Sony VCR DVW-250P, VCR DVW-250 User Manual

DIGITAL VIDEOCASSETTE RECORDER

DVW-250/250P

OPERATION MANUAL 1st Edition (Revised 3) Serial No. 10001 and Higher

[English]

WARNING

For the customers in the USA and Canada

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.

For the customers in the USA

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.

You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment.

RECYCLING NICKEL-CADMIUM BATTERIES

NICKEL-CADMIUM BATTERY. MUST BE DISPOSED OF PROPERLY.

Nickel-Cadmium batteries are recyclable. You can help preserve our environment by returning your unwanted batteries to your nearest Sony Service Center or Factory Service Center for collection, recycling or proper disposal. Note: In some areas the disposal of nickel-cadmium batteries in household or business trash may be prohibited.

For the Sony Service Center nearest you call 1-800222-SONY (United States only) For the Factory Service Center nearest you call 416499-SONY (Canada only)

The shielded interface cable recommended in this manual must be used with this equipment in order to comply with the limits for a digital device pursuant to Subpart B of Part 15 of FCC Rules.

For the customers in Europe

This product with the CE marking complies with the EMC Directive (89/336/EEC) issued by the Commission of the European Community. Compliance with this directive implies conformity to the following European standards:

• EN55103-1: Electromagnetic Interference (Emission)

• EN55103-2: Electromagnetic Susceptibility (Immunity) This product is intended for use in the following Electromagnetic Environment(s): E1 (residential), E2 (commercial and light industrial), E3 (urban outdoors) and E4 (controlled EMC environment, ex. TV studio).

