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Texas Instruments MC-780PIx User Manual

Page 29

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Random Shutter (Fixed V Sync)

4-3

Using the Shutter Modes

4.2

Random Shutter (Fixed V Sync)

On the rear panel mode switch SW3, set switch 1 to ON and switch 2 to OFF.
Use the shutter speed control switch SW1 to set the shutter speed.

The random shutter operates only when the shutter command has been
added, so continuous shutter is the normal operating mode.

Figure 4–2 shows the random shutter speed control timing with fixed V sync.

Figure 4–2. Random Shutter Control Timing (Fixed V Sync)

249

µ

s (PIA)

142

µ

s (PIH)

1 Field

Read out

Field indicator output

Shutter monitor output

Shutter command

Output interruption