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A
Specifications
CLKOUT Characteristics
Output frequency
1
............................................. 10 MHz
Duty cycle distortion
1
....................................... <1%, typical
Output impedance............................................. 50 Ω, nominal
Output coupling ................................................ AC
PXI_CLK10 to CLKOUT delay....................... 8 ns, typical
Square wave rise/fall time
(10 to 90%) ....................................................... <1 ns, typical
CLKIN Characteristics (NI PXI-6683 only)
CLKIN input frequency
2
.................................. 10 MHz ±100 ppm, sine or square wave
Input impedance ............................................... 50 Ω, nominal
Input coupling................................................... AC
Voltage range .................................................... 400 mV
p-p
to 5 V
p-p
Absolute maximum input voltage
3
................... 6 V
p-p
CLKIN to PXI_CLK10_IN delay..................... 11 ns, typical
Jitter added to CLKIN ...................................... 1.3 ps
rms
, 10 Hz to 100 kHz, typical
Duty cycle distortion of CLKIN
to PXI_CLK10_IN ........................................... <1%, typical
Required input duty cycle
2
............................... 45 to 55%
1
When configured to route the on-board oscillator (TCXO) or PXI_CLK10, otherwise CLKOUT will be
disabled (default).
Load Square Wave
Open Load 5V
p-p
, typical
50 Ω Load 2.5 V
p-p
, typical
2
This is a requirement of the PXI specification.
3
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.
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