Table of Contents

Chapter 1 Overview

1-1 Features ........................................................... 1-1

1-1-1 Features of the DVW-250/250P............. 1-1

1-1-2 Digital Betacam Format ......................... 1-1

1-2 System Configuration .................................... 1-2

1-3 Getting the Best Performance from the Unit

.......................................................................... 1-3

Chapter 2 Location and Function of Parts

2-1 Front Panel ..................................................... 2-1

2-1-1 Operating Controls ................................ 2-2

2-1-2 Status Indications................................... 2-4

2-1-3 Adjustment Controls.............................. 2-6

2-1-4 Time Code Setting Controls .................. 2-8

2-2 Connector Panel ........................................... 2-10

2-2-1 Audio Connectors and Controls .......... 2-11

2-2-2 Video Connectors and Controls........... 2-13

2-2-3 Power Supply and Miscellaneous........ 2-15

Chapter 3 Getting Started

3-1 Power Supply .................................................. 3-1

3-1-1 Using a Battery Pack ............................. 3-1

3-1-2 Using an AC Power Supply................... 3-3

3-1-3 Powering On and Off............................. 3-4

3-1-4 Checking the Remaining Battery

Capacity ................................................. 3-4

3-2 Cassettes .......................................................... 3-5

3-2-1 Cassette Types ....................................... 3-5

3-2-2 Preventing Accidental Erasure of

Recordings ............................................. 3-5

3-2-3 Loading and Unloading Cassettes ......... 3-5

3-2-4 Checking the Remaining Tape............... 3-7

3-3 Adjusting the Display and Indicator

Brightness........................................................ 3-8

4-1-5 Selecting the Monitoring Mode for

Recording ............................................... 4-7

4-1-6 Setting Time Values .............................. 4-7

4-1-7 Locking the Time Code Generator to an

External Signal..................................... 4-11

4-2 Procedures for Recording............................ 4-13

4-2-1 Preventing Inadvertent Operations During

Recording ............................................. 4-13

4-2-2 Recording Video and Audio ................ 4-13

4-2-3 Audio Dubbing on the Cue Track........ 4-15

Chapter 5 Playback

5-1 Preparations for Playback............................. 5-1

5-1-1 Selecting the Sound to Be Monitored.... 5-1

5-1-2 Monitoring with a Television Without

Video Input Connections ....................... 5-1

5-1-3 Using a Field Pickup Unit for Signal

Transmission .......................................... 5-2

5-1-4 Playback Synchronized to an Exernal

Signal ..................................................... 5-2

5-2 Procedures for Playback................................ 5-3

5-2-1 Normal Speed Playback......................... 5-3

5-2-2 High Speed Searching ........................... 5-3

5-3 Reading and Displaying Time Code and User

Bits ................................................................... 5-5

Chapter 6 Setup Operations

6-1 Setup Menu Organization ............................. 6-1

6-2 Basic Setup Procedure ................................... 6-2

6-3 Setup Menu Settings ...................................... 6-3

Chapter 7 Editing System Configuration

7-1 When Not Using an Editor ............................ 7-1

7-2 Using an Editor............................................... 7-2

Chapter 4 Recording

4-1 Preparations for Recording........................... 4-1

4-1-1 Connecting Digital Equipment .............. 4-1

4-1-2 Connecting Analog Equipment ............. 4-2

4-1-3 Making Video Input Settings................. 4-3

4-1-4 Making Audio Input Settings ................ 4-5

Appendixes

Warning Indications............................................. A-1

Using the Carrying Case ...................................... A-2

Specifications......................................................... A-3

Index ........................................................................I-1

Table of Contents 1

1-1 Features

Chapter 1 Overview

The DVW-250/250P is a portable videocassette recorder in the Digital Betacam series. It allows recording and playback of sound and picture in the Digital Betacam format.

1-1-1 Features of the DVW-250/ 250P

The following are some of the features of the DVW250/250P.

Flexible input/output interfaces

The unit is designed to accept either analog video (component/composite) and audio signals, or D1 format serial digital video/audio signals. It is therefore highly suitable for use not only in analog systems but also in all-digital systems. Analog input signals pass through the built-in A/D converter, and are converted to 10-bit digital video signals and 20-bit digital audio signals. Similarly, both digital and analog output signals are provided, for flexible support of mixed analog-digital systems.

Simple system configuration using the serial digital interface

The serial digital inputs to the SDI (Serial Digital Interface) connector provide for one video signal and four audio channels through a single BNC connector. When connected to other digital equipment, this makes setting up and transporting, for example on outside assignments, extremely straightforward.

High quality digital recording

This unit records both sound and vision on the tape in the Digital Betacam format (see the figure at the end of this page). Since all internal processing is digital, signal outputs are stable, and reproduction is very accurate.

Designed for field operations

The unit is compact and lightweight (main unit approximately 6.6 kg or 14 lb 8 oz), making it ideal for carrying and operating in the field. The power consumption while recording is about 26 W (with the MODE switch in the SAVE position and the CONFI switch in the OFF position), and the optional battery pack provides about two hours of continuous recording.

color playback signal is available at 24 times normal speed, making tape cuing both fast and accurate.

Two LCD units for ease of operation

The front panel includes two LCDs: the smaller shows the unit status and time indications, and the larger displays the audio level meters, the video level meters, or the setup menu. By switching the display mode, it is possible to change the audio level indications for fine adjustment in a narrower range. Backlighting is provided to make the displays easier to read in gloomy conditions.

1-1-2 Digital Betacam Format

Overview

The Digital Betacam format is based on the conventional Betacam and Betacam SP formats, and allows high-performance digital recording and playback. One of the features of the Digital Betacam format is the introduction of a new technique known as “coefficient recording,” which allows the data rate of the video signal to be reduced to approximately half. This makes 120 minutes or more of recording possible with an “L” size cassette. The compressed video signal includes error-correcting codes (ECC), which correct the signal on playback. This powerful error-correcting system provides the improved signal reliability which is another feature of the Digital Betacam format.

Recording format

The processing of the Digital Betacam video signal conforms to the D1 4:2:2 component digital format, with digitization according to ITU-R BT. 601. The following figure shows schematically the Digital Betacam recording format on the tape. A set of six diagonal tracks contains one field of video and four channels of audio information.

Tape transport direction

Direction of head movement

Cue track

Video sectors

Audio sectors (1–4)

Video sectors

Chapter 1 Overview

High speed search with color picture

The search speed can be set to 2 times, 5 times or 8 times normal speed. Using rewind or fast forward, a

Time code track

Control track

Tape recording format for Digital Betacam

Chapter 1 Overview 1-1

1-2 System Configuration

The following figure shows the configuration of a typical system centered on the DVW-250/250P.

Chapter 1 Overview

For details, such as the connector names, see Section 4-1-1 “Connecting Digital Equipment” (page 4-1) and Section 41-2 “Connecting Analog Equipment” (page 4-2).

Switching

Digital equipment

Color video camera

VTR etc.

Single video/audio input channel

Single video/audio output channel

VTR etc.

Earphone Headphones

DVW-250/250P

Microphone

Tape recorder, etc.

