AX5043 Use in Compliance with ETSI EN 300 220-1

APPLICATION NOTE AND9315/D
AX5043
Use in Compliance with ETSI
EN 300 220-1
Revision 2
2
Table of Contents
1. General ....................................................................................................... 4
Frequency Error ETSI EN 300 220-1 V2.3.1 (2010-02), Sub-clause 7.1 ................ 4
2. Wireless M-Bus T Mode Transmitter (868 MHz wide band, 100 kbps) ......... 5
2.1. Setup ........................................................................................................... 5
2.2. Regulatory Requirements ............................................................................... 6
2.3. Measurements............................................................................................... 6
Output Power ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2 ..................... 6
Modulation Bandwidth EN 300 220-1 V2.3.1 (2010-02), Subclause 7.7 ................. 7
Unwanted Emissions in Spurious Domains EN 300 220-1 V2.3.1 (2010-02),
Subclause 7.8 ............................................................................................... 10
3. Wireless M-Bus S Mode Transmitter (868 MHz wide band, 32.768 kbps) .. 12
3.1. Setup .......................................................................................................... 12
3.2. Regulatory Requirements .............................................................................. 13
3.3. Measurements.............................................................................................. 13
Output Power ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2 .................... 13
Modulation Bandwidth EN 300 220-1 V2.3.1 (2010-02), Subclause 7.7 ................ 14
Unwanted Emissions in Spurious Domains EN 300 220-1 V2.3.1 (2010-02),
Subclause 7.8 ............................................................................................... 16
4. 169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps ...................... 17
4.1. Setup .......................................................................................................... 17
4.2. Regulatory Requirements .............................................................................. 18
4.3. Measurements.............................................................................................. 18
Output Power ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2 .................... 18
Adjacent Channel Power EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6 ............. 19
Unwanted Emissions in Spurious Domains EN 300 220-1 V2.3.1 (2010-02),
Subclause 7.8 ............................................................................................... 20
5. 169 MHz narrow band, 25 kHz channel spacing, 9.6 kbps ......................... 25
5.1. Setup .......................................................................................................... 25
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AND9315/D
Table of Contents
5.2. Regulatory Requirements .............................................................................. 25
5.3. Measurements.............................................................................................. 25
Output Power ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2 .................... 25
Adjacent Channel Power EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6 ............. 26
Unwanted Emissions in Spurious Domains EN 300 220-1 V2.3.1 (2010-02),
Subclause 7.8 ............................................................................................... 27
6. 433 MHz wide band, 100 kbps .................................................................. 28
6.1. Setup .......................................................................................................... 28
6.2. Regulatory Requirements .............................................................................. 29
6.3. Measurements.............................................................................................. 29
Output Power ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2 .................... 29
Modulation Bandwidth EN 300 220-1 V2.3.1 (2010-02), Subclause 7.7 ................ 30
Unwanted Emissions in Spurious Domains EN 300 220-1 V2.3.1 (2010-02),
Subclause 7.8 ............................................................................................... 33
7. 433 MHz narrow band, 25 kHz channel spacing, 9.6 kbps ......................... 36
7.1. Setup .......................................................................................................... 36
7.2. Regulatory Requirements .............................................................................. 37
7.3. Measurements.............................................................................................. 37
Output Power ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2 .................... 37
Adjacent Channel Power EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6 ............. 38
Unwanted Emissions in Spurious Domains EN 300 220-1 V2.3.1 (2010-02),
Subclause 7.8 ............................................................................................... 39
8. 868 MHz narrow band, 25 kHz channel spacing, 9.6 kbps ......................... 40
8.1. Setup .......................................................................................................... 40
8.2. Regulatory Requirements .............................................................................. 41
8.3. Measurements.............................................................................................. 41
Output Power ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2 .................... 41
Adjacent Channel Power EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6 ............. 42
Unwanted Emissions in Spurious Domains EN 300 220-1 V2.3.1 (2010-02),
Subclause 7.8 ............................................................................................... 43
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AND9315/D
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4
General
1.
General
Frequency Error
ETSI EN 300 220-1 V2.3.1 (2010-02), Sub-clause 7.1
The frequency error of the AX5043 is given by the frequency error of the frequency
source XTAL or TCXO.
ETSI EN 300 220-1 requirements are
+/- 100 ppm for 868 MHz wide band systems,
+/- 14.4 ppm for 868 MHz narrow band systems,
+/- 27 ppm for 433 MHz narrow band systems,
+/- 59 ppm for 169 MHZ narrow band systems.
Narrow band refers to channel widths smaller  25 kHz.
EN 13 757-4 2005 which applies for wireless M-Bus devices, requires stricter frequency
errors. 60 or 25 ppm for the center frequency.
Although this is achievable with normal crystals, we do recommend use of a TCXO for
optimal performance in narrow band systems.
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AND9315/D
Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
2.
Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
2.1. Setup
Module
AX5043 DVK-1 with 48 MHz XTAL
Differential antenna interface
Internal VCO & internal synthesizer loop
filter
Measurement equipment
0.5 m RG-58 cable from SMA to R&S FSEB
spectrum analyzer (note 1)
Mainboard and debug adapter
DVK-2
Setup software
AX-RadioLab V1.1
Carrier Frequency
868.3 MHz
Bit rate
100 kbps
Modulation
GFSK BT=0.3
FSK half deviation
50 kHz
Changes to setup software default register
settings
AX5043_PLLCPI_(TX) = 0x01
AX5043_PLLVCOI _(TX) = 0x87
AX5043_0xF00_(TX) = 0x4F
AX5043_REF_(TX) = 0x02
Changes to hardware default configuration
Short between pins L2 and L1
48 MHz XTAL
Power level for which module meets ETSI
EN 300 220-1 V2.3.1 (2010-02)
14.45 dBm
Notes:
1. Values presented are the spectrum analyzer readings. Cable losses are not
compensated
2. Unless otherwise stated spectrum analyzer settings are:


