Compal RML-N1 User manual

COMPAL Electronics, INC. EDM No. S070000031110
.USER MANUAL
Rev. AB Page 1 2021/03/24
RML-N1 LGA Module User Manual

COMPAL Electronics, INC. EDM No. S070000031110
.USER MANUAL
Rev. AB Page 2 2021/03/24
Copyright
Copyright © 2021 COMPAL ELECTRONICS,INC. All rights reserved.
Without the prior written permission of the copyright holder, any company or individual is prohibited to excerpt, copy any
part of or the entire document, or distribute the document in any form.
Notice
The document is subject to update from time to time owing to the product version upgrade or other
reasons. Unless otherwise specified, the document only serves as the user guide. All the statements,
information and suggestions contained in the document do not constitute any explicit or implicit guarantee.

COMPAL Electronics, INC. EDM No. S070000031110
.USER MANUAL
Rev. AB Page 3 2021/03/24
Contents
1Overview.................................................................................................................................................................................5
1.1 Safety Information...................................................................................................................................................................6
2FCC Notice........................................................................................................................................................................... 11

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.USER MANUAL
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Table Index
Table 1: Antenna port mapping table---For US band LGA module........................................................... 8

COMPAL Electronics, INC. EDM No. S070000031110
.USER MANUAL
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1Overview
The RML-N1 devices are WWAN LGA module in size 45x45mm. The LGA module and device software combination deliver
multiband, multimode WWAN connectivity in a single hardware configuration. RML-N1 supports NR FR1(sub6) n2/ n5/
n12/ n25/ n30/ n41/ n66/ n71/ n77, LTE Band 2/ 4/ 5/ 12/ 25/ 26/ 30/ 41/ 48/ 66/ 71, LTE Band 29/46 is for downlink only.
The RML-N1 devices also have an internal GPS receiver that can operate standalone or in simultaneous operation with its
WWAN radios.
The RML-N1 device uses Mediatek chipset components. It implements the 5G NR standard for sub-6 GHz bands. The
MT6190 device is a highly-integrated multimode, multiband RF CMOS transceiver IC that interfaces with the MT6890
device through IQ interface, it is the integrated single-chip RFIC that supports 5G NR sub-6 together with legacy 3G to 4G
LTE.
RML-N1 and supported features for the NR FR1, Duplex mode: FDD(Frequency Division Duplex) and TDD((Time Division
Duplex)). MIMO(Multi-input Multi-output) capability: up to 4x4 DL MIMO; CA(Carrier Aggregation) capability: DLCA:
inter-band, intra-band contiguous and intra-band non-contiguous DLCA; ULCA: inter-band and intra-band contiguous ULCA.
Modulation: UL: 256QAM; DL: 256QAM. Waveform: UL: CP-OFDM and DFT-S-OFDM; DL: CP-OFDM.
As for LTE, RML-N1 supports both FDD and TDD mode, MIMO capability: up to 4x4 DL MIMO, and 2x2 UL MIMO for
n41. CA capability: DLCA: inter-band, intra-band contiguous and intra-band non-contiguous DLCA; ULCA: inter-band and
intra-band contiguous ULCA. Modulation: UL: 256QAM; DL: 256QAM

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.USER MANUAL
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1.1 Safety Information
The following safety precautions must be observed during all phases of operation, such as
usage, service or repair of any cellular terminal or mobile incorporating with RML LGA
module. Manufacturers of the cellular terminal should send the following safety information
to users and operating personnel, and incorporate these guidelines into all manuals supplied
with the product. If not so, Compal assumes no liability for customers’ failure to comply with
these precautions.
Full attention must be given to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) causes
distraction and can lead to an accident. Please comply with laws and regulations
restricting the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. The
operation of wireless appliances in an aircraft is forbidden to prevent interference
with communication systems. If the device offers an Airplane Mode, then it should
be enabled prior to boarding an aircraft. Please consult the airline staff for more
restrictions on the use of wireless devices on boarding the aircraft.
Wireless devices may cause interference on sensitive medical equipment, so please
be aware of the restrictions on the use of wireless devices when in hospitals,
clinics or other healthcare facilities.

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Cellular terminals or mobiles operating over radio signals and cellular network
cannot be guaranteed to connect in all possible conditions (for example, with
unpaid bills or with an invalid (U)SIM card). When emergent help is needed in
such conditions, please remember using emergency call. In order to make or
receive a call, the cellular terminal or mobile must be switched on in a service area
with adequate cellular signal strength.
The cellular terminal or mobile contains a transmitter and receiver. When it is ON,
it receives and transmits radio frequency signals. RF interference can occur if it is
used close to TV set, radio, computer or other electric equipment.
In locations with potentially explosive atmospheres, obey all posted signs to turn
off wireless devices such as your phone or other cellular terminals. Areas with
potentially explosive atmospheres include fuelling areas, below decks on boats,
fuel or chemical transfer or storage facilities, areas where the air contains
chemicals or particles such as grain, dust or metal powders, etc.

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.USER MANUAL
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Table 1: Antenna port mapping table---For US band LGA module

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.USER MANUAL
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.USER MANUAL
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Trace design
The trace from module transmitter to antenna connector on the EVB must be maintained identical as the above
specification with i-pex connector. Only trace designs approved by the module original grantee or through permissive
change can be used by an host manufacturer. Any changes are deemed as antenna type change and should be
reviewed to ensure compliance with the FCC regulation rules.
Verification must be conducted and the results shall not exceed below ranges to ensure identical antenna design is
applied to subsequent integration and end product production.
Test procedures of Verification
1. Set Transmission in the supported modulation mode, band and Channel.
2. Verify RF tuned-up power through conducted measurement with appropriate cable loss. The KDB guidance
971168 D01 can be followed to obtain the measurement results.
3. Verify the RF output power results obtained if it’s accordance with the datasheet and test reports.