Four audio input channels (1 to 4)

Four audio output channels

Analog equipment

Color video camera

VTR etc.

Composite signal

Single video/audio input channel

Two video output channels (composite)

Component signal

Switching

1-2 Chapter 1 Overview

Control signal channel

BVR-3 Remote Controller or

Editor etc.

Typical DVW-250/250P system configuration

Video monitor

Stereo amplifier Speakers

VTR, FPU (Field Pickup Unit), etc.

1-3 Getting the Best Performance from the Unit

Notes on operation and storage

Protect the unit from violent shocks

It is possible to damage the internal circuitry and mechanism or spoil the external finish.

After use

Turn the power switch off.

When not using the unit for a long period

Remove the cassette and batteries.

Operating and storage locations

Store the unit in a level place which is well ventilated. Avoid operation or storage in the following locations:

•In extremely hot or extremely cold conditions

•In extremely dusty conditions

•In very high humidity

•Where the unit will be subjected to severe vibration

•Close to strong magnetic fields

•Exposed to direct sunlight for long periods, or close to heating equipment

Cleaning the video heads

Use the Sony BCT-5CLN or BCT-D12CL Cleaning Cassette for cleaning the audio and video heads. Follow the instructions with the cleaning cassette.

Related manuals

In addition to this Operation Manual, the following manuals are available. These should be consulted as necessary.

•Maintenance Manual Part 1 (supplied) Describes the maintenance of this unit.

•Maintenance Manual Part 2 (option) Contains circuit diagrams and adjustment procedures required for the maintenance of this unit.

Chapter 1 Overview

Condensation

If you move the unit suddenly from a cold place to a warm place, or use it in a very humid location, condensation may form on the head drum. If the unit is operated in this state, the tape may adhere to the drum, and cause a failure or even permanent damage. Take the following steps to prevent this from happening:

•Remove the cassette before operating the unit in conditions where condensation is likely to form.

•If the HUMID indication is showing, condensation is present: wait until the HUMID indication disappears, and then insert a cassette.

•Do not load a cassette on which condensation has formed into the unit.

Chapter 1 Overview 1-3

2-1 Front Panel

The front panel is divided into four sections as follows:

• Operating controls

• Status indications

• Adjustment controls

• Time code setting controls

Of these, the controls for time code settings are normally covered by a hinged lid.

Operating controls

Status indications

Chapter 2 Location and Function of Parts

Open the lid.

Time code setting controls

Adjustment controls

Front panel

Chapter 2 Location and Function of Parts 2-1

2-1 Front Panel

2-1-1 Operating Controls

Chapter 2 Location and Function of Parts

1 EJECT button and indicator 2 STOP button 3 PLAY button and indicator 4 REC button and indicator

5 Cassette compartment

6 REW button and indicator 7 F FWD button and indicator 8 SEARCH button and indicator 9 CUE DUB button and indicator 0 PAUSE button and indicator !¡ KEY INHI switch

Operating controls

1 EJECT 6 button and indicator

Press this button to eject the cassette. The indicator lights while the cassette is being ejected.

2 STOPp button

Press this button to stop the tape transport.

(

3 PLAY

button and indicator

Press this button to play back the tape. To start recording, press this button and the REC button simultaneously. For audio dubbing, press this button and the CUE DUB button simultaneously. The indicator lights during playback, recording, or audio dubbing.

4 RECr (record) button and indicator

To start recording, press this button and the PLAY button simultaneously. The indicator flashes during recording. By pressing this button alone while the tape transport is stopped, or during fast forward, rewind or playback,

it is possible to monitor an E-E signal

Pressing this button alone while no cassette is loaded

switches the unit to E-E mode

Consecutive recording

When making consecutive recordings, using the PAUSE button to stop recording ensures that successive takes are joined without picture breakup. If you press the STOP button to stop recording, then restart by holding down the REC button then pressing the PLAY button, the later recording will overlap the previous one by a few frames, but there will again be no picture breakup. On the other hand, if you hold

..........................................................................................................................................................................................................

1) E-E signal

Abbreviation of “Electric-to-Electric signal,” meaning that the signal passes through internal electric circuits, but not through magnetic conversion circuits such as heads and tapes.

2) E-E mode

Abbreviation of “Electric-to-Electric mode,” meaning the state of the unit in which it is possible to monitor an E-E signal. This mode is used for confirming input signals before recording.

