FCC Technical Report: VEGAPULS Radar
FCC Technical Report: VEGAPULS Radar
BRA300
in
VEGAPULS 21
VEGAPULS 31
Test Laboratory:
7layers GmbH
Borsigstrasse 11
40880 Ratingen
Germany
Note:
The following test results relate only to the devices specified in this document. This report shall not be reproduced in parts
without the written approval of the test laboratory.
Commerzbank AG Account No. 303 016 000 Bank Code 300 400 00 IBAN DE81 3004 0000 0303 0160 00 Swift Code COBADEFF
Table of Contents
2 Revision History 8
3 Administrative Data 9
3.1 Testing Laboratory 9
3.2 Project Data 9
3.3 Applicant Data 9
3.4 Manufacturer Data 9
5 Test Results 13
5.1 Fundamental Bandwidth 13
5.2 Fundamental Emission 15
5.3 Unwanted Emissions 20
5.4 Antenna Beamwidth 30
5.5 Antenna Side Lobe Gain 35
5.6 Frequency Stability 37
6 Test Equipment 40
9 Measurement Uncertainties 56
10 Photo Report 57
Type of Authorization
Certification for an Intentional Radiator.
Prepared in accordance with the requirements of FCC Rules and Regulations as listed in 47 CFR
Ch.1 Parts 2 and 15 (10-1-18 Edition). The following subparts are applicable to the results in
this test report.
§ 15.256 Operation of level probing radars within the bands 5.925-7.250 GHz, 24.05-29.00
GHz, and 75-85 GHz
Note:
The tests were selected and performed with reference to the FCC Public Notice “Measurement
procedure for level probing radars, 890966 D01 Meas level Probing Radars v01r01”.
The EUT complied with all performed tests as listed in chapter 1.3 Measurement
Summary / Signatures.
Address: Borsigstr. 11
40880 Ratingen
Germany
Address:
Contact Person:
Kind of Device BRA300 are electronic modules used in VEGAPULS devices. The
product description electronic modules contain the main electronics of the devices and
a Bluetooth module with an antenna integrated on the PCB. The
Bluetooth interface is for communication with the device via
smartphone, tablet pc or laptop.
Product name VEGAPULS 11
VEGAPULS 21
VEGAPULS 31
Type -
Voltage Type DC
Voltage Level 24 V
Tested Modulation Type FMCW
General product The EUT is a Level Probing Radar including Bluetooth Low Energy.
description
The EUT provides the DC
following ports:
The main components of the EUT are listed and described in chapter 3.2 EUT Main
components.
NOTE:The short description is used to simplify the identification of the EUT in this test report.
For the purposes of this test report, ancillary equipment is defined as equipment which is used
in conjunction with the EUT to provide operational and control features to the EUT. It is
necessary to configure the system in a typical fashion, as a customer would normally use it.
But nevertheless Ancillary Equipment can influence the test results.
For the purposes of this test report, auxiliary equipment is defined as equipment which is used
temporarily to enable operational and control features especially used for the tests of the EUT
which is not used during normal operation or equipment that is used during the tests in
combination with the EUT but is not subject of this test report. It is necessary to configure the
system in a typical fashion, as a customer would normally use it.
But nevertheless Auxiliary Equipment can influence the test results.
This chapter describes the combination of EUTs and equipment used for testing. The rationale
for selecting the EUTs, ancillary and auxiliary equipment and interconnecting cables, is to test
a representative configuration meeting the requirements of the referenced standards.
FMCW Radar Signal with an operational frequency range from 78 GHz to 82 GHz
The Equipment Under Test (EUT) was set up to perform the fundamental bandwidth
measurements.
The reference level is the level of the highest amplitude signal observed from the transmitter
at either the fundamental frequency or first-order modulation products in all typical modes of
operation, including the unmodulated carrier, even if atypical.
The results recorded were measured with the modulation which produce the worst-case
(smallest) emission bandwidth.
The Equipment Under Test (EUT) was set up on a non-conductive support (tilt device) at 1.5 m
height in a fully-anechoic chamber. The LPR and the test antenna were adjusted for maximum
main beam coupling.
