Sony DVW-250 User manual

MAINTENANCE MANUAL Part 1
1st Edition (Revised 2)
Serial No. 10001 and Higher
DVW-250/250P
DIGITAL VIDEOCASSETTE RECORDER

!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, 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.
!WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen.Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
!AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.
CAUTION
Danger of explosion if battery is incorrectly
replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according to the
manufacturer’s instructions.
Vorsicht!
Explosionsgefahr bei unsachgemäßem
Austausch der Batterie.
Ersatz nur durch denselben oder einen vom
Hersteller empfohlenen ähnlichen Typ.
Entsorgung gebrauchter Batterien nach Angaben
des Herstellers.
ATTENTION
Il y a danger d’explosion s’il y a remplacement
incorrect de la batterie.
Remplacer uniquement avec une batterie du
même type ou d’un type équivalent recommandé
par le constructeur.
Mettre au rebut les batteries usagées
conformément aux instructions du fabricant.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig
håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.

1
DVW-250/250P
Table of Contents
Manual Structure
Purpose of this manual .............................................................................................. 7
Contents ..................................................................................................................... 7
Relative manual ......................................................................................................... 8
1. Service Overview
1-1. Operating Conditions ..................................................................................1-1
1-2. Locations of Main Part and Functions of Printed Circuit Board ................1-2
1-2-1. Functions of Printed Circuit Board and
Printed Circuit Board Location ..................................................1-2
1-2-2. Main Mechanical Part Locations ...............................................1-5
1-2-3. Function and Location of Sensors..............................................1-6
1-3. Matching Connectors ..................................................................................1-8
1-4. Signal Input/Output.....................................................................................1-9
1-5. Removal/Installation of Cabinet ...............................................................1-12
1-6. Cassette Compartment Removal/Installation............................................1-14
1-7. Connector Panel Removal/Installation......................................................1-14
1-8. Battery Terminal Replacement .................................................................1-15
1-9. Fuse Replacement .....................................................................................1-15
1-10. Switch/Slit Land Settings on the Boards...................................................1-16
1-10-1. CP-260 board ...........................................................................1-16
1-10-2. ADA-44 board..........................................................................1-18
1-10-3. DIF-31 board ............................................................................1-19
1-10-4. DPR-62 board...........................................................................1-20
1-10-5. EQ-54 board .............................................................................1-21
1-10-6. SST-3 board .............................................................................1-22
1-10-7. VPR-12 board...........................................................................1-23
1-11. Ejecting the Cassette Tape Manually ........................................................1-24
1-12. Cleaning when the Heads are Clogged .....................................................1-25
1-13. Tracking/Audio Meter Adjustment ...........................................................1-25
1-13-1. Tracking Adjustment................................................................1-25
1-13-2. Audio Meter Contrast Adjustment ...........................................1-25
1-14. Optional Accessories.................................................................................1-25
1-14-1. Optional Accessories................................................................1-25
1-14-2. Fixture ......................................................................................1-26
1-14-3. Measuring Equipment ..............................................................1-29
2. Error Messages
2-1. Error Message .............................................................................................2-1

2DVW-250/250P
3. Maintenance Mode
3-1. Setup Menu .................................................................................................3-1
3-2. DIAG Menu ................................................................................................3-5
3-3. ISR.............................................................................................................3-12
4. Block Diagrams and Circuit Description
5. Periodic Maintenance and Inspection
5-1. Cleaning ......................................................................................................5-1
5-1-1. General Information for Cleaning ..............................................5-1
5-1-2. Cleaning of Tape Running Surface of Upper Drum
and Video Heads ........................................................................5-2
5-1-3. Cleaning of Tape Running Surface of Lower Drum
and Lead Surface ........................................................................5-3
5-1-4. Stationary Heads Cleaning .........................................................5-4
5-1-5. Cleaning of Tape Running System and Tape Cleaner ...............5-5
5-2. Periodic Check ............................................................................................5-6
5-2-1. Hours Meter ...............................................................................5-6
5-2-2. Periodic Check List ....................................................................5-6
DVW-250/250P Periodic Replacement List ..............................5-7
5-3. Cares after Using at Special Environment ..................................................5-8
6. Replacement of Mechanical Parts
6-1. General Information for Mechanical Part Replacement .............................6-1
6-1-1. Caution .......................................................................................6-1
6-1-2. Threading End/ Unthreading End Mode ....................................6-2
6-1-3. Parts Location of Periodical Replacement Parts ........................6-4
6-1-4. Other Cautions ...........................................................................6-5
6-1-5. Reel Table Position ....................................................................6-7
6-2. Brush Replacement .....................................................................................6-9
6-3. Slip Ring Assembly Replacement.............................................................6-12
6-4. Upper Drum Assembly Replacement........................................................6-14
6-5. Drum Assembly Replacement...................................................................6-21
6-6. Driving Belt Replacement .........................................................................6-27
6-7. Pinch Roller Arm Assembly Replacement ...............................................6-29
6-8. Video Head Cleaning Roller Replacement ...............................................6-31
6-9. Cue Brush Replacement ............................................................................6-34
6-10. Pinch Solenoid Assembly Replacement....................................................6-35
6-11. Tension Regulator Roller Replacement ....................................................6-37
6-12. S Reel Brake Solenoid Replacement.........................................................6-41

