Miranda ASD-231i Operating instructions

Brand: Miranda

Model: ASD-231i

Category: Supplementary music equipment

Type: Operating instructions

Miranda ASD-231i is a multi-standard, fully digital, 12-bit decoder with 3D and 2D adaptive decoding capabilities allowing optimal picture quality with virtually no cross-color or cross-luma artifacts. It features an internal/external timebase corrector (TBC) to maintain the stability of the incoming video signal and reduce jitter.

ASD

231i

NTSC/PAL to 4:2:2

Adaptive Decoder

with TBC

Guide to Installation and Operation

M212-0900-101

Specifications may be subject to change.

Printed in Canada

August 2002

ASD

231i

imaging Series

Miranda

Technologies inc.

3499 Douglas-Floreani, St-Laurent

(Québec) Canada, H4S 2C6

WARRANTY POLICIES

Warranty Statement

Miranda Technologies Inc. warrants that the equipment it manufactures shall be free from defects in material and

workmanship for a period of two (2) years from the date of shipment from the factory. If equipment fails due to such defects,

Miranda Technologies Inc. will, at its option, repair or provide a replacement for the defective part or product. Equipment that

fails after the warranty period, has been operated or installed in a manner other than that specified by Miranda, or has been

subjected to abuse or modification, will be repaired for time and material charges at the Buyer’s expense.

All out-of-warranty repairs are warranted for a period of ninety (90) days from the date of shipment from the factory.

Miranda Technologies Inc. makes no other warranties, expressed or implied, of merchantability, fitness for a particular

purpose or otherwise. Miranda’s liability for any cause, including breach of contract, breach of warranty, or negligence, with

respect to products sold by it, is limited to repair or replacement by Miranda, at its sole discretion. In no event shall Miranda

Technologies Inc. be liable for any incidental or consequential damages, including loss of profits.

Effective January 1, 2002

Warranty Exchange Policies

Miranda Technologies Inc. warrants that the equipment it manufactures shall be free from defects in materials and

workmanship for a period of two (2) years from the date of shipment from the factory. If equipment fails due to such defects,

Miranda will provide repair of the failed unit under the terms of the Miranda warranty.

If the equipment has been proven to be defective on arrival, Miranda will ship a new product in exchange, usually within 36

hours of factory notification.

If the equipment to be repaired is essential and the customer so requests, Miranda will, at its option, provide a service

replacement or loaner part or product, usually within 36 hours of factory notification, weekends and holidays excluded.

All warranty exchange or loaner parts or products shall be shipped to the Buyer with a packing list clearly describing the

items and stating the date of shipment. Repaired parts or products will be shipped to the Buyer with a similar packing list. In

the case of exchange, the defective products or parts must be returned to Miranda within fifteen (15) days from receipt by

the customer of the exchange product. In the case of a loaner, the loaned products or parts must be returned to Miranda

within fifteen (15) days from receipt by the customer of the repaired equipment.

If the equipment is not returned within fifteen (15) days, as described for either exchanges or loans, A Rental Invoice will be

generated. Rental terms will be fifteen (15) percent of the current list price of the products or parts per month or a fraction

thereof. Before returning the equipment to Miranda Technologies Inc., for any reason, the Buyer must first obtain a Return

Authorization Number from Miranda Technologies Inc. Miranda Technologies Inc will pay freight and insurance charges for

the delivery of the loaner or exchange products or parts. Freight and insurance charges for the return of the defective

product or part will also be paid by Miranda Technologies.

Out-Of-Warranty Repair Policy

Miranda will repair equipment which is out of Warranty. The current pricing structure for this service is available from the

Miranda web site at

www.miranda.com

or from Miranda Technical Support Services at (514) 333-1772. All out-of-warranty

repairs are warranted for a period of 90 days from the date of shipment from the factory. Before returning the equipment to

Miranda Technologies Inc., for any reason, the Buyer must first obtain a Return Authorization Number from Miranda

Technologies Inc. In the case of a product deemed by Miranda to be beyond repair, the customer must purchase a new

product at current retail prices.

The Buyer will pay freight and insurance charges for the return of the defective product or part to the manufacturer for repair.

Miranda

Technologies will pay freight and insurance charges for the return of the repaired product or part to the Buyer.