2-2 Chapter 2 Location and Function of Parts

down the PLAY button then press the REC button, recording starts immediately, but there may be picture breakup. However, once a cassette has been removed and reinserted, even pressing the REC button then the PLAY button may sometimes not result in a proper join.

5 Cassette compartment

Raise the lid in the direction indicated (¢) and insert the cassette.

6 REW0 (rewind) button and indicator

Press this button to rewind the tape. Pressing this button after pressing the SEARCH button starts a search of the tape in the reverse direction at a maximum 8 times normal speed (selectable from 2 times, 5 times and 8 times). The indicator lights during the rewind operation, and goes off when it is completed.

7 F FWD) (fast forward) button and indicator

Press this button to fast forward the tape. Pressing this button after pressing the SEARCH button starts a search of the tape in the forward direction at a maximum 8 times normal speed (selectable from 2 times, 5 times and 8 times). The indicator lights during the fast forward operation, and goes off when it is completed.

9 CUE DUB button and indicator

Hold this button down, then press the PLAY button to record analog sound on the cue track of the tape (see page 1-1). This records the channel 4 audio. Pressing this button alone allows the channel 4 audio to be monitored in E-E mode. The indicator flashes during recording, and lights continuously during monitoring.

0 PAUSEP button and indicator

Press this button to pause the tape movement during recording or playback. While paused, the indicator flashes. Pressing the button again turns the indicator off, and ends the paused state.

!¡ KEY INHI (inhibit) switch

When this switch is in the ON position, all operation buttons are disabled, thus preventing a possible inadvertent operation. To release this lock, return the switch to the OFF position.

Note

When the KEY INHI switch is in the OFF position, only the STOP button and PAUSE button operate during recording, but at all other times, all buttons operate.

Chapter 2 Location and Function of Parts

8 SEARCH button and indicator

Press this button to play back at high speed. After pressing this button, press the F FWD button to play back in the forward direction or the REW button to play back in the reverse direction. The speed can be 2 times, 5 times or 8 times normal speed, and this is selectable by a setup operation. The indicator lights during the search operation. Pressing the button again turns the indicator off, and ends the search function.

Chapter 2 Location and Function of Parts 2-3

2-1 Front Panel

2-1-2 Status Indications

Chapter 2 Location and Function of Parts

1 Status indication panel 2 WARNING indicator 3 RESET button 4 DISPLAY switch

Status indications

1 Status indication panel

This displays warnings, the tape remaining, the battery capacity remaining, the operating status, and time indications.

remaining

Warning indications

RF SERVO HUMID SLACK PB VITC NDF EXT-LK 2FLD

TAPE BATT E F

Battery capacity remaining

Status indication panel

Operating status indications

H MIN SEC FRM

Time indicationsTape

The details of these indications are as follows:

Warning indications

The following indications appear in the event of a fault in the unit:

RF: Recording or playback is not possible because

the video heads are clogged, or there is a fault in the circuit.

SERVO: The drum servo or capstan servo lock is

lost.

HUMID: There is condensation on the head drum.

Alternatively, the humidity is high.

SLACK: The tape winding is not correct.

For more details, see the section “Warning Indications” (page A-1).

Operating status indications

These show the operating status of the unit, as follows:

DIAG: in diagnosis mode PB: when the playback time code is displayed. VITC: when the time code displayed is the VITC

(Vertical Interval Time Code)

NDF: in non-drop frame mode (DVW-250 only) (see

the footnotes on page 4-9)

EXT-LK: when the time code on this unit is locked

to the time code on an external unit

2FLD: when the internal time code generator is not

color frame locked

1) Color frame lock

This forces the time code frame number to be even for the first and second color fields and odd for the third and fourth color fields. When there is color frame

information in the input video signal and the time code is not locked to an external time code, then in the F-RUN mode the color frame lock is automatically applied.

2-4 Chapter 2 Location and Function of Parts

Time indications

This display shows the value selected by the DISPLAY switch from CTL (control track running time), time code, or user bits. However, if the REAL TIME record/set switch (see page 2-9) in the time code setting controls is in the SET position, the real time appears here, regardless of the DISPLAY switch setting.

Tape remaining indication

This shows the length of the remaining tape. Each segment corresponds to 5 minutes of remaining tape, but if 30 minutes of tape or more remains, all seven segments show.

For details of the segment indications and remaining tape times, see Section 3-2-4 “Checking the Remaining Tape (page 3-7).

