
6.3. External Trigger Mode
External trigger mode of
1Edge
2Pulse Width Control mode. (Exposure control by the low period of the ext. trigger)
For both there are two trigger modes. H reset and H
The trigger input is AC coupled, so there is a maximum pulse width for the trigger pulse about 1 msec. The signal level must be 4.0V
6.3.1. Edge Pre-select Trigger Mode
This trigger mode can operate in H reset mode or H
In H reset mode the falling edge of the trigger will immediately reset the internal HD and start the exposure. The trigger input should be > 2 ∝ sec. to < 1 msec. If the camera is synchronized to an external HD, there are some requirements to the phase between the ext. HD and the Ext. trigger. The falling edge of the trigger should be within 4.4 msec. from the falling edge of the ext. HD. Otherwise the jitter will be too high. (See fig. 6.3)
In H
<1msec. An external trigger pulse initiates the capture, and the exposure time (accumulation time) is governed by the fixed shutter speed set up by the rear panel
To use this mode
Set: |
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| JP12 on PK8206 (BX ver.) or PK8190 (RS ver.) OPEN for Edge |
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| JP13 on PK8206 (BX ver.) or PK8190 (RS ver.) OPEN for H Reset |
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| JP13 on PK8206 (BX ver.) or PK8190 (RS ver.) Short for H Non Reset |
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| Ext.Trigger |
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| 2.0µs~1ms |
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| 4.±1.0V(pp) | ||||||||
Note: |
| Ext.HD | A A |
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| A=4.4µAS | |||
For | |||||||||
| RS232C. |
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| (See chapter 7 and 8 for details) |
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6.3.2. Pulse Width Control Trigger Mode
This trigger mode can operate in H reset mode or H
In H reset mode the exposure will start immediately at the falling edge of the trigger. (The internal H will not be reset). The exposure will end and the internal H will be reset at the rising edge of the trigger.
In
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