Analyzer settings:
• Resolution Bandwidth (RBW): 1000 kHz
• Video Bandwidth (VBW): 3000 kHz
• Span: 10 GHz
• Trace: Maxhold
• Sweeps: allow the trace to stabilize
• Sweeptime: TD = Ts / ΔF (where Ts is the signal sweep frequency time in seconds; ΔF is
the signal sweep frequency in MHz)
• Detector: Peak
RSS-211: 5.1
(a)The minimum fundamental emission bandwidth shall be 50 MHz.
Ambient temperature: 24 °C
Air Pressure: 1002 hPa
Humidity: 44 %
25
20
77.950700000 GHz
19.091 dBm 82.009700000 GHz
10 7.698 dBm 10 dBc
77.690000000 GHz
7.290 dBm
0
-10
Level in dBm
-20
-30
-40
-50
74.5 76 78 80 82 84 85.5
Frequency in GHz
b. It may be necessary to offset the measurement frequency in order to ensure that the
measurement is made within the fundamental emission bandwidth because the 3 dB
bandwidth of the RBW is not entirely within the fundamental emission bandwidth. The
measurement shall be made at the nearest frequency to the frequency identified in step 4
when the 3 dB point of the RBW closest to the fundamental emission band edge is at the
frequency of the band edge.
c. If the measurement must be performed with a RBW greater than 3 MHz because the PRF is
between 1 MHz and 3 MHz or for any other reason, the test report must contain a detailed
description of the test procedure, calibration of the test setup, and the instrumentation used.
6. Determine the conducted power output of the EUT or the field strength produced by the EUT
at a given distance from the measurements in steps 1 to 5 by calculation taking into account
all attenuators, amplifier gains, antenna factor, measurement distance extrapolation,
conversion loss, cable losses, etc. as applicable or the signal substitution method.
7. The EIRP is then calculated by applying the appropriate equation as follows: a. For
conducted measurements EIRP (dBm) = conducted power (dBm) + antenna gain (dBi) where
the conducted power is the conducted power output of the EUT and antenna gain is the gain of
the EUT antenna.
b. For radiated emission measurements EIRP (dBm) = E (dBμV/m) – 104.8 + 20 Log D where
E is the field strength at the far field distance D.
TD = TS/ΔF
where:
TS is the signal sweep frequency time in seconds
ΔF is the signal sweep frequency span in MHz
5. Set the detector to peak mode.
6. Set the RBW to 1 MHz.
7. Perform sufficient multiple scans on the spectrum analyzer in maximum hold with a
sweep time suitable for displaying the variation in the signal level over the frequency
span.
8. Record the maximum signal level. This is the peak value of the LPR signal.
9. Calculate the average factor
Average factor = (TD) / cycle time
where:
cycle time is the total time for a complete cycle of the signal including retrace and any
other latency times.
10. Determine the average by multiplying the maximum signal level obtained in Step 8 by
the average factor.
11. Determine the conducted power output of the EUT or the field strength produced by the
EUT at a given distance from the measurements in steps 1 to 10 by calculation taking
into account all attenuators, amplifier gains, antenna factor, measurement distance
extrapolation, conversion loss, cable losses, etc. as applicable or the signal substitution
method.
12. The EIRP is then calculated by applying the appropriate equation as follows:
a. For conducted measurements EIRP (dBm) = conducted power (dBm) + antenna gain
(dBi) where the conducted power is the conducted power output of the EUT and
antenna gain is the gain of the EUT antenna.
b. For radiated emission measurements EIRP (dBm) = E (dBμV/m) – 104.8 + 20 Log D
where E is the field strength at the far field distance D.
Fundamental emissions limits. (1) All emission limits provided in this section are expressed in
terms of Equivalent Isotropic Radiated Power (EIRP).
The EIRP level is to be determined from the maximum measured power within a specified
bandwidth.