When the remaining tape time is approximately two minutes, the leftmost segment and the “TAPE” indication flash, and simultaneously the WARNING indicator flashes, accompanied by an intermittent warning tone. At the end of the tape, the WARNING indicator stays on, and the warning tone becomes continuous.

Battery capacity remaining indication

This shows the remaining battery capacity. When the battery pack is fully charged, all seven segments show. As the battery capacity decreases, the segments disappear in turn from the right.

For details of the segment indications and remaining battery capacity, see Section 3-1-4 “Checking the Remaining Battery Capacity (page 3-4).

3 RESET button

This resets the time display. When the CTL value (control track running time) is displayed, it is reset to “0:00:00:00”. When one of the time code, or user bit value or real time is displayed, it is reset to “00:00:00:00”.

4 DISPLAY switch

This selects the time value displayed.

CTL: Displays the tape running time in hours,

minutes, seconds and frames.

TC: Displays a time code. U-BIT: Displays the user bits.

Note that when the user bits are displayed, no

colons appear. However, the value displayed is not totally determined by the setting of the DISPLAY switch. The REAL TIME record/set switch (see page 2-9) takes precedence, followed by the F-RUN/R-RUN switch (see page 2-9), and finally the DISPLAY switch setting.

Switch settings and time value displayed

REAL TIME record/set switch position

SET Ignored Ignored Real time REC ON or

OFF

F-RUN/ R-RUN switch position

SET TC or CTL Time code

F-RUN or RRUN

DISPLAY switch position

U-BIT User bits CTL CTL TC Time code U-BIT User bits

Value displayed

Chapter 2 Location and Function of Parts

When the battery pack is almost exhausted, the leftmost segment and the “BATT” and “E” indications flash, and simultaneously the WARNING indicator flashes, accompanied by an intermittent warning tone. When the battery pack is completely exhausted, the WARNING indicator stays on, and the warning tone becomes continuous.

2 WARNING indicator

This lights or flashes when the battery pack is nearly exhausted, there is less than two minutes of tape left, or there is a fault in the unit.

For more details, see the section “Warning Indications” (page A-1).

Chapter 2 Location and Function of Parts 2-5

2-1 Front Panel

2-1-3 Adjustment Controls

Chapter 2 Location and Function of Parts

1 Signal level and menu display 2 Recording level control knobs and

UNI/VAR switches

3 LIGHT switch 4 Display operating buttons 5 AUDIO PB LEVEL control knobs 6 POWER switch

Adjustment controls

1 Signal level and menu display

Pressing the DISPLAY button in the display operating buttons cycles this display through the audio level meters, video level meters, and setup menus. When the unit is powered on, and whenever five minutes elapse without an operation, the display reverts to the audio level meters. When the display is showing the audio level meters, the indication “CH CONDI” (channel condition) appears. One of the three segments above it appears, to indicate the status of the playback signal.

Top segment: The playback signal is normal. Middle segment: The playback signal is somewhat

degraded, but adequate.

Bottom segment: The playback signal is degraded.

If this segment appears continuously, head cleaning or an internal servicing is required.

OVER OVER OVEROVER EMPH

FINE

-10 +1

-20

-1-2

-30

-40

-60

FULL FINE CH-1 CH-2 CH-3 CH-4 CH

CONDI

display of the channel condition

2 Recording level control knobs and UNI/VAR (unity/variable) switches

When the audio inputs are analog, these knobs can be used to adjust the recording level on each of the four channels, while watching the audio level meters. Below and to the left of each knob is a UNI/VAR (unity/variable) switch, and the position of this switch affects the recording level as follows:

UNI: The input signal is recorded without changing

its level, regardless of the position of the control knob.

VAR: The position of the control knob determines

the recording level.

2-6 Chapter 2 Location and Function of Parts

3 LIGHT switch

This switches on and off the illumination of the status indication panel (see page 2-4) and signal level and menu display, and also controls the brightness of the indicators for the operating buttons.

ON: Turns the display illumination on. OFF: Turns the display illumination off. BRT: Turns the display illumination off, and

increases the brightness of the indicators. This makes the indicators easier to see outdoors, for example.

4 Display operating buttons

There are four buttons, and their functions depend on the current state of the signal level and menu display, as shown in the following table.

