OZR809-3544RF external ambient sensor

026-1702 Rev 0 10-30-00 Radio Frequency (RF) Temperature Sensor System Installation and Operation Manual 1640 Airport Road, Suite 104 Kennesaw, GA 31044 Phone: (770) 425-2724 Fax: (770) 425-9319 ALL RIGHTS RESERVED. The information contained in this manual has been carefully checked and is believed to be accurate. However, Com- puter Process Controls, Inc. assumes no responsibility for any inaccuracies that may be contained herein. In no event will Computer Process Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential damages resulting from any defect or omission in this manual, even if advised of the possibility of such damages. In the interest of continued product development, Computer Process Controls, Inc. reserves the right to make improvements to this manual, and the products described herein, at any time without notice or obligation. FCC COMPLIANCE NOTICE NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a res- idential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guar- antee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna -- Increase the separation between the equipment and the receiver -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected -- Consult the dealer or an experienced radio/TV technician for help READ ALL INSTRUCTIONS CAREFULLY before attempting to install or operate the RF Sensor Sys- tem. SAVE THIS INSTRUCTION MANUAL — This instruction manual contains important operating instruc- tions for the RF Sensor System. Warning! FCC Regulations state that any unauthorized changes or modifications to this equipment not expressly ap- proved by the manufacturer could void the user's authoriza- tion to operate this equipment. Table of Contents • 1 Table of Contents 1 OVERVIEW ................................................................................................................................................................... 1 1.1. S YSTEM D ESCRIPTION .................................................................................................................................................. 1 1.2. H ARDWARE C OMPONENTS ........................................................................................................................................... 3 1.2.1. Sensors .................................................................................................................................................................. 3 1.2.1.1. RF Ambient Temperature Sensors...................................................................................................................................... 3 1.2.1.2. RF Long-Range Ambient Sensors ...................................................................................................................................... 4 1.2.1.3. RF Product Simulator ......................................................................................................................................................... 4 1.2.2. RF Receiver ........................................................................................................................................................... 5 1.2.3. RF Gateway........................................................................................................................................................... 5 1.2.4. Hand-Held Terminal ............................................................................................................................................. 6 2 INSTALLING THE RF GATEWAY........................................................................................................................... 7 2.1. M OUNTING THE RF G ATEWAY ..................................................................................................................................... 7 2.2. P OWERING THE RF G ATEWAY ..................................................................................................................................... 7 2.3. W IRING THE RF G ATEWAY TO A CPC S ITE C ONTROLLER (I/O N ETWORK )................................................................ 8 2.3.1. Wire Connection ................................................................................................................................................... 8 2.3.2. Setting the Board Numbering Dip Switch ............................................................................................................. 8 2.3.3. Setting the Baud Rate Dip Switch ......................................................................................................................... 9 2.3.4. Setting the RS485 I/O Termination Jumpers......................................................................................................... 9 2.4. N ETWORKING G ATEWAYS AND R ECEIVERS (T OKEN R ING N ETWORK ) ..................................................................... 10 2.4.1. Wiring the Token Ring Network to the Gateway................................................................................................. 10 2.4.2. Setting the Token Ring Network Termination Jumpers ...................................................................................... 10 3 INSTALLING THE RF RECEIVER..............................…

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Linx TXM-418-LC-R Helical Antenna Soldered to PCB 32.768kHz Crystal Fixed Attenuation T-Pad Output Filter 418.02+/-.06MHz SAW Resonator RF Amp V ain V ref ADS7822E A/D Int/Ext Thermistor Ferrite (for External Sense) Ferrite (for External Sense) DS 2417 Clock Service Pin INTData Data Input Wake Input Time Input Clean/Defrost Input Clean/Defrost Switch Ferrite for External Defrost/Clean 4MHz Resonator MCHC705K1 Microprocessor Digital Temperature Data (12 bits) Status LED Data Output (ID, Temp, and two flag bits, start and stop bits, CRC) 809-35xx RF Temperature Sensor LED Driver

The 809-35xx RF sensors are composed of four major functional blocks: the user interface, a temperature measuring block, a time keeper and microprocessor block, and the RF transmitter block. The user interface is composed of two switches and an LED. One of the switches is denoted as the service pin. It has three functions: it turns the sensor on, if held for ten seconds it turns the sensor off, and if pressed momentarily when t he sensor is on, it will transmit the temperature with the ser vice pin flag set, provided that the last transmission was more than ten seconds ago. The other switch is the clean/defrost termination switch. It allows the user to set a flag that the area controller can interpret to ignore the transmitted data. The LED is used to provide feedback to the user on whether the sensor is on and/or in clean mode. It will also flash when a successf ul service pin message is transmitted. The temperature measuring block is composed of a thermistor and a 24.9K resistor set up as a voltage divider. This voltage is read by a 12-bit A/D converter and transmitted as counts to the time keeper and microprocessor block. The time-keeper and microprocessor block is composed of a DS2417 time keeper and a Motorola MC68HC705KJ1CDW. The DS2417 keeps track of the time between transmissions and controls the reset line to the Motorola microprocessor. When the DS2417 determines that a transmission is required [either the clock has elapsed the predetermined transmission period (set by jumper JP1 to either one minute or three minutes) or the service pin has been depressed and the last transmission was at least 10 seconds ago], it wakes up the Motorola microprocessor, measures the temperature, checks the flags, and sends the data to the RF transmitter block via a serial interface using inverted NRZ with 1 start bit, 8 data bits, and 1 stop bit. The RF transmitter block is composed of a Linx Technologies TXM-418-LC-R transmitter operating at 418MHz, an attenuation T-pad composed of three SMD resistors, and a helical antenna soldered parallel to the PCB. The ground plane covers the entire bottom of the PCB with the exception of the area directly under the helical antenna (1.7” x1.2”).

