Fluke199XRAY
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1. 30 kVp and repeat step 4 The k edge kVp is used to determine linear filter pack correction Once an accurate determination of kVp has been made do not disturb the x ray generator settings Proceed to linear mammo filter pack use Linear Measurement Setup Remove the k edge filter pack and replace it with the linear mammo filter pack Increase the target to filter pack distance to about 15 inches 38cm If the Model 35080 A B M kVp Divider changes position in the x or y axis with respect to the x ray generator during the linear kVp measurements you must repeat the determination of the k edge kVp and the correction value since this measurement is position sensitive 2 4 Linear Correction Exposure Make an exposure using the same generator settings as those used to make the last k edge exposure After this measurement is complete the kV correction for the linear filter pack will be displayed If you do not want your linear kVp measurements automatically corrected press F1 LINEAR CHANGE and select No Correction To recalibrate the k edge correction select Recalibrate k Edge Mammo Filter Pack The k Edge Mammo filter pack is used to determine the correction factor recalibrate for the Linear Mammo filter pack Filter Pack Selection k Edge Mammo Proceed as follows to do the recalibration Select m k Edge Mammo with the arrow keys then accept The screen will show the present k Edge calibration v2. Mode Screen Readings EiFAkeve 2 10 WD ee E AGING EE 2 10 a WE Sotkey FUNCIONS EE 2 11 kVp Scope Mode PreSGlS eet gereest ee 2 12 Seele In E 2 16 Chapter 1 General About this Manual Limited Warranty Limitation of Liability This manual provides information on the X RAY kVp measurement function of the Fluke 199XRAY Medical ScopeMeter It also describes user interface differences Read the Warranty and Limitation of Liability statements that you find in the ScopeMeter 190B C Users Manual that is included in the test tool kit shipment on CD ROM between the Fluke 190B C and the Fluke 199XRAY Shipment Contents For other information on the Fluke 199XRAY please consult the Fluke 190B C Series Getting Started manual the Fluke 190B C Series Users Manual on CD ROM l and the Fluke 190B C Medical Functions Users Manual shipment includes the following parts Kees on CD ROM that are included in the oa Gennes Safety Information In addition to the shipment contents shown in the Fluke 192B 196B C 199B C Users Manual the 199XRAY Read and comply with the safety instructions that you find in the ScopeMeter 190B C Series Getting Started manual and in the Fluke 190B C Users Manual MA190 Accessory Set See 190B C Medical Manual Supplement 1 1 Fluke 199XRAY Users Manual About the X RAY kVp Function The 199XRAY Medical Scopemeter when used with Fluke Biomedical kVp Divider automatically measure kVp average
3. and kV peak In the radiographic measurement mode exposure time is also measured in milliseconds or pulses The Fluke Biomedical Non Invasive kVp Divider Model 35080 A B M is an alternative to high voltage divider tanks It provides safe non invasive fast measurement of kVp without endangering personnel and or equipment Its use is primarily intended for X ray machine service and calibration The kVp Divider provides an analog output voltage proportional to the instantaneous voltage applied to the X ray tube 1 2 The X RAY kVp function provides oscilloscope setups for measurements using the kVp Divider and the following filter packs on Input A e Wide Range Filter Pack K edge Mammo Filter Pack Linear Mammo Filter Pack CT Filter Pack Mobile Pack Plus Filter Pack Low Range Filter Pack For details on the kVp Divider refer to the 35080 A B M Operators Manual 190B C vs 199XRAY User Interface The 190B C and the 199XRAY operating instructions are equal except for the following e The 199XRAY user interface text is available in English only language selection is not possible See USER Button Bar below e The 190B C RECORDER functions can be selected by pressing the RECORDER key The 199XRAY RECORDER functions can be selected by pressing the MEDICAL key See 190B C RECORDER Key and 199XRAY MEDICAL Key below General d 190B C vs 199XRAY User Interface USER Button Bar Pressing the 190B C USER k