detector function: RMS
trace: clear/write
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AND9315/D
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Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
2.2. Regulatory Requirements
ETSI EN 300 220-1 V2.3.1 (2010-02) in frequency band 868.0 - 868.6 MHz.
2.3. Measurements
Output Power
ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2
AX5043 is outputting CW for this measurement. The ETSI limit for the 868.0 – 868.6
MHz band is 25 mW (14 dBm). Measured output power is 14.45 dBm, all the following
measurements are done at this power level.
Figure 1: Transmit spectrum, 868.3 MHz, CW
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AND9315/D
Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
Modulation Bandwidth
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.7
The following three plots show the modulated output at different resolution bandwidths
with the corresponding ETSI limit lines.
Spectrum analyzer settings for all three measurements are:


detector function: max peak
trace: max hold
Figure 2: Transmit spectrum, 868.3 MHz, GFSK BT=0.3, 100 kbps, 50 kHz half deviation,
RBW=1 kHz, detector max peak, trace max hold
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AND9315/D
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Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
Figure 3: Transmit spectrum, 868.3 MHz, GFSK BT=0.3, 100 kbps, 50 kHz half deviation,
RBW=10 kHz, detector max peak, trace max hold
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AND9315/D
Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
Figure 4: Transmit spectrum, 868.3 MHz, GFSK BT=0.3, 100 kbps, 50 kHz half deviation,
RBW=100 kHz, detector max peak, trace max hold
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AND9315/D
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Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
Unwanted Emissions in Spurious Domains
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.8
Unwanted emissions are shown for the most critical cases.
470 – 862 MHZ
From 470 – 862 MHz the ETSI limit is –54 dBm for an RBW of 100 kHz. The highest
measured spur is at –58 dBm
Figure 5: Spurious emission 470 – 862 MHz
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AND9315/D
Wireless M-Bus T Mode Transmitter
(868 MHz wide band, 100 kbps)
HARMONICS
Above 1 GHz the ETSI limit is –30 dBm for an RBW of 1 MHz. Here the harmonics of the
wanted signal are most critical.
Spectrum analyzer settings for this measurement are:


