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TS4-TW-101Repeater / Access Point

Tehama Wireless Design Group Inc.
Repeater / Access Point - FCC ID TS4-TW-101 - Tehama Wireless Design Group Inc.
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Application Details

Equipment Class
DSS - Part 15 Spread Spectrum Transmitter
Date of Grant
Jan 11, 2011
Application Purpose
Original Equipment
Date of Application
Jan 11, 2011
Equipment Note
Repeater / Access Point
Frequency Range
914.90000000 - 926.00000000
Company
Tehama Wireless Design Group Inc.
Country
United States

Documents & Files

Select a file to view

Users Manual

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Block Diagram

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Cover Letter(s)

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External Photos

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ID Label/Location Info

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Internal Photos

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Parts List/Tune Up Info

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RF Exposure Info

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Test Report

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Test Setup Photos

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Document Text

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

Users Manual

WAM System User Guide General Description The Tehama WAM system consists of three device types to remotely monitor various environmental and utility readings and provide the data to a central database or PC for formal presentation and reporting. MDT/Sensor devices will be placed in all locations requiring local monitoring of data. The MDT/Sensors will transmit time stamped data to a Base device, which receives the data and forwards it to a Database computer through a variety of means (serial port, USB Port, Ethernet). For MDT/Sensors that are out of range from the Base, Repeater devices are added in appropriate locations to relay the data between MDT/Sensors and the Base. The system operates in the 865MHz (Europe/Asia) and 915Mhz (US) ISM bands using off-the- shelf FSK RFIC radios. The system operates as a Frequency Hopper over 60 narrow band frequency channels, incorporating a bidirectional communication link with Acknowledge (ACK) messages to ensure all data reaches the Base. The MDT/Sensors are battery operated, bursting data packets at pre-programmed times then shutting down to conserve battery life, estimated to exceed 4 years. The Base and Repeater units are line powered. With an average MDT/Sensor transmission rate of four per hour, a single Base can accommodate many hundreds of MDT/Sensors. Through the use the ACK messages and local memory in both the MDT/Sensors and Repeaters, the number of MDT/Sensors supported can exceed a thousand. There is no limit to the number of repeaters, though an average installation may require one Repeater for every 20-30 MDT/Sensors. Figure 1: Typical System WAM User's Guide.pages!1 of 4 A system consists of two or three types of hardware, and two pieces of software: • Database Software on a PC or Access Point • Tehama Configuration Utility • One Base Unit or Access Point • A variable number of Sensors units, each with 2 AA batteries • A variable number of Repeater units (optional, depending on size of installation) with external DC power supply. Warning Tehama Installation Tool You should have received a copy of the Tehama Configuration and Installation Tool software. This runs on a Windows based PC. More detailed information can be found in the separate manual for that software. The tool can be run on the PC either prior to or during a site installation, or when new MDT/ Sensors are added to a system. The tool is used to add configuration data to the database. Examples of configuration data include the name, type, and location of equipment an MDT/ Sensor is connected to, and alarm trigger settings for the different MDT/Sensors. MDT/Sensor Configuration All MDT/Sensors come from the factory with a default factory-set configuration. The following parameters can be configured in the field by qualified installation staff through a UART style interface and terminal program running on a PC. There are no parameters which can be configured on the Base or Receiver. The most common field programmable settings are: • Monitor Type, defined as the type of device the unit is attached to for measurements. This includes temperature via thermocouple or thermistor, humidity, CO2, Pressure, or various pulse type inputs from Utility meters or dry contact outputs from door sensors or other devices. • Transmit Interval, defined as the time between scheduled transmissions of temperature data. A temperature measurement is taken every Transmit Interval, and the data transmitted within 60 seconds after the measurement. The units for this parameter are seconds, and the default value is 900 seconds (15 minutes). • Measure Interval, defined as the time between scheduled temperature measurements. This is used in conjunction with Temperature Change (see below) and must be smaller than NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT WAM User's Guide.pages!2 of 4 the Transmit Interval time. A value of 0 for this parameter will disable measurements in between the Transmit Interval. The units for this parameter are in seconds, with default set to 0. • Temperature Change, defined as a percentage change in the Thermistor resistance value (i.e. temperature) detected by the sensor. A Delta Temp alarm will be generated within the PC Software if a Sensor reading taken at a Measure Interval is more than Temperature Change percent from the prior Transmit Interval value. The units for this parameter are Percent (%), with the default value set to 0. Usage THe MDT/Sensors will come with Batteries installed. With the Configuration Tool running on the PC and the Base or Access Point on and connected to a PC or the Internet, the user will press and hold the button near the LED window until the LED starts to flash. It will flash slowly at first, then rapidly flash when a Beacon is seen (from a Repeater or Base/AP), then finally illuminates for 10 seconds when it successfully communicates with the network. If configuration changes are required, the case can be opened and the Serial header inserted into J4 (with the black/green lead toward the center of the board). Once changes are made, a “reset” command is issued to restart the MDT/Sensor. All changes are stored in non-volatile memory and will survive a battery change or power off. Button Usage (for MDT/Sensor and Repeater) When a unit is off, press and hold for three or four seconds to turn on. LED starts to flash When unit is on, press and hold for three or four seconds to turn off. LED will be off A single press can indicate the state of the unit Constant on LED for 10 seconds means unit successfully communicating to network Single LED flash indicates the unit is on but not communicating with the network Double LED flash indicates the unit is OFF A double press when the unit is on and Connected will trigger an immediate data transmission Device Placement With the Base Unit plugged into t…

