FCCID.CO- FCC ID Database
HomeCompaniesEquipment ClassesSearch

© 2026 FCC ID Database. All rights reserved.

AboutContactData sourced from FCC public records
  1. Home/
  2. Westbay Technologies Ltd./
  3. XZDWJT844-1000M

XZDWJT844-1000MRF Module

Westbay Technologies Ltd.
RF Module - FCC ID XZDWJT844-1000M - Westbay Technologies Ltd.
Click to zoom

Application Details

Equipment Class
DXT - Part 15 Low Power Transceiver, Rx Verified
Date of Grant
Aug 16, 2010
Application Purpose
Original Equipment
Date of Application
Aug 12, 2010
Equipment Note
RF Module
Frequency Range
905.00000000 - 925.00000000
Company
Westbay Technologies Ltd.
Country
China

Documents & Files

Select a file to view

Users Manual

↗

Cover Letter(s)

↗
↗
↗

External Photos

↗

ID Label/Location Info

↗

Internal Photos

↗

Test Report

↗

Test Setup Photos

↗

Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

电话/Tel: +86-21-6114 5199 传真/Fax: +86-21-5059 8336 邮箱/E-mail: [email protected] 上海市浦东新区海桐路336弄1号楼701室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China 201204 Westbay Technologies Ltd. 西港机电科技(上海)有限公司 WJT844-1000M 900 MHz TRANSCEIVERS User’s Manual Version 1.0 电话/Tel: +86-21-6114 5199 传真/Fax: +86-21-5059 8336 邮箱/E-mail: [email protected] 上海市浦东新区海桐路336弄1号楼701室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China 201204 Westbay Technologies Ltd. 西港机电科技(上海)有限公司 WJT844-1000M Features μ Two generic input and output digital lines and integrated DAC/ADC functions μ Cost Effective for high volume applications μ Retries and Acknowledgements μ Continuous 76.8 kbps RF data stream μ Software selectable interface baud rates from 1200 bps to 115.2 kbps μ Very low power consumption for battery powered implementations μ Small size for portable and enclosed applications μ Very Low latency and high throughput μ All modules are qualified for Industrial temperatures (-40°C to 80°C) 1. Overview The WJT844-1000M is a member of Westbay’s ConnexRF OEM transceiver family. The WJT844-1000M is designed for integration into OEM systems operating under FCC part 15 regulations for the 900 MHz ISM band. The WJT844-1000M is a cost-effective, high performance. It provides an asynchronous TTL level serial interface for OEM Host communications. Communications include both system and configuration data. The Host supplies system data for transmission to other Host(s). Configuration data is stored in an on-board EEPROM. Synchronization, and RF system data transmission/reception is performed by the transceiver. These transceivers can be used as a direct serial cable replacement – requiring no special Host software for operation. They also feature a number of On-the-Fly Control Commands providing the OEM with a very versatile interface for any network. WJT844-1000M transceivers operate in a Point-to-Point or Point-to-Multipoint, Client-Server. One transceiver is configured as a Server and there can be one or many Clients. This document contains information about the hardware and software interface between an We s t ba y WJT844-1000M transceiver and an OEM Host. Information includes the theory of operation, specifications, interface definition, configuration information and mechanical drawings. 电话/Tel: +86-21-6114 5199 传真/Fax: +86-21-5059 8336 邮箱/E-mail: [email protected] 上海市浦东新区海桐路336弄1号楼701室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China 201204 Westbay Technologies Ltd. 西港机电科技(上海)有限公司 2. WJT844-1000M Specifications GENERAL 20 Pin Interface Connector Samtec TMM-110-01-L-D-SM, mates with Samtec MM-110-02-S-D RF Connector MMCX receptacle, mates with any manufacturer’s MMCX style plug Antenna MMCX Connector Serial Interface Data Rate Baud rates from 1200 bps to 115,200 bps Power Consumption (typical) Duty Cycle (TX=Transmit; RX=Receive) 10%TX 50% TX 100%TX 100%RX 33mA 54mA 80mA 28mA Security One byte System ID. 56 bit DES encryption key. Interface Buffer Size Input/Output: 256 bytes each TRANSCEIVER Frequency Band 902 – 928 MHz RF Data Rate 76.8kbps fixed RF Technology FSK Output Power -4db typica(Conducted 2dBi gain antenna)l Supply Voltage Pin 10: 3.3 – 5.5V ±50mV ripple Pin 11: 3.3 ±3%, ±100mV ripple Sensitivity -97dBm typical @ 76.8kbps RF Data Rate Range, Line of Site (based on 2dBi gain antenna) 1 mile ENVIRONMENTAL Temperature (Operating) -40°C to 80°C Temperature (Storage) -50°C to +85°C Humidity (non-condensing) 10% to 90% PHYSICAL Dimensions 1.65” x 1.9” x 0.20” Weight Less than 0.75 ounce 电话/Tel: +86-21-6114 5199 传真/Fax: +86-21-5059 8336 邮箱/E-mail: [email protected] 上海市浦东新区海桐路336弄1号楼701室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China 201204 Westbay Technologies Ltd. 西港机电科技(上海)有限公司 3. Specifications 3.1 INTERFACE SIGNAL DEFINITIONS The table below shows the connector pin numbers and associated functions. The I/O direction is with respect to the transceiver. All outputs are 3.3VDC levels and inputs are 3.3V DC TTL. All inputs are weakly pulled High and may be left floating during normal operation. Table 1 – Pin Definitions Module Pin Type Signal Name Function 1 Output GO0 Generic Output pin 2 Output TXD Transmitted data out of the transceiver 3 Input RXD Data input to the transceiver 4 Input GI0 Generic Input pin 5,16 GND GND Signal Ground 6 Output GO1 Generic Output pin 7 Output CTS Clear to Send – Active Low when the transceiver is ready to accept data for transmission. 8 Input RTS Request to Send – When enabled in EEPROM, the OEM Host can take this High when it is not ready to accept data from the transceiver. Keeping RTS High for too long can cause data loss. 9 Output GO2 Generic Output pin 10,11 PWR VCC Pin 10 (digital supply): 3.3 – 5.5V, ±50mV ripple, 50mA max Pin 11 (Power Amplifier supply): 3.3V ±3%, ±100mV ripple, 100mA max 12 Input 9600_BAUD 9600_BAUD – When pulled logic Low and then applying power or resetting, the transceiver’s serial interface is forced to a 9600, 8, N, 1 rate. To exit, transceiver must be reset or power-cycled with 9600_Baud logic High. 13 Output RSSI Received Signal Strength - An analog output giving an instantaneous indication of received signal strength. Only valid while in Receive Mode. 14 Input GI1 Generic Input pin 15 Input UP_RESET RESET – Controlled by the WJT844 for power-on reset if left unconnected. After a Stable power-on reset, a logic High pulse will reset the transceiver. 17 Input Command/Data When logic Low, the transceiver interprets Host data as command data. When logic High, the transceiver interprets Host data as transmit data. 18 Input AD In 10 bit Analog Data Input 19 Output DA Out 10 bit Analog Data Output 20 Output GO3 电话/Tel: +86-21-6114 5199 传真/Fax: +86-21-5059 8336 邮箱/E-mail: [email protected] 上海市浦东新区海桐路336弄1号楼701室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China 201204 Westbay Technologies Ltd. 西港机电科技(上海)有限公司 3.2 ELECTRICAL SPECIFICATIONS Table 2 – Input /Output Voltage Characteristics …

