OU5340MTWMTS Transmitter

Corometrics  Model 340 SERVICE MANUALMANUAL P/N 2006920-001 REV. A
 




             



     Corometrics  Model 340 SERVICE MANUALMANUAL P/N 2006920-001 REV. A
 




             



     Corometrics and Marquette are registered trademarks of GE Medical Systems Information Technologies. GE is a registered trademark of General Electric Company. All other product and brand names are trademarks or registered trademarks of their respective companies. ©2001 GE Medical Systems Information Technologies. All rights reserved. No part of this manual may be reproduced without the permission of GE Medical Systems Information Technologies. 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. Our obligation under this guarantee is limited to repairing, or, at our option, replacing any defective parts of our equipment, except fuses or batteries, without charge, if such defects occur in normal service. Claims for damage in shipment should be filed promptly with the transportation company. All correspondence covering the instrument should specify the model and serial numbers. GE MEDICAL SYSTEMS Information Technologies A GE Medical Systems Company Revision A: 04-01 GE Medical Systems Information Technologies will make available on request such circuit diagrams, component diagrams, component parts lists, descriptions, calibration instructions, or other information which will assist the users or appropriately qualified technical personnel to repair those parts of the equipment which are classified by Information Technologies as repairable. Refer to the service manual for further information. CAUTION: In the United States of America, Federal Law restricts this device to sale by or on the order of a physician.
World Headquarters 8200 West Tower Avenue Milwaukee, WI 53223 USA Tel: +414.355.5000 800.558.5120 (US only) Fax: +414.355.3790 Internet: www.gemedicalsystems.com Europe / Middle East / Africa Postfach 60 02 65 D-79032 Freiburg Germany Tel: +49.761.45.43.0 Fax: +49.761.45.43.233 Asia 11th Floor, The Lee Gardens 33 Hysan Avenue Causeway Bay Hong Kong Tel: +852.2100.6300 Fax: +852.2100.6292 Revision AModel 340 Telemetry Systemi 2006920-001 Contents Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Preface Overview of Telemetry Systems . . . . . . . . . . . . . . . . . . . . ix About Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x Model 340 Original Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x Model 340 Plus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x Model 340M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x Identifying Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi Identifying Model 340 Original Release and Model 340 Plus Telemetry Systems . . xi Identifying a Model 340M Telemetry System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii 1Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 General Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Responsibility of the Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Definitions of Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Equipment Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Equipment Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 FCC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 FCC Rules Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 FCC RF Exposure Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 FCC Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 Wireless Medical Telemetry Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 iiModel 340 Telemetry SystemRevision A 2006920-001 2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Product Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 3Controls, Indicators, and Connectors . . . . . . . . . . . . . . . 3-1 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Receiver Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . …

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ST600 TRANSMITTER OPERATING INSTRUCTIONS 1892 1273 PL1 PL3 PL2 Figure 1 Physical Arrangement These operating instructions are intended to provide the user with sufficient information to install and operate the unit correctly. The Wood and Douglas ST600 UHF transmitter is intended to fulfil the numerous OEM applications by virtue of its highly flexible synthesized design approach, miniature size and cost-effective performance. The transmitter can accept analogue and digital data input and provides an RF output power of 125mW (adjustable down to 1mW, refer to Sales Office for details). INSTALLATION NOTES:Pin spacing on all connectors is 2.54mm (0.1") All dimensions in millimetres For 7 pin connector version position is shown dotted. TXE CONNECTION Connection to the ST600 transmitter is via PL1, PL2 and PL3 which plug directly into the user's own equipment. The location of these connectors is shown in Figure 1 and detailed in the following tables. (The unit is fitted with a 10 pin connector when parallel frequency select facility is provided). PINNAMEFUNCTIONREMARKS 10V0 voltscommon ground 2RF O/PRF output50 ohms output 30V0 voltscommon ground Connector PL1 pin detail PINNAMEFUNCTIONREMARKS 1+VINpositive supply+6.0V to +15.0V 20V0 voltscommon ground Connector PL2 pin detail PL1 PIN NAMEFUNCTIONREMARKS 10V0 voltscommon ground 2transmit enableo/c = transmitter disabled LOW <+0.5V = transmitter enabled 1k nom. internal pull-up to +Vin 3DIGITAL I/Pdata input0/+3V to 0/+12V, DC-coupled 4ANALOGUE I/Pdata input> 50 mV p-p, AC-coupled 5+5V OUT + 5 volt supply output50mA maximum current drain 6RS232 I/Pserial programming i/p RS232 level programming input Note: Inverted TTL data can also be used. If not used, leave not connected, or connect to 0/V 70V0 voltscommon ground 8RB1 parallel frequency select internal pull-up to +5V, active low 9RB2 10RB3 Connector PL3 pin detail Figure 2 Programming Adaptor FREQUENCY PROGRAMMING The ST600 has an internal memory which can store up to 128 RF channels (16 randomly programmed and 112 sequentially programmed). The frequency and set-up information is programmed into the unit by a synchronous PCM interface protocol. The software supplied with the ST600 transmitter is the STSRn00.exe program. The software can be run on a PC with the serial port connected to PL1 of the ST600 transmitter via a suitable adaptor as shown in Figure 2. If the read-back function is desired, then PL1 pin 10 of the transmitter must be connected to pin 2 of the PC serial port via a buffer circuit. A 1k pull-up resistor to +5V must also be provided as shown. RUNNING THE SOFTWARE 1.Connect ST600 to a suitable supply and to the PC using the programming adaptor. 2.Insert the STSRn00.exe disk into drive A and type: A:STSRn00 <return> 3.The user is then prompted to enter the serial port number of his PC which is used to communicate with the ST600 receiver. Enter 1 or 2. 4.Next there is a prompt to select STn00 or SRn00. Enter 1 for the ST600 5.Next is the prompt to select freq. range:1 : ST100 (125 - 180MHz) 2 : ST/SR500 (400 - 650MHz) 3 : ST/SR800 (800 - 880MHz) After the software has successfully loaded the main menu screen is displayed as shown in Figure 3. The screen shows the default settings which are entered at factory set-up. These default settings will be displayed whenever the STSRn00 software is run. Please note that mouse operation is not supported with this program. FREQUENCY STORAGE The internal PIC processor allows for both random allocated frequencies and sequential channels. The program displays the 16 (as channel 0/ to 15) random channels on the main screen. If a sequential table is used then these are stored in channels 16 to 127. These cannot be displayed or printed out. To simplify the situation, the first 16 channels of the sequential table can be copied to the random channel by pressing the F2 button. The first 8 channels (0 to 7) can be selected using the serial interface or the parallel interface, as described later. STSRn00 Programmer v.1.0.02 Chan 0 458.5MHz <<Comparison freq. 12.5 KHz Chan 1 458.5125MHz Ref. (TCXO) freq. 12. 