4. between the cursors EJ MANUAL mode two horizontal cursors Use D to move the cursors Use F2 to select cursor to be moved Readings are voltage difference between cursors A voltage at the upper HIGH and lower LOW cursor position BR MANUAL MODE One vertical cursor Use 6 to move the cursor Readings are the average minimum and maximum voltage at the cursor position Select the cursor to be moved Select between TIME or PULSE reading Exit the MANUAL mode and return to the AUTO kVp mode 2 11 AO AUTO kVp mode Fluke 199XRAY Users Manual kVp Scope Mode Presets Sensitivity Probe Factor and Bandwidth filter are fixed When entering the kVp mode some Scope functions are preset Some of these function setting are fixed some can Note be changed See Table 2 1 and Table 2 2 for details l In kVp mode Input B can be used but will show Trigger settings can not be changed no readings A trace will only be shown if triggering via Inout A occurs Vertical defection can be changed using the RANGE key Time base can be changed using the TIME key The highest time base speed is 500 us div Table 2 1 Default Filter Pack Settings Filter Pack Vertical Sensitivity Horizontal Deflection Trigger Level Wide Range 20 kV div 40 kV 10 ms div 80 kV K Edge Mammo 500 mV div 10 ms div EI oov 1 20 10 msidiv 1000 O 2 12 Using the X RAY kVp Function 2 kVp Scope Mode Tabl
5. can select Time or Pulse readings if applicable using the F3 key TL XX XX ms time of pulse AUTO FIL XX XX ms time of multiple pulses AUTO FIL ia XXX pls number of pulses AUTO HH XX XX ms time between cursors MANUAL bi XXX pls number of pulses between cursors MANUAL Note If the kV or exposure time values cannot be calculated because of the signal shape or because the kV is not within the range of the chosen filter pack dashes will be displayed Use the Manual mode to read the voltage at each cursor position or adjust the vertical and or horizontal sensitivity to obtain a signal that meets the Auto kVp Mode Waveform Requirements F1 F4 Softkey Functions F1 F4 softkey functions for cursor menu OFF The key label shows the current filter pack name Press to return to the Filter pack selection screen if you want to select another filter pack Select optimal scope settings for RADIO or FLUORO mode measurements if applicable Select between TIME in ms or PULSE reading in the RADIO mode PULSE is not available when HF Three Phase signal shape is selected Exit the kVp mode and return to the MEDICAL RECORDER screen F1 F4 softkey functions for cursor menu ON FA Select the cursor mode Using the X RAY kVp Function 2 kVp Scope Mode Hi MANUAL mode Two vertical cursors Use to move the cursors Use F2 to select cursor to be moved kVp measurements apply to the area
6. manually adjusted See kVp Scope Mode Presets on page 2 12 There are two different measurement modes in the kVp Scope Mode the RADIO mode for measuring single radiographic exposures and the FLUORO mode for measuring continuous or pulsed fluoroscopic exposures Radiographic Mode RADIO When used in the Radiographic mode the 199XRAY waits for a trigger then stores the entire kV waveform When the radiographic exposure is complete kVp avg kV peak and exposure time in ms or pulses displayed the kV waveform must also meet the Automatic kVp Mode requirements The instrument is then ready for another exposure Note The most recent 100 screens are always stored in the replay buffer To view stored screens press the REPLAY button and use the F1 F2 and F3 keys To start anew measurement press F4 EXIT REPLAY For more information please see the 190B C Users Manual Using the X RAY kVp Function 2 kVp Scope Mode Fluoro Mode FLUORO When used in the Fluoro mode the 199XRAY waits for a trigger then samples the kV waveform at one sample per second For each sample kVp avg and kV peak are measured each sample must also meet the Automatic kVp Mode requirements Each sample is stored in the instrument s replay buffer and up to 100 samples can be stored When the fluoro exposure stops or if the replay buffer fills the Replay Menu is displayed and each sample may be displayed using the F1 F2 and F3 keys To start a new mea