Out-Of Warranty Equipment Updates and Spare Parts Policy

Miranda Technologies’ current pricing structure for out-of-warranty equipment updates, or the sale of spare parts, is

available from Miranda Technical Support Services at (514) 333-1772.

SAFETY COMPLIANCE

This equipment complies with:

- CSA C22.2 No. 950 / Safety of Information Technology equipment.

- UL No. 1950 / Safety of Information Technology equipment.

WARNING

An appropriately listed/certified mains supply power cord must be used for the connection of the

equipment to the mains voltage either 120V or 240V.

CAUTION

These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric

shock, do not perform any servicing other than that contained in the operating instructions unless you are

qualified to do so. Refer all servicing to qualified service personnel.

- EN60950: 1992 (incorporating A1, A2, A3, A4 and A11)/European Standard - Safety of Information

Technology equipment.

Electromagnetic Compatibility

- This equipment has been tested for verification of compliance with FCC Part 15, Subpart B, class A

requirements for Digital Devices.

- This equipment complies with the requirements of EN55022 Class A, Electromagnetic Emissions, En

61000-3-2, Disturbance in Supply Systems and EN55025, Electromagnetic Immunity.

How to contact us:

Head Office Miranda Europe Miranda Asia

Miranda Technologies Inc. 222, 226 Rue De Rosny Mita Nexus Bldg. 2F

3499 Douglas-B.-Floreani 93100 Montreuil 1-3-33 Mita, Minato-Ku

St. Laurent (Montreal), Que. H4S 1Y6 France Tokyo, Japan 108-0073

Canada

Tel +1 (514) 333-1772 +33 1 55 86 87 88 +81 3 5730 2988

Fax +1 (514) 333-6914 +33 1 55 86 00 29 +81 3 5730 2973

Toll free: 1-800-224-9828

www.miranda.com

CONTENTS

page

1 ASD-231i NTSC/PAL to 4:2:2 Adaptive Decoder with TBC........ 1

1.1 Introduction.................................................................................................. 1

1.2 Features....................................................................................................... 1

2 Installation............................................................…..................... 3

2.1 Unpacking................................................................................................... 3

2.2 ASD-231i Mechanical Installation................................................................ 3

2.2.1 imaging Quartet Series Frames..................................................... 3

2.2.2 imaging Symphonie Frame……………........................................... 3

2.2.3 imaging Solo Frame........................................................................ 3

2.3 Rear Panel Label......................................................................................... 4

2.3.1 imaging Quartet Series/Solo Frames……...............................…… 4

2.3.2 imaging Symphonie Frame………………..........................……….. 5

2.4 ASD-231i Electrical Installation................................................................... 6

3 Operation ..................................................................................... 9

3.1 ASD-231i User Interface.............................................................................. 9

3.2 Menu Introduction…………………………...........................………………… 9

3.3 Input Status Monitoring................................................................................ 12

3.4 Source Type Selection................................................................................. 12

3.5 Input Format Selection................................................................................ 12

3.6 Decoding Filter............................................................................................ 13

3.7 Timing .………………………………………..………….........................…… 13

3.7.1 Vertical Timing……………………..…………..........................……. 14

3.7.2 Horizontal Timing………………………………….........................… 14

3.8 Gain .………………………………………………..…….......................….. 14

3.8.1 Brightness………………………………...........................……..…… 14

3.8.2 Saturation………………………………..........................…………… 15

3.8.3 Overall Gain……………………………..........................…………… 15

3.9 Setup ................................................…................................................... 16

3.10 Hue ....................................................................................................... 16

3.11 Freeze Selection......................................................................................... 16

3.12 VANC Selection........................................................................................... 17

3.13 Closed Captioning Selection........................................................................ 18

3.14 True PAL Selection…………………………………..........................……….. 18

3.15 Factory Reset...…........................................................................................ 18

3.16 Color Bar Generator.................................................................................... 19

4 Stored Configurations.................................................................. 21

5 Specifications................................................................................ 23

1 ASD-231i NTSC/PAL to 4:2:2 Adaptive Decoder with TBC

1.1 Introduction

The ASD-231i is a multi-standard, fully digital, 12-bit decoder with 3D and 2D adaptive decoding

capabilities allowing optimal picture quality with virtually no cross-color or cross-luma artifacts. A

built-in Time-Base Corrector (TBC) supports unstable (VHS) inputs. The TBC mode offers an

auto decoding filter selection which automatically switches between comb and bandsplit filtering

on the luminance path only.