8 MHz Chan 2 458.525MHz Parallel channel select Chan 3 458.5375MHz Chan 4 458.55 MHz Chan 5 458.5625MHz Chan 6 458.575MHz COMMANDS: Chan 7 458.5875MHz Chan 8 458.6MHz F2:copy Ch 16-31 to Ch 0-15 Chan 9 458.6125MHz F3:change comparison frequency Chan 10 458.625MHz F4:set parallel ch. mode Chan 11 458.6375MHz F5:read from unit Chan 12 458.65MHZF6:program unit Chan 13 458.6625MHz F7:program serial channel Chan 14 458.675MHz F12:QUIT Chan 15 458.6875MHz Start table 458.7 MHz Max. Freq. 458.95MHz Sequential frequencies, Chan. 16 to 127 Table step 1 x 12.5 kHz Figure 3 NOTES: 1.The reference (TXCO) frequency is not programmable. 2.The readback function (F5) reads the current settings from the unit into the PC. 3.Function F6 (program the unit) is only enabled after the read-back, (refer to Figure 2). This function re-programs the unit connected. 4.A value for each parameters has to be entered. 5.Only channel 0 to 15 frequencies can be displayed by this software explicitly. 6.Sequential channel table is displayed as start, step and stop frequencies. Serial channel selection The unit defaults to serial channel selection whenever the software is run. Selecting the F7 function key prompts the user to enter the new serial channel number which is then displayed in ‘Serial channel selected’. Parallel channel selection To enable parallel channel selection mode press the F4 (Parallel channel mode) function key, The screen then displays ‘parallel channel selected’. Three inputs RB1, RB3 and RB3 applied via PL3 to pin 8, pin 9 and pin 10 respectively, select the operating channel as shown in the following table. CHANNEL SELECTION PIN 10PIN 9 PIN 8CHANNEL LOWLOWLOW7 LOWLOWHIGH6 LOWHIGHLOW5 LOWHIGHHIGH4 HIGHLOWLOW3 HIGHLOWHIGH2 HIGHHIGHLOW1 HIGHHIGHHIGH0 The logic levels are : LOW < 0.8V HIGH > 2V or floating Programming random channels Random channels between 0 and 15…

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SR600 RECEIVER OPERATING INSTRUCTIONS These operating instructions are intended to provide the user with sufficient information to install and operate the unit correctly. The Wood and Douglas SR600 UHF synthesized receiver is intended to fulfil the numerous OEM applications by virtue of its highly flexible synthesized design approach, miniature size and cost-effective performance. INSTALLATION NOTES:Pin spacing on all connectors is 2.54mm (0.1") All dimensions in millimetres CONNECTION Connection to the SR600 receiver is via PL1, PL2 and PL3 which plug directly into the user's own equipment. The location of these connectors is shown in Figure 1 and detailed in the following tables. PINNAMEFUNCTIONREMARKS 10V0 voltscommon ground 2RF I/PRF input50 ohms input 30V0 voltscommon ground Connector PL1 pin detail PINNAMEFUNCTIONREMARKS 1+VINpositive supply+6.0V to +15.0V 20V0 voltscommon ground Connector PL2 pin detail PINNAMEFUNCTIONREMARKS 1RSSIS meter output0.5 - 2V signal strength indicator, 60dB range 2SQFSquelch flagopen collector output, ON (low) = no signal 3AUDIOAF output 250mV p-p ±20% into 10kS Note: The output audio is inverted with respect to the ST600 (or similar Wood & Douglas product) audio input. 4DATAData outputopen collector, no pull-up Note: The data output is inverted with respect to the ST600 (or similar Wood & Douglas product) data input. 5+5V+5 volt supply output50mA maximum current drain 60V0 voltscommon ground 7 RS232 I/P serial programming input RS232 programming input Note: inverted TTL level data can also be used. If not used, leave not connected, or connect to 0/V 8RB1 parallel frequency select internal pull-up to +5V, active low 9RB2 10RB3 Connector PL3 pin detail Figure 2 Programming adaptor FREQUENCY PROGRAMMING The SR600 has an internal memory which can store up to 128 RF channels (16 randomly programmed and 112 sequentially programmed). The frequency and set-up information is programmed into the unit by a synchronous PCM interface protocol. The software supplied with the SR600 receiver is the STSRn00.exe program. The software can be run on a PC with the serial port connected to PL3 of the SR600 receiver via a suitable adaptor as shown in Figure 2. For the read-back function PL3 pin 10 of the receiver must be connected to pin 2 of the PC serial port via a buffer circuit. A 1k pull-up resistor to +5V must also be provided as shown. RUNNING THE SOFTWARE 1. Connect SR600 to a suitable supply and to the PC using the programming adaptor. 