National Instruments NI PXIe-6672 - Manual (Page 36)

© National Instruments Corporation A-1 NI PXIe-6672 User Manual
A
Specifications
CLKIN Characteristics
CLKIN fundamental
frequency range
1 .................................... 1 MHz to 105 MHz,
sine or square wave
Input impedance ..................................... 50
Ω, nominal
Input coupling ........................................ AC
Voltage range
DC ................................................... ±20 V
AC ................................................... 400 mV
p-p
to 5 V
p-p
Absolute maximum input voltage 2 ......... ±26 V, max
CLKIN to PXI_CLK10_IN delay
without PLL ........................................... 14 ns to 14.7 ns, typical
CLKIN to PXI_CLK10 delay
with PLL ................................................ ±1 ns, max
CLKIN frequency accuracy requirement
For PLL and TCXO ........................ ±5.0 ppm
For replacing PXI_CLK10
(no PLL).......................................... ±100 ppm
3
1 CLKIN fundamental frequency can be any multiple of 1 MHz within the range specified when the PLL is engaged and
PXI_CLK10 is locking to it. The frequency must be 10 MHz when replacing PXI_CLK10 without the PLL.
2 Stresses beyond those listed can cause permanent damage to the device. Exposure to absolute maximum rated conditions for
extended periods of time can affect device reliability. Functional operation of the device outside the conditions indicated in
the operational parts of the specification is not implied.
3 This is a requirement of the PXI specification.