REAL ECG SIMULATOR OPERATION AND USER INTERFACE

FRONT PANEL


Figure 1: Real ECG Front Panel

Figure 1 is a picture showing the front panel face of the Real ECG simulator. There are four push button momentary switches on the front panel representing <ENTER>, <ESC>, <UP>, and <DOWN>. These are shown in Figure 1 towards the bottom, just below the oval ellipse containing the Real ECG logo. Just above the oval ellipse is a four-line LCD text display for the user interface. The current menu block in the LCD display in figure 1 is the 'Main Menu', which can always be reached by pressing the <ESC> button. Above the LCD text display is a diagram showing the menu structure of the user interface.

When in a menu block, such as the 'Main Menu', the <UP> and <DOWN> push buttons can be used to go up or down respectively to enable the various menu options in a menu block. The arrow to the far left in the LCD display shows which menu item is enabled. Only one menu option can be enabled at any one time. In figure 1, the "Change Parameters" menu option of the 'Main Menu' is enabled. When located at a particular option, indicated by the arrow to the left of the option, the user can press the <ENTER> button to choose that option; this will lead either to another set of menu options, or to some particular action as described in the diagram on front panel, above the LCD text display, showing the menu structure of the user interface. In the case of Figure 1, pressing enter will lead to the 'Change Parameters' menu.

 

MAIN MENU > WAVE INFO OPTION


Figure 2: Wave Info Main Menu Option

Referring to Figure 2, selecting the "Main Wave Info" option of the 'Main menu' will show the origin information of the selected main wave on the display. Likewise, selecting the "Insert Wave Info" option of the 'Main menu' will show the origin information of the selected insert wave on the display. The type of screen that is brought up when selecting either the "Main Wave Info" or "Insert Wave Info" options of the Main Menu is shown in Figure 3.

 


Figure 3: Wave Info

Figure 3 shows the type of information that is displayed when either the "Main Wave Info" or "Insert Wave Info" options are selected. In the case shown, the Main Waveform is taken from MITDB-102. This was taken from a 68 year old Male in a V1 ECG configuration. This was a "normal" ECG pulse that occurred just before an occurrence of Atrial Fibrillation. The start of the waveform is taken from the time 472.325 seconds of the record file, to the time 473.011seconds of the record file. This portion of the ECG wave fits in 1000 or less data points, so it can be used as a periodic waveform that repeats; its rate can also be adjusted from 40 BPM to 180 BPM. This waveform would be stored in program number 1, 2, 3, or 4.

 

MAIN MENU > CHANGE PARAMETERS OPTION


Figure 4: Change Parameters Main Menu Option

Referring to Figure 4, when the user selects the "Change Parameters" option from the 'Main Menu,' the 'Change Parameters' menu will be presented on the LCD display. The 'Change Parameters' menu is shown in Figure 5.

 

CHANGE PARAMETERS MENU > SELECT MAIN WAVE OPTION


Figure 5: Select Main Wave Menu Option

The first option of the 'Change Parameters' menu brings up the "Select Main Wave" screen, as shown in Figure 6.

 


Figure 6: Select Main Wave Screen

With the "Select Main Wave" option of the Change Parameters Menu, the user can select a waveform to be used as a primary main waveform from a selection of waveforms which have been downloaded into the device via the IBM-PC software application realecg.exe. The <UP> and <DOWN> arrows may be used to increment or decrement the stored waveform number.

The user may press <ENTER> to select the waveform corresponding to the displayed stored waveform number. As with all the menus, pressing <ESC> will exit the menu with no changes made. Each waveform stored in the memory may have, stored along with its set of waveform data points, information regarding the nature and origin of the waveform, the sample rate corresponding to the set of waveform data points, the sample length corresponding to the set of waveform data points, the start time of the waveform sample in relation to its original recording, the end time of the waveform sample in relation to its original recording, and other information such as patient origin information and type of waveform (normal, atrial fib, etc.). This information is displayed when "Main Wave Info" or "Insert Wave Info" is selected from the Main Menu.

Also note that the battery voltage is show on this screen. The RealECG unit uses 10 AA size batteries for power. If the battery voltage drops below 7.6 Volts, then a "Low Battery" message will be shown when starting the waveform.

