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Appendix A Specifications
NI 5911 User Manual A-6 ni.com
Triggering Systems
Modes .....................................................Above threshold, below
threshold, between thresholds,
outside thresholds
Source .....................................................CH0, RTSI<0..6>, PFI 1,2
Slope .......................................................Rising/falling
Hysteresis................................................Full-scale voltage/n,wheren is
between 1 and 170; full-scale
voltage on TRIG is fixed to ±5 V
(without external attenuation)
Coupling .................................................AC/DC on CH0, TRIG
Pretrigger depth ......................................1 to 16 million samples
Posttrigger depth.....................................1 to 16 million samples
Holdoff by time ......................................40 ns – 171.85 s in increments
of 40 ns
Sensitivity ...............................................170 steps in full-scale voltage
range
TRIG input range....................................±5 V (without external
attenuation)
TRIG input impedance ...........................1 MΩ ± 1% in parallel
with 30 pF ± 15 pF
TRIG input protection ............................±42 V[(DC +peak AC)< 10kHz,
without external attenuation]