(i) The EIRP in 1 MHz is computed from the maximum power level measured within any 1-MHz
bandwidth using a power averaging detector;
(ii) The EIRP in 50 MHz is computed from the maximum power level measured with a peak
detector in a 50-MHz bandwidth centered on the frequency at which the maximum average
power level is realized and this 50 MHz bandwidth must be contained within the authorized
operating bandwidth. For a RBW less than 50 MHz, the peak EIRP limit (in dBm) is reduced by
20 log(RBW/50) dB where RBW is the resolution bandwidth in megahertz. The RBW shall not
be lower than 1 MHz or greater than 50 MHz. The video bandwidth of the measurement
instrument shall not be less than the RBW. If the RBW is greater than 3 MHz, the application
for certification filed shall contain a detailed description of the test procedure, calibration of the
test setup, and the instrumentation employed in the testing.
(3) The EIRP limits for LPR operations in the bands authorized by this rule section are provided
in Table 1. The emission limits in Table 1 are based on boresight measurements (i.e.,
measurements performed within the main beam of an LPR antenna).
Table 1
Average emission limit Peak emission limit
Frequency band of
(EIRP in dBm measured in (EIRP in dBm measured
operation (GHz)
1 MHz) in 50 MHz)
5.925 – 7.250 -33 7
24.05 – 29.00 -14 26
75 - 85 -3 34
RSS-211: 5.2
(b) For average emission limits, LPR devices shall not exceed the limits provided in Table 1
measured in a 1 MHz measurement bandwidth with an average detector. For peak emission
limits, LPR devices shall not exceed the limits provided in Table 1 measured in a 50 MHz
measurement bandwidth with a peak detector.
Ambient temperature: 24 °C
Air Pressure: 1002 hPa
Humidity: 44 %
EIRP in 1 MHz
Power Emission Margin to Power
EIRP Frequency Limit Limit EIRP
[dBm] [MHz] [dBm] [dBm]
-31.74 77950.7 -3.0 28.74
COMMENT:
Average-Factor = -50.83 dB
Calculation-Parameters:
Frequency Seep Time Ts = 5.12 ms
Signal Sweep Frequency Span ΔF = 4000 MHz
Re-trace Time = 150 ms
Total-cycle Time = 155.12 ms
EIRP in 50 MHz
Power Emission Margin to Power
EIRP Frequency Limit Limit EIRP
[dBm] [MHz] [dBm] [dBm]
25.4 77936.0 34.0 8.6
25
20
77.950700000 GHz
19.091 dBm
10
-10
Level in dBm
-20
-30
-40
-50
74.5 76 78 80 82 84 85.5
Frequency in GHz
30
77.936000000 GHz
25.385 dBm
20
10
Level in dBm
-10
-20
-30
72.5 74 76 78 80 82 84 86 87.5
Frequency in GHz
The test set-up was made in accordance to the general provisions of ANSI C63.10 in a typical
installation configuration. The Equipment Under Test (EUT) was set up on a non-conductive
table 1.0 x 2.0 m² in the semi-anechoic chamber. The influence of the EUT support table that
is used between 30–1000 MHz was evaluated.
The measurement procedure is implemented into the EMI test software EMC32 from R&S.
Exploratory tests are performed at 3 orthogonal axes to determine the worst-case orientation
of a body-worn or handheld EUT. The final test on all kind of EUTs is also performed at 3 axes.
A pre-check is performed while the EUT is powered from a DC power source.
1. Measurement up to 30 MHz
The Loop antenna HFH2-Z2 is used.
After the measurement a plot will be generated which contains a diagram with the results of
the preliminary scan and a chart with the frequencies and values of the results of the final
measurement.
Measurement
Frequency in MHz Limit (µV/m) Limits (dBµV/m)
distance (m)
0.009 – 0.49 2400/F(kHz)@300m 3 (48.5 – 13.8)@300m
0.49 – 1.705 24000/F(kHz)@30m 3 (33.8 – 23.0)@30m
1.705 – 30 30@30m 3 29.5@30m
The measured values are corrected with an inverse linear distance extrapolation factor (40
dB/decade) according FCC 15.31 (2).