The following table shows Waveform Memory Program numbers which correspond to 4 memory banks. The table shows the program numbers allowed for the associated number of datapoints, and duration of waveforms for some selected file sample rates; the waveforms stored can be used for either the Main Wave, or the Insert Wave:

Real ECG Waveform Memory Storage

Program Numbers Possible

Data Points

Duration in Seconds for a 250 Samples/Sec File

Duration in Seconds for a 360 Samples/Sec File

Duration in Seconds for a 1000 Samples/Sec File

Can be Used as a Periodic Repeating Waveform With the Sample Rate Adjustable Between 40 & 180 BPM

1-28

1000

4.000

2.778

1.000

Yes

5-7
12-14
19-21
26-28

2880

11.520

8.000

2.880

No *

6, 7
13, 14
20, 21
27, 28

3600

14.400

10.000

3.600

No *

7
14
21
28

21600

86.400

60.000

21.600

No *

0

80 mS Standardization Mark 1 mV Amplitude Repeating Once/Sec

* Longer segments of waveforms would be used at their original rate; these could be used in a case in which there is a desired ECG event to play out. Such an ECG event might be a PVC (Premature Ventricular Contraction) event embedded in the time duration of the waveform.

The RealECG Downloading software will detect the number of samples for the waveform to be downloaded, and will automatically allow the waveform to be stored only in the allowable program number slots.

Waveform #0 is the Standardization Mark used for calibration of ECG monitoring equipment. The Standardization Mark is a rectangular wave which is 80 milliSeconds wide and 1 milliVolt high. It will occur once per second if selected. Figure 7A shows the 'Select Main Wave Screen' when the Standardization Mark is selected. Figure 7B shows the dimensions of the Standardization Mark.


Figure 7A: Standardization Mark Selected


Figure 7B: Standardization Mark

 

CHANGE PARAMETERS MENU > SELECT RATE OPTION

The second option of the 'Change Parameters' menu is the "Select Rate" Option.


Figure 8: Change Rate Menu Option

Choosing the 'Select Rate' option of the 'Change Parameters' menu brings up the "Select Rate" screen, as shown in Figure 9A.

 


Figure 9A: Change Rate Screen

The <UP> and <DOWN> arrows may be used to change the Rate.

RealECG waveforms of 1000 data points or less have been set up to be periodically repeating waveforms. This allows a portion of an ECG record to be chosen that is made up of, for instance, a segment starting at a P-wave which includes the following QRS complex and T-wave segment. The remaining data points have been "padded" starting near the end of the T-wave. In this scenario, the user can, by using the "Change Rate" option, adjust the rate of the repeating waveform from 40 to 180 BPM. The system includes or discards, as appropriate, the padded wave points when repeating the waveform to produce the rate chosen. An example of such a wave is shown in Figure 9B.


Figure 9B: Sample ECG Wave with Padding

 

CHANGE PARAMETERS MENU > SELECT VOLTAGE PEAK-TO-PEAK OPTION

The third option of the 'Change Parameters' menu is the "Select Vp-p" Option. This option allows the user to vary the peak-to-peak overall output voltage of the simulated waveform produced.


Figure 10: Change Vp-p Menu Option

A sub menu will be reached directing the user to change either the main or insert wave peak-to-peak overall output voltage. Choosing the 'Select Vp-p' option of the 'Change Parameters' menu brings up the "Select Vp-p" Main or Insert Menu, as shown in Figure 11

 


Figure 11: Change Vp-p Main or Insert Menu

Choosing either the 'Select Main Vp-p' or 'Select Insert Vp-p' options brings up the "Change Vp-p" screen, as shown in Figure 12

 


Figure 12: Change Vp-p Screen

The <UP> and <DOWN> arrows may be used to change the Vp-p from 0.5 mV to 4.8 mV when the hardware is configured for the low range, and from 15 mV to 146.7 mV when the hardware is configured for the high range. The low range could be used to test/verify ECG monitoring equipment; the high range could be used to test/verify pacemaker equipment.

 

CHANGE PARAMETERS MENU > SELECT INSERT WAVE OPTION

The last option of the 'Change Parameters' menu is the "Select Insert Wave" Option.


Figure 13: Change Insert Wave Menu Option

Selecting this option will bring the user to the 'Insert Wave' menu. Figure 14 shows two options associated with choosing an insert wave. When choosing the option shown in figure 8, the user may choose a stored waveform from the same set of waveforms when choosing the main waveform

 


Figure 14: Select Insert Wave Menu Option

The Real ECG simulator allows for another waveform, called the insert wave, to be inserted while the main waveform is in execution. This allows testing for ECG events such as, but not limited to, premature ventricular contractions (PVC's). Using this example, a PVC waveform would be loaded as an insert wave. By selecting the "Select Insert Wave" in the' Insert Wave' menu, the user may choose a stored waveform from the same set of waveforms when choosing the main waveform, as shown in Figure 15.

 


Figure 15: Select Insert Wave Screen

 

Referring to Figure 16, by selection the "Select Insert Time" option in the 'Insert Wave' menu, the 'Insert Time' menu will be displayed.


Figure 16: Select Insert Time Menu Option

By selection the "Select Insert Time" option in the 'Insert Wave' menu, the 'Insert Time' menu will be displayed. The 'Insert Time' menu is in Figure 17.