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

Block Diagram

Micro Internal LC Oscillator 8MHz 900MHz RFIC 25K to 100K baud FSK 32.736 KHz Crystal Sensor Inputs Data & Control 12.8 MHz Crystal Common Vcc Serial 1 SPI 2 Notes:1: Serial Header use for engineering and test use only . Header is not installed in Production Units2: SPI port used to program Micro at production test.Header is not installed in Production units RFM TRC103 +28 dBm Output SA W Filter TxD RxD SPI Bus ATMega 644 TW -101 "Repeater" Block Diagram 902-928MHz Frequency Hopping Radio, +28dBm output T ehama Wireless Design Group 423 T ehama Street San Francisco, CA 94103 Power Amp RF Switches Switching Regulator LiOn Battery Linear LT3566 5V in

Cover Letter(s)

Letter of Authorization Company: Tehama Wireless Design Group Address: 423 Tehama Street Product Name: Sensor/Transceiver Model Number: TW-101 We authorize MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566, USA, to act on our behalf on all matters concerning the above named equipment. This shall include the following: - Testing - Approval applications and procedures - Payment of approval fees We declare that MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566, USA, is allowed to forward all information related to the approval project to the applied notified body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Name: James Orton Date: 11/3/2010 Title: President ____________________________ Signature of applicant

Cover Letter(s)

Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 11/3/2010 Request for Confidentiality Company name: Tehama Wireless Design Group FCC ID: TS4-TW-101 FCC Part 15.247 Certification Gentlemen, In accordance with 0.459 of CFR 47, Tehama Wireless Design Group hereby requests confidentiality of the following attachments for the subject application: 1. Schematic Drawings 2. Bill of Materials 3. Operational Description These documents contain detailed system and equipment description and related information about the product that Tehama Wireless considers to be proprietary, confidential and a custom design and otherwise would not release to the general public. Since the design is a basis from which future technological products will evolve, Tehama Wireless considers that this information would be of benefit to its competitors and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Sincerely, James Orton President Tehama Wireless Design Group

External Photos

the wireless lab 22 December 2010 External Photographs Tehama Wireless TW 101 External View Front MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566 Tel: +1 (925) 462-0304, Fax: +1 (925) 462-0306, Web: www.micomlabs.com the wireless lab External view back Page 2 of 2

