Teli CS3720 Operation Manual

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B/W CCD Camera

Model CS3720

Operation Manual

TOKYO ELECTRONIC INDUSTRY CO., LTD.

2000-08-07

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BEFORE USE ------ GENERAL SAFETY INSTRUCTIONS

This instruction manual contains important information for the operator(user) and/or people around him/her to avoid personal injuries, or property damages against him/her or people around him/her by using this product correctly. Prior to use, read this operation manual carefully to fully understand its instructions for correct use.

OWNER'S RECORD

Enter the blank below Product Serial Number, which is found on bottom/rear chassis of your device. Keep. this number for your record.

Serial No.

WARNINGS & CAUTIONS

[Definition of markings] The meaning of each mark used in this instruction manual is given below.

DANGER

This mark warns the user that improper use, indicated with this mark, may cause death or severe personal injuries against the user or people around him/her.

CAUTION

This mark warns the user that improper use, indicated with this mark, may cause personal injuries (*1) or material damages (*2) against the user or people around him/her.

Notes *1 : Personal injuries mean wounds, burns, electric shocks, and others for which the person injured need not to be hospitalized nor to be cared for the long term. *2 : Material damages mean any direct or consequential damages related to property or material loss

[

This mark indicates what the user SHOULD NOT DO. The details of things which the user should not do are described next to this mark.

This mark indicates what the user MUST DO. The details of things which the user must do are described next to this mark.



This mark indicates that the user must be alert against a possible DANGER. The details of the DANGER which the user must be aware of are described next to this mark.

This mark indicates that the user are given a CAUTION against possible hazards. The details of the CAUTION which the user must be aware of are described next to this mark.

QHandling Precautions

DANGER

If any overheating sign is observed, discontinue he use immediately. In the event that smoke, smell, or any other overheating sign is observed, turn the power switch of the system OFF immediately, and remove the camera cable from the camera connector. Do NOT try to continue to use the camera. To do so in spite of clear signs of malfunction invites a fire, an electric shock hazard, or a serious damage to the camera. In such case, contact us or our dealer/distributor from which you purchased the camera for repair service.

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If any malfunctioning sign is observed, discontinue the use immediately. NOT try to use the camera when it is malfunctioning. (Ex. No images on the monitor) In the event of malfunction, turn the power switch of the system OFF immediately, and remove the camera cable from the camera connector. In such case, contact us or our dealer/distributor from which you purchased the camera for repair service.

If any foreign object / liquid gets into the camera, discontinue the use immediately. In the event that liquids, small particles, or any other foreign objects get into the camera, do NOT try to continue to use the camera. To do so invites a fire or an electric shock hazard. In that case, turn the power switch of the camera OFF immediately, and remove the camera cable from the camera connector. After that, contact us or our dealer/distributor from which you purchased the camera for repair service/technical advice.

[

Do NOT disassemble the camera Do NOT attempt to pull apart, repair, or modify the camera on your own. To do so leads to a fire or an electric shock accident. Contact us or the dealer/distributor from which you purchased the camera for repair/modification.

[

Do NOT supply any power other than specified. The camera is designed to work only under specified voltage. Do NOT attempt to drive the camera with the power other than specified. Operating the camera under unspecified power invites a fire or an electric shock hazard.

[

Do NOT use the camera in a high-humidity environment. Do NOT place the camera near a humidifier, or in other high-humidity environment. To do so may cause a fire or an electric shock accident.

CAUTION

If the camera is operated in the electromagnetic field, there may be cases where beat noises (vertical, horizontal, or oblique stripes) may appear in the video output. In that case, take preventive measures on the electromagnetic-wave generating source so that the camera do not receive the interference by the electromagnetic-wave. Take extra precautions against electromagnetic-wave-interference if the camera is used with a servomotor, inverter, or other electromagnetic-wave-generating equipment. Avoid giving a strong shock against the camera. If your camera is used in the system where its camera connector is subjected to strong repetitive shocks, the camera connector is possible to break down. If you intend to use your camera in such a situation, make sure to use an optional camera-connector-fixing-hardware to connect the connector-plug to the camera body. When the camera is not in use, make sure that a lens or lens-cap is put on so that the image pickup plane of CCD is protected from dust, foreign object, or other flaw-causing object. If the glass plane (image pickup plane) gets dirty, clean it with a cotton swab. When it needs to be cleaned with a cleaner, be sure NOT to use any organic solvent other than ethyl alcohol. As a countermeasure against condensation, when the camera is moved from a warm place to a cold place, take appropriate precautions to prevent condensation from forming on the camera. Do not pull strongly the camera cable nor swing it. The stress from pulling or swinging may cause damage in the coating of the cable, or breaks in the inside wires.