2. Insert the STSRn00PRG disk into drive A and type: A:STSRn00 <return> 3.The user is then prompted to enter the serial port number of his PC which is used to communicate with the SR600 receiver. Enter 1 or 2. 4. Next there is a prompt to select STn00 or SRn00. Enter 2 for the SR600 5. Next is the prompt to select freq. range:1 : ST100 (125 - 180MHz) 2 : ST/SR500 (400 - 650MHz) 3 : ST/SR800 (800 - 880MHz) After the software has successfully loaded the main menu screen is displayed as shown in Figure 3. The screen shows the default settings which are entered at factory set-up. These default settings will be displayed whenever the STSRn00 software is run. Please note that mouse operation is not supported with this program. FREQUENCY STORAGE The internal PIC processor allows for both random allocated frequencies and sequential channels. The program displays the 16 (as channel 0/ to 15) random channels on the main screen. If a sequential table is used then these are stored in channels 16 to 127. These cannot be displayed or printed out. To simplify the situation, the first 16 channels of the sequential table can be copied to the random channel by pressing the F2 button. The first 8 channels (0 to 7) can be selected using the serial interface or the parallel interface, as described later. STSRn00 Programmer v.1.0.02 Chan 0 458.5 MHz <<Comparison freq. 12.5 KHz Chan 1 458.5125 MHz Ref. (TCXO) freq. 12. 8 MHz Chan 2 458.525 MHz Parallel channel select Chan 3 458.5375 MHz Chan 4 458.55 MHz Chan 5 458.5625 MHz Chan 6 458.575 MHz COMMANDS: Chan 7 458.5875 MHz Chan 8 458.6 MHz F2:copy Ch 16-31 to Ch 0-15 Chan 9 458.6125 MHz F3:change comparison frequency Chan 10 458.625 MHz F4:set parallel ch. mode Chan 11 458.6375MHz F5:read from unit Chan 12 458.65MHZF6:program unit Chan 13 458.6625MHz F7:program serial channel Chan 14 458.675MHz F12:QUIT Chan 15 458.6875MHz Start table 458.7 MHz Max. Freq. 458.95MHz Sequential frequencies, Chan. 16 to 127 Table step 1 x 12.5 kHz Figure 3 NOTES: 1.The reference (TXCO) frequency is not programmable. 2. The readback function (F5) reads the current settings from the unit into the PC. 3. Function F6 (program the unit) is only enabled after the read-back, (refer to Figure 2). This function re-programs the unit connected. 4.A value for each parameters has to be entered. 5.Only channel 0 to 15 frequencies can be displayed by this software explicitly. 6.Sequential channel table is displayed as start, step and stop frequencies. Serial channel selection The unit defaults to serial channel selection whenever the software is run. Selecting the F7 function key prompts the user to enter the new serial channel number which is then displayed in ‘Serial channel selected’. Parallel channel selection To enable parallel channel selection mode press the F4 (Parallel channel mode) function key, The screen then displays ‘parallel channel selected’. Three inputs RB1, RB3 and RB3 applied via PL3 to pin 8, pin 9 and pin 10 respectively, select the operating channel as shown in the following table. CHANNEL SELECTION PIN 10PIN 9 PIN 8CHANNEL LOWLOWLOW7 LOWLOWHIGH6 LOWHIGHLOW5 LOWHIGHHIGH4 HIGHLOWLOW3 HIGHLOWHIGH2 HIGHHIGHLOW1 HIGHHIGHHIGH0 The logic levels are : LOW < 0.8V HIGH > 2V or floating Programming random channels Random channels between 0 and 15 can be entered using the Up 8 and Down 9 arrow keys and then entering the required operating frequency. The entered value must be an integer multiple of comparison frequency otherwise an…