Text truncated - open the document above for the full version.

Cover Letter(s)

/Tel: +86-21-6114 5199 /Fax: +86-21-5059 8336 /E-mail: [email protected] 336 1 701 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China, 201204 Westbay Technologies Ltd. ( ) AUTHORIZATION LETTER Date: July 12, 2010 Federal Communication Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID : XZDWJT844-1000M We, the undersigned Westbay Technologies Ltd. hereby authorize Inventec (Pudong) Corporation to act on our behalf in all matters relating to all progresses required in FCC Part 15C and any communication needed within the national authority. Any and all acts carried out by Inventec (Pudong) Corporation on our behalf shall have the same effects as acts of our own. If you have any questions regarding the authorization, please don’t hesitate to contact us. Thank you! Sincerely ---------------------- Kevin Bao General Manager Westbay Technologies Ltd.

Cover Letter(s)

电话 /Tel: +86-21-6114 5199 传真 /Fax: +86-21-5059 8336 邮箱 /E-mail: [email protected] 上海市浦东新区海桐路 336 弄 1 号楼 701 室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China, 201204 Westbay Technologies Ltd. 西港机电科技 ( 上海 ) 有限公司 Confidentiality request letter Date: July 12, 2010 Federal Communication Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID : XZDWJT844-1000M Dear Sir/Madam: Westbay Technologies Ltd. would like to request that the following documents: 1. Block diagram 2. Operational description 3. Schematics which would be submitted with the application for certification be withheld from public disclosure per section 0.459 of the FCC Rules. This confidentiality request is made under the provision of section 0.457(d) of the FCC Rues and section 552(b)(4) of the Freedom of Information Act. The various items contain proprietary, confidential and trade secret materials, which would not customarily be made available for public inspection. If you have any questions, please don’t hesitate to contact us. Thank you! Sincerely ---------------------- Kevin Bao General Manager Westbay Technologies Ltd.