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Avoid shoat-circuiting its signal output. Otherwise, the camera might be damaged.

If too much amount of light, (= the incoming light amount of 100 times or greater in

comparison with standard light) enters CCD image pickup plane, video output might not be obtained. In such a case, take measures to reduce the amount of incoming light.

Do NOT expose the camera to intensive light (sunlight, etc.) to prevent its inner CCD

from getting damaged.

When mounting a lens, take extra caution so that the lens is not tilted, nor does flaw exist

at the lens-mount-screw part. Also check to confirm that no dirt nor other foreign object is put inside. Improper mounting might cause the parts to become locked.

Do NOT connect/disconnect connectors with power ON.

Before connecting/disconnecting connectors, make sure to check if the system. is powered OFF. Doing so with power ON may cause a damage or an electric shock accident.

DANGER

[

Do NOT use any optional unit other than manufacturer-supplied one. [We disclaim any responsibility for damages or losses incurred by user due to the use of unauthorized / unofficial option units supplied by a third-party]

RESTRICTION FOR USE

In case malfunction of this equipment (e.g. video output cut-off) can be expected to lead to significant accident, avoid using this equipment for such system integration use.

CASES FOR INDEMINITY (LIMITED WARRANTY)

We shall be exempted from taking responsibility and held harmless for damages or losses incurred by user in the following cases.

1. In case damages or losses are caused by fire, earthquake, or other acts of Gods, the act by third party, misuse by the user deliberately or erroneously, use under extreme operating conditions.

2. In case indirect, additional, consequential damages (loss of expected interest, suspension of business activities) are incurred as results of malfunction or nonfunction of the equipment, we shall be exempted from assuming responsibility for such damage.

3. In case damages or losses are caused by incorrect use which is not in line with the instructions in this instruction manual.

4. In case damages or losses are caused by malfunction resulting from bad connection with other equipment.

5. In case damages or losses are caused by repair or modification done by the user.

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IMPORTANT SAFETY INSTRUCTIONS

(1) Use DC12V power. Avoid using any other unspecified power source. (2) This device is designed and guaranteed to work under the temperature range of 0

through 40 degree C. Avoid using the equipment beyond that limits.

(3) Do NOT expose the camera’s image-pickup-plane to sunlight or other intense light

directly. Its inner CCD (charge-coupled device) might be damaged.

(4) When your camera is not in use, make sure a lens or lens-cap is on the camera-head

so that the image pickup plane of CCD is protected from dust, foreign object, or other flaw-causing object.

(5) Handle your camera with care. Do NOT drop nor give a strong shock to avoid

breakdown.

(6) In the event that any abnormal condition is observed, turn the power switch OFF

immediately. Do NOT try to continue to use the camera. To do so in spite of clear signs of malfunction invites a fire, an electric shock hazard, or any other serious damage to the camera. In such case, contact us or our dealer/distributor from which you purchased the camera for repair service.

(7) To clean the body of this equipment, make sure to turn the power switch OFF first.

To remove stubborn stains, use a soft cloth soaked in diluted acid-free detergent. After that, clean with a dry cloth.

(8) In case the image-pickup-plane should be settled with fine dust, dirt, or scratched,

ask our distributor for technical advice.

CONTENTS

1. PRODUCT DESCRIPTION

2. FEATURES

3. CONFIGURATION

4. OPTION UNIT

5. FUNCTION / LOCATION OF SWITCHES AND OTHERS

6. OPERATION MODE

7. CONNECTOR CONNECTION

8. SPECIFICATIONS

9. TIMING CHART

10. EXTERNAL VIEW

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1. PRODUCT DESCRIPTION

Model CS3720 is a separated-type (two-body) B/W CCD camera with all-pixel-data readout CCD. This model has twice greater driving frequency of CS3710 to achieve

fast-speed data-processing. The model is suited for high-speed, high-resolution image processing use.

2. FEATURES

(1) Double-speed scan This model reads out image-data twice as fast as conventional cameras do.