3
DVW-250/250P
6-13. T Reel Brake Solenoid Replacement ........................................................6-45
6-14. Video Head Cleaner Solenoid Replacement .............................................6-53
6-15. Capstan Motor Replacement .....................................................................6-55
6-16. CTL Head Replacement............................................................................6-58
6-17. CUE/TC Head Replacement .....................................................................6-62
6-18. Threading Motor Replacement .................................................................6-68
6-19. Battery Replacement .................................................................................6-72
6-20. Cassette Compartment Harness Replacement...........................................6-74
6-21. S Reel Motor Assembly Replacement ......................................................6-76
6-22. T Reel Motor Assembly Replacement ......................................................6-80
6-23. S Arm Assembly Replacement .................................................................6-87
6-24. T Link and T Drawing Arm Replacement ................................................6-91
6-25. Replacement of the Component of the Threading Link Block .................6-95
7. Tape Path Alignment
7-1. General Information for Tape Path Adjustment..........................................7-1
7-1-1. Tape Path Adjustment Flow.......................................................7-1
7-1-2. Locations of Tape Running System ...........................................7-2
7-1-3. Notes ..........................................................................................7-3
7-1-4. Preparations................................................................................7-4
7-1-5. Tools...........................................................................................7-4
7-2. Tape Path Adjustment .................................................................................7-5
7-2-1. S3/S5 Tape Guides Height Adjustment .....................................7-5
7-2-2. CTL Head Height Adjustment ...................................................7-9
7-2-3. CTL Head Position Adjustment ...............................................7-11
7-2-4. DIP Switch Setting ...................................................................7-13
7-2-5. S1 Guide Slantness Adjustment ...............................................7-14
7-2-6. S2 Guide Height Adjustment ...................................................7-16
7-2-7. S Side Tape Running Check ....................................................7-18
7-2-8. T1 Guide Slantness Adjustment...............................................7-21
7-2-9. T2 Guide Height Adjustment ...................................................7-23
7-2-10. Alignment Tape Tracking Check .............................................7-25
7-2-11. T3 Guide Height Adjustment ...................................................7-27
7-2-12. CUE/TC Head Position Adjustment ........................................7-31
7-2-13. CUE/TC Head Height Adjustment...........................................7-33
7-2-14. CUE/TC Head Azimuth Adjustment .......................................7-35
7-2-15. Drum PG Phase Adjustment ....................................................7-37
7-2-16. CTL Head Position Check .......................................................7-39
7-2-17. DIP Switch Re-setting..............................................................7-41
7-2-18. Self REC/PB Tracking Check ..................................................7-42
7-2-19. Tape Running Check................................................................7-45
7-2-20. Locking Compound Applying..................................................7-50
7-3. Mechanical Alignment ..............................................................................7-51
7-3-1. Tension Regurator Adjustment ................................................7-51

