Download CYBLE-022001-00 Conducted Pre-Compliance Tests.pdf

CYBLE-022001-00 – Conducted Pre-Compliance tests – FCC/IC and ETSI
Summary
The CYBLE-022001-00 module passes all the requirements stated in the relevant
sections of both FCC Part 15, IC (RSS210 Issue 8) and ETSI EN-300-328. The
detailed list of all conducted tests, regulatory limits and the results are
documented below.
Test Setup
The internal pre-compliance tests are done in a conducted setup. For making a
conducted setup, components C11 and L2 (antenna matching network) are
removed from the module and a coaxial cable is connected on the radio side pad
of L2 (highlighted in red in the following picture). Before performing the tests, the
attenuation caused by the open ended cable and coaxial cable are measured and
the attenuation value is compensated in the CBT scripts for all the tests done.
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List of tests done
FCC/IC treats BLE as a Digital Transmission System. All the tests are done as per
FCC guidance for Performing Compliance Measurements on Digital Transmission
Systems (DTS). The following is the list of tests done for FCC Part-15 and IC
(RSS210 Issue 8):
1.
2.
3.
4.
5.
6.
DTS bandwidth
Transmission Duty Cycle
Fundamental emission output power
Maximum power spectral density level in the fundamental emission
Out of Band Spurious Measurements
Band Edge Measurements
For ETSI, Bluetooth SIG considers BLE as Equipment using other types of wide
band modulation (e.g. DSSS, OFDM, etc.). The following tests are covered for the
ETSI (EN 300-328):
1. RF output power
2. Power Spectral Density
3. Occupied Channel Bandwidth
4. Transmitter unwanted emissions in the out-of-band domain
5. Transmitter unwanted emissions in the spurious domain
6. Receiver spurious emissions
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FCC test results
DTS Bandwidth:
Measurement was done based on option 2 of FCC guidance.
FCC limit DTS bandwidth
DTS Bandwidth Measurement
: > 500 KHz
: 736.1 KHz
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Transmission Duty Cycle
Zero RBW mode was chosen to calculate the transmission duty cycle. Based on
the following pictures,
On time
Total time
Duty cycle
Correction factor
=
=
=
=
390 uS
626 uS
62.3%
2.06 dB
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Fundamental emission output power
AVGSA-2 method mentioned in FCC guidance for DTS measurement is used to
measure the transmit power level.
Test
Condition
FCC limit
(dBm)
Channel 0, 0 30
dBm
Channel 19, 0 30
dBm
Channel 39, 0 30
dBm
Measuremen
t (dBm)
Margin
-1.5
Duty Cycle Final
Correction Value
Factor
2.06
0.56
-1.53
2.06
0.53
29.47
-1.78
2.06
0.28
29.72
TX Power @ Channel 0
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29.44
TX Power @ Channel 19
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TX Power @ 39
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Maximum power spectral density level in the fundamental emission
Method AVGPSD-2 in FCC guidance for DTS measurement is used to measure
power spectral density.
FCC limit
Measurement Duty Cycle
(dBm/3KHz) (dBm)
Correction
Factor
8
-19.84
2.06
Final
Value
Margin
-17.78
25.78
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Out of Band Spurious Measurements:
Spurious at frequencies < 1 GHz:
The following table lists the major spurious frequency component at each
fundamental frequency
Channel
0
19
39
Spurious
Frequency
(MHz)
943.9
956.3
956.3
Limits
(dBm)
-49.19
-49.19
-49.19
Spurious
power
measurement
-73.17
-73.32
-74.58
Spurious @ Channel 0
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Margin
23.98
24.13
25.39
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Spurious @ Channel 19
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Spurious @ Channel 39
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Spurious at frequencies > 1 GHz:
Channel
0
0
19
39
Spurious Limits
Spurious
Frequency (average) power
(MHz)
(dBm)
measurement
(peak)(dBm)
4804
-41.23
-43.22
7205
-41.23
-57.17
4880
-41.23
-42.95
4958
-41.23
-42.74
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Margin
1.99
15.94
1.72
1.51
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Band Edge Tests:
Transmit
Frequency
(MHz)
Band Edge
Frequency
(MHz)
2402
2480
2400
2483.5
Measured
Power w.r.t
carrier
(dBc)
-33.31
-39.28
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Limit
(dBc)
Margin
(dB)
-20
-20
13.31
19.28
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ETSI test results
RF output power:
Frequency
(MHz)
2402
2440
2480
Output
power (dBm)
0.63
0.63
0.44
Antenna
Gain(dBi)
0.5
0.5
0.5
EIRP(dBm)
Limits (dBm)
Margin (dB)
1.13
1.13
0.94
20
20
20
18.87
18.87
19.06
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Power Spectral Density
Frequency
(MHz)
2402
2440
2480
PSD
Measured
(dBm/MHz)
3.50
3.72
3.70
Correction
Factor(dB)
PSD Final
(dBm)
Limits
(dBm/MHz)
Margin
(dB)
2.93
3.19
3.20
0.57
0.53
0.5
10
10
10
9.43
9.47
9.5
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Occupied Bandwidth:
Channel
0
39
Occupied bandwidth(MHz)
1.05
1.04
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Transmitter unwanted emissions in the out-of-band domain
Spurious Band
2483.5 + BW
2483.5 + 2BW
2400 – BW
2400 – 2BW
Spurious power
(dBm)
-49.921
-52.258
-43.401
-47.103
Limit (dBm)
Margin (dB)
-10
-20
-10
-20
39.921
32.258
33.401
27.103
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Transmitter unwanted emissions in the spurious domain
TX Frequency Spurious
Spurious
Limits (dBm)
(MHz)
Frequency
power (dBm)
(MHz)
2402
944.78
-59.98
-36
2402
945.93
-61.12
-36
2402
955.88
-63.12
-36
2402
427.97
-72.24
-36
2480
944.28
-60.67
-36
2480
506.47
-70.07
-36
2480
945.93
-59.55
-36
2480
955.88
-63.31
-54
2402
4804.3
-45.92
-30
2402
7205.7
-38.58
-30
2480
4960.7
-45.44
-30
2480
7440.9
-41.6
-30
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Margin (dBm)
23.98
25.12
27.12
36.24
24.67
34.07
23.55
9.31
15.92
8.58
15.44
11.6
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Receiver spurious emissions
Rx Frequency Spurious
(MHz)
Frequency
(MHz)
2402
627.4
2402
944.18
2402
944.88
2402
946.03
2402
955.78
2480
944.23
2480
944.83
2480
945.98
2480
955.88
2402
4802.9
2402
5241.8
2480
2414.4
2480
4957.8
Spurious
power (dBm)
Limits (dBm)
Margin (dBm)
-74.97
-66.1
-66.66
-66.09
-64.02
-69.06
-65.3
-67.35
-63.17
-61.35
-61.97
-59.95
-61.65
-57
-57
-57
-57
-57
-57
-57
-57
-57
-47
-47
-47
-47
17.97
9.1
9.66
9.09
7.02
12.06
8.3
10.354
6.17
24.35
24.97
22.95
24.65
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END
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