Internal Photos

the wireless lab 22 December 2010 Internal Photographs Tehama Wireless TW 101 Internal View MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566 Tel: +1 (925) 462-0304, Fax: +1 (925) 462-0306, Web: www.micomlabs.com the wireless lab Internal View Front Page 2 of 3 the wireless lab Internal View Back Page 3 of 3

Parts List/Tune Up Info

0.45 in 2.15 in TW -100, TW -101 Antenna Diagram 902-928MHz Frequency Band T ehama Wireless Design Group 423 T ehama Street San Francisco, CA 94103 Material is 1oz Copper over fi berglass T otal length is 1/4 wave at 915MHz, or 0.2618 inches

RF Exposure Info

MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566 Tel: +1 (925) 462-0304, Fax: +1 (925) 462-0306, Web: www.micomlabs.com the wireless lab Maximum Permissible Exposure FCC, Part 15 Subpart C §15.247(i) Industry Canada RSS-Gen §5.5 Calculations for Maximum Permissible Exposure Levels Power Density = Pd (mW/cm 2 ) = EIRP/(4πd 2 ) EIRP = P * G P = Peak output power (mW) G = Antenna numeric gain (numeric) d = Separation distance (cm) Numeric Gain = 10 ^ (G (dBi)/10) Because the EUT belongs to the General Population/Uncontrolled Exposure the limit of power density is 1.0 mW/cm2 Freq. Band Antenna Gain Peak Output Power Antenna Gain EIRP Distance @ 1mW/cm2 Minimum Separation Distance (MHz) (dBi) (dBm) (numeric) (mW) Limit(cm) (cm) 2400 - 2483.5 2.15 28.59 1.6405898 1185.779.72 20 *Note: for mobile or fixed location transmitters the minimum separation distance is 20cm, even if calculations indicate the MPE distance to be less. Specification Maximum Permissible Exposure Limits §15.247(i) Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency levels in excess of the Commission’s guidelines. FCC §1.1310 Limit = 1mW / cm 2 from 1.310 Table 1 RSS-Gen §5.5 Before equipment certification is granted, the applicable requirements of RSS-102 shall be met. Laboratory Measurement Uncertainty for Power Measurements Measurement uncertainty ±1.33 dB

