

!º EDIT button

Press this button to set and change the parameter of

a signal processing block. The “EDIT state”is then

entered.

!¡ SYNC button and SYNC indicator

The SYNC button is used to determine whether to

interlock the CH-1 and CH-2 parameters during

parameter setting and change.

For more details, refer to 7-2, “SYNC.”

!™ PROGRAM button

Press this button to recall a program from memory

or store it.

!£ EXIT/NO button

Press this button to exit the current state or return

the operation procedure by one step.

This button is also used to enter “NO”for a question

from the system.

!¢ LOCK button and LOCK indicator

Press this button to lock the operation of the

SRP-L300 and to prevent the state at that time from

being changed easily.

The LOCK indicator lights when the SRP-L300 is

locked.

For more details of the “LOCK”function, refer to

the “LOCK Function”in Section 9.

!∞ BYPASS button and BYPASS indicator

The BYPASS button is used to switch the output

signals of a non-signal processed sound (bypass

state) and signal processed sound.

The BYPASS indicator lights in the bypass state.

3-2. Rear Panel

THRU IN OUT

REMOTE(RS-232C) DIGITAL I/O ANALOG OUTPUT ANALOG INPUT

CH-2 CH-2CH-1 CH-1

STACKING

CH-2 CH-1

PUSH PUSH PUSH

7412

1ANALOG INPUT terminals (CH-1 and CH-2)

Analog audio signals are input to the ANALOG

INPUT terminals.

(The terminal is XLR-3-31.)

Electronic balancer circuit

(1: GND, 2: HOT, 3: COLD)

2ANALOG STACKING terminals (CH-1 and CH-

The ANALOG STACKING terminals are directly

connected to the ANALOG INPUT terminals. These

terminals are used to input the analog input signal

of the SRP-L300 to other equipment.

(The terminal is XLR-3-32.)

Electronic balancer circuit

(1: GND, 2: HOT, 3: COLD)

3ANALOG OUTPUT terminals (CH-1 and CH-2)

The analog signals after signal processing are output

from the ANALOG OUTPUT terminals.

(The terminal is XLR-3-32.)

Electronic balancer circuit

(1: GND, 2: HOT, 3: COLD)

4DIGITAL IN terminal

Digital audio signals based on the AES/EBU format

are input to the DIGITAL IN terminal.

(The terminal is XLR-3-31.)

5DIGITAL THRU (digital through output)

terminal

The DIGITAL THRU terminal is used to input the

digital input signal of the SRP-L300 directly to other

equipment.

Since signals are output through an internal buffer,

they can also be input to multiple SRP-L300s via

series connection.

However, no signal is output when the power is

turned off. (The terminal is XLR-3-32.)

6DIGITAL OUT terminal

The digital signal after signal processing is output

from the DIGITAL OUT terminal.

The digital output signal conforms to the AES/EBU

format.

The sampling frequency is 48 kHz.

(The terminal is XLR-3-32.)

Note

For more details of the digital input and output, refer to

the “Digital Input and Output”in Section 10.

7REMOTE terminal

The REMOTE terminal is used to control the

SRP-L300 from a remote location using a personal

computer.

Use an RS-232C signal of 9600 bps during

communication (9-pin D-sub (male)). This connecter

is adapted for PC remote terminal with cross cable.

Please consult a Sony dealer for the communication

protocol.

4. BASIC OPERATION

The flow of basic operation is described below.

For more details of each operation, refer to the corresponding pages.

1Recall one of the P01, P02, and P03 preset programs corresponding to the

algorithm used.

For the algorithm, refer to page 13.

For the recall operation, refer to page 32.

2Execute the edit operation (change the parameter) and change the effect.

For the edit operation, refer to page 25.

3Store the created program.

For the store operation, refer to page 33.

Reference

Each preset program is used as a program of the algorithm below.

P01 (A) Start program of the dynamics algorithm

P02

(B)

Start program of the DAL-1000 algorithm

P03 (C) Start program of the tap delay algorithm

The three programs are the source of program creation based on each algorithm. These programs are

based on a parameter that gives no effect when they are recalled.

The programs that were created in advance have been installed in P04 or later preset programs. These

preset programs can also be recalled or modified in parameter before use.

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