SPOT 4.1 Basic and Advanced Software Manual for SPOT Insight ...

Ch. 5 – Preparing to Take a Picturef) If you choose the Sequential Imaging Function you will need to use the external trigger tobegin and terminate every exposure. No timeinterval options or other selections related totriggering will be functional in the SequentialImaging Window.Pulse Characteristics:• Minimum Reliable Pulse width: 100 ns• Minimum Exposure: 37.5 µs +Pulse Time• Delay to Exposure Start: 6.195 µs ±0.028 µs• Delay to Exposure End: 0.195 µs ±0.028 µs• Voltage Logical High Level: 3.3 – 5.0 volts• Voltage Logical Low Level: 0.0 - 0.5 voltsEdge Trigger (3-Shot)Edge Trigger allows you to use an external TTL source to trigger an image capture according to theexposure time(s) that you enter on the Image Setup window.Bulb Trigger (8 and 12 bit mono)Bulb Trigger allows you to use an external TTL source to vary exposure time according to the TTL pulsewidth.Exposure TimeThere are three options for entering user-defined exposure times. With the SPOT camera, you can:• Manually enter the value.• Allow the camera to calculate the value.• Recall the exposure time and the gain used for the previous image capture.When you select the User-Defined option on the Image Setup, a default value appears for the ExposureTime.To manually enter new exposure value(s) follow these steps:1. Ensure that the User-Defined Exposure box is selected.2. Select either the msec (milliseconds) option or the sec (seconds) button.3. Either use the selection arrows or type in a value (in seconds) for the exposure time.− The minimum exposure time is .04 millisecond (.00004 seconds).− The maximum exposure time is 536,000 milliseconds (536 seconds).4. Click on OK to save the settings.102 User Guide to the SPOT Insight Camera