Cover Letter(s)

电话 /Tel: +86-21-6114 5199 传真 /Fax: +86-21-5059 8336 邮箱 /E-mail: [email protected] 上海市浦东新区海桐路 336 弄 1 号楼 701 室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China, 201204 Westbay Technologies Ltd. 西港机电科技 ( 上海 ) 有限公司 Modular Approval Request Letter FCC ID : XZDWJT844-1000M Date: July 12, 2010 Gentlemen: There’s a RF Module that would like to have your authorization as a modular approval. The specific product as below, RF Module , with its designed features and specified description, meets special requirements for full modular approval on FCC Public Notice DA 00-1407 Released: June 26, 2000 by cross-reference list below. Company : Westbay Technologies Ltd. Model Name : RF Module Model Number : WJT844-1000M FCC ID : XZDWJT844-1000M Requirement of Public Notice DA00‐1407 Reference to WJT844-1000M 1. The modular transmitter must have its own RF shielding. The module has its own RF shielding. Please see internal &external photo. pdf 2. The modular transmitter must have buffered modulation/ data inputs. The modular has buffered data inputs. Please see schematic. pdf 3. The modular transmitter must have its own power supply regulation. Voltage going to the VCO and PLL is regulated to ensure clean and stable operation. Please see schematic. pdf 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). The WJT844-1000M meets the FCC antenna requirements. It has a unique connector. Please see internal & external photo .pdf 5. The modular transmitter must be tested in a stand‐alone configuration, i.e., the module must not be inside another device during testing. The WJT844-1000M was tested in a stand‐alone configuration, Please see test setup photo. pdf 6. The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label refe rring to the enclosed module. The label position of WJT844-1000M is clearly indicated. Please see the label sample & location. pdf 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. The WJT844-1000M is compliant with all applicable FCC rules. Detail instructions are given in the Users Manual. Please see user manual . pdf 8. The modular transmitter must comply with any applicable RF exposure requirem ents. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectru m transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). The WJT844-1000M is approved under mobile classification and instructions on RF Exposure are listed in the user's manual, Please see user manual .pdf Thank you. Sincerely, ---------------------- Kevin Bao General Manager Westbay Technologies Ltd.

External Photos

Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 1 of 3 Report No.: LABC091101-RFI EUT Photograph (FCC ID: XZDWJT844-1000M) (1) EUT Photo-General Appearance (2) EUT Photo-Front Side (Remove Antenna) Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 2 of 3 Report No.: LABC091101-RFI (3) EUT Photo-Front Side (Remove Cover) (4) EUT Photo-Back Side Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 3 of 3 Report No.: LABC091101-RFI (5) EUT Photo-Antenna connect port

ID Label/Location Info

电话 /Tel: +86-21-6114 5199 传真 /Fax: +86-21-5059 8336 邮箱 /E-mail: [email protected] 上海市浦东新区海桐路336弄1号楼701室 Room 701, Building 1, Lane 336 Haitong Road, Shanghai, China 201204 Westbay Technologies Ltd. 西港机电科技(上海)有限公司 WJT844-1000M FCC ID:XZDWJT844-1000M

Internal Photos

Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 1 of 2 Report No.: LABC091101-RFI EUT Photograph (FCC ID: XZDWJT844-1000M) (1) EUT Photo-General Appearance (2) EUT Photo-Front Side (Remove Antenna) Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 2 of 2 Report No.: LABC091101-RFI (3) EUT Photo-Front Side (Remove Cover) (4) EUT Photo-Back Side

