XIMEA xiB64 Series, Technical Manual

Page: 54 / 108

xiB & xiB-64 - Technical Manual Version 1.06 54
Output Wiring Example: Driving the trigger input of a strobe controller
The digital output can be used to drive a strobe controller according to the table below.
Driving the trigger input of a strobe controller
Trigger
polarity Opto-isolated
controller input Output
delay Wiring Description
Positive
edge Yes 0.5µs figure 3-31
Negative
edge Yes 0.5µs figure 3-33
Positive
edge No 155µs figure 3-34 Not recommended in cases when short delay time is required.
Output delay is much longer than in other wiring examples. Use
external pull up in case that no pull up at controller input is used.
Negative
edge No 0.5µs figure 3-34 Note that external pull up is not used in this case. Assume that
internal pull up at the controller input is used.
table 3-33, digital output, wiring examples
3.9.5.5. Digital Output – Timing
Typical input delay between FPGA Output to Digital Output
Edge Type Typ. delay [μs]
Off -> On 0.5
On -> Off 155
table 3-34, digital output, typical timing
Note: Measured at conditions: V
OUTPUT
=18V, T
AMBIENT
=27°C
Output delay depending on output current:
Output current OFF->ON ON->OFF
2mA 0.55μs 184μs
5mA 0.55μs 182μs
10mA 0.55μs 133μs
25mA 0.55μs 113μs
table 3-35, digital output, current depending timing
Note: Measured at conditions: V
OUTPUT
=11V, T
AMBIENT
=25°C