National Instruments NI PXI-5621 - Manual (Page 7)

© National Instruments Corporation 7 NI PXI-5621 Specifications
Triggering
Modes..................................................... Immediate, software, digital
Sources ................................................... PFI 1, PXI<0..7>, PXI STAR
Export..................................................... PFI 1, PXI<0..7>
Slope....................................................... Rising, falling
Pretrigger depth...................................... Up to 32 MS
Posttrigger depth .................................... Up to 32 MS
Minimum pulse width ............................ 100 ns
External Trigger (PFI 1)
PFI 1 connector ...................................... SMB male
Trigger level ........................................... TTL
Max input voltage .................................. 5.5 V
External Frequency Reference Input
Connector (REF CLK IN)...................... SMA female
Impedance .............................................. 50 Ω nominal
Input amplitude ...................................... –5 to +15 dBm
Max non-operating input level ............... +20 dBm
Max DC input voltage............................ ±3.5 VDC
Frequency range ..................................... 10 MHz ±40 ppm
Crosstalk from reference input............... <–85 dB
Calibration
Calibration interval ................................ 1 year