Teledyne Princeton Instruments Nano-XF, System Manual

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32 Nano-XF System Manual Issue 5
Figure 6-6: Timing Diagram: Mode 1, Triggering with No Strobe Delay
6.2.2.4 Mode 1 Timing Parameters
• T
cs
(Clear Start Latency)
This 2

s interval defines the delay from the receipt of trigger to the start of the
Clear Pulse to the sensor.
This is the reaction time of the optoisolator.
• T
sd
(Strobe Delay)
This interval defines an optional, user-adjustable delay from the start of the
Clear Pulse to the issue of the Strobe Pulse.
By default the strobe pulse begins at the time the Clear Pulse ends (i.e., T
sd
= 0).
The delay is under software control and is programmable from 0 to 1 second in
100 ns increments.
• T
sw
(Strobe Width)
The duration of the Strobe Width equals the time of the Clear Pulse (T
cp
) plus
the Integration Time (T
int
) minus any optional Strobe Delay (T
sd
).
By default the Strobe Pulse begins at the time the Clear Pulse is sent to the
sensor. The start of the Strobe Pulse may be delayed by a user-adjustable
setting in the software.
• T
cp
(Clear Pulse)
This is the time it takes to clear the sensor.
The start of Clear Pulse begins as soon as possible after the camera receives a
trigger (after T
cs
).
This time is sensor dependent.
There is a nominal uncertainty in the start latency of ± 1 pixel period (1/pixel
clock rate.)
Refer to
Table 6-2 for typical values.
• T
int
(Integration Time)
This is a user-programmable interval which can range from 10

s to 120
seconds.
The absolute accuracy of the Integration Time is approximately 1

s with an
uncertainty of ±1 pixel period.
4
4
11
-0
11
6
_
0
13
Table 6-6: Mode 1: Typical Clear Pulse Time (T
cp
)
Sensor Sensor Frequency
T
cp
KAI-11002 30 MHz 19

s