Test Report

COVER PAGE Test of Teh ama Wireless TW101 To: FCC 47 CFR Part15.247 & IC RSS-210 Test Report Serial No.: TEHA01-U2 Rev A TITLE PAGE TEST REPORT FROM Test of Tehama Wireless TW101 To FCC 47 CFR Part15.247 & IC RSS-210 Test Report Serial No.: TEHA01-U2 Rev A This report supersedes: None Manufacturer: Tehama Wireless 423 Tehama Street San Francisco California 94103, USA Product Function: Repeater / Access Point Copy No:pdf Issue Date: 11th January 2011 MiCOM Labs is an ISO 17025 Accredited Testing Laboratory This Test Report is Issued Under the Authority of; MiCOM Labs, Inc. 440 Boulder Cour t, Suite 200 Pleasanton, CA 94566 USA Phone: +1 (925) 462-0304 Fax: +1 (925) 462-0306 www.micomlabs.com TESTING CERTIFICATE #2381.01 This test report may be reproduced in full only. The document may only be updated by MiCOM Labs personnel. Any changes will be noted in the Document History section of the report. Title: Tehama Wireless TW101 To: Serial #: Issue Date: Page: FCC 47 CFR Part15.247 & IC RSS-210 TEHA01-U2 Rev A 11th January 2011 3 of 98 This test report may be reproduced in full only. The document may only be updated by MiCOM Labs p ersonnel. Any changes will be noted in the Document History section of the report. MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566 USA, Phone: 925.462.0304, Fax: 925.462.0306, www.micomlabs.com This page has been left intentionally blank Title: Tehama Wireless TW101 To: Serial #: Issue Date: Page: FCC 47 CFR Part15.247 & IC RSS-210 TEHA01-U2 Rev A 11th January 2011 4 of 98 This test report may be reproduced in full only. The document may only be updated by MiCOM Labs p ersonnel. Any changes will be noted in the Document History section of the report. MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566 USA, Phone: 925.462.0304, Fax: 925.462.0306, www.micomlabs.com TABLE OF CONTENTS ACCREDITATION, LISTINGS & RECOGNITION ..........................................................5 RECOGNITION................................................................................................................ 6 PRODUCT CERTIFICATION........................................................................................... 7 1. TEST RESULT CERTIFICATE .................................................................................9 2. REFERENCES AND MEASUREMENT UNCERTAINTY ......................................10 2.1. Normative References .......................................................................................... 10 2.2. Test and Uncertainty Procedures ......................................................................... 10 3. PRODUCT DETAILS AND TEST CONFIGURATIONS ........................................11 3.1. Technical Details .................................................................................................. 11 3.2. Scope of Test Program ......................................................................................... 12 3.3. Equipment Model(s) and Serial Number(s) .......................................................... 16 3.4. Antenna Details .................................................................................................... 16 3.5. Cabling and I/O Ports ........................................................................................... 16 3.6. Test Configurations............................................................................................... 17 3.7. Equipment Modifications....................................................................................... 17 3.8. Deviations from the Test Standard ....................................................................... 18 3.9. Subcontracted Testing or Third Party Data .......................................................... 18 4. TEST SUMMARY ....................................................................................................19 5. TEST RESULTS ......................................................................................................21 5.1. Device Characteristics .......................................................................................... 21 5.1.1. 20 dB Bandwidth ....................................................................................... 21 5.1.2. Transmitter Channels - Channel Spacing ............................................... 30 5.1.3. Transmitter Channels................................................................................ 36 5.1.4. Output Power ............................................................................................ 43 5.1.5. Maximum Permissible Exposure............................................................... 46 5.1.6. Conducted Spurious Emissions Transmitter ............................................. 47 5.1.7. Conducted Spurious Emissions Stand-By ................................................ 57 5.1.8. Radiated Emissions - Transmitter and Receiver....................................... 60 5.1.9. Radiated Spurious Emissions – Digital Emissions.................................... 81 5.1.10. AC Wireline Conducted Emissions (150 kHz – 30 MHz) .......................... 90 6. PHOTOGRAPHS.....................................................................................................93 6.1. General Measurement Test Set-Up ...................................................................... 93 6.2. Radiated Emissions >1 GHz................................................................................. 94 6.3. Radiated Emissions <1 GHz................................................................................. 95 6.4. AC Mains Conducted Emissions .......................................................................... 96 7. TEST EQUIPMENT DETAILS.................................................................................97 Title: Tehama Wireless TW101 To: Serial #: Issue Date: Page: FCC 47 CFR Part15.247 & IC RSS-210 TEHA01-U2 Rev A 11th January 2011 5 of 98 This test report may be reprodu…

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Test Setup Photos

the wireless lab 22 December 2010 Test Setup Photographs Tehama Wireless TW 101 General Measurement Test Set-Up MiCOM Labs, 440 Boulder Court, Suite 200, Pleasanton, CA 94566 Tel: +1 (925) 462-0304, Fax: +1 (925) 462-0306, Web: www.micomlabs.com the wireless lab Radiated Emissions >1 GHz Page 2 of 4 the wireless lab Radiated Emissions <1 GHz AC Mains Conducted Emissions Page 3 of 4 the wireless lab AC Mains Conducted Emissions Page 4 of 4

Contact Information

Applicant

James Orton(President)
[email protected]415-495-7344Fax: 415-495-7314

Technical Contact

Tehama Wireless Design GroupJames L Orton
[email protected]415-495-7344

423 Tehama Street · San Francisco · United States

Test Firm

Micom LabsGordon Hurst
[email protected]925-462-0304Fax: 925-462-0306

Technical Specifications

#Rule PartsFrequency RangePower OutputEmissionTolerance
415C914.9 MHz - 926 MHz723.00 mW127KF1D20 ppm
Confidentiality
Long Term
Grant Notes
Output Power listed is conducted. Must not be co-located with any other antenna or transmitter.

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