The ASD-231i offers the possibility of connecting a reference input for complete studio

integration; it synchronizes serial 4:2:2 video to a local reference input. If no external reference is

detected, the ASD-231i locks on to the composite input.

If the input signal degrades or disappears, the ASD-231i can be set to freeze on the last error-

free field, switch to black, or disable the output 4:2:2 signals.

For those audio users requiring video delay tracking, a video processing delay signal provides

the ASD-231i input-output delay at all times.

The ASD-231i, with its built-in frame synchronizer and Automatic Gain Control supports stable,

unstable, and satellite inputs. All four 4:2:2 serial digital video signals respect the SMPTE 259M-

C standard. Also, the serial digital video outputs carry EDH data according to the SMPTE RP165

standard. Additionnally, the ASD-231i has a built-in color bars test signal.

The ASD-231i is a member of the imaging family of digital video modules and therefore requires

the imaging Quartet, imaging Symphonie, or imaging Solo frame for mounting and power.

Figure 1.1 ASD-231i Block Diagram

1.2 Features

• NTSC, PAL, PAL-M, PAL-N, and SECAM composite inputs supported with passive loop-through

• Automatic or forced detection of composite input

• Analog reference input supported for complete studio timing

• Unstable (VCR) sources supported

COMPOSITE

4:2:2 OUT

REMOTE CONTRO

Microcontroller

Genlock

Frame

Sync/

Delay

Adaptive

Decoder

EDH

REF IN

Genlock

Adaptive

TBC

DELAY

12-Bit

ADC

• 4 serial 4:2:2 outputs conforming to the SMPTE 259M-C standard

• Built-in frame synchronizer

• Built-in Automatic Gain Control (AGC)

• Adaptive Time-Base Corrector: automatic selection of 2D comb or bandsplit filtering on Y channel

• 2X oversampling

• 3D adaptive decoding

• True PAL decoding

• Video processing delay signal

• EDH insertion

• Built-in test signal

2 Installation

2.1 Unpacking

Make sure the following items have been shipped with your ASD-231i. If any of the following

items are missing, contact your distributor or Miranda Technologies Inc.

• ASD-231i NTSC/PAL/SECAM to 4:2:2 Adaptive Decoder with TBC

• ASD-231i rear panel labels

• This manual

2.2 ASD-231i Mechanical Installation

The ASD-231i must be mounted within Quartet, Quartet-C, Quartet-M, Quartet-M-A75, Quartet-

M-A110, Symphonie (using Symphonie-R-M rear module), or Solo imaging frames in order to

provide power to the module. This section describes how to install the ASD-231i in any of these

frames. It is not necessary to switch off the power from these frames when installing or removing

the ASD-231i.

2.2.1 imaging Quartet Series Frames

To install this module into Quartet, Quartet-C, Quartet-M, Quartet-M-A75 or Quartet-M-A110

follow these steps. For a closer look at module installation and removal, refer to the frame's

Guide to Installation and Operation.

1. Remove the frame's front panel by rotating the thumb screws counter-clockwise. Pull on the

handles.

2. Select an empty slot.

3. Carefully place the ASD-231i between a set of module guides and gently push the module

towards the rear of the frame until the module's edge connector is secured to the backplane.

Pull lightly on the module verifying that it does not move.

4. Replace the frame's front panel. Make sure to rotate the thumb screws clockwise in order to

secure it to the chassis.

2.2.2 imaging Symphonie Frame

To install this module into Symphonie follow these steps. For a closer look at module installation

and removal, refer to the frame's Guide to Installation and Operation.

1. Remove the front panel door by pulling on the door handles and gently lowering it.

2. Select an empty compartment.

3. Carefully place the module between the module guides and slowly push the module towards

the rear of the frame until the module's edge connector is secured to its rear module. A light

pressure to mate the connectors may be required. Pull lightly on the module verifying that it

does not move.