Functions of display operating buttons

Display

state Operating button

DISPLAY Switch to

UP —

FREEZE/DOWN Freeze

FINE/SET Toggle

Audio level meters

video level meters

(No function)

playback frame or end freeze

display mode (FULL/ FINE)

Video level meters

Switch to setup menu

— (No function)

Setup menu

Switch to audio level meters

Move cursor (*) up

Move cursor (*) down

Select item indicated by cursor (*)

5 AUDIO PB (playback) LEVEL control knobs

These adjust the playback levels for each separate channel of analog audio output.

6 POWER switch

This powers the unit on and off. This switch also controls the power supply to a camera connected to the CAMERA connector on the connector panel (see page 2-13), a remote controller connected to the DC OUT connector (see page 2-15), and an RF modulator connected to the RFU OUT connectors (see page 2-15). Note that the time code circuits continue to operate when the unit is powered off.

Chapter 2 Location and Function of Parts

Chapter 2 Location and Function of Parts 2-7

2-1 Front Panel

2-1-4 Time Code Setting Controls

Chapter 2 Location and Function of Parts

Pull the projecting lug forward.

1 VITC switches 2 VITC REC switch 3 DISPLAY switch 4 F-RUN/R-RUN switch 5 ADVANCE button 6 SHIFT button

REC DISPLAY

ON LTC

A VITC

7 REAL TIME record/set switch 8 REAL TIME insertion time code selection switch 9 EXT-LOCK/U-BIT switch 0 DF/NDF switch (DVW-250 only) !¡ DIAG switch

B OFF VITC

F-RUN ADVANCE SHIFT REAL TIME

R-RUN

Time code setting controls

1 VITC switches

These determine the lines in the vertical blanking

interval in which the VITC

is recorded. For the DVW-250, the factory default is for switch A to be in position 6 (line 16) and switch B in position 8 (line 18). For the DVW-250P, the factory default is for switch A to be in position C (line 19) and switch B in position E (line 21).

EXT-LOCK/U-BIT

DFONLTC U-BIT

SET

REC

OFF SET

VITC U-BITOFF NDF

2 VITC REC (record) switch

This selects whether or not to record the VITC.

ON: Record the VITC. OFF: Do not record the VITC.

DIAG

For details of the relation between the switch positions and the line numbers, see page 4-10.

1) VITC (Vertical Interval Time Code)

This time code signal is inserted in two lines of the

vertical blanking interval. This allows the time code to be read even at very slow playback speeds.

2-8 Chapter 2 Location and Function of Parts

3 DISPLAY switch

This selects which time code is displayed in the status indication panel (see page 2-4). This switch is only effective when the DISPLAY switch by the status indication panel (see page 2-5) is set to the TC or UBIT position.

LTC: Display the LTC (Longitudinal Time Code). VITC: Display the VITC.

4 F-RUN/R-RUN (free-run/record-run) switch

This selects the operating mode of the internal time code generator.

F-RUN: The time code generator keeps running,

regardless of the operating state of the unit. Use this position when setting the time code to real time or synchronizing it to an external time code.

SET: Move the switch to this position when setting

the time code or user bits value.

R-RUN: The time code generator runs only while

recording. This produces a tape with consecutive time code values, even when shot intermittently.

5 ADVANCE button

When setting the time code or user bits value, pressing this button increments the digit which is flashing. This button is effective only when the F-RUN/RRUN switch or REAL TIME record/set switch is in the SET position.

9 EXT-LOCK/U-BIT switch

This selects whether or not to lock the user bit data to external user bit data.

ON: The user bit value is locked to the user bit value

inserted in the external time code.

OFF: The user bit value set on this unit is used.

0 DF/NDF switch (DVW-250 only)

This selects whether to use drop frame mode or nondrop frame mode.

For an explanation of the significance of these modes, see the footnotes on page 4-9.

DF: drop frame mode NDF: non-drop frame mode

!¡ DIAG (diagnosis) switch

Press this switch to carry out diagnosis on the unit.

For details, refer to the supplied Maintenance Manual Part

Chapter 2 Location and Function of Parts

6 SHIFT button

When setting the time code or user bits value, pressing this button cycles through the digits, flashing the one which can be changed. This button is effective only when the F-RUN/R-RUN switch or REAL TIME record/set switch is in the SET position.

7 REAL TIME record/set switch

This selects whether or not to record the real time as user bit data. It is also used for setting the real time.

REC ON: Record the real time as user bit data. OFF: Do not record the real time as user bit data. SET: Set the real time.

8 REAL TIME insertion time code selection switch

This selects whether to insert the real time as user bit data in the LTC or VITC.