4DVW-250/250P
8. Replacement of Circuit Boards
8-1. General Information for Boards Replacement ............................................8-1
8-2. Video Boards Assembly Replacement ........................................................8-1
8-2-1. Opening/Removal of Video Boards Assembly ..........................8-1
8-2-2. DIF-31 Board Removal ..............................................................8-3
8-2-3. VPR-12 Board Removal ............................................................8-4
8-2-4. DPR-62 Board Removal ............................................................8-4
8-3. SST-3 Board Removal ................................................................................8-5
8-4. KY-315 Board Removal .............................................................................8-6
8-5. ADA-44 Board Removal.............................................................................8-7
8-6. EQ-54 Board Replacement .........................................................................8-8
8-7. DC/DC Converter Removal ........................................................................8-8
9. Electrical Alignment
9-1. General Information for Electrical Adjustment ..........................................9-1
9-1-1. Notes for Adjustment .................................................................9-1
9-1-2. Equipment/Fixtures ....................................................................9-1
9-1-3. Initial settings for switches.........................................................9-2
9-1-4. Test Signals ................................................................................9-2
9-1-5. Adjustment after Replacement of Boards and/or Blocks ...........9-3
9-2. Power/Control System Adjustment .............................................................9-4
9-2-1. SST-3 Board Voltage Adjustment .............................................9-4
9-3. Servo System Adjustment ...........................................................................9-4
9-3-1. EEPROM Data Initialize ............................................................9-4
9-3-2. Click Position Correction of Tracking Volume .........................9-5
9-3-3. Capstan FG Duty Adjustment ....................................................9-5
9-3-4. Capstan Free Speed Adjustment ................................................9-6
9-3-5. Drum PG Phase Adjustment ......................................................9-6
9-3-6. Save the Servo Data ...................................................................9-7
9-4. Audio System Adjustment ..........................................................................9-8
9-4-1. PB Level/Distortion Adjustment ................................................9-8
9-4-2. INPUT Level Adjustment ..........................................................9-8
9-4-3. DC Offset Adjustment................................................................9-9
9-4-4. CUE ERASE Current Adjustment ...........................................9-10
9-4-5. CUE Channel PB Frequency Response Adjustment ................9-10
9-4-6. CUE Bias Adjustment ..............................................................9-11
9-4-7. CUE REC Level Adjustment ...................................................9-12
9-5. RF System Adjustment .............................................................................9-14
9-5-1. RF Parameter Initialize ............................................................9-16
9-5-2. Transversal Filter Adjustment ..................................................9-16
9-5-3. PLL Adjustment .......................................................................9-17
9-5-4. Phase Adjustment .....................................................................9-18
9-5-5. ADC V-ref Adjustment ............................................................9-18
9-5-6. ADC Sampling Phase Adjustment ...........................................9-19

5
DVW-250/250P
9-5-7. Equalizer (AMP) Adjustment ..................................................9-20
9-5-8. Recording Current Adjustment ................................................9-20
9-5-9. Equalizer (PHASE) Adjustment ..............................................9-21
9-5-10. REC CONFI Channel Condition Check ..................................9-21
9-5-11. Self REC/PB Channel Condition Check ..................................9-22
9-5-12. Alignment Tape Playback Channel Condition Check .............9-22
9-5-13. Save the Adjustment Data ........................................................9-22
9-5-14. Manual Adjustment ..................................................................9-23
9-5-15. Setting after RF Adjustment.....................................................9-24
9-6. Video System Adjustment-1 .....................................................................9-24
9-6-1. Frequency Adjustment .............................................................9-24
9-7. Video System Adjustment-2 .....................................................................9-25
9-7-1. Pedestal Level Adjustment.......................................................9-25
9-7-2. Composite Input Level Adjustment .........................................9-26
9-7-3. CAMERA RETURN VIDEO Level Adjustment ....................9-27
9-7-4. INPUT SYNC Level Adjustment.............................................9-27
10. Spare Parts
10-1. Notes on Spare Parts .................................................................................10-1
10-2. Exploded Views ........................................................................................10-2

