Camera interfaces
87
Mako G Technical Manual V4.2.2
Trigger definitions
Figure 43: Trigger timing diagram
Term
Definition
User trigger
Trigger signal applied by the user (hardware trigger, software trigger)
Logic trigger
Trigger signal seen by the camera internal logic (not visible to the user)
Tpd
Propagation delay between the user trigger and the logic trigger
Exposure
High when the camera image sensor is integrating light
Readout
High when the camera image sensor is reading out data
Trigger latency
Time delay between user trigger and start of exposure
Trigger jitter
Error in the trigger latency time
Trigger ready
Indicates that the camera will accept the next trigger
Registered exposure time
Exposure time value currently stored in the camera memory
Exposure start delay
Registered exposure time subtracted from the readout time and indicates
when the next exposure cycle can begin such that the exposure will end
after the current readout
Interline time
Time between sensor row readout cycles
Imaging
High when the camera image sensor is either exposing and/or reading out
data
Idle
High if the camera image sensor is not exposing and/or reading out data
Table 43: Trigger definitions
User trigger
Logic trigger
Exposure
Readout
Trigger ready
Imaging
Interline
Ɵ
me
Idle
Tpd
Trigger
latency
Exposure
start delay
Trigger
ji
Ʃ
er
Registered
exposure
Ɵ
me
Readout
Ɵ
me
N
N+ 1
N
N+ 1
Note: Ji
Ʃ
er at the
beginning of an exposure
has no e
ī
ect on the
length of exposure.
