Appendix A
Specifications
NI PXI-6682 Series User Manual
A-2
ni.com
CLKIN frequency accuracy requirement
For replacing PXI_CLK10 ..............±100 ppm
1
Jitter added to CLKIN ............................1.3 ps
rms
, 10 Hz to 100 kHz,
typical
Duty cycle distortion of CLKIN
to PXI_CLK10_IN .................................±1%, max
Required input duty cycle.......................45 to 55%
PFI<0..2>
Output Characteristics
Frequency range .....................................DC to 30 MHz
Output impedance...................................50
Ω
, nominal
Output coupling ......................................DC
Output voltage levels
Output high......................................1.1 V min, 1.6 V typical for
50
Ω
load;
2.4 V min, 3.3 V typical for
1 M
Ω
load
Output low .......................................0.3 V max, 0 V typical for
50
Ω
load;
0.7 V max, 0 V typical for
1 M
Ω
load
Absolute maximum applied voltage
2
......0 to 5 V
Output-to-output skew, asynchronous ....<1.5 ns, typical
Output-to-output skew, synchronous......<2 ns, typical
1
This is a requirement of the PXI specification.
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 specifications is not implied.
