FCC Test Report

Test Report Details

Prepared For

Launch Tech Co., Ltd.
Launch Industrial Park, North of Wuhe Rd., Banxuegang, Longgang, Shenzhen, China

Prepared By

Centre Testing International Group Co., Ltd.
Hongwei Industrial Zone, Bao'an 70 District, Shenzhen, Guangdong, China
TEL: +86-755-3368 3668
FAX: +86-755-3368 3385

Approvals

Compiled By: Ware Xin

Approved by: David Wang

Reviewed by: Aaron Ma

Date: Mar. 10, 2021

Check No.: 4905393385

Version History

Test Summary

Remark: Company Name and Address shown on Report, the sample(s) and sample Information was/were provided by the applicant who should be responsible for the authenticity which CTI hasn't verified. Model No.: CRT 511, CRT 5XXY, CRT 5XXXY ("XX"=01~99,"XXX"=001~999, "Y"=A~Z or blank). Only the model CRT 511 was tested, since the electrical circuit design, layout, components used and internal wiring were identical for the above models. Only the model name, soft plastic jacket and black plastic shell are different.

General Information

5.1 Client Information

5.2 General Description of EUT

5.3 Test Environment and Mode

Support Units

Test Location

All tests were performed at: Centre Testing International Group Co., Ltd Building C, Hongwei Industrial Park Block 70, Bao'an District, Shenzhen, China
Telephone: +86 (0) 755 33683668 Fax:+86 (0) 755 33683385
No tests were sub-contracted.
FCC Designation No.: CN1164

Deviations from Standards

None.

Abnormalities from Standard Conditions

None.

Other Information Requested by the Customer

None.

Measurement Uncertainty (95% confidence levels, k=2)

Equipment List

Conducted disturbance Test

3M Semi/full-anechoic Chamber

Test Results and Measurement Data

7.1 Antenna Requirement

Standard requirement: 47 CFR Part 15C Section 15.203

15.203 requirement: An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator, the manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited.

EUT Antenna: The antenna is integrated on the main PCB and no consideration of replacement. The best case gain Of the antenna is 0 dBi.

7.2 Conducted Emissions

Test Requirement: 47 CFR Part 15C Section 15.207

Test Method: ANSI C63.10

Test Frequency Range: 150kHz to 30MHz

Limits

* Decreases with the logarithm of the frequency.

Test Procedure

1. The mains terminal disturbance voltage test was conducted in a shielded room.
2. The EUT was connected to AC power source through a LISN 1 (Line Impedance Stabilization Network) which provides a 50μH + 50 μH linear impedance. The power cables of all other units of the EUT were connected to a second LISN 2, which was bonded to the ground reference plane in the same way as the LISN 1 for the unit being measured. A multiple socket outlet strip was used to connect multiple power cables to a single LISN provided the rating of the LISN was not exceeded.
3. The tabletop EUT was placed upon a non-metallic table 0.8m above the ground reference plane. And for floor-standing arrangement, the EUT was placed on the horizontal ground reference plane.
4. The test was performed with a vertical ground reference plane. The rear of the EUT shall be 0.4 m from the vertical ground reference plane. The vertical ground reference plane was bonded to the horizontal ground reference plane. The LISN 1 was placed 0.8 m from the boundary of the unit under test and bonded to a ground reference plane for LISNs mounted on top of the ground reference plane. This distance was between the closest points of the LISN 1 and the EUT. All other units of the EUT and associated equipment was at least 0.8 m from the LISN 2.
5. In order to find the maximum emission, the relative positions of equipment and all of the interface cables must be changed according to ANSI C63.10: 2013 on conducted measurement.

Test Setup Description

The test setup involves the EUT connected to an AC power source via a Line Impedance Stabilization Network (LISN 1). A second LISN (LISN 2) is used for other units. The setup is within a shielded room, with the EUT placed on a table 0.8m above the ground reference plane. The rear of the EUT is 0.4m from a vertical ground reference plane, which is bonded to the horizontal ground reference plane. LISN 1 is 0.8m from the EUT. A test receiver is used for measurement.