4. Replace the front panel door.

2.2.3 imaging Solo Frame

To install this module into Solo follow these steps. For a closer look at module installation and

removal, refer to the frame's Guide to Installation and Operation.

1. In order to remove the frame's front panel, gently pull on it.

2. Carefully place the ASD-231i between the module guides and gently push the module

towards the rear of the frame until the module's edge connector is secured to the backplane.

Pull lightly on the module verifying that it does not move.

3. Replace the frame's front panel.

2.3 Rear Panel Label

Connector labels have been shipped with the ASD-231i. These labels are to be installed on the

frames’ rear panel in order to identify the module's external connectors.

2.3.1 imaging Quartet Series/Solo Frames

To install the Quartet/Quartet-C/Quartet-M/Quartet-M-A75/Quartet-M-A110/Solo label, follow

these steps while referring to Figure 2.1.

1. Remove the screws associated with the ASD-231i connectors.

2. Carefully apply the label to the connectors.

3. Replace the screws making sure not to damage the label.

Figure 2.1 Quartet/Solo rear panel label installation

ASD-231i label

imaging Quartet, Quartet-C, Quartet-M,

Quartet-M-A75, Quartet-M-A110,

imaging

Solo

(top view)

2.3.2 imaging Symphonie Frame

To install the Symphonie label, follow these steps while referring to Figure 2.2.

1. On Symphonie’s rear panel, locate the appropriate connectors.

2. Remove the rear label mounting screws from the rear module.

3. Carefully apply the label to the connectors making sure the label’s text is read from top to

bottom.

4. Replace the screws making sure not to damage the label.

Figure 2.2 Symphonie rear panel label installation

2.4 ASD-231i Electrical Installation

When connecting the ASD-231i to external equipment, make sure that all serial digital

connections are point-to-point. For instance, there must be a point-to-point connection between

a 4:2:2 OUT BNC and target equipment. If a T-connector is used to connect other equipment,

the maximum specified cable length is no longer valid. Make sure the output cables have

maximum lengths of 250 m (850') each.

COMPOSITE IN - composite video with passive loop-through

Connect a NTSC, PAL, PAL-M, PAL-N, or SECAM composite video source to COMPOSITE

IN. Refer to Figure 2.2. NTSC signals must conform to the SMPTE 170M standard; PAL

(625/50), PAL-M (525/60), PAL-N (625/50), and SECAM (625/50) signals must conform to

the ITU (CCIR) 624-4 standard.

If the loop-through output is not used, terminate it with a 75 ohm termination.

REF IN - reference input with passive loop through

If you wish to reference the ASD-231i to the rest of your facilities, connect a studio reference

signal to the BNC labeled REF IN. The ASD-231i accepts SMPTE 170M/PAL ITU 624-4 or 2

Vpp/4 Vpp composite sync reference signals. Refer to Figure 2.2.

When using the Quartet, Quartet-C, Solo or Symphonie-R-C, the ASD-231i provides a loop

through output of the studio reference signal. Make sure to terminate this output with a 75

ohms terminator when it is not being used.

A valid analog composite reference signal will turn on the REF indicator located on the

module’s front end. The reference signal must be NTSC for 60 Hz sources (NTSC and PAL-

M) and PAL for 50 Hz sources (PAL, PAL-N, and SECAM). If there exists a line format

mismatch between the reference input and the composite input, the REF indicator flashes.

4:2:2 OUT 1, 2, 3 and 4 - serial digital video outputs

The ASD-231i provides 4 video output BNCs. These BNCs, labeled 4:2:2 OUT 1, 2, 3 and 4,

provide the decoded video signal conforming to the SMPTE 259M-C standard.

Delay – video processing delay signal

When using a Quartet-M, -M-A75, -M-A110 or Symphonie-R-M, the ASD-231i provides a

video processing delay signal through an RJ-45 connector using RS-422A transport

standard. This signal may be used by an audio processor to avoid lip sync problems.

Connector pinout is detailed on Figure 2.3.

