© National Instruments Corporation 19 NI 5441 Specifications
PFI 0 and PFI 1(Programmable Function Interface, Front Panel Connectors)
Specification Valu e Comments
Connectors Two SMB (jacks) —
Direction Bidirectional —
Frequency
Range
DC to 105 MHz —
As an Input (Trigger)
Destinations Start Trigger —
Maximum
Input Overload
–2 V to +7 V —
VIH 2.0 V —
VIL 0.8 V —
Input
Impedance
1 kΩ—
As an Output (Event)
Sources 1. Sample Clock divided by integer K (1 ≤ K ≤ 4,194,304)
2. Sample Clock Timebase (100 MHz) divided by integer
M (2 ≤ M ≤ 4,194,304)
3. PLL Reference Clock
4. Marker
5. Exported Start Trigger (Out Start Trigger)
—
Output
Impedance
50 Ω—
Maximum
Output
Overload
–2 V to +7 V —
VOH Minimum: 2.9 V (open load), 1.4 V (50 Ω load) Output drivers are
+3.3 V TTL
compatible.
Measured with a
1 m cable.
VOL Maximum: 0.2 V (open load), 0.2 V (50 Ω load)
Rise/Fall Time ≤2.0 ns Load of 10 pF.