Measurement
Frequency in MHz Limit (µV/m) Limits (dBµV/m)
distance (m)
30 – 88 100@3m 3 40.0@3m
88 – 216 150@3m 3 43.5@3m
216 – 960 200@3m 3 46.0@3m
960 - 26000 500@3m 3 54.0@3m
26000 - 40000 500@3m 1 54.0@3m
above 40000 500@3m 0.5 54.0@3m
The measured values above 26 GHz are corrected with an inverse linear distance extrapolation
factor (20 dB/decade).
RSS-211: 5.3
(a) The device shall be installed inside a closed container or in a still pipe by qualified
installers.
(b) The leakage of the RF field outside the container at 3 m from the container or still pipe
walls shall not exceed the values outlined in Table. The levels shall be assessed using the
procedures defined in ETSI EN 302 372.
S01_CB01
Spurious Freq. Spurious Level Detec- RBW Limit Margin to Limit
[MHz] [dBµV/m] tor [kHz] [dBµV/m] [dB]
96.030000 27.09 QP 120 43.50 16.41
332.640000 30.33 QP 120 46.00 15.67
385.200000 35.84 QP 120 46.00 10.16
389.760000 33.42 QP 120 46.00 12.58
393.480000 34.07 QP 120 46.00 11.93
450.000000 42.26 QP 120 46.00 3.74
770.010000 40.71 QP 120 46.00 5.29
S01_FB01
Spurious Freq. Spurious Level Detec- RBW Limit Margin to Limit
[MHz] [dBµV/m] tor [kHz] [dBµV/m] [dB]
450.000000 40.44 QP 120 43.50 5.56
470.010000 40.83 QP 120 46.00 5.17
489.990000 41.87 QP 120 46.00 4.13
510.000000 41.65 QP 120 46.00 4.35
530.010000 40.50 QP 120 46.00 5.50
570.000000 32.98 QP 120 46.00 13.02
590.010000 31.37 QP 120 46.00 14.63
709.980000 38.71 QP 120 46.00 7.29
729.870000 40.39 QP 120 46.00 5.61
750.000000 42.03 QP 120 46.00 3.97
770.010000 41.21 QP 120 46.00 4.79
789.990000 40.19 QP 120 46.00 5.81
870.000000 37.29 QP 120 46.00 8.71
60
50
40
Level in dBµV/m
30
20
10
S01_CB01
1 GHz – 18 GHz
80
70
60
50
Level in dBµV/m
40
30
20
10
0
1G 2G 3G 4G 5G 6 8 10G 18G
Frequency in Hz
80
70
60
50
Level in dBµV/m
40
30
20
10
0
18 19 20 21 22 23 24 25 26
Frequency in GHz
S01_CB01
26 GHz – 40 GHz
60
55
50
45
Level in dBµV/m
40
35
30
25
20
26 28 30 32 34 36 38 40
Frequency in GHz
60
55
50
Level in dBµV/m
45
40
35
30
40 42 44 46 48 50 52 54 56 58 60
Frequency in GHz
S01_CB01
60 GHz – 90 GHz
60
55
50
Level in dBµV/m
45
40
35
30
60 65 70 75 80 85 90
Frequency in GHz
60
55
50
Level in dBµV/m
45
40
35
30
90 100 110 120 130 140
Frequency in GHz
S01_CB01
140 GHz – 200 GHz
60
55
50
Level in dBµV/m
45
40
35
30
140 150 160 170 180 190 200
Frequency in GHz
60
50
40
Level in dBµV/m
30
20
10
-42
-44
-46
-48
-50
Level in dBm
EN_302372_v2.1.0
-52
-54
-56
-58
-60
-62
-64
60 65 70 75 80 85 90
Frequency in GHz
S01_FB01
60 GHz – 90 GHz
-42
-44
-46
-48
-50
Level in dBm
EN_302372_v2.1.0
-52
-54
-56
-58
-60
-62
-64
60 65 70 75 80 85 90
Frequency in GHz
The Equipment Under Test (EUT) was set up on a non-conductive support (tilt device) at 1.5 m
height in the fully-anechoic chamber.
All steps were performed with one height (1.5 m) of the receiving antenna only.