LTC U-BIT: Insert the user bit value in the LTC. VITC U-BIT: Insert the user bit value in the VITC.

Chapter 2 Location and Function of Parts 2-9

2-2 Connector Panel

This section describes the connector panel under the following three headings:

• Audio connectors and controls

• Video connectors and controls

• Power supply and miscellaneous

Chapter 2 Location and Function of Parts

Audio connectors and controls

Video connectors and controls

2-10 Chapter 2 Location and Function of Parts

Power supply and miscellaneous

Connector panel

2-2-1 Audio Connectors and Controls

1 CONFI switch 2 CUE REC switch 3 CH-3/4 OUT switch 4 MONITOR SELECT switches 5 PHONE LEVEL control knob

6 +48 V switches (DVW-250P only) 7 CAMERA/LINE switches 8 Audio input level switches

9 AUDIO IN connectors 0 AUDIO OUT connectors !¡ EARPHONE jack !™ HEADPHONES jack

Chapter 2 Location and Function of Parts

Audio connectors and controls

1 CONFI (confidence) switch

This selects the mode for monitoring during recording. Note that this switch applies to both video and audio.

ON: Monitor the simultaneous playback of the

recorded signals from the confidence heads.

ECC (Error Correcting Codes): Monitor the input

signals unchanged (in E-E mode). If a serious error is detected while recording the signals, a warning indication is given.

OFF: Monitor the input signals unchanged (in E-E

mode). The RF envelope is monitored during recording, and if a fault occurs a warning

indication is given. The ON setting results in the highest power consumption, and the OFF setting the lowest. When using the unit with a battery pack, set the CONFI switch to the ECC or OFF position.

2 CUE REC (record) switch

It is possible to mix the analog audio input signals and record them on the analog cue track on the tape. This switch determines whether or not to record on the cue track during normal recording. When this switch is in the ON position, channels 1 to 4 of the analog audio input are mixed and recorded on the cue track. When using the CUE DUB button on the front panel (see page 2-3) for cue dubbing, the audio signal is

recorded on the cue track regardless of the position of this switch.

3 CH-3/4 (channels 3 and 4) OUT switch

This selects the output from channels 3 and 4 of the AUDIO OUT connectors.

MON: the signals selected by the MONITOR

SELECT switches

LINE: the signals of audio channels 3 and 4

4 MONITOR SELECT switches

These select the audio signals which can be monitored using the EARPHONE jack, HEADPHONES jack, and RFU OUT connector. When the CH-3/4 OUT switch is in the MON position, these switches also select the audio output from channels 3 and 4 of the AUDIO OUT connectors.

CUE: the audio from the cue track DA: Use the channels selected by the switch to the

right.

1/2: audio channels 1 and 2 3/4: audio channels 3 and 4 MIX: A mix of those of the four channels for

which the corresponding switches below are in the ON position.

Chapter 2 Location and Function of Parts 2-11

2-2 Connector Panel

5 PHONE LEVEL control knob

This adjusts the level of audio output to the EARPHONE and HEADPHONES jacks.

6 +48 V switches (DVW-250P only)

For each of the four channels, these turn on or off the

Chapter 2 Location and Function of Parts

48 V microphone phantom power supply to the corresponding AUDIO IN connector. These switches are only effective when the following selections are made:

CAMERA/LINE switch: CAMERA position Audio input level switch: –60 dB position

7 CAMERA/LINE switches

For each of the four audio channels, these select the input.

CAMERA: the audio input to the CAMERA

connector (see next page)

LINE: the audio input to the corresponding AUDIO

IN connector

8 Audio input level switches

For each of the four channels, these select the audio input level. There are three settings: –60, –20 and +4 dBu.

9 AUDIO IN connectors (XLR 3-pin)

These input up to four analog audio signals from external microphones or other equipment.

0 AUDIO OUT connectors

These output analog audio signals for the four channels to external equipment.

!¡ EARPHONE jack (stereo minijack)

Connect an earphone or stereo headphones equipped with a stereo miniplug. The MONITOR SELECT switches determine the audio output. When the WARNING indicator (see page 2-5) lights or flashes, a warning sound is sent to the earphone.

!™ HEADPHONES jack (stereo standard jack)

Connect stereo headphones with an impedance of 8 ohms. The MONITOR SELECT switches determine the audio output. When the WARNING indicator (see page 2-5) lights or flashes, a warning sound is sent to the headphones.

