Corometrics Model 340 SERVICE MANUAL MANUAL P/N 2006920-001 REV.
Corometrics Model 340 SERVICE MANUAL MANUAL P/N 2006920-001 REV.
GUARANTEE All equipment sold by GE Medical Systems Information Technologies, is fully guaranteed as to materials and workmanship for a period of 1 year. Information Technologies reserves the right to perform guarantee service operations in its own factory, at an authorized repair station, or in the customer’s installation.
Contents Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Preface Overview of Telemetry Systems . . . . . . . . . . . . . . . . . . . . ix About Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x Model 340 Original Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Product Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 3 Controls, Indicators, and Connectors . . . . . . . . . . . . . . . 3-1 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 FCC Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Receiver Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Accessing the Receiver Board . . . . . . . . . . .
For your notes iv Model 340 Telemetry System 2006920-001 Revision A
Figures Figure 1-1. Model 340 or Model 340 Plus REF Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi Figure 1-2. Model 340M REF Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii Figure 3-1. Receiver Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2 Figure 3-2. Receiver Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For your notes
Tables Table 1-1. Definitions of Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3 Table 1-2. Equipment Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8 Table 1-3. FCC Rules Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9 Table 2-1. Summary of Monitor Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For your notes
Preface Overview of Telemetry Systems 1 This chapter provides an overview of the 340 Series of telemetry systems: About Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x Identifying Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview of Telemetry Systems: About Your System About Your System Due to continuing product innovations, there are three versions of the Model 340 Telemetry System in hospitals today. All three versions operate identically from a user’s perspective. Unless otherwise indicated, the information in this manual applies to all three devices. Model 340 Original Release The first release of the Model 340 Telemetry System operates in the frequency range 430–470 MHz.
Overview of Telemetry Systems: Identifying Your System Identifying Your System Each GE Medical Systems Information Technologies device has a unique serial number tag for identification. For each Model 340 Telemetry System, a reference number can be used to determine if the unit is a Model 340 Original Release, Model 340 Plus, or Model 340M. If your device’s REF number begins with “0”, refer to “Identifying Model 340 Original Release and Model 340 Plus Telemetry Systems” next on this page.
Identifying a Model 340M Telemetry System If your device’s REF number beings with “3”: u the third character identifies receiver or transmitter u the fourth character identifies Model 340M Refer to Figure 1-2. Product Code Catalog Number Other Device Characteristics 34_M _ _ _ - _ _ _ _ _ _ 1 = Telemetry Receiver 2 = Telemetry Transmitter Option/Language/Voltage Specifiers Three to six characters that further describe the unit. M = Model 340 Medical Figure 1-2.
Chapter 1 ! 1 Safety The information presented in this section is important for the safety of both the patient and operator and also serves to enhance equipment reliability. This chapter describes how the terms Danger, Warning, Caution, Important, and Note are used throughout the manual. In addition, standard equipment symbols are defined. This section includes the following important information: General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety: General Information General Information General Use If any equipment is cold to the touch or below ambient temperature, allow it to stabilize before use. To ensure patient safety, use only parts and accessories manufactured or recommended by GE Medical Systems Information Technologies. Parts and accessories used shall meet the requirements of IEC 601.1.1. Disposable devices are intended for single use only. They should not be reused.
Safety: Definitions of Terminology Definitions of Terminology Six types of special notices are used throughout this manual. They are: Danger, Warning, Caution, Contraindication, Important, and Note. The warnings and cautions in this safety section relate to the equipment in general and apply to all aspects of the equipment. Be sure to read the other chapters because there are additional warnings and cautions which relate to specific features of the equipment.
Safety: Equipment Safety Information Equipment Safety Information Warnings :$51,1*6 ACCIDENTAL SPILLS—In the event that fluids are accidentally spilled on the equipment, take the equipment out of operation and inspect for damage. APPLICATION—This equipment is not designed for direct cardiac connection. CONDUCTIVE CONNECTIONS—Avoid making any conductive connections to applied parts (patient connection) which are likely to degrade safety.
Safety: Equipment Safety Information :$51,1*6 ELECTROSURGERY—The equipment is not designed for use with high-frequency surgical devices. In addition, measurements may be affected in the presence of strong electromagnetic sources such as electrosurgery equipment. EXPLOSION HAZARD—Do not use this equipment in the presence of flammable anesthetics or inside an oxygen tent. GROUNDING—Do not defeat the three-wire grounding feature of the power cord by means of adaptors, plug modifications, or other methods.