detector function: max peak
trace: max hold
Figure 6: Spurious emission above 1 GHz, detector max peak, trace max hold
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AND9315/D
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Wireless M-Bus S Mode Transmitter
(868 MHz wide band, 32.768 kbps)
3.
Wireless M-Bus S Mode Transmitter
(868 MHz wide band, 32.768 kbps)
3.1. Setup
Module
AX5043 DVK-1 Module with 48 MHz XTAL
Differential antenna interface
Internal VCO & internal synthesizer loop
filter
Measurement equipment
0.5 m RG-58 cable from SMA to R&S FSEB
spectrum analyzer (note 1)
Mainboard and debug adapter
DVK-2
Setup software
AX-RadioLab V1.1
Carrier Frequency
868.3 MHz
Bit rate
32.768 kbps
Modulation
GFSK BT=0.5
FSK half deviation
50 kHz
Changes to setup software default register
settings
AX5043_PLLCPI_(TX) = 0x01
AX5043_PLLVCOI _(TX) = 0x87
AX5043_0xF00_(TX) = 0x4F
AX5043_REF_(TX) = 0x02
Changes to hardware default configuration
Short between pins L2 and L1
48 MHz XTAL
Power level for which module meets ETSI
EN 300 220-1 V2.3.1 (2010-02)
14.45 dBm
Notes:
1. Values presented are the spectrum analyzer readings. Cable losses are not
compensated
2. Unless otherwise stated spectrum analyzer settings are:


detector function: RMS
trace: clear/write
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AND9315/D
Wireless M-Bus S Mode Transmitter
(868 MHz wide band, 32.768 kbps)
3.2. Regulatory Requirements
ETSI EN 300 220-1 V2.3.1 (2010-02) in frequency band 868.0 - 868.6 MHz.
3.3. Measurements
Output Power
ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2
For this measurement plot please see the equivalent section for 100 kbps instead of
32.768 kbps.
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AND9315/D
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Wireless M-Bus S Mode Transmitter
(868 MHz wide band, 32.768 kbps)
Modulation Bandwidth
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.7
The following three plots show the modulated output at different resolution bandwidths
with the corresponding ETSI limit lines.
Spectrum analyzer settings for all three measurements are:


detector function: max peak
trace: max hold
Figure 7: Transmit spectrum, 868.3 MHz, GFSK BT=0.5, 32.768 kbps, 50 kHz half deviation,
RBW=1 kHz, detector max peak, trace max hold
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AND9315/D
Wireless M-Bus S Mode Transmitter
(868 MHz wide band, 32.768 kbps)
Figure 8: Transmit spectrum, 868.3 MHz, GFSK BT=0.5, 32.768 kbps, 50 kHz half deviation,
RBW=10 kHz, detector max peak, trace max hold
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AND9315/D
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Wireless M-Bus S Mode Transmitter
(868 MHz wide band, 32.768 kbps)
Figure 9: Transmit spectrum, 868.3 MHz, GFSK BT=0.5, 32.768 kbps, 50 kHz half deviation,
RBW=100 kHz, detector max peak, trace max hold
Unwanted Emissions in Spurious Domains
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.8
For these measurement plots please see the equivalent section for 100 kbps instead of
32.768 kbps.
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AND9315/D
169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
4.
169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
4.1. Setup
Module
AX5043 DVK-2 Module with 16 MHz TCXO
Differential antenna interface
Internal VCO with external inductor &
internal synthesizer loop filter
Measurement equipment
0.5 m RG-58 cable from SMA to R&S FSEB
spectrum analyzer (note 1)
Mainboard and debug adapter
DVK-2
Setup software
AX-RadioLab V1.1
Carrier Frequency
169.438 MHz
Bit rate
4.8 kbps
Modulation
GFSK BT=0.3
FSK half deviation
1.6 kHz
Channel
12.5 kHz spacing, 8.5 kHz width
Changes to setup software default register
settings
AX5043_PLLCPI_(TX) = 0x08
Changes to hardware default configuration
none
Power level for which module meets ETSI
EN 300 220-1 V2.3.1 (2010-02)
15.45 dBm
AX5043_PLLVCOI_(TX) = 0x88
Notes:
1. Values presented are the spectrum analyzer readings. Cable losses are not
compensated
2. Unless otherwise stated spectrum analyzer settings are:


