National Instruments 5412, Процедура калибровки

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NI 5412 Calibration Procedure
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© National Instruments
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Test Conditions
Follow these guidelines to optimize the connections and the environment during calibration:
•
Keep connections to the NI 5412 short.
• Keep relative humidity below 80%.
• Maintain a temperature between 18 °C and 28 °C.
• Observe the 15 minute warm-up time.
Self-Calibration Procedures
The NI 5412 can perform self-calibration, which adjusts the gain and offset of the main analog
path. Self-calibration uses only an onboard ADC to measure the output voltage. You can
implement self-calibration on the NI 5412 by following procedures similar to the
Verifying the
DC Gain and Offset Accuracy and the Adjusting the Analog Output procedures. However, output
impedance, oscillator frequency, and the calibration ADC are not adjusted during
self-calibration.
You can initiate self-calibration interactively from Measurement & Automation Explorer
(MAX) or from the FGEN Soft Front Panel (SFP). Alternatively, you can initiate self-calibration
programmatically using NI-FGEN.
Spectrum analyzer,
frequency meter, or
signal source analyzer
Frequency
accuracy
Ability to measure
10 MHz or greater
sine waves
Frequency accuracy
to ≤500 ppb
NI PXI-5660
Agilent HP 8560E
Agilent
HP 53131A or
HP 53132A
with timebase
option 001, 010, or
012
Rohde & Schwarz
(R&S) FSUP
BNC(m)-to-SMB(f)
cable
50 Ω, RG-223 —
Power meter/sensor Frequency
response
(flatness)
VSWR: (50 kHz to
120 MHz) ≤ 1.11
Relative power
accuracy: ≤ 0.022 dB
R&S NRP-Z91
Type N(f)-to-SMB
plug adapter
VSWR: 1.3 Pasternak PE9316
Table 2.
Equipment Required for Calibrating the NI 5412 (Continued)
Instrument
Applicable
Specification
Minimum
Specifications
Recommended
Instrument