DVW-250/250P 7
Purpose of this manual This manual is the maintenance manual of Digital Videocassette Recorder DVW-
250/250P.
This manual describes the maintenance information of this unit, and the information
on primary services such as the replacement of main blocks and circuit boards.
Contents The following is a summary of the sections for understanding the contents of this
manual.
Section 1 Service Overview
Explains the locations of main part, the functions of printed circuit board, the
removal and installation of cabinet, and the measures against trouble.
Section 2 Error Message
Explains the error messages.
Section 3 Maintenance Mode
Explains the maintenance mode of this unit.
Section 4 Overall Block Diagrams and Circuit Descriptions
Describes the overall block diagrams and the circuit descriptions.
Section 5 Periodic Maintenance and Inspection
Explains the cleaning procedures and periodic checks.
Section 6 Replacement of Mechanical Parts
Explains how to replace the parts that should replace periodically and how to adjust
them after the replacement.
Section 7 Tape Path Alignment
Explains the adjustment procedures of tape path system.
Section 8 Replacement of Circuit Boards
Explains how to replace the main boards.
Section 9 Electrical Alignment
Explains the general information for electrical adjustments and the electrical adjust-
ments of this unit.
Section 10 Spare Parts
Describes the exploded views for the unit and mounted/printed circuit boards list.
Manual Structure

DVW-250/250P
8
Relative manual Besides this “Maintenance Manual 1”, the following manuals are available for this
unit.
• Operation Manual (Supplied with this unit.)
This manual is necessary for application and operation of this unit.
• Maintenance Manual Part 2 (Not supplied with this unit.)
This manual describes the information items (adjustments, board layouts, sche-
matic diageams, detailed parts list, etc.) that premise the service based on parts.
If this manual is required, please contact to Sony’s service organization.

1-1
DVW-250/250P
Section 1
Service Overview
1-1. Operating Conditions
Operating temperature : 0 to 40°C
Humidity : 25 to 85% (Relative humidity)
Storage temperature : –20 to +60°C
Use under special environment (Measure for cold area)
The unit is guaranteed its operation under the temperature of 0 °C to 40 °C. When the unit is used
under 0 °C, cover-cloth against the cold is recommended to use.
c
In the following environments, if the unit is operated continuously in the carrying case it may become
hot.
In such cases avoid removing the unit from the carrying case, as this may result in burns or injury.
If necessary, attach the shoulder strap.
• In direct sunlight
• In a car on a hot sunny day
• Near heating appliances
Power voltage DC12+5.0 V
-1.0
Power consumption During recording : 39 W(CONFI ON, SDI OUT ON)
28 W(CONFI OFF, SDI OUT OFF)
During STOP mode : 3 W(SAVE mode)

1-2 DVW-250/250P
1-2. Locations of Main Part and Functions of Printed Circuit Board
1-2-1. Functions of Printed Circuit Board and Printed Circuit Board Location
System Board name Circuit function Location No.
VIDEO CC-66 Video Input/Output 9
AUDIO CP-260 Audio Input/Output, Panel Switches 7
ADA-44 Audio Signal Processor (AD/DA) 15
VR-194 Audio Rec Level Selector (Preset/Variable) 13
VR-206 Audio Rec Level Control 12
VR-205 Phone Level Control 11
DUS-339 Head Phone Connector 10
SERVO, KY-315 Panel Switches 14
SYSTEM CONTROL, CON-18 TC IN/OUT Connectors 6
TIMECODE SE-233 Sensor (Casette Coding) 1
DET-26 Sensor (Thread/Unthread) 8
DET-15 Cassette In Detector 3
TR-57 S-Tension Detector 2
POWER SUPPLY DC-85 DC Input Select Switch 4
FU-63 Fuse 5
2
1
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8
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6
5
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1-2. Locations of Main Part and Functions of Printed Circuit Board

1-3
DVW-250/250P
System Board name Circuit function Location No.
VIDEO VPR-12 Video Signal Processor (AD/DA) 24
AUDIO APR-20 Audio Signal Processor (Limiter) 16
DIGITAL PROCESS DPR-62 Digital Data Processor (Encode/Decode, Error Correction) 23
Ref CK Generator, Data Rate Converter
Rec Current Control, Rec Envelope Detector
DIF-31 4:2:2 Component Serial Digital Interface 22
RF & CUE EQ-54 RF Equalizer (PB EQ, PB Envelope Detector) 18
Cue Rec/PB
SERVO, SST-3 Servo & System Control, Timecode 25
SYSTEM CONTROL, Full Erase & Channel Erase Oscillator
TIMECODE
POWER SUPPLY PSW-31A DC-DC Converter 19
PSW-31B DC-DC Converter 20
PSW-31C DC-DC Converter 21
OTHERS MB-601 Mother Board 17
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1-2. Locations of Main Part and Functions of Printed Circuit Board