(2) All pixel’s data readout With its built-in all-pixel-data-readout CCD, this model can read out image-data just in approximately 1/120 sec. A frame-shutter reads out all data even under RTS mode.

(3) Random trigger shutter function With a built-in RTS (Random Trigger Shutter), the camera’s CCD starts light-exposure in synchronization with external trigger signals. This function enables the camera to capture fast-moving subjects at constant position for precise image processing.

(4) Programmable partial scan Readout portion of pixels is determined by external pulse. As only needed portion is read out, further speed-up in data-readout & processing is achieved.

(5) High vertical resolution As all pixel’s data are read out even under RTS mode (in 1/120 sec.), images with no deterioration in vertical resolution are obtained.

(6) Square grid pattern CCD Pixel’s in CCD ace aligned in square grid pattern. This makes it easier to perform computation correctly for image processing use.

(7) External Sync. The camera is switched over to external synchronization operation automatically when external HD/VD signal is input.

(8) Multiple shutter With this function, the camera can capture video at any given timing, then outputs video images at a set timing.

(9) Ultra-compact & light-weight camera head The model features its ultra-compact and light-weight camera head, freeing you from your integration-space-problem. In addition, it has an excellent shock & vibration resistance.

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3. CONFIGURATION

(1) Camera head (With a 3.0m directly-fixed camera-cable) 1 (2) Camera Control Unit 1 (3) Accessory

Operation Manual 1

4. OPTION UNIT

(1) DC SYNC IN cable (Model name: CPRC3700) 1 (2) Camera adapter (Model name: CA170) 1 (3) Camera mounting kit 1

5. FUNCTION / LOCATION OF SWITCHES AND OTHERS

1: POWER Power ON / OFF selection SW 2: SHUTTER. (M) Shutter mode selection SW 3: SHUTTER. (S) Shutter-speed selection rotary SW 4: GAIN CONT Gain control selection SW 5: GAIN Gain control potentiometer under manual setting mode 6: PED Pedestal (black) level control potentiometer 7: MODE Video output mode selection SW

8: CAMERA Camera connector 9: VIDEO 1 OUT Video output connector 10:VIDEO 2 OUT Video output connector 11: DC IN / SYNC External-sync connector

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6. OPERATION MODE

(1)GAIN selection (CCU front-panel SW) MANU: Gain is adjustable via the manual gain potentiometer (GAIN) FIX: Factory-prefixed gain

(2)Video output mode selection (CCU front-panel SW) 1/120: 1/120s----- 2:1 interlace mode (Dual-line output) 1/60: 1/60s----- Non-interlace mode (Single-line output)

(3)Shutter mode selection (CCU front-panel SW) NOR mode: Normal electronic shutter

----- High-speed shutter: From 1/20,000s through OFF (8 position)

RDM mode: Random trigger shutter

----- FIX: High-speed shutter: From 1/20,000s through OFF (8 position)

----- PULSE: Exposure-time control via ex-trigger signal pulse width

(4)Shutter-speed selection (Exposure time)

FIX: Shutter-speed control under NOR or RDM .mode (FIX: Inner SW 1-1 OFF)

(Rotary SW setting)

Position Shutter speed

0 OFF (Factory-shipped) 1 1/250s 2 1/500s 3 1/1000s 4 1/2000s 5 1/4000s 6 1/8000s 7 1/20000s

PULSE: Shutter-speed control under RDM mode (FIX: Inner SW 1-1 ON)

In this mode, the shutter-speed is controlled by the pulse width of external trigger signal. Use this mode when you need wider, user-defined shutter-speed.

Exposure starts at the falling edge of the external trigger signal. Exposure ends at the rising edge of the external trigger signal.

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(5)Partial-scan mode selection

IMPORTANT

Sometimes, white blooming is observed at the upper side of the screen when intensive

light enters the image-pickup-area in a wide angle. This phenomenon is not attributable

to malfunction of the camera. If the white blooming occurs, try and reduce the amount

of incoming light.

(5-1)1/2 PARTIAL: Screen half-center readout mode (Inner SW 1-2 ON, SW 1-3 OFF)

Under 1/120 interlace, the screen-center 204H is readout out of effective 485H lines (=

excluding BLK lines). This works both under internal and external sync operation.

*1 Under ex-sync, user-defined value.

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*1 Under ex-sync, user-defined value.

