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Appendix A Specifications
NI 7831R User Manual A-6 ni.com
Phase locked to PXI 10 MHz
Clock(NI PXI-7831R only) ....................Adds 350 ps jitter, 300 ps skew
Additional frequency dependent jitter
40 MHz............................................None
80 MHz............................................400 ps
120 MHz..........................................720 ps
160 MHz..........................................710 ps
200 MHz..........................................700 ps
Calibration
Recommended warm-up time.................15 minutes
Calibration interval.................................1 year
Onboard calibration reference
DC level...........................................5.000 V (±3.5 mV)
(actual value stored
in Flash memory)
Temperature coefficient...................±5 ppm/°C max
Long-term stability..........................±20 ppm/
Note Refer to Calibration Certificates at ni.com/calibration to generate a
calibration certificate for the NI 7831R.
Bus Interface
PXI (NI PXI-7831R only) ......................Master, slave
PCI (NI PCI-7831R only).......................Master, slave
Power Requirement
+5 VDC (±5%) .......................................450 mA (typ), 700 mA (max)
(does not include current drawn
from the +5 V line on the
I/O connectors)
+3.3 VDC (±5%) ....................................335 mA (typ), 730 mA (max)
(does not include current sourced
by the digital outputs. To
calculate the total current sourced
1,000 h