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1 Serial Protocol for the STn00 and SRn00 devices Issue 2 Date5/6/00 1Introduction This document describes the serial protocol for re-programming the STn00 and SRn00 range of transmitter and receiver modules. There is an important difference between the VHF and the UHF products which concerns the Intermediate Frequency (IF) used. To differentiate between the ST and SR each has a unique product code. For the SRn00 this is 0F6 hex and for STn00 it is 0F5 hex. 2Data Format Two baud rates are used for differing functions. Throughout this document, which one is being used is given. The two baud rates are: Baud rate 19,200, 8 data bits, 1 start bit, 1 stop bit, no parity Baud rate 1,200, 8 data bits, 1 start bit, 1 stop bit, no parity The internal PIC is running an RC clock which can vary considerable with component tolerance and temperature. To overcome this, a serial protocol is used which looks a the input waveform from the PC as a pulse, the duration of which determines whether the input data is a binary 1 or 0. If the baud rate is 19,200, the data byte to be transmitted to the radio is as follows: 0 (decimal) =binary 0 255 (decimal)=binary 1 During readback the data can vary and so must be interpreted as follows: Value < 241 (dec) = binary 0 Value $ 241 (dec) = binary 1 For the one data byte, 8 bytes must be sent representing each bit. If the baud rate is 1,200, then the data sent is a normal 8 bit byte. Note:throughout the document the value of the data is given assuming an RS232 interface. If TTL or similar logic levels are used then the data must be inverted. 2 3Definitions The following give details of the terms used thoughout this document. 3.1Fosc This is the value of the Reference Oscillator in the radio. This is NOT programmable and the value is not stored in EEPROM. Currently there are two types used by the ST/SRn00 units: 12.8 and 14.85 MHz. 3.2Fc Fc is the Comparison Frequency used by the synthesizer in the radio. This is a programmable parameter, but care should be taken if it is changed, because the synthesiser hardware is optimized for certain values of Fc. The Fc in use with the ST/SRn00 family vary for the different applications, but is one of these discrete values: 5, 6.25, 10, 12.5 ,20 or 25 KHz (refer to Wood & Douglas for the actual values allowed). Fc is not directly stored as a number in the radio’s EEPROM. It is rather indirectly stored as the “Rvalue” (see below). 3.3Rvalue This number is the result of the division: Rvalue = Fosc / Fc Since the ST/SRn00 family can have one of two Fosc: 12.8 or 14.85 MHz, the possible Rvalues for the radio are: If Fosc= 12.8MHz: RR1(5)=2560 (dec), A00 (hex) RR1(6.25) =2048 (dec), 800 (hex) RR1(10)=1280 (dec), 500 (hex) RR1(12.5)=1024 (dec), 400 (hex) RR1(20) =640 (dec), 280 (hex) RR1(25)=512 (dec), 200 (hex) 3 If Fosc= 14.85MHz: RR2(5) =2970 (dec), B9A (hex) RR2(6.25) =2376 (dec), 948 (hex) RR2(10)=1485 (dec), 5CD (hex) RR2(12.5)=1188 (dec), 4A4 (hex) RR2(20) =NOT possible (result is not integer no.) RR2(25)=594 (dec), 252 (hex) From above it is clear that we have 11 possible values for the combination of 2 Fosc and 6 Fc’s. When the Rvalue is read from the unit the current Fc and Fosc. can be determined from these values. Note:Rvalue is stored as 2 bytes in EEPROM locations 61, 62 3.4IF IF is the Intermediate Frequency of the receiver. Its value for the STn00 family is always zero, but for the SRn00 family is as follows: SRn00 with frequency range < 200 MHz:, “High Side” (+45 MHz) SRn00 with frequency range > 200 MHz, “Low Side” (- 45 MHz). STn00, any frequency IF = 0 Note: The IF value is not stored in the unit’s EEPROM. The type of ST or SRn00 must be known before programming can be carried out. 4Channel Information and Storage For both the ST and SRn00 family, 16 random and 112 sequential channels can be stored in the non-volatile EEPROM memory area of the internal PIC processor. Channels 0 - 15 are stored individually in the EEPROM and channels 16 - 127 are calculated from the start frequency and the table step increment. In