The EUT is turned during the measurement the turn table step size (azimuth angle) for the
measurement is 1 °, the Turntable angle range: –180° to +180°.
Analyzer settings:
• Resolution Bandwidth (RBW): 1000 kHz
• Video Bandwidth (VBW): 3000 kHz
• Span: zero-span
• Trace: Maxhold
• Sweeps: single
• Sweeptime: 1 s
• Detector: Peak
(A) LPR devices operating under the provisions of this section within the 5.925-7.250 GHz and
24.05-29.00 GHz bands must use an antenna with a −3 dB beamwidth no greater than 12
degrees.
(B) LPR devices operating under the provisions of this section within the 75-85 GHz band must
use an antenna with a −3 dB beamwidth no greater than 8 degrees.
RSS-211: 5.2
(a) For devices operating in open-air environments, the antenna shall have a maximum half-
power beamwidth of 12° for the bands 5.65-8.5 GHz and 24.05-29 GHz, and a maximum half-
power beamwidth of 8° for the band 75-85 GHz.
Ambient temperature: 24 °C
Air Pressure: 1002 hPa
Humidity: 44 %
S01_CB01
COMMENT: only an extract of the table is represented
Margin
Margin to
Normalized Normalized Half-Power Side-Lobe to 3 dB side-lobe
Azimuth Level Beamwidth Limit Gain Limit Limit Limit
[deg] [dB] [dbc] [dbc] [dB] [dB]
294.0 -49.4 -3 -38 -46.4 -11.4
295.0 -49.2 -3 -38 -46.2 -11.2
296.0 -52.8 -3 -38 -49.8 -14.8
297.0 -50.0 -3 -38 -47.0 -12.0
298.0 -47.7 -3 -38 -44.7 -9.7
299.0 -51.2 -3 -38 -48.2 -13.2
300.0 -57.4 -3 N/A -54.4 N/A
301.0 -54.6 -3 N/A -51.6 N/A
302.0 -51.3 -3 N/A -48.3 N/A
303.0 -52.4 -3 N/A -49.4 N/A
304.0 -53.6 -3 N/A -50.6 N/A
305.0 -52.5 -3 N/A -49.5 N/A
306.0 -48.9 -3 N/A -45.9 N/A
307.0 -45.7 -3 N/A -42.7 N/A
308.0 -45.5 -3 N/A -42.5 N/A
309.0 -44.4 -3 N/A -41.4 N/A
310.0 -42.0 -3 N/A -39.0 N/A
311.0 -42.1 -3 N/A -39.1 N/A
312.0 -42.4 -3 N/A -39.4 N/A
313.0 -39.7 -3 N/A -36.7 N/A
314.0 -39.6 -3 N/A -36.6 N/A
315.0 -45.2 -3 N/A -42.2 N/A
316.0 -44.5 -3 N/A -41.5 N/A
317.0 -46.6 -3 N/A -43.6 N/A
318.0 -46.8 -3 N/A -43.8 N/A
319.0 -51.8 -3 N/A -48.8 N/A
320.0 -52.3 -3 N/A -49.3 N/A
321.0 -41.1 -3 N/A -38.1 N/A
322.0 -40.9 -3 N/A -37.9 N/A
323.0 -39.1 -3 N/A -36.1 N/A
324.0 -38.5 -3 N/A -35.5 N/A
325.0 -38.4 -3 N/A -35.4 N/A
326.0 -36.9 -3 N/A -33.9 N/A
327.0 -36.7 -3 N/A -33.7 N/A
328.0 -36.8 -3 N/A -33.8 N/A
329.0 -36.8 -3 N/A -33.8 N/A
330.0 -36.2 -3 N/A -33.2 N/A
331.0 -35.9 -3 N/A -32.9 N/A
332.0 -35.3 -3 N/A -32.3 N/A
333.0 -34.8 -3 N/A -31.8 N/A
334.0 -35.0 -3 N/A -32.0 N/A
335.0 -35.4 -3 N/A -32.4 N/A
336.0 -35.5 -3 N/A -32.5 N/A
337.0 -35.6 -3 N/A -32.6 N/A
338.0 -35.4 -3 N/A -32.4 N/A
339.0 -32.6 -3 N/A -29.6 N/A
340.0 -32.7 -3 N/A -29.7 N/A
341.0 -29.4 -3 N/A -26.4 N/A
342.0 -28.7 -3 N/A -25.7 N/A
343.0 -27.6 -3 N/A -24.6 N/A
The Equipment Under Test (EUT) was set up on a non-conductive support (tilt device) at 1.5 m
height in the fully-anechoic chamber.
