version 1.5 rev 4 Dec 2019
33
Sona &
Marana
4.7.3 t
iMing
p
aRaMeteRs
and
e
xteRnal
t
RiggeRing
The timing tables accompanying each of the triggering diagrams that follow indicate the exposure and cycle times
achievable in each triggering mode. These are based on Frame and Row Periods as shown below.
Timing Parameters based on Sensor Clock Speed
:
1 Row
20.52 μs
1 Full Frame (2048 rows) 42.025 ms (16-bit)
21.012 ms (12-bit)
Note: due to the architecture of the sensor in a “Row Time” in 16-bit mode a single row from the sensor can be read,
however, in 12-bit 2 rows are read out within this period. The definition of the term Row time used here is because all
actions with the sensor are synchronised to this Row time.
In External and External Start Triggering Modes, the minimum trigger pulse width detected by the camera is:
Minimum EXT Trigger Width
EXT Trig Pulse Width
6.6 ns
4.7.4 R
olling
s
HUtteR
i
nteRnal
t
RiggeRing
(n
on
-o
veRlap
M
ode
)
Internal Trigger Mode allows the user to configure an exposure time and cycle time. For Internal Triggering Non-overlap
mode, the exact acquisition sequence depends on the exposure time and cycle time set as shown in Figures 7 and 8.
The following diagrams show the behaviour of TTL outputs ‘Fire’, Fire n’, ‘Fire ALL’ and ‘Fire ANY’.
Fire ALL
indicates the time period within a frame during which all rows are exposing simultaneously.
Fire ANY
indicates the time period within a frame during which any row is exposing.
Figure 7: Internal Triggering “short” (non-overlap)