2-12 Chapter 2 Location and Function of Parts

2-2-2 Video Connectors and Controls

1 COLOR FRAME switch 2 CONFI switch 3 SDI OUT connector 4 CAMERA connector 5 VIDEO LEVEL control

Chapter 2 Location and Function of Parts

6 TC OUT connector 7 TC IN connector 8 SUPERIMPOSE switch 9 VIDEO OUT 1 and 2 connectors 0 SDI IN connector !¡ Video input selector switch !™ VIDEO IN connector

Video connectors and controls

1 COLOR FRAME switch

This selects whether or not to enable color framing during editing or playback.

ON: Enable color framing. Playback is always in

units of four (NTSC) or eight (PAL) fields.

OFF: Disable color framing. Playback is in units of

two fields.

2 CONFI (confidence) switch

This selects the mode for monitoring during recording. Note that this switch applies to both video and audio.

ON: Monitor the simultaneously playback of the

recorded signals from the confidence heads.

ECC (Error Correcting Codes): Monitor the input

signals unchanged (in E-E mode). If a serious

error is detected while recording the signals, a

warning indication is given.

OFF: Monitor the input signals unchanged (in E-E

mode). The RF envelope is monitored during

recording, and if a fault occurs a warning

indication is given. The ON setting results in the highest power consumption, and the OFF setting the lowest. When using the unit with a battery pack, set the CONFI switch to the ECC or OFF position.

3 SDI (Serial Digital Interface) OUT connector (BNC)

This outputs serial digital video and audio signals in D1 format. It is possible to switch this output on or off using item “SDI OUT” in the <VIDEO 2> menu (see page 6-3).

4 CAMERA connector (26-pin)

Connect this to the multi-pin connector on the camera. This interface carries video, audio and control signals between the camera and the unit, and also supplies power to the camera. When the video input selector switch is in the CAMERA position, the signals supplied to this connector form the video input to the unit. When item “CAMERA” in the <VIDEO 1> menu is set to “AUTO” (see page 6-3), it is possible to input either analog component video signals or D1 format serial digital video and audio signals, depending on the type of camera connected.

Note

When using other than a Sony camera, do not use the “AUTO” setting: select “ANA” or “DIGI” as required.

Chapter 2 Location and Function of Parts 2-13

2-2 Connector Panel

5 VIDEO LEVEL control

If the composite signal input level to the VIDEO IN connector is not a 1 Vp-p signal, use a screwdriver to turn this control and adjust the input level. The range of adjustment is ±3 dB. Normally leave this control at the center detent position.

Chapter 2 Location and Function of Parts

It is not possible to adjust the input level for component signals or serial digital video and audio signals.

6 TC (time code) OUT connector (BNC)

Connect to the time code input connector of an external device such as a time code reader or VTR. The time code output depends on the operating state of the unit, as follows:

Playback: playback time code Recording: time code generated by the built-in time

code generator. When the time code on this unit

is locked to an external time code, the external

time code is output.

7 TC (time code) IN connector

Connect to the time code output connector of an external device such as a time code generator or VTR. Use this when locking the built-in time code generator to the external time code.

8 SUPERIMPOSE switch

This selects whether or not to superimpose information about the state of the unit (PLAY, FF, etc.) and time code values on the composite video signal output from the VIDEO OUT 2 connector.

ON: Superimpose information. OFF: Do not superimpose information.

9 VIDEO OUT 1 and 2 connectors (BNC)

These connectors provide analog composite video outputs. When the SUPERIMPOSE switch is in the ON position, information about the state of the unit and time code values are superimposed on the signal output from the VIDEO OUT 2 connector.

0 SDI IN connector

Input serial digital video and audio signals in D1 format. When the video input selector switch is in the SDI IN position, the signals supplied to this connector form the video input to the unit.

!¡ Video input selector switch

The position of this switch determines the video input to the unit.

VIDEO IN: composite video signal input to the

VIDEO IN connector

CAMERA: component video signal or serial digital

video signal input to the CAMERA connector

SDI IN: serial digital video signal input to the SDI

IN connector The playback signal from this unit is synchronized to the signal selected by this switch.

!™ VIDEO IN connector (BNC)

Input an analog composite video signal. When the video input selector switch is in the VIDEO IN position, the signals supplied to this connector form the video input to the unit.

2-14 Chapter 2 Location and Function of Parts

+ 50 hidden pages