Figure 2.2 ASD-231i electrical installation

Figure 2.3 Video processing delay connector pinout

2NC

3GND

4DELAY (+)

5DELAY (-)

6NC

7NC

8NC

9NC

10 NC

1NC

RJ-45 Connector

Pin Location

Composite

SMPTE 259M-C

4:2:2 video outputs

Studio reference

or black input

Reference

loop through output

Analog composite input

(NTSC, PAL, PAL-M,

PAL-N, SECAM)

loop through output

COMPOSITE IN

4:2:2 OUT

ASD-231i NTSC/PAL TO 4:2:2 DECODER WITH TBC

REF IN

123 4

DELAY

Quartet-M

Quartet-M-A75

Quartet-M-A110

Symphonie-R-M

COMPOSITE IN

4:2:2 OUT

ASD-231i NTSC/PAL TO 4:2:2 DECODER WITH TBC

REF IN

1234

Quartet

Quartet-C

Solo

Symphonie-R-C

Composite

loop through output

Video processing

delay output

3 Operation

3.1 ASD-231i User Interface

Figure 3.1 illustrates the ASD-231i's user interface situated at the front end of the module. The

interface components include the following:

• 4-character dot matrix display and 4 push-buttons for menu access

• Input status monitoring: reference and composite source signals

• Source Type selection

• Test pattern selection

Figure 3.1 ASD-221i user interface

3.2 Menu Introduction

Most ASD-231i parameters are accessed and changed via an easy-to-use menu. The flow chart

of Figure 3.2 outlines the entire ASD-231i menu path. The menu consists of 11 major functions:

format, filter, timing, gain, setup, hue, freeze mode, vertical ancillary mode, CC, true PAL filtering,

and factory reset. Each menu is described throughout this section. The following items should

be remembered when accessing the menu.

Normal Mode

When the menu is not being accessed we refer to this as normal mode. When in normal mode,

the current format loaded by the ASD-231i is displayed and the display is dimmed.

Navigating Through the Menu

The front panel push-buttons are used to navigate the menu of Figure 3.2. The following

describes the function of each push-button when navigating through the menu.

+: Press + to move down in the menu or to increase the parameter value. For example,

if you are currently at GAIN-BRI, pressing + will scroll downwards through the

ASD-231i NTSC/PAL TO 4:2:2 DECODER WITH TBC

ESC

SELECT

TEST

REF

ERR

STUDIO SATELLITE

VCR

SOURCE TYPE

selections SAT and ALL. Depressing + during an adjustment will increase the

parameter value at a faster rate.

-: Press - to move up in the menu or to decrease the parameter value. For example, if

you are currently at TIMG-HOR, pressing - will scroll upwards to the selection VERT.

Depressing - during an adjustment will decrease the parameter value at a faster rate.

SELECT: Changes to a menu parameter are stored immediately to non-volatile memory. For

example, after the desired setup has been set, press SELECT. The menu returns to

STUP and the new setup value is stored for the current format.

ESC: If ESC is pressed after making changes to a parameter, the parameter is reset to the

value it had prior to the change. For example, after changing the brightness, press

ESC. The menu is returned to BRI and the previous brightness gain is reloaded.

Automatic Exit From Menu After 1-Minute Interval

If the menu is currently being accessed and no push-button has been pressed for 1 minute, the

ASD-231i automatically exits from the menu thereby returning to normal mode. Also, changes

made to the current parameter will be stored.

Figure 3.2 ASD-231i menu structure

format S E

FRMT

S E [AUTO

,NTSC,PAL,PALM,PALN,SECM,BW]

FLTR

S E [A-3D,A-2D,3D,2D,SPLT] (Studio/Satellite)

+ [SPLT,AUTO] (VCR)

(No FLTR selection during SECAM)

TIMG

S E

VERT

S E [0,…,524] (step=1, unit=LINE) (NTSC/PAL-M)

+ + [0,…,624] (step=1, unit=LINE) (PAL/PAL-N/SECAM)

HOR

S E [0,…,63.5] (step=0.04, unit=us) (NTSC/PAL-M)

[0,…,64.0] (step=0.04, unit=us) (PAL/PAL-N/SECAM)

GAIN

S E

BRI

S E [-500,…,0,…,+500] (step=1)

+ +

SAT

S E [-500,…,0,…,+500] (step=1)

ALL

S E [VAR+,NOM,VAR-,VAR]

STUP

S E [-15,…,7.5,…,15.0] (step=0.20, unit=IRE) (NTSC)

+ [-105,…,0,…,105] (step=1.25, unit=mV) (PAL-M)

[-107,…,0,…,107] (step=1.28, unit=mV) (PAL/PAL-N/SECAM)

HUE

S E [-180,…,0,…,180] (step=0.25, unit=DEG) (NTSC/Studio, NTSC/Satellite)

+ [-180,…,0,…,180] (step=1.50, unit=DEG) (NTSC/VCR only)

FRZE

S E [FLD,BLAK,KILL,OFF] (Not accessible during Studio with no ref.)