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Under 1/60 non-interlace, the screen-center 226H is readout out of effective 492H lines (= excluding BLK lines). This works both under internal and external sync operation.

1/60s Non-interlace

*1 High-speed

Transfer

*2 Normal-speed

Transfer

*3 High-speed

Transfer

*2 Normal-speed

Transfe

*1: Under ex-sync user-defined value.

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(5-2) PROGRAMMABLE: Readout portion programmable mode (Inner SW 1-2 OPT, SW 1-3 ON)

In this mode, the readout portion is programmable via external pulse. High-speed transfer segment is set with partial pulse input. This works under external synchronization only. An example is shown below.

EXT. VD

FIT. HD

PARTIAL PULSE

VIDEO OUT

■ The starting point of partial pulse is at the falling edge of external VD. (Length: * 1)

■ Partial pulse timing is controlled by EXT HD (at the falling edge). Set partial pulse

start point and end point with interval longer than 1H

■ The high-speed line counts during 1H are 20 lines.

■ After the high-speed transfer, 2H is allocated for blank transfer, immediately followed by

normal transfer segment.

1/120s interlace 1/60s non-interlace

1st field 2nd field

a(H) 13.0 12.5 21.0

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Example: Readout portion --- Upper part of image (Upper part of “A”, 70H, out of total effective pixel 485H)

VIDEO1 OUT

1st Field

VIDEO2 OUT

VIDEO1 OUT

1/120s 1st Field VIDEO2 OUT

*1: Under ex-s

ync,

user-defined value

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PARTIAL PULSE Input Example

1st Field

EXT. VD

VIDEO1 OUT

(Normal)

VIDEO2 OUT

(Normal)

WEN OUT

(Normal)

Partial

Pulse

VIDEO1 OUT

VIDEO2 OUT

(Partial)

WEN OUT (Partial)

*1 Under ex-sync, user-defined value. *2 “Over-partial” (=More than actual video lines) is OK. *3 Under partial-scan, WEN is output twice. The second output syncs with the first line (1H) of video output.

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(5-3) Reset: Sync-signal reset under partial-scan (Inner SW 1-4 ON) When the inner V-reset switch (SW 1-4) is set in ON position, VD signal will be reset immediately after image readout. This SW is enabled under 1/2 partial-scan mode only, and works under internal sync operation mode.

V-reset OFF (Internal-sync) VD signal: Normal 262.5H

VIDEO OUT

*1 Under 1/60 noninterlace mode 262

V-reset ON (Internal-sync) VD signal will be reset immediately after image readout. Twice faster readout is obtained in comparison with the V-reset OFF mode.

VIDEO OUT

V-reset ON/OFF (External-sync) Regardless of the V-reset ON/OFF, video output will be in sync with the external input,

EXT VT) signal

EXT. VD

VIDEO OUT

*1 Under 1/60 noninterlace mode 525H

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(6)Multiple-shutter mode (Works under RTS mode) Under the random trigger shutter mode, consecutive trigger signals give cue for starting CCD exposure, arid image is output at user-defined timing. You can use this shutter mode under external synchronization operation (E.HD, E.VD) only. The video output timing is determined by E.VD. No inner SW setting is necessary. The multiple shutter functions under all RTS mode.

TRIG

CCD Exposure

EXD. VD

EXD. HD

VIDEO1 OUT

VIDEO2 OUT

WEN OUT

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(7)Camera control unit inner SW setting (Factory-shipped setting)

IMPORTANT To avoid shock hazard, follow the instructions given below.

■ Turn the power of your system OFF first.

■ Remove all connection cables.

■ For making inner SW setting, use an appropriate device available on market.

■ Do NEVER dismount circuit boards.

(7-1) How to remove the cover. Step 1 Unscrew fastening; screws located at the bottom of camera control unit, and on the rear panel

(7 p

laces).

Step 2 Draw the cover out in the followin

direction.

To reattach the cover, follow the above steps in the reverse order.

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(7-2) Inner SW board layout

Rear side

Front side

IMPORTANT All switches other than SW1 is factory-preset. Don’t touch any factory-preset switches.