1-4 DVW-250/250P
System Board name Circuit function Loction No.
SERVO, CS-25 Cassette Up/Down Detector 27
SYSTEM CONTROL, TIMECODE CS-26 Cassette Up/Down Detector 26
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1-2. Locations of Main Part and Functions of Printed Circuit Board

1-5
DVW-250/250P
1-2-2. Main Mechanical Part Locations
Mechanical deck
1: Solenoid (S reel brake) 12: T reel motor
2: Solenoid (Head cleaner) 13: Capstan motor
3: Video head cleaning roller 14: Threading motor
4: Brush 15: T reel belt
5: Slip ring 16: Pinch roller arm
6: Drum 17: T reel table
7: Upper drum 18: S reel table
8: CUE brush 19: S reel belt
9: CUE/TC head 20: FE head
10: Solenoid (T reel brake) 21: S reel motor
11: Solenoid (Pinch) 22: CTL head
123 456789
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1-2. Locations of Main Part and Functions of Printed Circuit Board

1-6 DVW-250/250P
Cassette compartment
23: DC motor
1-2-3. Function and Location of Sensors
Mechanical deck
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6
5
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1-2. Locations of Main Part and Functions of Printed Circuit Board

1-7
DVW-250/250P
1: Threading FG sensor
The threading FG sensor detects the rotation speed of the threading motor.
The FG output signal of this detection sensor is input to the servo circuit to control the threading
speed so that the tape is not damaged during threading and unthreading.
2: Tape top sensor
This sensor detect the top of the tape, and in addition detects the tape end of the tape that runs in the
reverse direction.
3: Threading-end sensor
4: Unthreading-end sensor
These sensors detects whether S/T drawer guides and S/T sliders reach the threading-end or un-
threading-end position by rotation angle of the gear.
5: L casette sensor
This sensor detects whether the inserted cassette tape is an L size.
6: L cassette REC inhibit sensor
This is a REC inhibit plug detector switch for the digital large cassette.
7: Cleaning tape detect sensor
Using a tub on the back side of the cassette tape, this sensor detects whether a cleaning tape is being
inserted into the unit.
8: Tape thickness sensor
Using a tub on the back side of the cassette tape, this sensor detects the thickness of the tape wound
on a cassette tape that is being inserted into the unit.
9: Metal/oxide tape sensor
Using a tub on the back side of the cassette tape, this sensor detects whether an oxide tape or metal
tape is being inserted into the unit. (Only during analog tape playback)
10: Analog/digital tape sensor
Using a tub on the back side of the cassette tape, this sensor detects whether an analog tape or digital
tape is being inserted into the unit.
11: Reel hub diameter sensor
The reel hub diameter of a cassette tape varies depending on the length of the tape wound on the
cassette tape. The reel hub diameter sensor detects the reel hub diameter using a tub on the back side
of the cassette tape. The output signal of this sensor is input to the servo circuit to control the
rotation speed and torque of the reel motor.
12: Condensation sensor
This sensor detects whether the dew condensation occurs in the unit.
13: S cassette REC inhibit sensor
This is a REC inhibit plug detection switch for the digital small cassette.
14: Tape end sensor
This sensor detects the end of the tape that runs in the forward direction.
15: S tension regulator arm sensor
During recording and playback, this sensor detects the tension arm position and controls the reel
torque to keep a constant S tape tension.
1-2. Locations of Main Part and Functions of Printed Circuit Board