Safety: Equipment Safety Information :$51,1*6 LINE ISOLATION MONITOR TRANSIENTS—Line isolation monitor transients may resemble actual cardiac waveforms, and thus cause incorrect heart rate determinations and alarm activation (or inhibition). MRI USE—Do not use the equipment during MRI scanning; conducted current could potentially cause burns. PATIENT CABLES AND LEADWIRES—Do not use patient cables and electrode leads that permit direct connection to electrical sources.
Safety: Equipment Safety Information Cautions &$87,216 ANNUAL SERVICING—For continued safety and performance of the equipment, it is recommended that the calibration, accuracy, and electrical safety of the equipment be verified on an annual basis by an Information Technologies Service Representative. DAILY INSPECTION—It is essential that the equipment and accessories be inspected prior to every use.
Safety: Equipment Symbols Equipment Symbols The following is a list of symbols used on products manufactured by Information Technologies. Some symbols may not appear on your equipment. Table 1-2. Equipment Symbols ! ATTENTION: Consult accompanying documents. TYPE B EQUIPMENT. Type B equipment is suitable for intentional external and internal application to the patient, excluding direct cardiac application. TYPE BF EQUIPMENT.
Safety: FCC Information FCC Information FCC Rules Compliance This equipment complies with the FCC rules shown in Table 1-3. (Refer to “Identifying Your System” on page xi for information about identifying what type of telemetry system you have in your hospital.) Operation is subject to the condition that this device does not cause harmful interference. Table 1-3.
Safety: FCC Information Wireless Medical Telemetry Service This section applies to Model 340M Telemetry Systems only. Refer to “Identifying Your System” on page xi for information about identifying what type of telemetry system you have in your hospital. ,03257$17 Operation of a Model 340M Telemetry System requires prior coordination with a frequency coordinator designated by the FCC for the Wireless Medical Telemetry Service.
Chapter 2 Introduction 2 This chapter contains the following information: Product Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction: Product Summary Product Summary The Corometrics Model 340 Telemetry System (receiver and transmitter) provides a wireless means of transmitting heart rate and uterine activity signals from an ambulatory mother to a bedside fetal or maternal/fetal monitor. The system operates with the following Corometrics brand monitors; if your monitor is not listed, check with your saleperson or service representative for a more current list.
Introduction: Product Features Product Features The following is a summary of product features: n Battery operated transmitter provides up to 20 hours* of continuous transmission when operated with fresh batteries. n A Low Battery indicator, accompanied by an audio indicator, signals an impending low-battery condition. n A transmitter headset* allows the patient or staff to hear the ultrasonically detected heartbeats for reassurance as well as to verify proper transducer placement.
For your notes 2-4 Model 340 Telemetry System 2006920-001 Revision A
Chapter 3 Controls, Indicators, and Connectors 3 This section describes all controls, indicators, and connectors on a Model 340 Telemetry System. Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls, Indicators, and Connectors: Receiver Receiver Receiver Front Panel 340 Telemetry Receiver E + D TOCO IUP XXX A ~ C B Figure 3-1.
Controls, Indicators, and Connectors: Receiver Table 3-1. Receiver Front Panel Name Description This switch communicates the active uterine activity mode to the fetal or maternal/fetal monitor: A UA Mode Selector Switch n When monitoring with a tocotransducer, set the switch to the TOCO position. n When monitoring with an intrauterine pressure catheter, set the switch to the IUP position. B Channel Number The channel number is the customer-designated receiving frequency of the receiver.
Controls, Indicators, and Connectors: Receiver Receiver Rear Panel E ! D WARNING: TO REDUCE FIRE HAZARD REPLACE FUSE AS MARKED. ~ 120Vac A ANTENNA ULTRASOUND 120V ~ 50-60HZ 30W 0.25A SLOW BLOW ECG UA CONNECT TO COROMETRICS MONITORS ONLY CAUTION OUTPUTS TO MONITOR ! B C Note: Antenna shown removed. Figure 3-2.
