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National Instruments Corporation
5
NI 5402/5406 Calibration Procedure
Test Equipment
External calibration requires different equipment for each applicable
specification. Refer to Table 1 for information about the required
equipment.
Test Conditions
Follow these guidelines to optimize the connections and the environment
during calibration:
•
Keep connections to the NI 5402/5406 short. Long cables and wires
act as antennae, picking up noise that can affect measurements.
•
Keep relative humidity between 10% and 90% non-condensing.
•
Maintain a temperature between 18
°
C and 28
°
C.
•
Allow a warm-up time of at least 15 minutes after NI-FGEN initiates
a session to the board. The warm-up time ensures that the measurement
circuitry of the NI 5402/5406 is at a stable operating temperature.
Table 1.
Equipment Required for Calibrating the NI 5402/5406
Equipment
Recommended Models
Requirements
Digital multimeter (DMM)
NI PXI-4070/4071
Agilent/HP 34401A
Keithley 2000
DC accuracy
≤
±50 ppm
Resolution
≤
1
μ
V
Frequency Counter
Agilent/HP 53131A
Ability to measure 10 MHz or
higher sine waves
Frequency accuracy of
±
500 ppb
Power Meter
Rohde & Schwarz NRVS
power meter with Rohde &
Schwarz NRV-Z53 sensor
Agilent E4419B Power Meter
with Agilent E9304A power
sensor
Power accuracy ± 0.10 dB
For flatness measurements
from 50 kHz to 50 MHz
Male banana to female BNC
adapter
—
—
Male BNC to female SMB cable
—
50
Ω,
RG-223
