OGE-QTI-EMIDS

THEORY OF OPERATION POWER AMPLIFIER ASSEMBLY Driver Amplifier The driver amplifier section provides the following function. * Amplifies the output signal of the synthesizer. * Matches the low impedance of the power amplifier. * Provides some attenuation of harmonics. Power Amplifier The final power amplifier further amplifies this signal to the specified output level. Low Pass Filter The low pass filter provides the following functions: * Attenuates harmonics by approximately 50 dBm. * Matches the final power amplifier to 50 Ohms. Power Supply The power supply section provides a means of switching DC power to the final stage of the Power amplifier. SYNTHESIZER LO ASSEMBLY Crystal Oscillator A fundamental frequency crystal oscillator is operated in a Colpitts temperature-compensated circuit to give a stability of (2.5 PPM over the operating temperature range. The 12.8 MHz output of the TCVCXO drives the PLL chip. The PLL chip divides this frequency, to establish a reference frequency. This frequency is the reference (frequency) for phase comparison used internally in the chip as well as providing the channel spacing. The low frequency component of the modulating signal is used to modulate of the TCVCXO, for improved DC response. Voltage controlled Oscillator "VCO" The VCO operates at the output frequency and is controlled by applying a voltage to the voltage variable capacitor. The oscillator is tuned to the center of the operating frequency range so the voltage on the capacitor is compatible with the output range of the low pass filter. Phase Locked Loop "PLL" The PLL compares the VCO frequency, divided by the dual-modulus divider and internal dividers, to the reference frequency and outputs a series of correction pulses to the low pass filter to correct the VCO frequency. Dual Modulus Pre-Scalar & Buffer Dual Modulus operation will not be described here, since operation of this circuit is explained in great detail in common technical literature. A simplified explanation of dual modulus circuit operation is that it is an additional frequency divider used by the PLL. The buffer provides isolation to prevent switching spikes from getting back into the VCO and erroneously modulating the output frequency. Modulation Filter The modulation signal is passed through an active filter which attenuates all audio signals above the cutoff frequency, resulting in an improved signal to noise ratio. Modulation Attenuation Circuit The Modulation Attenuation Circuit consists of several resistors that may be switched in and out of the circuit to control the modulation level across the operating bandwidth of the Transmitter. Encoder Microcontroller The microcontroller includes Eprom, EEprom, Ram and various peripheral devices to accomplish the task required of the encoder. Additional Support Circuitry The following are some of the support circuits associated with the encoder: * Sensor Interface circuit. * Power Supply circuit. * User interface circuit (Switches and Pushbutton). * External state of health timer. * Low Battery detection circuit * Low voltage reset circuit. * Serial communications circuit (RS-232).

Qual-Tron : FCC Letter of Authorization

L. S. COMPLIANCE, Inc. Cedarburg, Wisconsin June 4, 1999 To: FCC From: Jim Blaha L. S. Compliance, Inc. Subject:Form 731 – Additional Data and Changes FCC Filing: EA93387 FCC ID#:OGE-QTI-EMIDS Dear FCC, Per the request of Mr. Rich Fabina, the following information is being supplied to up date Form 731 for filing EA 93387. FORM 731 Update Item 10- Equipment Code ... from DSC to TNB - FCC Rule Part ... from Part 15C to Part 90 Item 12- Equipment Specifications Frequency Tolerance ... 5 ppm Emission Designator ... 8K40F3D Microprocessor Number ... MC68HC711E9CFN2 ( Motorola Chip ) Please feel free to call me at your convenience to resolve any additional questions with this filing. Sincerely, Jim Blaha L. S. Compliance, Inc.

Qual-Tron - Mini Intrusion Detection System with Photo Optic Sensor

Qual-Tron - MIDS showing connection panel

Qual-Tron - Close Up of Connections and Antenna Attachment

Qual-Tron - Close Up of inside Battery Compartment

Qual-Tron - One of 4 Batteries Installed

Qual-Tron - FCC ID Label installed inside of Battery Cover

Qual-Tron - Close Up of Attached FCC ID Label

Qual-Tron, Inc. FCC ID Label to be located within the Battery Cover of the Transmitter. Sample Photo of Label within the cover reflects label size and location. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) this device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation. FCC ID : OGE-QTI-EMIDS S/N : 1234567890 MODEL : MMCT MADE IN THE USA Qual-Tron, Inc.

Qual Tron FCC ID Label This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) this device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation. FCC ID : S/N : MODEL : MADE IN THE USA Qual-Tron, Inc.