RF Emissions Test Report To Determine Compliance With: FCC, Part 15 Rules and Regulations Model numbers: 809-3544 November 20, 2000 Manufacturer: Computer Process Control 1640 Airport Rd Suite 104 Kennesaw, GA 30144 EMC Testing Laboratories, Inc. authorizes the above company to reproduce this report provided it is reproduced in its entirety EMC Testing Lab. (770) 781-9228 Test report no. 00-203A Page 2 of 2 2 0 0 Contents Section General Information .......................................................................1 Test Summary..................................................................................2 Standard Reference ........................................................................3 Test Method ..........................................................................4 Radiated Out of Band Emissions Measurements ...........................5 Fundamental Frequency Radiated Emissions Measurements .........6 Occupied Bandwidth Measurements .............................................. 7 Configuration and ..................................................................8 EMC Testing Lab. (770) 781-9228 Test report no. 00-203A Page 3 of 2 2 0 0 Section 1 General Information Manufacturer: Computer Process Control 1640 Airport Rd Suite 104 Kennesaw, GA 30144 Manufacturer representative:Mr. Scott Gelber Equipment covered by this report: Model no. 809-3544 Options covered by this report: None Equipment serial no. Prototype Test specifications: To determine compliance with: FCC, Part 15, Subpart C Rules and Regulations, Class B Test report number: 00-203A Test commenced: November 14, 2000 Test completed: November 14, 2000 Test engineer:Kent Stewart Test Facility: The test facility used to perform these tests is on file with the FCC under file 31040/SIT, 1300F2 and located at: EMC Testing Laboratories, Inc. 2420 Oak Street West Cumming, GA. 30041-6456 EMC Testing Lab. (770) 781-9228 Test report no. 00-203A Page 4 of 2 2 0 0 Section 2 Test report summary sheet 1 of 3 Summary: TestsResults FCC, Part 15, Class B, Radiated emissions: Pass FCC, Part 15, Class B, Conducted emissions: N/A 1- The product(s) covered by this report was found to comply with the limits indicated in paragraphs 15.109 Subpart B and 15.231, Part 15, Subpart C of the FCC Rules and Regulations. Additionally, since the equipment covered by this report is designed to periodically transmit data the alternative limits indicated in (e) of paragraph 15.231 were used. Note: The conducted emissions test was not performed since the EUT is battery operated with no means for connection to public mains. Product description: The product(s) covered by this report consisted of a model 809-3544, battery operated temperature transmitter, intended for use with refrigeration equipment. Model 809-3542 is an intentional radiator operating at 418MHz and is programmed to transmit once every 3 minutes. The transmit duration is 18.8 mS maximum (on time). The equipment utilizes a maximum 10.42% duty cycle. The enclosure is constructed of plastic with overall dimensions measuring 7.8cm deep by 7.8cm wide by 3.8cm high and encloses the following components judged as critical: 1. A printed wiring board, manufactured by Computer Process Controls, part no. 537-3544, Rev. 1.50. 2. An RF module, manufactured by Linx, part no. TX-418-LC-R. 3. Two unshielded integral cables. One cable is terminated with a thermistor (thermistor cable) and the other cable is for connection to a switch (clean switch cable). EMC Testing Lab. (770) 781-9228 Test report no. 00-203A Page 5 of 2 2 0 0 Test report summary sheet 2 of 3 Test configuration: The equipment under test was set-up and configured as specified by the manufacturer. 1- The EUT was connected to the following support peripherals. A) None 2- The EUT was connected to the following cables. A) An unshielded, integral thermistor cable terminated with a thermistor. B) An unshielded, integral clean switch cable was left unterminated. Test operation: For all measurements, the equipment under test was and caused to function in a continuous mode of operation for maximum electrical activity as specified by the manufacturer. Specifically, during the intentional radiator measurement the EUT’s transmitter was put in a CW mode. Modifications: The following modifications were required to comply with the indicated limits: 1- The manufacture added a T-pad to attenuate the transmitter output by 4dB. To accommodate adding the T-pad, ground plane space was added to the trace layout. Additionally, the trace widths of the transmitter output were increased and a capacitor in the transmitter vicinity was moved for assembly purposes. 2- The “clean switch” and “thermocouple” cables were looped through a ferrite manufactured Steward, part number 28A2029-OAO. The ferrite was placed as close as possible to the enclosures cable exit. EMC Testing Lab. (770) 781-9228 Test report no. 00-203A Page 6 of 2 2 0 0 Test report summary sheet 3 of 3 Conclusion: With the above indicated modifications, the product(s) covered by this report has been tested and found to comply with the limits indicated in paragraph 15.231 table (e) of the FCC, Part 15, Subpart C Rules and Regulations and all subsequent limits indicated therein for a class B device. Tested by:Reviewed by: Kent StewartGene J. Bailey Laboratory ManagerEngineering Manager EMC Testing Laboratories, Inc.EMC Testing Laboratories, Inc. November 20, 2000November 20, 2000 EMC Testing Lab. (770) 781-9228 Test report no. 00-203A Page 7 of 2 2 0 0 Section 2 cont... This page intentionally left blank. (Reserved for future use) EMC Testing Lab. (770) 781-9228 Test report no. 00-203A Page 8 of 2 2 0 0 Section 3 STANDARD REFERENCE The following primary standards were used for this test: 1) ANSI C63.4-1992: Method of Measurements of Radio-Noise Emissions from Low- Voltage Electrical and Electronic Equipment in the 9 Khz to 40 Ghz. 2) US Code of Federal Regulations (CFR) 1998: Title 47, Part 1…

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