JAI CV-M50 Operation Manual

Contents

JAI CV-M50 Operation Manual Manual pdf 12 page image

- 11 -CV-M50Cautions in the Start/Stop Trigger Mode.1. The input of ext. VD signal must be given continuously to synchronize with int. VD signal. It is notpossible to input ext. VD signal randomly.2. The exposure start may delay up to 1H max., when the falling edge of ext. trigger pulse is notsynchronized with the falling edge of ext. HD signal. To avoid this 1H jitter and delay, the falling edgeof the ext. trigger pulse should be synchronized within 4.4 usec. to the HD pulse. It can be the ext. HDinput or the internal HD output.Shown under cautions in Edge Pre-select Mode page 7.3. In this mode, the ext. trigger has to be TTL level (2.0 to 5.0 V). It cannot be 75 Ohm terminated. Theduration should be more than 1 H negative going. >64 μsec. and < 1 msec. The input is AC coupled.4. If the ext. VD input and ext. HD input are from a source with TTL level, set SW2-1 and SW2-2 onPK8057 board OFF for non-terminated. SW2-1 for ext. HD signal, SW2-2 for ext. VD signal. See “7.2SW2 on PK8057 Board”.5. Each scanning mode requires the following number of external trigger pulses:- 2:1 interlaced: 2 external trigger pulses per frame- Non-interlaced: 1 external trigger pulse per fielda) Interlaced mode (Frame accumulation mode)b) 2:1 Interlaced mode (Field accumulation mode)c) Non-interlace moded (Field accumulation mode)t1 t1Ext. VDExposuretimeVideoExt.Trg. 1 2ExposuretimeVideoExt.Trg.Ext. VD1 21timeVideoExt. VDExposureExt.Trg.