7. FLUKE Fluke199XRAY Medical ScopeMeter Users Manual 4822 872 30791 August 2006 2006 Fluke Corporation All rights reserved All product names are trademarks of their respective companies Table of Contents Title Page ABOU E EE 1 1 Salet let teilen le BEE 1 1 Limited Warranty Limitation of Liability ccccccesccccesseeeeeeeeeeeeeeeesseeeeeeesseeseeeesaaeeeess 1 1 Sne elei 1 1 About le X RAY KV p FUNCION sirsiran ence rele aa aeh ncaa c cecal a ete 1 2 190B C vs 199XRAY User IMEI eege 1 3 USER BUOM Ba sc sea cesses A E eiaiaccee as eeenadeetaseeesaco 1 3 TOO B CAREC ORDER Eesbech geb AER 1 4 TOOXRAY MEDICAL EE 1 4 kVp Measurement Procedure 2 1 Selecing a Filler PACK skeet E Coed Alanansecistaataanan nate eenancs 2 1 Wide Range Low Range Filter Pack 2 2 Gr amp Moble Pack Plus ge 2 2 Cadmium K edge Mammo Filter Pack Calibration OvervieW ssoennnnnsnnnnensnnnnenn 2 3 KeECGe Mammo Filter PACK EE 2 5 Linear Mammo Fiter Ge EE 2 6 KYD SCODE INO Saas ic i kc leede kreesen 2 7 Radiographic Mode RADIO ner cele el oe eee iesaiels 2 7 Fluke199XRAY Users Manual Fluoro Mode FLWOR EE 2 7 KV WIEASUIFEIN GNIS sercis A 2 7 Exposure Time Measurements RADIO on 2 8 AUTO kVp Mode MANUAL MOG raics cesses si oie heeded laa hte ba len eat 2 9 Selecting AUTO kVp mode Manual Mode 2 9 Auto kVp Mode Waveform Requirements nosnnnsnsennsensnnnsnernrrrnernrrrnnrrrnrenrnnnee 2 9 kVp Scope
8. alues Using the X RAY kVp Function Selecting a Filter Pack Accept Recalibrate to start the calibration You will see the calibration startup screen as shown below A Up avg JL U peak T A Follow the screen instructions 4 Close the instruction banner and start the calibration You will be guided through the calibration procedure by screen messages See also Cadmium K edge Mammo Filter Pack Calibration Overview on page 2 3 2 5 Fluke 199XRAY Users Manual Linear Mammo Filter Pack Filter Pack Selection Use cal values a Proceed as follows to select the filter pack 1 Select m Linear Mammo with GES the arrow keys then accept 2 6 Select and accept m Recalibrate to determine the correction factor for the linear Mammo filter pack Continue as for the k Edge Mammo filter pack step 3 m Use cal values to use the present calibration values The test tool will enter the kVp Scope Mode see page 2 7 This choice is disabled if the calibration values are invalid Select m Recalibrate to get valid calibration values again m No correction to perform kVp measurements without applying the correction factors for the filter pack The test tool will enter the kVp Scope Mode see page 2 7 kVp Scope Mode When entering the kVp Scope mode predefined scope settings for the selected filter pack are provided Some of these settings are fixed some can be
9. ay tube Raise the kVp divider as close as possible to the x ray tube The x ray beam should cover the entire filter pack Select the k Edge Mammo filter pack from the filter pack menu Using the X RAY kVp Function Selecting a Filter Pack 25 kVp Measurement Procedure Set the x ray generator for 25 kVp 100 mA 80 ms If not available use a mAs setting that provides an exposure of 80 ms 10 ms Select the molybdenum Mo filter on the generator Make the first baseline measurement 26 kVp Measurement Procedure Repeat the baseline measurement at a slightly higher kV setting that should still be below the k edge 26 7 kV Set the generator for 26 kVp 100 mA 80 ms If not available use a mAs setting that provides an exposure of 80 ms 10 ms If the voltage difference between the first and second baseline measurements is within the limits 20mV this is the baseline voltage If the voltage difference is outside the limits repeat the above measurements at 24 kVp and 25 kVp respectively 29kVp Measurement Procedure Set the generator for 29 kVp 100 mA 80 ms If not available use a mAs setting that provides an exposure of 80 ms 10 ms Make the k edge kV reference measurement 2 3 Fluke 199XRAY Users Manual If the exposure is within the range 27 5 to 29 5 kVp the reading is accurate If kVp is displayed set the generator for 28 kVp and repeat step 4 If 0 0 kVp is displayed set the generator to
