JAI M4+ CL, M7+ CL, CV-M4+, CV-M7+ operation manual Pulse Width Control Mode

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CV-M4+/M4+CL, CV-M7+/M7+CL

6.6. Pulse Width Control Mode

In this mode the exposure starts from the leading edge of the trigger pulse, H synchronous or H a-synchronous. It stops at the trailing edge of the trigger pulse, and the resulting video is read out. This mode will operate with full and partial scanning and with all binning modes (M4+ and

M4+CL only). Partial scanning and binning in combinations is not allowed. The pulse width control mode can be used for long time integration.

If smearless read out (SL=1) is used, the exposure starts with a delay 133H after the trigger. The trigger pulse width should be longer than 133 H (5.23 msec.)

An EEN pulse will indicate the active accumulation time, and a FEN pulse indicates that the resulting video is read out.

To use this mode:

 

 

Set function:

Trigger mode “Pulse Width Control”

TR = 2

 

“H synchronous trigger”

HC=0, HC=1

 

“Smearless readout”

SL=0, SL=1

 

Polarity and other functions

 

Input:

Ext. trigger to LVDS/Camera Link or pin 10 on 12-pin connector.

Important notes on using this mode.

•The duration of the trigger can be >2H to ∞. (>72.64∝sec.). Thermal noise and dark current noise will increase by accumulation time, therefore the exposure time is not recommended to exceed 2 seconds.

•The minimum trigger interval should be >(exposure time + 1 frame). A new trigger must not be applied during the previous frame read out. (Before FEN is high).

Fig. 22. Pulse Width

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Contents CV-M4+/M4+CL CV-M7+/M7+CL CV-M4+/M4+CL, CV-M7+/M7+CL General Main FeaturesStandard Composition Locations Locations and FunctionsDigital Output Connector for EIA-644 Lvds Pin Multi-connector DC-IN/RS232CPin Assignment Video signal, LEN, FEN Digital Output Connector for Camera LinkDval and EEN Composite Sync output Input and Output CircuitsVideo output Trigger input Multi Shutter inputMUX Camera Link interfaceFunctions and Operations CV-M4+Block DiagramBasic functions Binning Color coding from a Primary RGB CCD Bayer filter Color versions CV-M7+and CV-M7+CLRestart Continuous Trigger mode. RCT Output of Timing SignalsPolarity and other functions Continuous Operation Non triggeredVertical timing details, full frame Vertical timing details with 1/2 partial scanning Accumulation latency time for H a-synchronous trigger External Trigger ModesImportant notes on using this mode Edge Pre-select ModeEdge Pre-select, smearless Pulse Width Pulse Width Control ModeFrame Delay Frame-delay read out ModeMultiple exposure, normal and smearless Frame-delay read out Mode with multiple exposureGain and set-up Other FunctionsInternal Switch and Jumper Settings Configuring the CameraMode setting SW1 on rear Mode setting SW301 insideRS-232C control Timing and shutter related commands CV-M4+command listCamera Control Tool for CV-M4+ Specifications External Appearance and DimensionsSpectral sensitivity Specifications Specification tableTypical CCD Characteristics PrecautionsAppendix Camera Link test points Camera Link Test pointsUsers Record Users Mode Settings Users Modifications
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