Controls, Indicators, and Connectors: Receiver Table 3-2. Receiver Rear Panel Name Description This module houses the AC-line input connector and the main fuses for the receiver: A AC Line Connector and Fuseholder Module n 100–120 VAC: requires two, 0.25 A slow-blow fuses. n 220–240 VAC: requires two, 0.2 A time-lag fuses. This connector is used with 120 and 170 Series Monitors only. Do not use this connection method for Models 115, 116, 118, 145, 150, 151, and 155 Monitors.
Controls, Indicators, and Connectors: Transmitter Transmitter Transmitter Bottom Panel C B A Figure 3-3.
Controls, Indicators, and Connectors: Transmitter Table 3-3. Transmitter Bottom Panel Name Description Connect a Corometrics 5700 Series pulsed Doppler ultrasound transducer to this light gray receptacle. A Revision A Ultrasound Input Corometrics 5600 Series continuous-wave ultrasound transducers are not compatible with the Model 340 Telemetry System. The 5600 Series Transducer was designed for use with Models 115 and 145 Monitors and Models 320 and 330 Telemetry Systems.
Controls, Indicators, and Connectors: Transmitter Transmitter Top Panel A B C D E A Note: Antenna shown removed. Figure 3-4.
Controls, Indicators, and Connectors: Transmitter Table 3-4. Transmitter Top Panel Name Description A Loops Loops for attaching the carrying strap. B Headset Connector Connect the headset to this receptacle to listen to the fetal heart rate derived from ultrasound. Connect a Corometrics Remote Event Marker to this receptacle.
Controls, Indicators, and Connectors: Transmitter Transmitter Rear Panel Battery Compartment Battery Compartment ! BATTERY COMPARTMENT DANGER: POSSIBLE EXPLOSION HAZARD IF USED IN THE PRESENCE OF FLAMMABLE ANESTHETICS. CAUTION: REFER SERVICE ONLY TO QUALIFIED PERSONNEL Figure 3-5. Transmitter Rear Panel Battery Compartment The battery compartment holds four “AA” alkaline batteries. &$87,21 BATTERY STRENGTH—When the battery power is low, the transmitter emits a chirping sound every 4–5 seconds.
Chapter 4 Theory of Operation 4 This section of the manual contains the electronic theory for the Model 340 Maternal/Fetal Telemetry System. The Model 340 Telemetry System is comprised of a receiver and a transmitter. The electronic theory for the transmitter (Transmitter Board and Transmitter Carrier Board) and receiver (Receiver Board and Receiver Carrier Board) is presented. For complementary information, refer to the schematics and assembly drawings contained in Chapter 9 of this manual.
Theory of Operation: Transmitter Board (No. 2003708-001) Transmitter Board (No. 2003708-001) Ultrasound The operation of the ultrasound circuitry is controlled by a CMOS programmable logic device (CPLD). This CPLD also contains the active circuitry used to form a 4.604 MHZ crystal oscillator, which is the main system clock from which all board logic timing is derived. The fourth division (1.151 MHZ) is the operating frequency of the ultrasound transducer.
Theory of Operation: Transmitter Board (No. 2003708-001) Following the pre-amp is a buffer amplifier and transformer combination. The buffer stage is unity gain and is used to establish a high impedance for the pre-amp output. The transformer converts the single ended pre-amp output to differential for the demodulator that follows. The demodulator circuit is composed of a quad FET switch, a difference amplifier, and a sample-and-hold circuit.
Theory of Operation: Transmitter Board (No. 2003708-001) UA The UA circuitry on the Transmitter Board consists of an instrumentation amplifier, a secondary amplifier stage, a voltagecontrolled oscillator (VCO), and an active low-pass filter. The instrumentation amplifier is used both to amplify and to convert the differential output of a TOCO bridge or IUP device to single ended. This stage is set for a gain of 100.
Theory of Operation: Transmitter Board (No. 2003708-001) Control Circuitry Mode information, along with battery status and remote mark data, is transmitted to the receiving unit by use of individual low-frequency tones. These tones are generated by counters contained within the CPLD and are a division of the main clock.
Theory of Operation: Transmitter Board (No. 2003708-001) Power Supply The main power supply for this system is a boot converter/regulator. This switcher converts the battery voltage to a regulated 6.5 V over a battery range of 3 to 6 V. The switching frequency of this regulator is synchronized to a division of the main clock (575 kHz) to reduce noise that might interfere with operation of the ultrasound circuit. A regulated –6V supply is generated off this supply using a charge pump/regulator.