VANC

S E

PROC

S E [BLNK,DECD,PASS]

+ +

STUP

S E [OFF,ON] (NTSC/PAL-M only)

TPAL

S E [OFF,ON] (PAL/PAL-M/PAL-N only)

FACT

S E

S S=Select

+ E=Escape

- Underline indicates default value

YES

3.3 Input Status Monitoring

REF

The REF LED turns on to indicate a valid composite signal has been detected on the REF IN

BNC. It will remain off if no reference signal is installed. If there exists a line format mismatch

between the reference input and the composite input, the REF LED flashes. To avoid this

situation, make sure both the reference and source signals are 525 (60Hz) lines or 625 (50 Hz)

lines.

IN ERR

The IN ERR (error) LED will turn on if no composite input signal is installed. Also, if a standard is

forced, for example, NTSC and the input signal detected is other than a NTSC signal, the IN ERR

LED will indicate an error. Make sure the source signal is properly connected to COMPOSITE IN

and verify for any source equipment errors. It is highly recommended to enable black & white

input detection when working with monochrome signals. Refer to section 3.5, Input Format

Detection.

3.4 Source Type Selection

The ASD-231i accepts three different types of sources: STUDIO, SATELLITE and VCR.

Select STUDIO sosurce type when using high quality sources, SATELLITE for satellite sources,

and VCR for unstable sources.

Changes to the input modes can only be made when in normal mode. Therefore, make sure you

have left the menu. Press the DOWN(-) push-button to scan through the available selections.

The selected source type turns on the appropriate LED.

N.B.: There is no STUDIO option available during SECAM operation.

3.5 Input Format Detection

The ASD-231i supports two modes of format detection: automatic input format detection and

forced input format selection.

Automatic Format Detection

During this mode of detection, the ASD-231i detects the type of input and automatically switches

to that format by loading the decoder with the format’s parameters. To enable automatic input

detection follow these steps:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press SELECT to enter the FRMT menu. The current format is displayed.

3. To set automatic detection, press the UP(+) or DOWN(-) push-button until AUTO is

displayed.

4. Press SELECT to store automatic input detection. FRMT is displayed.

5. To enable automatic input detection and return to normal mode, press ESCAPE.

NOTE: During automatic input detection, if the input signal changes while you are

attempting to change the value of a menu function, the ASD-231i exits from the menu,

returns to normal and attempts to locate the correct format. However, this feature is

disabled only when the FRMT menu is being accessed.

Forced Input Format Selection

This mode allows you to select one of the input formats. During this mode of operation, the ASD-

231i remains configured with the format selected at all times regardless of the input signal’s

format. If the input signal’s format is other than that selected, the IN LED will turn on. This

feature is handy when you are certain that the input format will not change. To select the forced

input for forced input detection, follow these steps:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press SELECT to enter the FRMT menu. The current format is displayed.

3. To force an input format, use the UP(+) or DOWN(-) push-button to select between NTSC,

PAL, PALM (PAL-M), PALN (PAL-N), SECM (SECAM), and BW (monochrome).

4. Press SELECT to store the new forced input selection. FRMT is displayed.

5. To return to normal mode, press ESCAPE.

Monochrome Input Signal

When working with monochrome input signals, set the FRMT menu to BW to accept a black and

white input. Selecting BW forces the ASD-231i to disable decoding of the input signal. During

BW mode, automatic detection is made between 525- and 625-line formats. Detecting a 525-line

format signal will load the NTSC format and a 625-line format will load the PAL format.

