JAI CV-A2 Operation Manual

JAI CV-A2 Operation Manual Manual pdf 14 page image

CV-A26.5. Edge Pre-select ModeThe exposure starts at the first HD pulse after the trigger leading edge. It stops and is read outafter the duration of the shutter time selected. It can be the first 10 steps in normal or 2047steps in programmable shutter. SM=0 or SM=1. Shutter selections SH ≥10 will result in 1/12,000sec. This mode will operate with full and partial scanning and with V binning modes. If partialscanning and binning is selected at the same time, partial scanning will have priority.An EEN pulse will indicate the active accumulation time, and a WEN pulse indicates that theresulting video is being read out.To use this mode:Set function: Trigger mode “Edge Pre-select” TR = 1Shutter mode “Normal” or “Programmable” SM=0, SM=1“Shutter Speed” SH=0 through 10“Programmable exposure” PE=1 through 2047Polarity and other functionsInput: Ext. trigger to pin 5 on 6 pin connector (or pin 11 on 12-pin connector).Ext. HD to pin 6 on 12 pin connector. (If used).Important notes on using this mode.• The start of exposure will start synchronized to the internal H signal. The start may beshifted max 1H. To avoid this shift (1 H jitter), synchronize the camera to an external HDand make sure that the trigger pulse aligns to the HD as shown in fig. 18.• The duration of the trigger should be >1H.• A new trigger must not be applied before WEN is high.• In trigger modes there are no continuous VD out, only after each trigger input.Table showing the figures for the different modes.Scan modeA B CCCD array line #DEffective videoE Max frame ratefpsRemarksFull 3H 20H 8 to 1227 1220H 18H 151/2 Partial 21H 36H 314 to 923 610H 29H 281/3 Partial 21H 36H 415 to 822 408H 29H 401/6 Partial 21H 36H 517 to 720 204H 29H 70V binning 3H 20H 26+27 to 1212+1213 594H 18H 30Fig. 19. Timing for Edge Pre-select with partial scanning and binning.- 13 -