1-8 DVW-250/250P
Cassette compartment
16: Cassette-in sensor
This sensor detects whether a cassette is being inserted.
17: Cassette-up sensor
18: Cassette-down sensor
The cassette-down sensor detects the movement of the cassette compartment through combined ON/
OFF operation of the cassette-down sensor, cassette-up sensor, and cassette-in sensor.
1-3. Matching Connectors
When external cables are connected to the connector on the connector panel during maintenance, the
hardware listed below (or the equivalents) must be used.
Panel indication Matching cable connector/cable
Connector Sony part No.
VIDEO IN BNC 1-560-069-11
SDI IN, SDI OUT
VIDEO OUT 1, VIDEO OUT 2
TC IN, TC OUT
AUDIO IN CH-1 to CH-4 XLR 3P,MALE 1-508-084-00
AUDIO OUT CH-1 to CH-4 XLR 3P,FEMALE 1-508-083-00
DC IN 12V XLR 4P,FEMALE 1-508-362-00
DC OUT ROUND TYPE 4P,MALE 1-566-425-11
CAMERA 26P,MALE(ROUND TYPE) 1-564-183-00
RFU OUT VIDEO RFU ADAPTOR
DC AV CABLE
AUDIO
REMOTE D-SUB 9P,MALE 1-560-651-00
JUNCTION SHELL 1-561-749-00
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1-2. Locations of Main Part and Functions of Printed Circuit Board
1-3. Matching Connectors

1-9
DVW-250/250P
1-4. Signal Input/Output
INPUT
SDI IN D1 format serial digital (Video, Audio 4 ch)
SMPTE 259M/ITU-R BT.656
VIDEO IN Analog composite : 1.0 V p-p,75 Ω
CAMERA D1 format serial digital (Video, Audio 4 ch)
Analog component : 1.0 V p-p,75 Ω(Y)
0.7 V p-p,75 Ω(R-Y,B-Y)
Analog audio : Selectable between –60,-20 and +4 dBu
Impedance 10 kΩor more, balanced
AUDIO IN CH-1 to CH-4 Selectable between –60, –20 and +4 dBu
Impedance 10 kΩor more, balanced
TC IN 0.5 to 18 V p-p, impedance 10 kΩ±10%, unbalanced
DC IN 12 V 11 to 17 V
OUTPUT
SDI OUT D1 format serial digital (Video, Audio 4 ch)
SMPTE 259M/ITU-R BT.656
VIDEO OUT Analog composite : 1.0 V p-p,75 Ω
Selectable text superimposition on output 2 only
AUDIO OUT CH-1 to CH-4 +4 dBm (600 Ωload), balanced
TC OUT 2.2 V p-p (10 kΩload), unbalanced
1.0 V p-p (75 Ωload), unbalanced
EARPHONE –17 dBu maximum (8 Ωload), adjustable
HEAD PHONES –17 dBu maximum (8 Ωload), adjustable
1-4. Signal Input/Output

1-10 DVW-250/250P
CAMERA:26-pin (female) <External view>
Pin No. Signal Signal direction Specification
CAMERA VTR
A DC +12 V Unregulated +12 V DC Power Supply
B GND DC Power Return
1 CAM SDI *1 Zi = 75 Ω±5 %
2 GND (CAM SDI) *1
3 GND (LUMINANCE) Zi = 75 Ω±5 %
4 LUMINANCE
5 R-Y VIDEO Zi = 75 Ω±5 %
6 GND (R-Y)
7 B-Y VIDEO Zi = 75 Ω±5 %
8 GND (B-Y)
9 MIC (X) Zi = 3 k to 10 kΩ
10 MIC (Y)
11 GND (MIC) BALANCED
12 VTR START/STOP START STOP
5+3 V0
+0.5 V or open
–1 –1
13 BATT. IND
14.5 V Max open, 2-3 V with 300 Ωload
A/B:50 ±10 % duty,
frequency 1 ±0.2 Hz or 4 ±0.8 Hz.
14 COMPOSITE/SDI Composite:+5 V or open, SDI:GND
15 REC/TALLY
A/B:50 ±10 % duty,
frequency 1 ±0.2 Hz or 4 ±0.8 Hz
16 (SPARE)
17 SHIELD VTR GND
18 CAM RETURN VIDEO VS = 1 V p-p ±1 dB
19 GND (CAM RETURN VIDEO) DC:0 ±200 mV
Zo = 75 Ω±5 %
A
B
123456
78910 11
12 13 14 15 16 17
18 19 20 21 22
23 24
1-4. Signal Input/Output
2–3V/300Ω
before end
AB under cut
AB REC
Warning Alarm
VTR Connected
5.0+1.0
–0.5V
2.5±0.5V
0±0.3V
REC Reset
10 –100ms
VTR
Disconnected