Qual-Tron: Battery Terminal Board, Transmitter

Qual-Tron: Battery Terminal Board, Transmitter, Foil Side

Qual-Tron: PCB Transmitter Encoder Processor Side

Qual-Tron: PCB Transmitter Encoder Foil Side

Qual-Tron: PCB Decoder, Processor Side

Qual-Tron: PCB Decoder Receiver Foil Side

Qual-Tron: Transmitter Synthesizer, Foil Side

Qual-Tron: Transmitter Synthesizer

Qual-Tron: RF Power Amp

Qual-Tron, Inc. Mini Intrusion Detection System Description & Theory of Operation Power Amplifier Assembly Driver Amplifier The driver amplifier section provides the following function:
Amplifies the output signal of the synthesizer.
Matches the low impedance of the power amplifier.
Provides some attenuation of harmonics. Power Amplifier The final power amplifier further amplifies this signal to the specified output level. Low Pass Filter The low pass filter provides the following functions:
Attenuates harmonics by approximately 50 dBm.
Matches the final power amplifier to 50 Ohms. Power Supply The power supply section provides a means of switching DC power to the final stage of the Power Amplifier. Synthesizer LO Assembly Crystal Oscillator A fundamental frequency crystal oscillator is operated in a Colpitts temperature- compensated circuit to give a stability of 2.5 PPM over the operating temperature range. The 12.8 MHz output of the TCVCXO drives the PLL chip. The PLL chip divides this frequency, to establish a reference frequency. This frequency is the reference (frequency) for phase comparison used internally in the chip as well as providing the channel spacing. The low frequency component of the modulating signal is used to pull the modulate of the TCVCXO, for improved DC response. Voltage Controlled Oscillator "VCO" The VCO operates at the output frequency and is controlled by applying a voltage to the voltage variable capacitor. The oscillator is tuned to the center of the operating frequency range so the voltage on the capacitor is compatible with the output range of the low pass filter. Phase Locked Loop "PLL" The PLL compares the VCO frequency, divided by the dual-modules divider and internal dividers, to the reference frequency and outputs a series of correction pulses tot he low pass filter to correct the VCO frequency. Dual Modulus Pre-Scalar & Buffer Dual Modulus operation will not be described here, since operation of this circuit is explained in great detail in common technical literature. A simplified explanation of dual modulus circuit operation is that it is an additional frequency divider used by the PLL. The buffer provides isolation to prevent switching spikes from getting back into the VCO and erroneously modulating the output frequency. Modulation Filter The modulation signal is passed through an active filter which attenuates all audio signals above the cutoff frequency, resulting in an improved signal to noise ratio. Modulation Attenuation Circuit The Modulation Attenuation Circuit consists of several resistors that may be switched in and out of the circuit to control the modulation level across the operating bandwidth of the Transmitter. Encoder Microcontroller The microcontroller includes Eprom, Eeprom, Ram, and various peripheral devices to accomplish the task required of the encoder. Additional Support Circuitry
The following are some of the support circuits associated with the encoder:
Sensor Interface Circuit
Power Supply Circuit
User Interface Circuit (Switches and Pushbutton)
External State of Health Timer
Low Battery Detection Circuit
Low Voltage Reset Circuit
Serial Communications Circuit (RS-232)