principle frequency is stored in a two byte format plus the high byte offset. The data stored is not the frequency itself, but the frequency divided by the Fc. In other words if the desired frequency for the random channel N is Freq(N), then the value stored is F(N) where F(N) is calculated as: F(N) = [Freq(N) + IF] / Fc The result is stored as: EEPROM(60)= int [F(N)/65536] *256high byte offset EEPROM(N)= int [F(N)/256] - EEPROM(60)msb EEPROM(N + 16)= F(N)- [EEPROM(60) + EEPROM(N)] *256lsb 4 5 Or if a read-back is performed, the frequency on channel N is calculated as: Freq(N) = {{{[ EEPROM(60)+ EEPROM(N)]*256 }+ EEPROM(N+16)} - IDF }*Fc Hz where IDF = IF/Fc Similarly, for the Sequential table start, if desired frequency is FreqS, then: FS = [FreqS + IF] / Fc and the result is stored as: EEPROM(56)= int[FS/65536] *256high byte offset EEPROM(57)= int[FS/256] - Eeprom(56)msb EEPROM(58)= FS- [EEPROM(56) + Eeprom(57)] *256lsb The sequential table step is stored in location 57 as a multiple of Fc The sequential table is limited by the value stored in location 51 (0-111), but it can not exceed 111. If the value is > 111 then limit should be imposed as follows: MaxCh = EEPROM(51)Sequential ch. Limit If MaxCh > 111 then MaxCh = 111Limit MaxCh Number to 111 ! endif If read-back is performed, the Start of the Sequential table is calculated as: SeqFreqStart = {{{[ EEPROM(56)+ EEPROM(57)]*256 }+ EEPROM(58)}- IDF }*Fc where IDF = IF/Fcthis is Intermediate Frequency as a multiple of Fc And a sequential table step is: SeqFreqStep = EEPROM(59)*Fc [Hz] 6 5EEPROM locations The PIC processor used in the STn00 and SRn00 units has an area of non- volatile memory EEPROM area. The contents of this data is given in the following table: LocationDescription 0 - 15RX/TX div msbs 16 - 31RX/TX div lsbs 32 - 47not used 48 - 49reserved 50not used 51is sequential table limit channel (0-111) 52 - 53reserved 54SETUP flags byte (default is FF…

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Simplified Operating Instruction, 340M OB Telemetry, 608-614MHz GE Medical Systems Information Technologies4/9/01 Page 1 of 8 340M OB Telemetry Simplified Operating Instructions Overview: The 340M OB Telemetry system is comprised of a transmitter and receiver to provide an RF link between patient wor n tra nsducers and fe tal mo nitor, allowing pa tient to freely move abo ut while staff mo nitor fetal heart rate and uterine contractions remotely. The 341 Receiver is line powered from 120 VAC, and the 342 Transmitter is powered from (4) AA size primary Alkaline cells. Expected life of the Alkaline cells in continuous use is roughly 16 Hrs. There are two simulators used for exercising the transmitter. One is a production simulator (Model 325) and the other is a radiation hardened simulator (built into a metal box). The 325 simulator will be used for SAR testing and the radiation hardened will be used for other testing. Other accessories are provided for their use in testing, if necessary. Descriptions: (refer also to 340 Service manual, pages 3-2,3,4) 341 Receiver: Front Panel: AC power switchfar right Toco/Iup mode change switchleft Indicator lampscenter right Signal strength indicator, greentop Batter y sta tus, redcenter AC mains, greenbottom Rear Panel: Power Entry Modulefar left top Mark interconnect cable Jackfar left bottom System Interconnect cable jackleft bottom Ultrasound interconnect cable jackbottom center ECG interconnect cable jackbottom right UA interconnec t cable jackbotto m far right Equipotential ground jacktop center Simplified Operating Instruction, 340M OB Telemetry, 608-614MHz GE Medical Systems Information Technologies4/9/01 Page 2 of 8 Antenna jack (RA female BNC)top center Connect to ¼ wave stainless whip 342 Transmitter: Front Panel: Ultrasound Transducer jackleft ECG Transducer jackcenter UA transducer jackright Rear Panel: Headphone jackfar left Remote mark transducer jackleft Power switchright Antenna jack (BNC)far right Connect to ¼ wave helical wound ant. Botto m