Theory of Operation: Telemetry Receiver Board Circuitry (No. 13856A) Telemetry Receiver Board Circuitry (No. 13856A) The RF Receiver The RF receiver used by the Telemetry Receiver Board provides both the encoded modulation from the transmitter, as well as a voltage output that is proportional to the RF signal level received. The signal level output from the RF receiver is connected to a pair of comparators configured as a threshold detector and monostable.
Theory of Operation: Telemetry Receiver Board Circuitry (No. 13856A) Receiver Encoded Modulation The encoded modulation from the receiver is divided into several paths: the first to extract the mode information; the second to extract the data signals. Mode information is removed from the composite signal through a three-pole, active, low-pass filter of 100 Hz. After this stage, a gain adjustment and an additional two poles of active low-pass filtering with a gain of four are added.
Theory of Operation: Telemetry Receiver Board Circuitry (No. 13856A) TOCO Channel The TOCO channel includes an additional three poles of active high-pass filtering at 1.5 kHz, followed by three poles of active low-pass filtering at 2.0 kHz, followed by a 1.75 kHz active two pole band-pass filter with a gain of four. The output of this filter chain connect to the input of a PLL circuit consisting of a FSK decoder, a buffer op-amp, and a differential amplifier.
Theory of Operation: Telemetry Receiver Board Circuitry (No. 13856A) Ultrasound Channel The ultrasound channel of the receiver consists of the initial 150 Hz high-pass filter, a three-pole active low-pass filter at 550 Hz, a two-pole active low-pass filter at 600 Hz with a gain of four, a three-pole active high-pass filter at 150 Hz, and the last stage of a three-pole active lowpass filter at 500 Hz. A gain adjustment is inserted between the 550 and 600 Hz low-pass stages.
Theory of Operation: Telemetry Transmitter Carrier Board (2003713-001) Telemetry Transmitter Carrier Board (2003713-001) The Transmitter Carrier Board serves as the connection point for devices used by the system. The remote mark, headphones, antenna, and battery pack are all first routed through this board. Additionally, the transmitter RF module and audio piezo speaker are located on this board.
Theory of Operation: Telemetry Receiver Carrier Board (2004163-001) Telemetry Receiver Carrier Board (2004163-001) The Receiver Carrier Board houses the RF receiver module. Additional circuitry to add gain to the two receiver outputs (audio and RSSI) are also located on this board. A linear regulator is used to reduce the 12 V from the Receiver Board to the 7.6 V required by the RF module.
Chapter 5 Calibration 5 This section of the manual provides a calibration procedure which allows authorized service personnel to perform an instrument alignment using a minimum of test equipment. This procedure is not intended to replace a complete instrument checkout and alignment as performed at the GE Medical Systems Information Technologies factory.
Calibration: FCC Service Information FCC Service Information The UHF Transmitter Module and UHF Receiver Module contained in the Model 340 Telemetry System are GE Medical systems Information Technologies factory service items. ,03257$17 FCC LICENSE—You must have an FCC General Radio Telephone License to service the Model 340 Telemetry System UHF Transmitter Module or UHF Receiver Module.
Calibration: Test Equipment Test Equipment Testing or calibrating the Model 340 requires the use of properly calibrated, laboratory-class, test equipment. Although the generic equivalents of the test equipment are given in this procedure, the actual equipment selected must have specifications that substantially exceed the tolerance given for each measurement. Throughout this chapter, the calibration procedures are augmented by icons representing the type of equipment each procedure requires.
Calibration: Receiver Calibration Receiver Calibration Accessing the Receiver Board When viewing the receiver from the top with its cover removed, the Telemetry Receiver Board is located in the bottom section of the receiver chassis. Accessing the Telemetry Receiver Board requires removal of the top cover. To remove the board: 1. Remove the four receiver RF module mounting screws and disconnect the cables. Do not disconnect the antenna wire that is connected to the BNC connector.
Calibration: Receiver Calibration DC VOLTS Power Supply When checking the power supply voltages in this section, ensure all voltage checks are within their allowable limits at both low and high AC line voltages. 1. Refer to Table 5-1 and confirm the power supply voltages at the indicated test points. Table 5-1. Power Supply Voltages Test Point Power Supply Voltage TP23 +15 ± 0.6 Vdc TP25 –15 ± 0.6 Vdc TP26 +5 ± 0.3 Vdc TP24 –5 ± 0.3 Vdc 2. Confirm the voltage at TP27 is +12 ± 0.