All steps were performed with one height (1.5 m) of the receiving antenna only.
The EUT is turned during the measurement the turn table step size (azimuth angle) for the
measurement is 1 °, the Turntable angle range: –180° to +180°.
Analyzer settings:
• Resolution Bandwidth (RBW): 1000 kHz
• Video Bandwidth (VBW): 3000 kHz
• Span: zero-span
• Trace: Maxhold
• Sweeps: single
• Sweeptime: 1 s
• Detector: Peak
Antenna side lobe gain. LPR devices operating under the provisions of this section must limit
the side lobe antenna gain relative to the main beam gain for off-axis angles from the main
beam of greater than 60 degrees to the levels provided in Table.
Frequency range (GHz) Antenna side lobe gain limit relative to main beam gain (dB)
5.925 – 7.250 -22
24.05 – 29.00 -27
75 - 85 -38
RSS-211: 5.2
(c)LPR devices must limit the antenna side lobe gain relative to the main beam gain for off-
axis angles from the main beam of greater than 60° for the levels provided in Table.
Frequency range (GHz) Antenna side lobe gain limit relative to main beam gain (dB)
5.925 – 7.250 -22
24.05 – 29.00 -27
75 - 85 -38
Intentional radiators operating under the alternative provisions to the general emission limits,
as contained in §§15.217 through 15.257 and in subpart E of this part, must be designed to
ensure that the 20 dB bandwidth of the emission, or whatever bandwidth may otherwise be
specified in the specific rule section under which the equipment operates, is contained within
the frequency band designated in the rule section under which the equipment is operated. In
the case of intentional radiators operating under the provisions of subpart E, the emission
bandwidth may span across multiple contiguous frequency bands identified in that subpart.
The requirement to contain the designated bandwidth of the emission within the specified
frequency band includes the effects from frequency sweeping, frequency hopping and other
modulation techniques that may be employed as well as the frequency stability of the
transmitter over expected variations in temperature and supply voltage. If a frequency stability
is not specified in the regulations, it is recommended that the fundamental emission be kept
within at least the central 80% of the permitted band in order to minimize the possibility of
out-of-band operation.
RSS-211: 5.1
(b) The fundamental emission bandwidth shall be confined within the designated device
operating bands under all conditions.
Ambient temperature: 24 °C
Air Pressure: 1002 hPa
Humidity: 44 %
S01_CB01
Voltage = normal; Temperature = 50 °C
2 Radiated Emissions
Lab to perform radiated emission tests
The calibration interval is the time interval between “Last Calibration” and “Calibration Due”
Sample calculation
Sample calculation
(dLimit = 10 m)
30 18.6 -9.9 0.29 0.04 0.23 0.02 -10.5 10 3
50 6.0 -9.6 0.39 0.09 0.32 0.08 -10.5 10 3
100 9.7 -9.2 0.56 0.14 0.47 0.08 -10.5 10 3
150 7.9 -8.8 0.73 0.20 0.59 0.12 -10.5 10 3
200 7.6 -8.6 0.84 0.21 0.70 0.11 -10.5 10 3
250 9.5 -8.3 0.98 0.24 0.80 0.13 -10.5 10 3
