Appendix A
Specifications
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