Chapter 2 Device Overview
NI 660x User Manual 2-12 ni.com
Calibration
When you are ready to calibrate your device to correct for drift in
frequency, refer to the 6601/6602 Calibration Procedure or the
6608 Calibration Procedure available at
ni.com/calibration. Click
on Manual Calibration Procedures and select your device from the list.
You can calibrate these devices in Traditional NI-DAQ (Legacy) only.
Note When calibrating the NI 6608, use an external clock with a short-term stability (over
a period of 100 s) of better than 5 × 10
–11
; otherwise, the OCXO will be improperly
calibrated. A typical rubidium time standard will meet the required stability.
Register-Level Programming Information
Caution NI is not liable for any damage or injury that results from register-level
programming the TIO Series devices.
For information about programming the NI 660x devices at the register
level, refer to the NI 660X Register-Level Programmer Manual, available
from
ni.com/manuals.
The National Instruments Measurement Hardware DDK provides
development tools and a register-level programming interface for NI data
acquisition hardware. The NI Measurement Hardware DDK provides
access to the full register map of each device and offers examples for
completing common measurement and control functions. The
Measurement Hardware DDK works with TIO Series digital I/O and
counter/timer I/O devices. Refer to
ni.com for more information.
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