3.6 Decoding Filter

The ASD-231i provides the 5 types of decoding filters which are listed in Table 3.1. The selection

of a decoding filter will depend highly on the nature of the input composite signal. For example,

choosing between A-3D and A-2D will depend highly on the content of your source. Most

artifacts will disappear with A-3D but a ghosting effect may appear with moving images. On the

other hand, A-2D may be more adept with fast moving images. The best way to decide which

decoding filter to use is to try out each one and compare their performances with the actual

source.

Table 3.1 Available decoding filters and recommended usage

Decoder Application

A-3D Static images requiring optimum performances (adaptive)

A-2D Fast moving images requiring optimum performances (adaptive)

3-D Static images (non-adaptive)

2D Fast moving images (non-adaptive)

SPLT Lower quality source

AUTO Bandsplit filter for unstable VCR signals

Adaptive luma comb decoding for stable VCR signals

N.B.: There is no filter selection available during SECAM operation.

3.7 Timing

When the ASD-231i is set to STUDIO source type and there is no reference signal installed, it

operates in Frame Delay/Frame Buffer mode: the timing adjustment sets the processing delay

between the input and output signals. Note that when operating in Frame Delay/Frame Buffer

mode, the minimum vertical timing adjustment value is fixed by the number of processing steps

selected (see table 3.2 for details) . However, when a reference signal is installed, the ASD-231i

is in Frame Synchronizer mode: the timing adjustment sets the processing delay between the

reference and output signals.

3.7.1 Vertical Timing

The vertical timing adjustment is made in increments of 1 video line up to 524 lines in NTSC and

PAL-M and 624 lines in PAL, PAL-N, and SECAM. Follow these steps in order to adjust vertical

timing:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press the DOWN(-) push-button until TIMG is displayed.

3. Press SELECT to enable the phase menu. VERT is displayed.

4. Press SELECT to enable the vertical timing menu. The current timing delay in video lines is

displayed.

5. Press UP(+) to increase the timing delay and press DOWN(-) to decrease the timing delay.

Press UP(+) and DOWN(-) simultaneously to set the timing to 0 lines.

6. Press SELECT to store the new vertical timing for the current format. VERT is displayed.

7. Press ESCAPE to return to TIMG.

8. To return to normal mode, press ESCAPE.

Note: Vertical timing is not available when using SATELLITE or VCR source types and

when no reference signal is detected.

When operating in Frame Buffer/Frame Delay mode (Studio source type w/o

reference signal), the minimum vertical timing adjustment value changes with the

number of processing steps selected. Table 3.2 shows the minimum values for

different processing selections:

Table 3.2 Minimum Vertical Timing Adjustment for Decoding Filter and TPAL selection (see section 3.14

for details on TPAL Selection)

Decoding Filter TPAL Minimum Vertical Timing

Adjustment Value

A-3D / 3D OFF 1

A-2D / 2D OFF 2

SPLT OFF 2

AUTO (VCR) OFF 2

A-3D / 3D ON 2

A-2D / 2D ON 3

SPLT ON 3

AUTO (VCR) ON 3

3.7.2 Horizontal Timing

The horizontal timing adjustment is made in increments of 1/2 pixels up to a range of one video

line (63.5 us in NTSC and PAL-M and 64.0 us in PAL,PAL-N, and SECAM). Follow these steps

in order to adjust horizontal timing:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press the DOWN(-) push-button until TIMG is displayed.

3. Press SELECT to enable the phase menu. VERT is displayed.

4. Press UP(+) or DOWN(-) to display HOR.

5. Press SELECT to enable the horizontal timing menu. The current timing delay in us is

displayed.

6. Press UP(+) to increase the timing delay and press DOWN(-) to decrease the timing delay.

Press UP(+) and DOWN(-) simultaneously to set the timing to 0 us.

7. Press SELECT to store the new horizontal timing for the current format. HOR is displayed.

8. Press ESCAPE to return to TIMG.

9. To return to normal mode, press ESCAPE.

Note: Vertical timing is not available when using SATELLITE or VCR source types and

when no reference signal is detected.

3.8 Gain

The brightness (luminance) and saturation (chrominance) gains can be controlled independently

or simultaneously, on a range of –500 to +500 by steps of 1 unit.

3.8.1 Brightness

Follow these steps in order to set the brightness gain level:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press the DOWN(-) push-button until GAIN is displayed.

