JAI CV-A60, CV-A50 operation manual Functions and Operations, Basic functions

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CV-A50 / CV-A60

6. Functions and Operations

Apart from the standard continuous operation, the CV-A50/60 features three external asynchronous trigger modes (edge pre-select, pulse width controlled and start/stop) and a special frame-delay readout mode. Long integration time mode is also supported.

6.1. Basic functions

Some of the primary camera functions need a general introduction before the operation modes are described. The list below shows the primary functions from the command list.

SM

Shutter Mode

Normal shutter, Programmable Exposure

SH

Shutter Speed

Off to 1/10,000 second

PE

Programmable Exposure

1.5 H to 1023.5 H

SC

Scanning Format

Interlaced, non-interlaced, (1/2 partial, 1/3 partial)

TR

Trigger Mode

Normal, Edge, PWC, frame delay readout

 

 

Long time exposure, start-stop

FR

Accumulation

Field, Frame

The shutter SM can be set to normal (SM=0), where the exposure time is selected from 8 fixed step with the command SH, or programmable exposure (SM=1). Here the command PE allows up to 1023 steps with 1 period resolution (64 µs) for edge pre-select mode. For normal modes PE can be up to 312 for CCIR and 262 for EIA.

The scanning format SC can be selected between interlaced and non-interlaced sync signals. Further it is possible to select 1/2 and 1/3 partial scanning. It is not supported for the camera.

The accumulation FR can be field or frame. Fig. 9. show details for frame and field accumulation with shutter OFF, (left(, and shutter on, (right).

The accumulation in all trigger modes is H synchronous. The exposure will start at the first HD pulse after the trigger falling edge. Fig. 8. shows the details. In all triggered shutter modes, the shortest shutter time is limited to ≥1.5 H or 1/10,000. In trigger modes, the exposure time is not limited to the readout time. It can be longer.

HD

Trigger

Accum

X b

Fig. 8. PWC H synchronous accumulation.

Time t0

t1

t2

t3

t4

VD

Frame accum. Xsg1Xsg2

Photo

Field 1

charge

Field 2

Video out

 

 

Interlaced

E

O

 

Field accum. Xsg

Photo

Field 1

charge

Field 2

Video out

Sync

Interlaced

E

O

 

E

E

 

 

Time t0

t1

t2

t3

t4

VD

Frame accum. Xsg1Xsg2

Photo

Field 1

charge

Field 2

Video out

Interlaced E O

Field accum. Xsg

Photo

Field 1

charge

Field 2

Video out

Sync

Interlaced

E

O

Non-interlaced

E

E

 

Fig. 9. Frame and field accumulation without shutter (left) and with shutter (right).

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Contents CV-A50 / CV-A60 CV-A50 / CV-A60 Table of ContentsGeneral Main FeaturesStandard Composition Camera Housing and Dimensions Pin Multi-connector Trigger and RS232C Pin Multi-connector DC-IN/VIDEO OUT, EXT.HD/VDPin Assignment HD and VD input Input and Output CircuitsVideo output Trigger inputBasic functions Functions and OperationsContinuous Operation Non triggered Input-output of HD/VD SignalsCV-A50 / CV-A60 Vertical timing details for interlaced. Ccir Vertical timing details for interlaced. EIA Start/stop Mode. TR=5 External Trigger ModesImportant notes on using this mode Edge Pre-select ModePulse width control Ccir Pulse Width Control ModePage Long time exposure. Field accumulation Long Time Exposure ModeStart/stop mode. Interlaced with frame accumulation Start/Stop ModeOther Functions RS-232C control Configuring the CameraTiming and shutter related commands CV-A50/60 RS-232C command listCamera Control Tool for CV-A50/60 Selecting termination of HD/VD input signals Internal Switch and Jumper Settings1 HD/VD input-output selection CV-A50C CV-A50E CV-A60C CV-A60E SpecificationsAppendix Spectral SensitivityCV-A50 or CV-A60 emulating CV-M50 interfacing CV-A50/60 without sync on video output WEN out on pin 6 on 6 pin connectorTypical CCD Characteristics PrecautionsCamera type CV-A50/60 Users Record
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