Manual
Table Of Contents
- ANSI C63.17-2006 Front Cover
- Title page
- Introduction
- Notice to users
- Participants
- Contents
- American National Standard Methods of Measurement of the Electromagnetic and Operational Compatibility of Unlicensed Personal Communications Services (UPCS) Devices
- 1. Overview
- 2. Normative references
- 3. Definitions, symbols, acronyms, and abbreviations
- 4. Radiated and conducted emissions test methodology
- 4.1 Test facilities and equipment
- 4.2 Test configurations and setup
- 4.3 Transmitted power and monitoring threshold limits
- 4.4 Limits for radiated and conducted tests
- 4.5 Conducted measurements of products with identical collocated transmitting and monitoring antennas
- 4.6 Conducted measurements of products with collocated transmitting and monitoring antennas of different types
- 4.7 Conducted measurements of products with arbitrarily placed transmitting and monitoring antennas
- 4.8 Radiated measurements of products with identical collocated transmitting and monitoring antennas
- 4.9 Radiated measurements of products with collocated transmitting and monitoring antennas of different types
- 4.10 Radiated measurements of products with arbitrarily placed transmitting and monitoring antennas
- 4.11 Manufacturer’s declarations and descriptions
- 5. Measurement instrumentation
- 6. RF measurements
- 7. Monitoring tests
- 8. Time and spectrum window access procedure
- 9. Test report
- 9.1 Test report contents
- 9.2 Applicable standards
- 9.3 Equipment units tested
- 9.4 Test configuration
- 9.5 List of test equipment
- 9.6 Units of measurement
- 9.7 Location of test site
- 9.8 Measurement procedures
- 9.9 Reporting measurement data
- 9.10 General and special conditions
- 9.11 Summary of results
- 9.12 Required signatures
- 9.13 Test report appendixes
- 9.14 Test report disposition
- Annex A (informative) 47CFR15, Subpart D—Rules and test cases for UPCS devices
- Annex B (informative) Radiated and conducted measurement of power output and monitoring thresholds
- Annex C (informative) Options for implementing the tests of Clause 7 and Clause 8
ANSI C63.17-2006
Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices
reliable communication between the EUT and the companion device. Tests should be performed at the
manufacturer’s recommended normal operating temperature and voltage, unless otherwise specified.
The EUT may be configured using administrative commands to use a fixed channel during the tests.
6.2.1
Table 6
Carrier-frequency stability
A demodulating spectrum analyzer, modulation analyzer, or frequency- and time-interval analyzer is
configured as follows in Table 6 for carrier-frequency measurement:
—Measurement system configuration for carrier-frequency stability test
Y axis Frequency
Center frequency Nominal carrier center frequency
Frequency span
Span large enough so that the full waveform is greater than
50% but less than 100% of the display scale
X axis Time
Time setting
Approximate transmit burst period, or 1 s for continuous
transmissions
Trigger RF envelope for pulsed systems; otherwise, frequency value
Measure the mean carrier frequency with minimum latency time between measurements.
Each mean carrier-frequency measurement is to be taken over a sample of EUT transmit signal
encompassing at least 5000 transmitted bits but less than or equal to the number of bits transmitted in 1 s.
For systems transmitting less than 5000 bits/s, the mean carrier-frequency measurement is to be taken over
the number of bits transmitted in 1 s.
Alternatively, the mean frequency can be obtained using a frequency counter with gating time set at
5000 bit periods.
For systems incorporating a data bias (the number of positive frequency-shift and negative frequency-shift
symbols are not equal over time), provisions for deriving the carrier-frequency by means of removing the
modulation may be incorporated in the test.
6.2.1.1
6.2.1.2
Carrier-frequency stability over time
The mean value of the carrier frequency of the EUT should be recorded at least once every second for a
total of greater than 3000 readings, or as rapidly as the measurement instrumentation permits over at least
1 h period of time, or over the interval for channel access monitoring, whichever is shorter. It may be
necessary to use a controller to log the measurements if the analyzer does not have that capability.
The EUT passes if the maximum and minimum sample measurements of the mean carrier frequency differ
from the average of the mean carrier-frequency sample measurements by 10 parts per million (ppm) or less.
Carrier-frequency stability over power supply voltage
In accordance with 47CFR15.323(f), this test does not apply to an EUT that is capable only of operating
from a battery. For a mains-powered EUT, the mean value of the carrier frequency shall be measured at the
power supply voltage extremes of row 1 of Table 7.
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