(7-3) Inner SW assignment

OFF ON

SHUTTER (FIX/PULSE)

PARTIAL (ON/OFF)

PARTIAL (1/2 Partial/Programmable)

PARTIAL V RESET (ON/OFF)

TRIG (NEGA/POS1)

NC (OFF Fixed)

TEST1 (For factory-check)

TEST2

(

For factory-check)

Inner SW (SW1) [Factory-setting]

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SW Number Function OFF ON

1 Shutter-speed FIX

(Electronic shutter)

PULSE

(TRIG width)

2 Partial-scan

ON/OFF

Normal scan Partial-scan

3 Partial-scan 1/2 Partial Programmable 4 Partial-scan

V reset

Non-reset V reset

5 TRIG polarity Negative Positive 6 NC OFF Fixed ----7 TEST 1 OFF Fixed ----8 TEST 2 OFF Fixed -----

*Notes: Under external synchronization mode, all shutter modes are acceptable.

Video Output Mode

[Front Panel SW]

Shutter Mode

[Front Panel SW]

Readout Mode [Inner SW1-2]

Partial Setting

[Inner SW1-3]

Normal scan -----

1/2 Partial

Normal

Partial scan

Programmable

Normal scan -----

1/2 Partial

1/120 Interlace

Random

Partial scan

Programmable

Normal Normal scan -----

1/2 PartialPartial scan

Programmable

Random Normal scan -----

1/2 Partial

1/60 Non-interlace

Partial scan

Programmable

(7-4) Shutter-mode

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7. CONNECTOR CONNECTION

Connector used: DC/SYNC connector --- HR10A-12R-12PB Manufactured by HIROSE DENKI

Compatible connector: DC/SYNC connector --- HR10A-12P-12S Manufactured by HIROSE DENKI

Picture: DC IN/SYNC connector

(

Rear-view)

IMPORTANT

If you plan to use video output from DC IN / SYNC connector (12 pin connector), do NOT use BNC connector outputs (2 places). If both are used at the same time, you will not obtain correct video signal due to double termination.

8. SPECIFICATIONS

Model CS3720 Image sensor All Pixel’s Data Read-out Interline CCD

Optical size 1/2 Type (= Equivalent to 1/2” image pickup tube) Active pixel 659(H) x 494(V) Unit cell size 9.9(H) x 9.9(V) micro m (Square-grid array)

Scanning area 6.4(H) x 4.8 mm Scanning lines 525 lines Interlace 1/120s 2:1 Interlace mode 1/60s Non -interlace mode Sync system Internal/External automatic switch-over Scanning frequency 31.468kHz(H)

119.88Hz(V) (1/120s 2:1 Interlace mode) or

59.94Hz(V) (1/60s Non-interlace mode)

Aspect ratio 4:3

1 GND 2 +12V 3 VIDEO.GND 4 VIDEO 1 OUT 5 HD/VD.GND 6 HD.IN 7 VD.IN 8 GND

9 VIDEO 2 OUT 10 WEN OUT 11 TRIG IN 12 PARTIAL IN

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Illumination Standard 400 lx (F5.6) (1/60s Non-interlace mode, GAIN FIX)

Minimum 4 lx (F1.4) (GAIN MAX)

Gain MANU / FIX Switch-able through front-panel selection MANU

(Manual) gain: Setting through GAIN VR

FIX (Fixed) gain: Factory-shipped preset level Video output VS 1.0V (p-p) / 75-ohm Resolution 485 lines(H) (Under 1/60s Non-interlace)

350 TV lines(V) (Under 1/120s 2:1 Interlace) S/N Standard: 50dB(p-p)/rms (GAIN FIX) Input signal (1)Ex-sync. signal HD/VD

Input level HD/VD: 5V(p-p)/10k-ohm Pulse width HD: 3.2 plus/minus 1 micro s (Negative)

VD: From 125 through 400 micro s (Negative)

Frequency variation 31.468kHz plus/minus 1 percent Phase difference HD/VD: 0 plus/minus 2.5 micro s, 1/FH/2 plus/minus 2.5 micro s

(2)Shutter trigger IN Expsure-starting-cue signal in random trigger shutter mode

Input level TRIG: 5V(p-p)/10k-ohm Pulse width Longer than 5 micro S (Negative)

(3)Partial High-speed transfer signal under partial-scan mode

Input level PARTIAL: 5V(p-p)/10k-ohm

Pulse width Setting available in 1H increments (Negative) Output signal (1)WEN CCD readout timing pulse in random trigger shutter mode

