
(0 dBm to +13 dBm) Square wave: 0.2 Vpk-pk to 2.8 Vpk-pk into 50 . — Maximum Input Overload ±10 V — Input Impedance 50 . — Input Coupling AC — © National Instruments Corporation 19 NI 5421 Specifications PFI 0 and PFI 1 PFI 0 and PFI 1 Table 6. Specification Value Comments Connectors Two SMB (jack) — Direction Bi-directional — 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 k. As an Out