Appendix A Specifications
NI PXI-7831R User Manual A-6 ni.com
Timebase accuracy
With onboard base clock.................±100 ppm
Phase locked
to PXI 10MHz clock .......................±350 ps jitter, 300 ps skew (max)
Calibration
Recommended warm-up time.................15 minutes
Calibration interval.................................1 year
Onboard calibration reference
DC level...........................................5.000 V (±3.5mV)
(actualvalue stored
in flash memory)
Temperature coefficient...................±5ppm/°C max
Long-term stability..........................±20 ppm/
Note To generate a calibration certificate for the NIPXI-7831R, click On-line
Calibration Certificates at ni.com/calibration.
Bus Interface
PXI..........................................................Master, slave
Power Requirement
+5 VDC (±5%)
NIPXI-7831R .................................450 mA (typ), 700 mA (max)
(doesn ot include current drawn
from the +5 V line on the
I/O connectors)
+3.3 VDC (±5%)
NIPXI-7831R .................................335 mA (typ), 730 mA (max)
Power available at I/O connectors..........+4.65 to +5.25 VDC at 1 A total,
250m A per I/O connector pin
1 000 h,