Output level WEN: Over 4V(p-p)/ 50-ohm

Pulse width 1H (Positive) Electronic shutter

Normal shutter From 1/20000 through OFF, 8 scales

RTS (FIX) From 1/20000 through OFF, 8 scales

RTS (PULSE) TRIG signal pulse width control Gamma correction Gamma =1 (Fixed) Power source

Power capacity DC12V plus/minus 10 percent

Current capacity 0.9A and over

Ripple voltage 50mV(p-p) and over

Power connector DC/SYNC IN connector (HR10A-10P-12S)(HIROSE-DENKI) Power consumption Approx. 5.0W Ambient condition Performance guaranteed:

Temperature: From 0 through 40 degree C Humidity: From 30 through 90 percent (No condensing)

Operation guaranteed:

Temperature: From 0 through 50 degree C

Humidity: From 30 through 90 percent (No condensing) Lens mount C mount External dimension Refer to the attached ex-view drawing Weight Camera-head: Approx. 65g, CCU: Approx. 700g

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Spectrum Response

(Lens characteristics is reflected in the graph below, while the characteristics of light source is not.)

Optical Black Pattern

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9. TIMING CHART

(1)1/120s 2:1 Interlace mode Odd Field’s images and Even Field’s images are output in alternating sequence through both Video 1 and Video 2 terminal in 1/120s, with odd Field’s image through one terminal, and even Field’s image through the other terminal at the same timing.

VIDEO1 OUT

VIDEO2 OUT

WEN OUT

(2)1/60s Non-interlace mode 1/60s Non-interlace signals are output through only Video 1 terminal.

VIDEO1 OUT

WEN OUT

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(3)External-sync, 1/120s Interlace mode, Odd phase (1

Field)

(4)External-sync, 1/120s Interlace mode, Even phase (2

Field)

EXT. VD

EXT. HD

VIDEO1 OUT

VIDEO2 OUT

WEN OUT

(5)External-sync, 1/120s Interlace mode, Field identification (HD-VD Phase-difference)

E. VD

EHD

VDO

TP 1: ODD RESET RANCE 3. 0 µ s TP 2: EVEN RESET RANCE 3. 0 µs TP 3: 1.5 µs

EXT. VD

EXT. HD

VIDEO1 OUT

VIDEO2 OUT

WEN OUT

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(6)

External-sync, 1/60s Non-interlace mode

(7)

External-sync, 1/60s Non-interlace mode, HD-VD Phase-difference

EXT. VD

EXT. NO

VDO

TP1:6.0µs TP2

EXT. VD

EXT. HD

VIDEO1 OUT

WEN OUT

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(8)Random trigger shutter, FIX Mode (Internal-sync operation)

TRIG

CCD

(Exp

osure;

VIDEO1 OUT

VIDEO2 OUT

WEN OUT

*1: Setting through the CCU front rotary switch.

You can set the shutter-speed with the CCU front panel rotary switch. After CCD exposure, VD gets reset in sync with HD to output video signal. Under 1/60s non-interlace, VIDEO 1 OUT only outputs signal.

(9)Random trigger shutter, FIX Mode (External-sync operation)

TRIG

CCD

(Exposure)

EXT. VD

EXT. HD

VIDEO1 OUT

VIDEO2 OUT

WEN OUT

*1: Setting through the CCU front rotary switch.

You can set the shutter-speed with the CCU front panel rotary switch. After CCD exposure, video signal is output in sync with the next EXT.VD. Under 1/60s non-interlace, VIDEO 1 OUT only outputs signal.

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(10)Random trigger shutter, PULSE Mode (Internal-sync operation)

TRI

CCD

(Exp

osure

)

VIDEO1 OUT

VIDEO2 OUT

WEN

*1: Determined by TRIG pulse width

The shutter-speed is determined by the length of trigger pulse. After CCD exposure, VD gets reset in sync with HD to output video signal. Under 1/60s non-interlace, VIDEO 1 OUT only outputs signal.

(11)Random trigger shutter, PULSE Mode (External-sync operation)

TRIG

CCD

(Exposure)

EXT. VD

EXT. HD

VIDEO1 OUT

VIDEO2 OUT

WEN

*1: Determined by TRIG pulse width

The shutter-speed is determined by the length of trigger pulse. After CCD exposure, video signal is output in sync with the next EXT.VD. Under 1/60s non-interlace, VIDEO 1 OUT only outputs signal.

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