Qual Tron Transmitter Battery Board Schematic

Qual Tron Transmitter Synthesizer Schematic

Qual Tron Transmitter Synthesizer Schematic

Qual Tron Decoder Schematic

Qual Tron Encoder Schematic

Qual Tron Transmitter Battery Board Schematic

Qual Tron Transmitter Power Amp Schematic

L. S. COMPLIANCE, Inc. FCC ID: OGE-QTI-EMIDS LSC QUALTRON 90160Page 1 of 30 COMPLIANCE TESTING OF Qualtron EMIDS SURVEILLANCE TRANSMITER Test Report 90160 Tests performed during March, April, and May 1999 All results of this report relate only to the items that were tested. This report is not to be reproduced, except in full, without written approval of L.S.Compliance, Inc. L. S. COMPLIANCE, Inc. FCC ID: OGE-QTI-EMIDS LSC QUALTRON 90160Page 2 of 30 INDEX DescriptionPage # Description of Measurement Facilities3 Signature Page4 1.1Summary of Test Report5 1.2Introduction6 1.3Purpose6 1.4Radiated Emission Test Setup7 1.5Radiated Emission Test Procedure7 1.6Conducted Emissions8 1.7Power Output8 1.8Conducted spurious Emissions8 1.9Occupied Bandwidth9 1.10Transient Frequency Behavior9 1.11Frequency Stability9 1.12Modulation Characteristics10 1.13Test Equipment Utilized10 1.14Photos taken of testing11 1.15Test Equipment List13 1.16Conclusions13 Appendices ASample Calculations:14 i.Calculation of Radiated Emissions Limits15 BData Charts16 CGraphs20 L. S. COMPLIANCE, Inc. FCC ID: OGE-QTI-EMIDS LSC QUALTRON 90160Page 3 of 30 D ESCRIPTION OF M EASUREMENT F ACILITIES Site on File With the FCC ID Number: 31040/SIT “ The site referenced above has been found to comply with the test site criteria found in ANSI C63.4-1992 and 47CFR Section 2.948.” L. S. COMPLIANCE, Inc. FCC ID: OGE-QTI-EMIDS LSC QUALTRON 90160Page 4 of 30 Prepared/ tested & Approved By: 02 June, 1999 Kenneth L. Boston, EMC Lab ManagerDate PE #31926 Registered Professional Engineer (State of Wisconsin) L. S. COMPLIANCE, Inc. FCC ID: OGE-QTI-EMIDS LSC QUALTRON 90160Page 5 of 30 1.1 S UMMARY OF T EST R EPORT MANUFACTURER:QUAL-TRON, Inc MODEL:EMIDS MMCT SERIAL:pre-production DESCRIPTION:ELECTRONIC SURVEILLANCE DEVICE FREQUENCY RANGE:TRANSMITTER; 154 MHz TO 156 MHz: upon any one of 42 Assigned channels The Qual-tron EMIDS MMCT surveillance transmitter was found to meet the requirements for a certified radio transmitter in the public mobile service. The pertinent sections of Part 2.1033 and part 90 were inspected and the EMIDS product was found to be in compliance with those sections. The device tested is designed to be used by State and Local police departments for the purpose of surveillance of criminal activity. The transmitter is "tripped" by one of any number of sensors, such as an infrared beam or seismic transducer. Upon being tripped, the unit emits a very short coded transmission, which is monitored by a nearby receiver, logging the number and location of "hits". These transmitters are supplied to the purchasing agencies, capable of transmitting on the appropriate public service channels, at a power level of 1 watt. They are typically set to operate on a public service channel assigned by the national frequency coordinator to that user, and operated in a system where the monitoring point would be located nearby to the area being surveilled. L. S. COMPLIANCE, Inc. FCC ID: OGE-QTI-EMIDS LSC QUALTRON 90160Page 6 of 30 1.2 I NTRODUCTION During March, April, and May of 1999, a series of Radiated Emissions tests were performed on a sample model of the A.I.D. Surveillance transmitter. These tests were performed using the test procedures outlined in ANSI/TIA/EIA 603-1-1998 for a low power transmitter in the Public Radio service; as called for in section 2.1033 for a type accepted device, and in accordance with the limits set forth in FCC Part 90.210. Tests of conducted emissions were also performed in order to verify compliance with the limits set forth in part 90.210 and called out in section 2.1033 for a type accepted device. All radiated and conducted emission tests were performed by Kenneth L. Boston PE, of L. S. Compliance, Inc. 1.3 P URPOSE The above mentioned tests were performed in order to determine the compliance of the test sample with limits contained in various provisions of Title 47 CFR, including: 90.2032.10462.1053 90.2102.10492.1055 2.10472.1051 All radiated emissions tests were performed to measure the emissions in the frequency bands described by the above sections, and to determine whether said emissions are below the limits established by the above sections. These tests were performed in accordance with the procedure described in the Telecommunications Industry Association publication, TIA/EIA-603 , February 1993, and the addendum, March 1998. General radiated measurement techniques found in ANSI C63.4 were also utilized. Another document used as reference for the EMI receiver specification was the International Special Committee on Radio Interference (CISPR) number 16- 1 (1993). L. S. COMPLIANCE, Inc. FCC ID: OGE-QTI-EMIDS LSC QUALTRON 90160Page 7 of 30 1.4 R ADIATED E MISSIONS T EST S ETUP The test sample was operated within the 3 meter Semi-Anechoic, FCC listed chamber located at L.S. Compliance in Cedarburg, WI. The sample was placed on an 80cm high wooden table, which was centered on the flush-mounted 2m diameter metal turntable. The test sample was operated on a 9 volt regulator connected to a 12 volt battery, and an appropriate passive antenna, 50 ohm dummy load, was connected to the antenna terminals. The EMIDS occupies several small PC boards which mount into an olive green (military) plastic case, which is oriented flat on the ground during actual operation. Only this orientation was used during the tests, as the unit will power down if set at any other orientation. The test sample was configured to run in a continuous transmit mode during the radiated measurements. This continuous transmit was enabled via a special connectorized serial port on the EMIDS, accessed via a cable to a communication port on a laptop computer running Hyperterminal. The test sample was set to operate on one of two of its characteristic frequencies within the Private Land Mobile frequency assignment (Public safety radio pool): one at the low end of the band (154 MHz), one near the top of the band (155 MHz).Please refer to Section 1.15 fo…

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

Qual-Tron 42 Channel Transmitter Model #MMCT Channel Number with Assigned Frequency Channel NumberFrequency of Channel 00154.650 01154.665 02154.680 03154.695 04154.710 05154.725 06154.740 07154.755 08154.770 09154.785 10154.800 11154.815 12154.830 13154.845 14154.860 15154.875 16154.890 17154.905 18154.920 19154.935 20154.950 21155.415 22155.430 23155.445 24155.460 25155.475 26155.490 27155.505 28155.520 29155.535 30155.550 31155.565 32155.580 33155.595 34155.610 35155.625 36155.640 37155.655 38155.670 39155.685 40155.700 41155.715 42155.730

Qual-Tron MMCT Transmitter Modulation & Frequency Specifications Data Message is 29 ms Modulation is 1200 hz Digital Manchester Encoded Deviation is 3 kHZ