Calibration: Receiver Calibration dB UNITS TOCO Channel AC VOLTS 888 888 888 Hz Generator 888 888 888 Hz Counter 1. Confirm the –3dB points of the band-pass frequency from the input at TP45 to the output at TP29. The lower 3 dB point should measure between 1250 and 1650 Hz. The upper 3 dB point should measure between 1900 and 2250 Hz. The gain at TP29 is 2 at the center of the bandpass. 2.
Calibration: Receiver Calibration dB UNITS ECG Channel AC VOLTS 888 888 888 Hz Generator 888 888 888 Hz Counter 1. Confirm the –3 dB points of the band-pass frequency are at least 2200 Hz and 3000 Hz between the input TP45 and the output TP17. Confirm the filter gain of 2 at center frequency. 2. With input frequency set at 2700 Hz and 250 mVp-p at TP45, adjust R106 until the dc voltage at TP10 is equal to the dc voltage at TP46 ± 10 mVdc. 3.
Calibration: Receiver Calibration dB UNITS AC VOLTS DC VOLTS Mode Controls 888 888 888 Hz Generator 888 888 888 Hz Counter 1. Confirm the low-pass filter –3 dB cutoff point of 90 ± 6Hz with an input of 1.0 Vp-p at TP45 and the output at TP21. Set R61 for a gain of 2.3. 2. Adjust R177 for a frequency of 8020 ± 20Hz at TP32. 3. Confirm a 10 ± 0.1 Vp-p, 4010 ± 20 Hz square wave at TP33. 4.
Calibration: Receiver Calibration 6. Refer to Table 5-4. Confirm each tone decoder output locks. The output will go to a logic low state when a 50 mVRMS sine wave of proper frequency is applied to each input at pin 3 of each IC. Table 5-4. Tone Decoder Output Locks Input C Reference Input Center Frequency and Voltage Output Test Point U26-3 10 Hz at 50 mVRMS TP7 U28-3 20 Hz at 50 mVRMS TP47 U14-3 40 Hz at 50 mVRMS TP48 U21-3 80 Hz at 50 mVRMS TP12 7. Ground TP18.
Calibration: Receiver Calibration Mode Outputs 1. The mode output signals are generated via open collector transistor switches in U2. For test purposes, the outputs must be connected to a fetal monitor via the US, ECG and UA interconnect cables or pulled up to +5 V (TP5) by 10kΩ resistors. 127( When testing the TOCO and IUP mode outputs, the receiver front panel UA mode switch must be in the appropriate position. 2. Refer to Table 5-3. Confirm operation of U2’s internal open collector transistor switches.
Calibration: Receiver Calibration Ultrasound Modulator 1. Connect a 3 Vp-p 2.3 MHz sine wave signal source into J201 pin 1. Connect J201 pin 8 to ground. Feed a 300 Hz, 1 Vp-p sine wave into J6 pin 2, and set R146 to its mid-position. Adjust L1 for maximum output at TP13. L1 should go through a peak and drop off in amplitude on either side of the peak setting. 2. Remove the 300 Hz source, adjust R146 for minimum output at TP13. R146 should go through a null setting with the amplitude rising at either side.
Calibration: Transmitter Calibration Transmitter Calibration UA Channel 1. Connect the positive lead of a 0–4 V adjustable DC lab supply to J5 pin 1 (PRESS+) through a 100 KΩ resistor and the negative lead to J5 pin 2 (PRESS–) and J5 pin 6 (GROUND). Jumper a 100 Ω resistor across J5 pin 1 and J5 pin 2. Add a jumper between J5 pin 12 and J5 pin 7. Preset R197 fully counter-clockwise (maximum resistance), and R196 to approximately the mid-adjustment point. 2. Connect a digital voltmeter to TP18.
Calibration: Transmitter Calibration Main Oscillator Connect the frequency counter to TP7. Adjust C135 for a frequency of 4.604 MHz ± 5 Hz. Power Supply 1. Confirm –5.6 V ± 0.2 V at TP11 2. Confirm +5.8 V ± 0.2 V at TP10 3. Confirm +5.0 V ± 0.25 V at TP16 4. Confirm +2.50 V ± 0.05 V at TP12 5. Confirm –2.50 V ± 0.