3. Press SELECT to enable the gain menu. BRI is displayed.

4. Press SELECT to enable the brightness gain menu. The current gain level is displayed.

5. Use UP(+) or DOWN(-) to set the required brightness gain level. For a quicker response,

keep the push-button depressed. Press UP(+) and DOWN(-) simultaneously for unity gain.

6. Press SELECT to store the new gain level for the current format. BRI is displayed.

7. Press ESCAPE to return to GAIN.

8. To return to normal mode, press ESCAPE.

3.8.2 Saturation

Follow these steps in order to set the saturation gain level:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press the DOWN(-) push-button until GAIN is displayed.

3. Press SELECT to enable the gain menu. BRI is displayed.

4. Press UP(+) or DOWN(-) until SAT is displayed.

5. Press SELECT to enable the saturation gain menu. The current gain level is displayed.

6. Use UP(+) or DOWN(-) to set the required saturation gain level. For a quicker response,

keep the push-button depressed. Press UP(+) and DOWN(-) simultaneously for unity gain.

7. Press SELECT to store the new gain level for the current format. SAT is displayed.

8. Press ESCAPE to return to GAIN.

9. To return to normal mode, press ESCAPE.

3.8.3 Overall Gain

The overall video gain can be controlled by following these steps:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press the DOWN(-) push-button until GAIN is displayed.

3. Press SELECT to enable the gain menu. BRI is displayed.

4. Press UP(+) or DOWN(-) until ALL is displayed.

5. Press SELECT to enable the overall gain menu. The current setting, indicating the overall

gain level, is displayed. See Table 3.3 below for a description of each setting.

6. Use UP(+) or DOWN(-) to select the desired overall gain setting. For a quicker response,

keep the push-button depressed. Press UP(+) and DOWN(-) simultaneously to set both the

brightness and saturation gains to unity.

7. Press SELECT to store the new brightness and saturation gain levels for the current format.

ALL is displayed.

8. Press ESCAPE to return to GAIN.

9. To return to normal mode, press ESCAPE.

Table 3.3 Overall Gain setting description

Setting Description (“BRI” is brightness and “SAT” is saturation)

NOM BRI = 0 = SAT

VAR+

(BRI >

0 and SAT > 0) or (BRI > 0 and SAT > 0)

VAR-

BRI < 0 and SAT < 0

VAR

(BRI >

0 and SAT < 0) or (BRI < 0 and SAT > 0)

3.9 Setup

-15 IRE to +15 IRE of setup may be removed from the input signal in increments of 0.2 IRE for

NTSC signals, 1.25 mV for PAL-M signals and 1.28 mV for PAL/PAL-N/SECAM signals. At all

times, the selected setup should be equal to the setup present on the input signal. Follow these

steps in order to set the setup:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press the DOWN(-) push-button until STUP is displayed.

3. Press SELECT to enable the setup menu. The current setup in IRE units for NTSC signals

or mV for all PAL and SECAM signals is displayed.

4. Press UP(+) or DOWN(-) to set the required setup. For a faster response, keep the push-

button depressed. Press UP(+) and DOWN(-) simultaneously to set 7.5 IRE setup in NTSC

or 0 mV in PAL/PAL-M/PAL-N/SECAM.

5. Press SELECT to store the new setup for the current format. STUP is displayed.

6. To return to normal mode, press ESCAPE.

3.10 Hue

The ASD-231i can adjust hue level when in NTSC input mode, from –180º to +180º in increment

of 0.25 degrees (1.5 degrees in VCR mode). Follow these steps in order to set the hue level:

1. Press SELECT to enter the menu. FRMT is displayed.

2. Press the DOWN(-) push-button until HUE is displayed.

3. Press SELECT to enable the Hue menu. The hue level is displayed.

4. Press UP(+) or DOWN(-) to set the required level. For a faster response, keep the push-

button depressed. Press UP(+) and DOWN(-) simultaneously to set the hue level to 0º.

5. Press SELECT to store the new level. HUE is displayed.

6. To return to normal mode, press ESCAPE.

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Miranda ASD-231i Operating instructions

Brand: Miranda

Model: ASD-231i

Category: Supplementary music equipment

Type: Operating instructions

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Miranda ASD-231i Operating instructions

Miranda ASD-231i Operating instructions

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