Pa nel: Battery access door Radiation Hardened Simulator (for use at ITS, Boxborough): This is an aluminum die-cast box containing (2) Alkaline ‘D’ cells providing power, and active circuitry providing signal to the 5700 Ultrasound Transducers and UA Transducer plug. Top: Power switch: Must be in the ‘ON’ position to obtain simulated transducer signal. Turn ‘OFF’ when not needed to conserve battery. UA Ref pushbutton: Forces UA simulated signal to a baseline level for physiologic signal drift testing. Not used for RF testi ng. Adjustme nt Po te ntio me ter: Allows UA simulated signal to be offset from baseline level by adjustable amount. Not used for RF testi ng. Simplified Operating Instruction, 340M OB Telemetry, 608-614MHz GE Medical Systems Information Technologies4/9/01 Page 3 of 8 Side: (4) Gray Cables total - Gray cable, no plug: Not used -Gray cable, 5700 Transducer at end, nothing beyond Not used -Gray cable, 5700 Transducer at end, mechanically face connected to slave 5700 transducer This slave 5700 plug connects to Ultrasound input jack of the 342 transmitter. -Gray cable, round 12 pin white connector at end This plugs into the UA connector jack of the 342 Transmitter. 325 Maternal/Fetal Simulator (for use at ITS, Menlo Park, SAR): Front Panel: FECG/MECG section: RATE bpm: Set to 120 QRS AMPLITUDE: Set to 2000 CMR: Set to BAL MODE: Set to FECG QRS POLARITY: Set to (+) ULTRASOUND/FMD section: RATE bpm: Set to 120 SIGNAL LEVEL: Set to HIGH MODE: Set to US/FMD UA Section Black Slide Switch: Simplified Operating Instruction, 340M OB Telemetry, 608-614MHz GE Medical Systems Information Technologies4/9/01 Page 4 of 8 Left position LE VE L mmH g: Set to 100 MODE: Set to TOCO Botto m Ce nter section MANUAL ADJUSTMENT: Full clockwise PATTE RN ME MORY: ON Botto m Ri ght POWER indicator: Glows green when AC power connected and rear panel switch depressed Rear Panel: Power inlet: Connect IEC style power cord to 120 VAC Power butto n: Push on/ Push off style button. 325 must be powered on for testing. Cable Harness, Front Panel: From Top Center (3) gray cables are connected from ‘CONNECT TO FETAL MONITOR’ connector. -Round white to UA input jack of 341 Transmitter -Round Gra y/Blue to ULTRASOUND i nput jack of 341 Transmitter -Round dark gray to ECG input jack of 341 Transmitter Procedure: 1)Identify packed items. - 341M Telemetry Receiver - Line cord - System Interconnect cable #1563AAO - Mark interconnect cable #1397AAO - US interconnect cable #1399BAO - ECG interconnect cable #1375AAO - UA interconnect cable #1400AAO - Quarter wave stainless whip antenna (receiver) Simplified Operating Instruction, 340M OB Telemetry, 608-614MHz GE Medical Systems Information Technologies4/9/01 Page 5 of 8 - 342M Telemetry Transmitter - Black Helical antenna (transmitter) - 3 sets of AA batteries - Remote Mark transducer #3919BAO - Softrans Cable #1336AAO - Softrans Intrauterine Pressure Catheter #2076AAO - Ultrasound Transducer #5700AAX - Toco transducer, #2264LAX - Headset #3316AAO - Qwik Connect Plus Legplate interface cable, #1590AAO - Radiation Hardened Simulator, (no marking) Boxborough site - Model 325 Simulator, Menlo Park site 2)For tests involving fully modulated transmitter signals, interconnect system as show n: Boxborough, MA: Helical Ant. (2) 5700 transducers face to face stainless whip ant. System Interconnect cable #1563AAO Mark interconnect cable #1397AAO US interconnect cable #1399BAO ECG interconnect cable #1375AAO UA interconnect cable #1400AAO 342M Transmitter (power switch on) Boxborough: RF Hardened Simulator (Power switch on) Ultrasound Uterine Activity 1590AAO Le gplate 341M Receiver (power switch on) (green signal strength LED indicates transmitter active) AC Power Remote Mar k pushbutton (3919BAO) Headset (3316AAO) ECG Simplified Operating Instruction, 340M OB Telemetry, 608-614MHz GE Medical Systems Information Technologies4/9/01 Page 6 of 8 3) Description of System as connected above. I…

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