detector function: RMS
trace: clear/write
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AND9315/D
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169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
4.2. Regulatory Requirements
ETSI EN 300 220-1 V2.3.1 (2010-02) in frequency band 169.4 – 169.475 MHz.
4.3. Measurements
Output Power
ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2
AX5043 is outputting modulated data in the following plot. The ETSI limit for the 169.4
– 169.475 MHz band is 500 mW (27 dBm). AX5043 outputs just over 15.45 dBm. All
the following measurements are done at this power level.
Figure 10: Transmit spectrum, 169.4 MHz, 4.8 kbps, GFSK BT=0.3
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AND9315/D
169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
Adjacent Channel Power
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6
The following plots show the modulated spectrum with measurements of adjacent
channel power in channels of 16 kHz width and with 25 kHz spacing. The ETSI limit for
adjacent channel power is 200nW (-37 dBm). The measurement for AX5043 is –46
dBm.
Figure 11: Transmit spectrum, 169.438 MHz, GFSK BT=0.3, 4.8 kbps, 1.6 kHz half deviation with
adjacent channel power measurement for 12.5 kHz spaced channels
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AND9315/D
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169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
Unwanted Emissions in Spurious Domains
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.8
Unwanted emissions are shown for the most critical cases.
From 174 – 230 MHz and 470 – 862 MHz the ETSI limit is –54 dBm for an RBW of 100
kHz. These frequency ranges are both shown, especially as several harmonics of 169.4
MHz fall into these frequency ranges.
For all other frequencies from 174 MHz to 1 GHz the ETSI limit is –36 dBm for an RBW of
100 kHz. This limit is valid up to a distance of 2.5 times the channel bandwidth to the
carrier (adjacent and alternate channels are excepted). These frequency ranges are
shown if they contain significant harmonics or other spurs. A measurement close to the
carrier is also shown, as this is one of the most critical areas.
Above 1 GHz the ETSI limit is –30 dBm for an RBW of 1 MHz. No plot of this area is
shown, as all spurs are far away from the limit.
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AND9315/D
169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
CLOSE TO 169.438 MHZ
The following plot shows a power measurement of a 100 kHz bandwidth just beside the
adjacent channel (center of measurement is at 81.25 kHz from the carrier). These are
measurements “ALT2 Up” and “ALT2 Low”. Please note that the other channel power
measurements plotted are irrelevant in an ETSI context.
The ETSI limits are –36 dBm. The measurement for AX5043 is –37 dBm.
Figure 12: Transmit spectrum, 169.438 MHz, GFSK BT=0.3, 4.8 kbps, 1.6 kHz half deviation with
measurement in 100 kHz bandwidth beside the alternate channel (clause 7.8.2.1)
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AND9315/D
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169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
174 – 230 MHZ
Spurious emission in this frequency range is below the ETSI limit of –54 dBm. The
highest spur at –57 dBm is at a distance of the reference frequency (16 MHz) from the
carrier.
Figure 13: Spurious emission 174 – 230 MHz
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AND9315/D
169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
230 – 470 MHZ
Spurious emission in this frequency range is below the ETSI limit of –36 dBm. The
highest spur at –39 dBm is a harmonic of the carrier frequency.
Spectrum analyzer setting for this measurement is:

detector function: max peak
Figure 14: Spurious emission 230 – 470 MHz, detector function max peak
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AND9315/D
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169 MHz narrow band, 12.5 kHz channel spacing, 4.8 kbps
470 – 862 MHZ
Spurious emission in this frequency range is below the ETSI limit of –54 dBm. The
highest spur at –59 dBm is a harmonic of the carrier frequency
Figure 15: Spurious emission 470 – 862 MHz
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AND9315/D
169 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
5.
169 MHz narrow band, 25 kHz channel s pacing, 9.6 kbps
5.1. Setup
Module
AX5043 DVK-2 Module with 16 MHz TCXO
Differential antenna interface
Internal VCO with external inductor &
internal synthesizer loop filter
Measurement equipment
0.5 m RG-58 cable from SMA to R&S FSEB
spectrum analyzer (note 1)
Mainboard and debug adapter
DVK-2
Setup software
AX-RadioLab V1.1
Carrier Frequency
169.438 MHz
Bit rate
9.6 kbps
Modulation
GFSK BT=0.3
FSK half deviation
3.2 kHz
Channel
25 kHz spacing, 16 kHz width
Changes to setup software default register
settings
AX5043_PLLCPI_(TX) = 0x08
Changes to hardware default configuration
none
Power level for which module meets ETSI
EN 300 220-1 V2.3.1 (2010-02)
15.45 dBm
AX5043_PLLVCOI_(TX) = 0x88
Notes:
1. Values presented are the spectrum analyzer readings. Cable losses are not
compensated
2. Unless otherwise stated spectrum analyzer settings are:


detector function: RMS
trace: clear/write
5.2. Regulatory Requirements
ETSI EN 300 220-1 V2.3.1 (2010-02) in frequency band 169.4 – 169.475 MHz.
5.3. Measurements
Output Power
ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2
For this measurement plot please see the equivalent section for 12.5 kHz channels
instead of 25 kHz channels.
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AND9315/D
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169 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
Adjacent Channel Power
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6
The following plots show the modulated spectrum with measurements of adjacent
channel power in channels of 16 kHz width and with 25 kHz spacing. The ETSI limit for
adjacent channel power is 200 nW (-37 dBm). The measurement for AX5043 is –45
dBm.
Figure 16: Transmit spectrum, 169.438 MHz, GFSK BT=0.3, 9.6 kbps, 3.2 kHz half deviation with
adjacent channel power measurement for 25 kHz spaced channels
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AND9315/D
169 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
Unwanted Emissions in Spurious Domains
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.8
Emission spectra for the 25 kHz spaced channels do not differ from those for the 12.5
kHz spaced channel case, except close to 169.4 MHz. This case is shown in the next
section. For all others see the equivalent section for 12.5 kHz channels instead of 25 kHz
channels.
CLOSE TO 169.438 MHZ
The following plot shows a power measurement of a 100 kHz bandwidth just beside the
adjacent channel (center of measurement is at 112.5 kHz from the carrier). These are
measurements “ALT2 Up” and “ALT2 Low”. Please note that the other channel power
measurements plotted are irrelevant in an ETSI context. The ETSI limits are –36 dBm.
The measurement for AX5043 is – 37 dBm.
Figure 17: Transmit spectrum, 169.438 MHz, GFSK BT=0.3, 9.6 kbps, 3.2 kHz half deviation with
measurement in 100 kHz bandwidth beside the alternate channel (clause 7.8.2.1)
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AND9315/D
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433 MHz wide band, 100 kbps
6.
433 MHz wide band, 100 kbps
6.1. Setup
Module
AX5043 DVK-1 Module with 48 MHz XTAL
Differential antenna interface
Internal VCO & internal synthesizer loop
filter
Measurement equipment
0.5 m RG-58 cable from SMA to R&S FSEB
spectrum analyzer (note 1)
Mainboard and debug adapter
DVK-2
Setup software
AX-RadioLab V1.1
Carrier Frequency
433.77 MHz
Bit rate
100 kbps
Modulation
GFSK BT=0.5
FSK half deviation
25 kHz
Changes to setup software default register
settings
AX5043_PLLCPI_(TX) = 0x02
AX5043_PLLVCOI _(TX) = 0x87
AX5043_0xF00_(TX) = 0x4F
AX5043_REF_(TX) = 0x02
Changes to hardware default configuration
Short between pins L2 and L1
48 MHz XTAL
Power level for which module meets ETSI
EN 300 220-1 V2.3.1 (2010-02)
14.9 dBm
Notes:
1. Values presented are the spectrum analyzer readings. Cable losses are not
compensated
2. Unless otherwise stated spectrum analyzer settings are:


detector function: RMS
trace: clear/write
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AND9315/D
433 MHz wide band, 100 kbps
6.2. Regulatory Requirements
ETSI EN 300 220-1 V2.3.1 (2010-02) in frequency band 433.05 – 434.79 MHz.
6.3. Measurements
Output Power
ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2
AX5043 is outputting CW for this measurement. The ETSI limit for the 433.05 – 434.79
MHz band is 10 mW (10 dBm). Even though the measured 14.9 dBm are over the ETSI
limit, the following measurements were done at this power level.
Figure 18: Transmit spectrum, 433.77 MHz, CW
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AND9315/D
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433 MHz wide band, 100 kbps
Modulation Bandwidth
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.7
The following three plots show the modulated output at different resolution bandwidths
with the corresponding ETSI limit lines.
Spectrum analyzer settings for all three measurements are:


detector function: max peak
trace: max hold
Figure 19: Transmit spectrum, 433.77 MHz, GFSK BT=0.5, 100 kbps, 25 kHz half deviation,
RBW=1 kHz, ETSI limit lines, detector max peak, trace max hold
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AND9315/D
433 MHz wide band, 100 kbps
Figure 20: Transmit spectrum, 433.77 MHz, GFSK BT=0.5, 100 kbps, 25 kHz half deviation,
RBW=10 kHz, ETSI limit lines, detector max peak, trace max hold
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AND9315/D
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433 MHz wide band, 100 kbps
Figure 21: Transmit spectrum, 433.77 MHz, GFSK BT=0.5, 100 kbps, 25 kHz half deviation,
RBW=100 kHz, ETSI limit lines, detector max peak, trace max hold
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AND9315/D
433 MHz wide band, 100 kbps
Unwanted Emissions in Spurious Domains
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.8
Unwanted emissions are shown for the most critical cases.
From 470 – 862 MHz the ETSI limit is –54 dBm for an RBW of 100 kHz. From 862 MHz to
1 GHz the ETSI limit is –36 dBm for an RBW of 100 kHz.
Above 1 GHz the ETSI limit is –30 dBm for an RBW of 1 MHz. Here the harmonics of the
wanted signal are most critical.
470 – 862 MHZ
Spurious emission in this frequency range is below the ETSI limit of –54 dBm. The
highest spur is at –62 dBm.
Figure 22: Spurious emission 470 – 862 MHz
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AND9315/D
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433 MHz wide band, 100 kbps
HARMONICS
The second harmonic at 867 MHz is on the ETSI limit of –36 dBm. Harmonics above 1
GHz are well below the ETSI limit of –30 dBm.
Spectrum analyzer settings for this measurement is:

detector function: max peak
Figure 23: Spurious emission 862 MHz – 1 GHz, detector function max peak
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AND9315/D
433 MHz wide band, 100 kbps
Figure 24: Spurious emission above 1 GHz
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AND9315/D
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433 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
7.
433 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
7.1. Setup
Module
AX5043 DVK-1 Module with 48 MHz XTAL
Differential antenna interface
Internal VCO & internal synthesizer loop
filter
Measurement equipment
0.5 m RG-58 cable from SMA to R&S FSEB
spectrum analyzer (note 1)
Mainboard and debug adapter
DVK-2
Setup software
AX-RadioLab V1.1
Carrier Frequency
434.415 MHz
Bit rate
9.6 kbps
Modulation
GFSK BT=0.3
FSK half deviation
3.2 kHz
Channel
25 kHz spacing, 16 kHz width
Changes to setup software default register
settings
AX5043_PLLLOOP_(TX) = 0x0B
AX5043_PLLCPI_(TX) = 0x08
AX5043_PLLVCOI _(TX) = 0x87
AX5043_0xF00_(TX) = 0x4F
AX5043_REF_(TX) = 0x02
Changes to hardware default configuration
Short between pins L2 and L1
48 MHz XTAL
Power level for which module meets ETSI
EN 300 220-1 V2.3.1 (2010-02)
14.75 dBm
Notes:
1. Values presented are the spectrum analyzer readings. Cable losses are not
compensated
2. Unless otherwise stated spectrum analyzer settings are:


detector function: RMS
trace: clear/write
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AND9315/D
433 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
7.2. Regulatory Requirements
ETSI EN 300 220-1 V2.3.1 (2010-02) in frequency band 434.040 – 434.790 MHz.
7.3. Measurements
Output Power
ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2
AX5043 is outputting modulated data in the following plot. The ETSI limit for the
434.040 – 434.790 MHz band is 10 mW (10 dBm). AX5043 outputs 14.75 dBm. All the
following measurements were done at this power setting.
Figure 25: Transmit spectrum, 434.415 MHz, 9.6 kbps, GFSK BT=0.3
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433 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
Adjacent Channel Power
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6
The following plots shows the modulated spectrum. Adjacent channel power is measured
in channels of 16 kHz width and with 25 kHz spacing. The ETSI limit for adjacent channel
power is 200 nW (-37 dBm). The measurement for AX5043 is –51.8 dBm.
Figure 26: Transmit spectrum, 434.415 MHz, GFSK BT=0.3, 9.6 kbps, 3.2 kHz half deviation with
adjacent channel power measurement for 25 kHz spaced channels
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AND9315/D
433 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
Unwanted Emissions in Spurious Domains
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.8
Unwanted emissions are only shown in the following for the most critical area, which is
close to the 434.415 MHz carrier frequency. The other spurious emission measurements
are not significantly different from the 433 MHz wide-band case.
CLOSE TO 434.415 MHZ
The following plot shows a power measurement of a 100 kHz bandwidth just beside the
adjacent channel (center of measurement is at 112.5 kHz from the carrier). These are
measurements “ALT2 Up” and “ALT2 Low”. Please note that the other channel power
measurements plotted are irrelevant in an ETSI context. The ETSI limits are –36 dBm.
The measurement for AX5043 is below –37 dBm.
Figure 27: Transmit spectrum, 434.415 MHz, GFSK BT=0.3, 9.6 kbps, 3.2 kHz half deviation with
measurement in 100 kHz bandwidth beside the alternate channel (clause 7.8.2.1)
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868 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
8.
868 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
8.1. Setup
Module
AX5043 DVK-1 Module with 48 MHz XTAL
Differential antenna interface
Internal VCO & combined internal/external
synthesizer loop filter
Measurement equipment
0.5 m RG-58 cable from SMA to R&S FSEB
spectrum analyzer (note 1)
Mainboard and debug adapter
DVK-2
Setup software
AX-RadioLab V1.0c
Carrier Frequency
868.3 MHz
Bit rate
9.6 kbps
Modulation
GFSK BT=0.3
FSK half deviation
3.2 kHz
Channel
25 kHz spacing, 16 kHz width
Changes to setup software default register
settings
AX5043_0xF10 = 0x0F
AX5043_PLLLOOP_(TX) = 0x07
AX5043_PLLCPI_(TX) = 0x08
AX5043_PLLVCOI_(TX) = 0x87
AX5043_0xF00_(TX) = 0x4F
AX5043_REF_(TX) = 0x02
Changes to hardware default configuration
Short between pins L2 and L1
48 MHz XTAL
39 pF between pin FILT and GND
Power level for which module meets ETSI
EN 300 220-1 V2.3.1 (2010-02)
13.44 dBm
Notes:
1. Values presented are the spectrum analyzer readings. Cable losses are not
compensated
2. Unless otherwise stated spectrum analyzer settings are:


detector function: RMS
trace: clear/write
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868 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
8.2. Regulatory Requirements
ETSI EN 300 220-1 V2.3.1 (2010-02) in frequency band 868.0 – 868.6 MHz or 868.6 –
868.7 MHz.
8.3. Measurements
Output Power
ETSI EN 300 220-1 V2.3.1 (2010-02), Subclause 7.2
AX5043 is outputting modulated data in the following plot. The ETSI limit for the 868.0
– 868.6 MHz band is 25 mW (14 dBm), for the 868.6 – 868.7 MHz band it is 10 mW (10
dBm). AX5043 outputs 13.44 dBm. All the following measurements were done at this
power.
Figure 28: Transmit spectrum, 868.3 MHz, 9.6 kbps, GFSK BT=0.3
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868 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
Adjacent Channel Power
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.6
The following plots show the modulated spectrum with measurements of adjacent
channel power in channels of 16 kHz width and with 25 kHz spacing. The ETSI limit for
adjacent channel power is 200nW (-37 dBm). The measurement for AX5043 is below –
44 dBm.
Figure 29: Transmit spectrum, 868.3 MHz, GFSK BT=0.3, 9.6 kbps, 3.2 kHz half deviation with
adjacent channel power measurement for 25 kHz spaced channels
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868 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
Unwanted Emissions in Spurious Domains
EN 300 220-1 V2.3.1 (2010-02), Subclause 7.8
Spurious emission is shown close to the 868.3 MHz carrier frequency and for the 470 –
862 MHz frequency range. For other frequency ranges, see the section on 868.3 MHz
wide band performance as well as the plot in this section shown for power measurement
(subclause 7.2).
CLOSE TO 868.3 MHZ
The following plot shows a power measurement of a 100 kHz bandwidth just beside the
adjacent channel (center of measurement is at 112.5 kHz from the carrier). These are
measurements “ALT2 Up” and “ALT2 Low”. Please note that the other channel power
measurements plotted are irrelevant in an ETSI context. The ETSI limits are –36 dBm.
The measurement for AX5043 is below –37 dBm.
Figure 30: Transmit spectrum, 868.3 MHz, GFSK BT=0.3, 9.6 kbps, 3.2 kHz half deviation with
measurement in 100 kHz bandwidth beside the alternate channel (clause 7.8.2.1)
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868 MHz narrow band, 25 kHz channel spacing, 9.6 kbps
470 – 862 MHZ
From 470 – 862 MHz the ETSI limit is –54 dBm for an RBW of 100 kHz. The
measurement for AX5043 is below –56 dBm. The most critical frequency is at the edge
of the frequency range closest to the carrier frequency.
Figure 31: Spurious emission 470 – 862 MHz
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