10. e 2 2 kV Range and Trigger Level vs Filter Pack and Vertical Sensitivity Filter Pack Vertical Sensitivity kV Range Trigger Level oo o y y oOo S oowoo RETTEN REN 220 ZEN el OWN goaza KV Kv O 90KV KV pot div 100KV KV Kv 5 7OKV KV po Kid COKVE KV Kv S aoo KV Default settings 2 13 Fluke 199XRAY Users Manual Specifications The 199XRAY kVp Measurement Accuracy Specifications are shown in table 2 3 Table 2 3 199XRAY kVp Measurement Accurcy Specifications kV Peak Accuracy Exposure Time Accuracy Lungen Sman Signet The kV peak measurement accuracy may be affected by measurement system noise and waveform artifacts Maximum error with 100 ripple 2 14
11. ey will open the button bar CONTRAST LIGHT 4 Pressing the 199XRAY USER key will open the button bar without the LANGUAGE selection COHTRAST LIGHT 4 Fluke 199XRAY Users Manual 190B C RECORDER Key Pressing the RECORDER key will open the screen shown below Trend Plot 1 4 199XRAY MEDICAL Key Pressing the MEDICAL key will open the screen below l FA Press again or press Gaia to exit The Medical measurements kVp function is described in Chapter 2 of this manual Operating instructions for the Scope Trend Plot the Scope Scope Record and for the Meter Trend Plot mode are described in the Fluke190B C User Manual Chapter 3 Using the Recorder Functions kVp Measurement Procedure To perform kVp measurements do the following 1 Follow the operating instructions for the filter pack as described in the filter pack Operators Manual Connect the kVp divider to Input A of the 199XRAY using a shielded 1 1 cable for example the cable of the MA190 Accessory set Select the required filter pack see Selecting a Filter Pack Start the measurement See kVp Scope Mode on page 2 7 for further instructions Chapter 2 Using the X RAY kVp Function Selecting a Filter Pack To select a filter pack do the following 1 WeDIcAL Display the ees MEDICAL RECORDER screen 2 E Select m kVp with the arrow keys GE then accept with the F4 ENTER key One of the Filter Pack Selecti
12. graphic measurement mode the entire waveform must be onscreen and must meet the following criteria The kV being measured must be within the range of the chosen filter pack and must be above the trigger level for the filter pack and sensitivity setting See Tables 2 1 and 2 2 The vertical height of the entire waveform must be greater than 2 5 divisions above the zero level No portions of the waveform may be offscreen The last falling edge of the waveform must be greater than 3 5 divisions horizontally from the rising edge trigger position The last falling edge of the waveform must be less than 9 divisions from the rising edge trigger position This leaves the last horizontal division with a signal at zero level which verifies that the current acquisition contains the complete signal 2 9 Fluke 199XRAY Users Manual kVp Scope Mode Screen Readings F1 F4 Keys An example of the kVp scope mode screen is shown in the figure below Numerical readings and the softkey button bar differ from the normal Scope mode A 1012 Se TIME E kVp Mode Readings Voltage readings xxx X kVp avg average kVp value between cursors indicated by the tick marks on the vertical cursors xxx xX kV peak kV peak value between cursors 2 10 In the MANUAL mode other readings may be shown depending on the selected cursors See F1 F4 softkey functions for cursor menu ON on the next page TIME PULSE Readings You