For your notes 5-14 Model 340 Telemetry System 2006920-001 Revision A
Chapter 6 Maintenance 6 All equipment, no matter how reliable, needs to be maintained on a regular basis. This section describes general care and cleaning instructions for the Model 340 Telemetry System. General Cleaning Precautions. . . . . . . . . . . . . . . . . . . . . . . . 6-2 Cleaning the Transmitter and Receiver . . . . . . . . . . . . . . . .
Maintenance: General Cleaning Precautions General Cleaning Precautions 127( Refer to your monitor’s operator’s manual for cleaning instructions for the monitor and transducers. 6-2 &$87,21 SHOCK—Unplug the fetal or maternal/fetal monitor and the Model 340R Receiver from the AC power source and detach all accessories. Do not immerse accessories in any liquid. Do not use abrasive cloth or cleaners on the monitor, the Model 340R Receiver, the Model 340T Transmitter, or any accessories.
Maintenance: Cleaning the Transmitter and Receiver Cleaning the Transmitter and Receiver 1. Wipe any fluids from the surface of each unit. 2. Dampen a soft cloth with isopropyl alcohol and gently rub soiled area until clean. 3. Dry with a soft, dry cloth.
For your notes 6-4 Model 340 Telemetry System 2006920-001 Revision A
Chapter 7 Troubleshooting 7 This section of the manual provides a troubleshooting guide for the most basic Model 340 operational problems. If the response to a specific question is not found, contact the Service Department at one of the following telephone numbers: Revision A Inside the United States: Call 1-800-558-5120. Outside the United States: Call 414-355-3790; or contact your local distributor.
Troubleshooting: Problem Chart Problem Chart Table 7-1. Troubleshooting Problem Receiver Power indicator does not light when the receiver is turned on. Probable Cause n Receiver not connected to AC n Connect to AC receptacle. receptacle. n Defective AC power cord. n Defective AC outlet. n Replace AC power cord. n Use a different AC outlet. n Transmitter batteries completely n Replace batteries. Dispose of used discharged. Signal indicator flashes with transmitter turned on.
Troubleshooting: Problem Chart Table 7-1. Troubleshooting (Continued) Problem Probable Cause n Transducer not properly placed. n Transducer not properly connected to transmitter. n Receiver interconnection cable(s) not properly attached. n Receiver interconnection cable(s) defective. n Wrong interconnection cable(s) in use. n Radio frequency interference. Erratic FHR/UA recording. n Another transmitter with the same frequency is in use within the same facility. n Exceeding transmission range.
For your notes 7-4 Model 340 Telemetry System 2006920-001 Revision A
Chapter 8 Technical Specifications8 127( Specifications are subject to change without notice. This section contains a detailed list of the technical specifications for the Model 340 Telemetry System. This chapter lists specifications for the following: Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Specifications: Transmitter Transmitter Table 8-1. Transmitter Category Technical Specifications Physical Characteristics Height: Width: Depth: Weight: 1.8 in (4.5 cm) 5.4 in (13.8 cm) 7.5 in (19.0 cm) 1.75 lbs (0.
Technical Specifications: Transmitter Table 8-1. Transmitter Category Technical Specifications Antenna Type: Flexible, detachable, BNC interconnect Batteries Type: Life: Four “AA” Alkaline Cells, 6.0 Vdc at 2450 mAh 20 h, approximatelya Control: On/Off Switch Audio Indicator: Low Battery Connectors: Remote Event Marker Input, Headset Output a Use of the headset will deplete the batteries more rapidly.
Technical Specifications: Receiver Receiver Table 8-1. Receiver Category Technical Specifications Power Requirements Nominal Line Voltage: Line Frequency: Power Consumption (maximum): Chassis Leakage: 100–120 VAC 50/60 Hz 30 W <50 µ A Physical Characteristics Height: Width: Depth: Weight: 3.2 in (8.1 cm) 7.4 in (18.8 cm) 11.4 in (29.0 cm) 7.0 lbs (3.
Chapter 9 Drawings 9 This section of the manual provies the Model 340 schematics and assembly drawings. These drawings should be used in conjunction with other sections in this manual.
For your notes 9-2 Model 340 Telemetry System 2006920-001 Revision A
MANUAL P/N 2006920-001 Ê2006920-001ÅŠ REV A