Test Mode: Transmitting mode

Test voltage: 120V/60Hz

Instruments Used: Refer to section 6 for details

Test Results: Pass

Conducted Emissions - Live Line Measurement Data

Notes:
1. The following Quasi-Peak and Average measurements were performed on the EUT:
2. Final Test Level =Receiver Reading + LISN Factor + Cable Loss.

Conducted Emissions - Neutral Line Measurement Data

Notes:
1. The following Quasi-Peak and Average measurements were performed on the EUT:
2. Final Test Level =Receiver Reading + LISN Factor + Cable Loss.

7.3 Spurious Emissions

Test Requirement: 47 CFR Part 15C Section 15.231(b) and 15.209

Test Method: ANSI C63.10

Test Site: Measurement Distance: 3m (Semi-Anechoic Chamber)

Receiver Setup

Test Setup Description

Figure 1. Below 30MHz: The test setup shows the EUT, antenna, and measurement equipment within a test environment. The antenna is positioned at a specific height (1 meter for below 30MHz) and the EUT is on a rotating table.

Figure 2. 30MHz to 1GHz: The test setup shows the EUT, antenna, and measurement equipment. The antenna is positioned at a variable height (1 to 4 meters) and the EUT is on a rotating table.

Test Procedure

Below 1GHz test procedure:

1. The EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 meter semi-anechoic chamber. The table was rotated 360 degrees to determine the position of the highest radiation.
2. The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on the top of a variable-height antenna tower.
3. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement.
4. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters (for the test frequency of below 30MHz, the antenna was tuned to heights 1 meter) and the rota table was turned from 0 degrees to 360 degrees to find the maximum reading.
5. The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum Hold Mode.
6. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method as specified and then reported in a data sheet.

Limits for Spurious Emissions

Note: 15.35(b), Unless otherwise specified, the limit on peak radio frequency emissions is 20dB above the maximum permitted average emission limit applicable to the equipment under test. This peak limit applies to the total peak emission level radiated by the device.

Test Mode: Transmitting mode

Test Voltage: DC 3.8V

Instruments Used: Refer to section 6 for details

Test Results: Pass

Spurious Emissions - Measurement Data (9kHz~150kHz)

Remark:
1. The radiation measurements are performed in X, Y, Z axis positioning for Transmitting mode, and found the X axis positioning which it is the worst case.
2. The field strength is calculated by adding the Antenna Factor, Cable Factor & Preamplifier. The basic equation with a sample calculation is as follows:
Final Test Level =Receiver Reading - Correct Factor
Correct Factor = Preamplifier Factor– Antenna Factor–Cable Factor
3. The highest frequency is 125kHz of the EUT, so upper frequency of measurement range is 30MHz.

Spurious Emissions - Measurement Data (150kHz~30MHz)

Remark:
1. The radiation measurements are performed in X, Y, Z axis positioning for Transmitting mode, and found the X axis positioning which it is the worst case.
2. The field strength is calculated by adding the Antenna Factor, Cable Factor & Preamplifier. The basic equation with a sample calculation is as follows:
Final Test Level =Receiver Reading - Correct Factor
Correct Factor = Preamplifier Factor– Antenna Factor–Cable Factor
3. The highest frequency is 125kHz of the EUT, so upper frequency of measurement range is 30MHz.

7.4 Occupied Bandwidth

Test Requirement: 47 CFR Part 15C Section 2.1049

Test Method: ANSI C63.10

Limit: The occupied bandwidth, that is the frequency bandwidth such that, below its lower and above its upper frequency limits, the mean powers radiated are each equal to 0.5 percent of the total mean power radiated are each equal to 0.5% of the total mean power radiated by a given emission.

Test Setup Description

The test setup for occupied bandwidth measurement involves the EUT configured for transmitting mode, using standard test equipment as listed in Section 6.

Test Mode: Transmitting mode

Instruments Used: Refer to section 6 for details

Test Results: Pass

Measurement Data

Occupied bandwidth: 227.5Hz

Test plot is as follows: (Note: The actual plot cannot be included in this text-based output.)