300 11.0 -8.1 1.04 0.26 0.89 0.15 -10.5 10 3
350 12.4 -7.9 1.18 0.31 0.96 0.13 -10.5 10 3
400 13.6 -7.6 1.28 0.35 1.03 0.19 -10.5 10 3
450 14.7 -7.4 1.39 0.38 1.11 0.22 -10.5 10 3
500 15.6 -7.2 1.44 0.39 1.20 0.19 -10.5 10 3
550 16.3 -7.0 1.55 0.46 1.24 0.23 -10.5 10 3
600 17.2 -6.9 1.59 0.43 1.29 0.23 -10.5 10 3
650 18.1 -6.9 1.67 0.34 1.35 0.22 -10.5 10 3
700 18.5 -6.8 1.67 0.42 1.41 0.15 -10.5 10 3
750 19.1 -6.3 1.87 0.54 1.46 0.25 -10.5 10 3
800 19.6 -6.3 1.90 0.46 1.51 0.25 -10.5 10 3
850 20.1 -6.0 1.99 0.60 1.56 0.27 -10.5 10 3
900 20.8 -5.8 2.14 0.60 1.63 0.29 -10.5 10 3
950 21.1 -5.6 2.22 0.60 1.66 0.33 -10.5 10 3
1000 21.6 -5.6 2.23 0.61 1.71 0.30 -10.5 10 3
Sample calculation
E (dB µV/m) = U (dB µV) + AF (dB 1/m) + Corr. (dB)
U = Receiver reading
AF = Antenna factor
Corr. = sum of single correction factors of used cables, switch unit, distance correction, amplifier (if applicable)
distance correction = -20 * LOG (dLimit/ dused)
Linear interpolation will be used for frequencies in between the values in the table.
Tables show an extract of values.
cable
loss 4
cable (switch
loss 1 cable cable unit, used
AF (relay loss 2 loss 3 atten- cable for
R&S inside (inside (outside uator & loss 5 (to FCC
Frequency HF907 Corr. chamber) chamber) chamber) pre-amp) receiver) 15.247
MHz dB (1/m) dB dB dB dB dB dB
3000 31.0 -23.4 0.47 1.87 0.53 -27.58 1.33
4000 33.1 -23.3 0.56 2.41 0.67 -28.23 1.31
5000 34.4 -21.7 0.61 2.78 0.86 -27.35 1.40
6000 34.7 -21.2 0.58 2.74 0.90 -26.89 1.47
7000 35.6 -19.8 0.66 2.82 0.86 -25.58 1.46
cable
loss 1 cable cable cable cable cable
AF (relay loss 2 loss 3 loss 4 loss 5 loss 6
R&S inside (High (pre- (inside (outside (to
Frequency HF907 Corr. chamber) Pass) amp) chamber) chamber) receiver)
MHz dB (1/m) dB dB dB dB dB dB dB
7000 35.6 -57.3 0.56 1.28 -62.72 2.66 0.94 1.46
8000 36.3 -56.3 0.69 0.71 -61.49 2.84 1.00 1.53
9000 37.1 -55.3 0.68 0.65 -60.80 3.06 1.09 1.60
10000 37.5 -56.2 0.70 0.54 -61.91 3.28 1.20 1.67
11000 37.5 -55.3 0.80 0.61 -61.40 3.43 1.27 1.70
12000 37.6 -53.7 0.84 0.42 -59.70 3.53 1.26 1.73
13000 38.2 -53.5 0.83 0.44 -59.81 3.75 1.32 1.83
14000 39.9 -56.3 0.91 0.53 -63.03 3.91 1.40 1.77
15000 40.9 -54.1 0.98 0.54 -61.05 4.02 1.44 1.83
16000 41.3 -54.1 1.23 0.49 -61.51 4.17 1.51 1.85
17000 42.8 -54.4 1.36 0.76 -62.36 4.34 1.53 2.00
18000 44.2 -54.7 1.70 0.53 -62.88 4.41 1.55 1.91
Sample calculation
Sample calculation
Sample calculation
Sample calculation
Sample calculation
Sample calculation
Sample calculation
Drawing 1: Setup in the Anechoic chamber. For measurements below 1 GHz the ground was
replaced by a conducting groundplane.
The measurement uncertainties for all parameters are calculated with an expansion factor
(coverage factor) k = 1.96. This means, that the true value is in the corresponding interval
with a probability of 95 %.
The verdicts in this test report are given according the above diagram:
That means, the laboratory applies, as decision rule (see ISO/IEC 17025:2017), the so called
shared risk principle.