Test Report

FCC Certification Test Report Product Name : RF Module Trade Name : Westbay Model No. : WJT844-1000M FCC ID : XZDWJT844-1000M Applicant: Westbay Technologies Ltd. Room 701, Building 1, Lane 336 Haitong Road Shanghai, China 201204 Manufacturer: Westbay Technologies Ltd. Room 701, Building 1, Lane 336 Haitong Road Shanghai, China 201204 Test Lab Name: Inventec (Pudong) Corporation 699 Pu-xing Road, Minghang District, Shanghai 201114, China Date of Receipt : 11/09/2009 Date of Test : 06/26~08/05/2010 Issued Date : 08/05/2010 Report No. : LABC091101-RFI The test results are only related to the sample under test. The measurement traceability is based on all test equipments calibration, directly or indirectly traced to SI. The test report shall not be reproduced except in full without the written approval of Inventec (Pudong) Corporation. This report contains data that are not covered by the NVLAP accreditation. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP.NIST, or any agency of the Federal Government. Test Summary Report No. : LABC091101-RFI Product Name : RF Module Trade Name : Westbay Model No. : WJT844-1000M FCC ID : XZDWJT844-1000M Applicant : Westbay Technologies Ltd. Address : Room 701, Building 1, Lane 336 Haitong Road Shanghai, China 201204 Manufacturer : Westbay Technologies Ltd. Address : Room 701, Building 1, Lane 336 Haitong Road Shanghai, China 201204 EUT Voltage : DC 3.3V Applicable Standards : FCC Part 15 Subpart C: Jul.2008 ANSI C63.4: 2003 Test Results : Complied with the test standards Performed Location : Inventec (Pudong) Corporation 699 Pu-xing Road, Minghang District, Shanghai 201114, China TEL: +86-21-6429-8888 / FAX: +86-21-6429-5571 Documented By : Reviewed By : (Sophie Ding) (Jane Gao) Approved By : (Kenny Liu) Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 1 of 32 Report No.: LABC091101-RFI TABLE OF CONTENTS Description Page 1. General Information .......................................................................................................... 2 1.1 EUT Description ................................................................................................. 2 1.2 Mode of Operation.............................................................................................. 2 1.3 EUT Exercise Software ...................................................................................... 2 1.4 Configuration of EUT and Peripherals ................................................................ 3 1.5 Test Peripherals List ........................................................................................... 3 1.6 The Signal Cable of the Peripherals List ............................................................ 3 2. Test Facility ....................................................................................................................... 4 3. Technical Information of Testing........................................................................................ 5 3.1 Summary of Test Result ..................................................................................... 5 3.2 Measurement Uncertainty .................................................................................. 5 3.3 Test Environment................................................................................................ 5 4. Conducted Emission......................................................................................................... 6 4.1 Test Standard ..................................................................................................... 6 4.2 Limits for Conducted Emission ........................................................................... 6 4.3 Test setup at SR4 CE Test Site .......................................................................... 6 4.4 Test Equipment................................................................................................... 7 4.5 Test Procedure ................................................................................................... 7 4.6 Test Results........................................................................................................ 7 5. Radiated Emission............................................................................................................ 8 5.1 Test Standard ..................................................................................................... 8 5.2 Limits for Radiated Emission .............................................................................. 8 5.3 Test setup at SAC3 3m-HF Chamber ................................................................. 8 5.4 Test Equipment................................................................................................... 9 5.5 Test Procedure ................................................................................................. 10 5.6 Test Results...................................................................................................... 11 6. 20dB Bandwidth.............................................................................................................. 29 6.1 Test Standard ................................................................................................... 29 6.2 Test setup at RF-Con site ................................................................................. 29 6.3 Test Equipment................................................................................................. 29 6.4 Test Procedure ................................................................................................. 29 6.5 Test Results...................................................................................................... 29 7. Duty Cycle Correction..................................................................................................... 31 7.1 Test Standard ......…

Text truncated - open the document above for the full version.

Test Setup Photos

Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 1 of 2 Report No.: LABC091101-RFI Test Photograph (FCC ID: XZDWJT844-1000M) Test Mode : 905MHz(low),915MHz(middle), 925MHz(high) transmitter mode Description : Radiated Emission Test Setup for 30MHz~1GHz Test Mode : 905MHz(low),915MHz(middle), 925MHz(high) transmitter mode Description : Radiated Emission Test Setup for above 1GHz Inventec Pudong EMC Center No. 699, Puxing Rd., Shanghai, China TEL: +86-21-6429-8888 ext: 65429 EMC Test Report Page 2 of 2 Report No.: LABC091101-RFI Test setup photo on the test table

Contact Information

Applicant

Kevin Bao(General Manager)
[email protected]+86-21-61145199Fax: +86-21-50598336

Technical Contact

Inventec (Pudong) CorporationVivian Xu
[email protected]+86-21-6429-8888

699 Pu-xing Road, Minhang District · Shanghai · China

Non-Technical Contact

Inventec (Pudong) CorporationKenny Liu
[email protected]+86-21-6429-8888

Test Firm

Inventec (Pudong) CorporationJane Gao
[email protected]86-21-64298888

Technical Specifications

#Rule PartsFrequency RangePower Output
115C905 MHz - 925 MHz-
Modular Type
Single Modular Approval
Confidentiality
Long Term