CHEETAH Hardware User’s Manual
Imperx, Inc.
Rev. 6.2
6421 Congress Ave.
7/7/2015
Boca Raton, FL 33487
+1 (561) 989-0006
49 of 152
Figure 2.6b Standard Trigger Mode (GS Trigger Pulse Width Exposure Control)
B.
Dual Video Trigger
If the Dual Video Trigger Option is selected, the camera outputs Frame ‘A’
continuously until the external trigger signal is received. Upon receipt of the external
trigger, the camera switches to Frame B and outputs ‘N’ Frame Bs where is user
selectable from N = 1 to 256. After outputting ‘N’ Frame Bs, the camera reverts to
Frame A and outputs Frame A’s until receipt of the next trigger input.
CAUTION: The time interval between trigger pulses must be greater than the
combined exposure and frame time. If the time between triggers is too short, then the
camera will ignore some trigger pulses
2.9
STROBES
The camera can provide up to two strobe pulses for synchronization with an external
light source, additional cameras or other peripheral devices. The user can set each
strobes pulse duration and the delay with respect to the start of the exposure period
or the start of the readout period for either Frame A, Frame B or both. The maximum
pulse duration and the maximum delay can be set up to 1 second with 1.0us
precision. The strobe pulse can be assigned to either external output. Figure 2.7
shows two strobe signals positioned with respect to the start of exposure. See Section
2.14 I/O Control.