13. on Screens will be shown 2 1 Fluke 199XRAY Users Manual Wide Range Low Range Filter Pack Similar screens are shown for Wide Range and Low Range Filter Pack Selection Wide Range Proceed as follows to select the filter pack 1 Gef Select m Wide Range or m Low CG F4 Range with the arrow keys then accept Select the wanted signal shape Cl F4 then accept The test tool will enter the kVp Scope Mode see page 2 7 2 2 CT amp Mobile Pack Plus Filter Pack Similar screens are shown for Wide Range and Low Range c Proceed as follows to select the filter pack Select m CT or m Mobile Pack Plus with the arrow keys then accept The test tool will enter the kVp Scope Mode see page 2 7 Cadmium K edge Mammo Filter Pack Calibration Overview During Cadmium K edge Mammo Filter Pack calibration screen instructions will guide you through the calibration steps This section provides an explanation of the calibration steps Read the mammographic filter pack sections of the Model 35080 A B M kVp Divider Instruction Manual to become familiar with the specifications theory of operation and application of corrections for these filter packs K edge Measurement Setup Install the Cadmium K edge Filter Pack in the kVp Divider Place the kVp divider in the x ray beam on the compression paddle or other suitable support with the long axis of the kVp divider perpendicular to the axis of the x r
14. ses that exceed 75 of kVp avg during the exposure 2 8 AUTO kVp Mode MANUAL Mode In the AUTO kVp mode vertical cursor lines are automatically positioned to indicate the area used for the kVp measurement 10 90 area In the MANUAL mode you can select between horizontal and vertical cursors and you can manually move the cursors The cursors allow you to make precise digital measurements on the waveform manually Selecting AUTO kVp mode Manual Mode Do the following to select AUTO kVp or Manual mode Select AUTO kVp or MANUAL mode The right top corner of the screen shows AUTO kVp or MANUAL To operate the cursors you can turn the cursor menu on Turn cursor menu OFF or ON F1 F4 key labels for cursor menu OFF RADIO TIME F1 F4 key labels for cursor menu ON TIME Auto kVp Mode Waveform Requirements For automatic measurement of kV in the Fluoroscopic measurement mode the waveform must be onscreen and must meet the following criteria e The kV being measured must be within the range of the chosen filter pack and must be above the trigger level for the filter pack and sensitivity setting See Tables 2 1 and 2 2 e The vertical height of the entire waveform must be greater than 2 5 divisions above the zero level e No portion of the waveform may be off the top of the screen Using the X RAY kVp Function 2 kVp Scope Mode For automatic measurement of kV and exposure time in the radio
15. surement press F4 EXIT REPLAY kV Measurements kVp average is the average value of the kV peaks within the measurement area and is indicated by the tick marks on the vertical cursors kV Peak is the highest kV value within the measurement area In radiographic RADIO mode the kV measurement area is the central 80 of the kV waveform the first and last 10 of the waveform are excluded from these measurements In fluoroscopic FLUORO mode kV is measured over the complete waveform sample 2 Fluke 199XRAY Users Manual Note When measuring kV the bottom of the trace indicated by the A input zero icon A at the left of the screen is not zero The value at the bottom of the trace is the zero value for the selected filter pack Table 2 1 Default Filter Pack Settings lists the zero values for all filter packs For example when using the Wide Range Filter Pack the zero value is 40 kV If the kV waveform is 3 divisions above zero and the vertical sensitivity is 20 kV div 60 kV the measured kV is 100 kV 40 kV 60 kV 100 kV For more information see the 35080 A B M User Manual These adjustments are automatically performed for all kV measurements Exposure Time Measurements RADIO only Exposure time in milliseconds is measured between the points corresponding to 75 of kVp avg on the first rising edge and last falling edge of the kV waveform Exposure time in pulses is measured by counting the pul
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