NI PXIe-6674T Calibration Procedure
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© National Instruments
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3
3. Adjustment.
4. Reverification.
Initial Setup
Complete the following steps to set up the NI PXIe-6674T for calibration.
1. Make sure the PXI Express chassis involved in the calibration procedure is powered off.
2. Install the NI PXIe-6674T board into the system timing slot of your chassis.
Note
The module
must
be installed in the system timing slot of the chassis.
3. Power on the PXI Express chassis.
4. Make sure that all the appropriate driver and application software is installed on the host
computer.
5. Configure the hardware properly with Measurement & Automation Explorer (MAX). Refer
to the
NI PXIe-6674T Installation Guide
for details about configuring the PXI Express
equipment.
Verification
The following steps outline the procedure for measuring the 10 MHz oscillator frequency on the
NI PXIe-6674T and determining whether the device requires adjustment to meet the published
specifications.
Connecting the Clock Source
1. Connect the external 10 MHz reference source to the CLKIN connector on the
NI PXIe-6674T.
2. Program the NI PXIe-6674T to route the CLKIN signal to PXI_CLK10_IN without using
its 10 MHz PLL by completing steps a through d.
Note
Use the data in the C function call reference as inputs to your LabVIEW VI
where applicable.
a. Call niSync Initialize VI to set up a handle for the device.
LabVIEW Block Diagram
NI-SYNC C Function Call
Call
niSync_init
with the following
parameters:
resourceName
:
Dev1
idQuery
:
NULL
resetDevice
:
VI_TRUE
vi
:
*SessionHandle