 


Figure 17: Select Insert Time After Main Menu Option

There are two choices regarding the time at which the insert wave will start when choosing the "Insert Wave" option in the 'Runtime Options' menu. The insert waveform can start when the main waveform has completed its present cycle; this is the option that will be selected with the choice shown in Figure 17.

 


Figure 18: Select Insert Time Immediately Menu Option

The other Insert-Time option is for the insert wave to start immediately when the "Insert Wave" option is chosen in the 'Runtime Options' menu; this is the option that will be selected with the choice shown in Figure 18.

 

MAIN MENU > RUNTIME OPTIONS


Figure 19: Runtime Options Main Menu Option

Referring to Figure 19, selecting the "Runtime Options" option of the 'Main menu' will bring the 'Runtime Options' menu to the display.

 


Figure 20: Start/Synchronize Runtime Options Menu Option

Selecting the "Start/Synchronize" option, as shown in Figure 20, will start the waveform output. Selecting this option again while the waveform output is running will stop the waveform output. If another RealECG unit is connected to the RS232 serial port via a null modem cable, the other unit will start and stop in sync.

 


Figure 21: Insert Wave Runtime Options Menu Option

Selecting the "Insert Wave" option of the 'Runtime Options' menu will cause the insert wave to run for cycle, as shown in Figure 21. The type of insertion will depend on the option selected in the 'Insert Time' menu described above. If no insert wave has been loaded from memory, then this option will not be available.

 

 

DOWNLOADING WAVEFORMS INTO THE REAL ECG SIMULATOR

 

REALECG.EXE APPLICATION

Figure 22-1: realecg.exe Software Screen Shot

 

SERIAL CONNECTION

To download waveforms, the Real ECG simulator must be connected with an RS232 serial cable to a functioning COM port on the PC. A USB adapter is supplied with the unit for using a USB serial port. Launch the application "realecg.exe as shown in Figure 22-1.

 

Figure 22-2:realecg.exe Software Showing Opening of Port

If the connected COM port is not COM1(the default), the COM port must be selected by choosing the Communications->CommParams... menu option of the realecg.exe application. Select the connected COM port in the Communications Parameter box, then choose OK. The COM port must then be opened by selecting the Communications->OpenPort menu option as shown in Figure 22-2.

 

OPEN MODIFIED RECORD FILE TO LOAD INTO SIMULATOR

Figure 23-1:realecg.exe Software Showing Opening of Modified Record File

Choose the File->Open... menu option to open a Real ECG modified record file as shown in Figure 23-1. If the file chosen is not a valid Real ECG file, an error message box will appear indicating so.

 

Figure 23-2: realecg.exe Software Showing Waveform of Open Modified Record File

Figure 23-2 shows an ECG waveform file that is approximately one minute in length.

The origin information associated with the waveform is shown in the Waveform Information box towards the upper left of the application. The waveform itself is shown in the scrolling Graph window, with the waveform being shown in red. The sample length of 21470 is shown in the Sample Length window to the right of the "Erase Memory" button. The sample rate of 360 samples/sec is shown in the Sample Rate window next to the Sample Length window. The total time length of the waveform can be determined by dividing the sample length by the sample rate: 21470/360 = ~60 seconds.

The waveform number can be adjusted via the up/down arrows in the Waveform Number window below the Sample Length window. This represents the number associated with where the waveform will be stored in the memory of the Real ECG simulator unit. Please be aware that the longer duration waveforms are restricted to certain program numbers. For instance, 1 minute (60 sec) waveforms with a 360 sample rate can be stored at program number locations 7, 14, 21, and 28.

The RealECG Downloading software will detect the number of samples for the waveform to be downloaded, and will automatically allow the waveform to be stored only in the allowable program number slots.

 

DOWNLOAD QUEUE

You may either download A loaded waveform immediately, or add it to the download queue to download up to 28 waveforms consecutively. To add the loaded waveform to the download queue, select the "Add To Download Queue" button. The download queue can be cleared by selecting the "Clear Download Queue" button.

Figure 23-3 shows several files loaded into the download queue. The files that are currently loaded into the queue can be viewed by selecting the drop-down arrow on the right of the queue drop-down box. The name of the file is shown, followed by the waveform store number. Click on a particular member of the queue to see the waveform on the graph.

Figure 23-3: realecg.exe Software Downloading Queue

 

DOWNLOADING WAVEFORMS

Downloading may be initiated by the "Down Load Waveform" button. The "Downloading" progress bar will appear to indicate the download progress as shown in Figure 24.

Figure 24: realecg.exe Software Showing Downloading of Waveform

When all the record files from the download queue have been downloaded successfully, the "Downloading" progress bar will disappear. If the download is unsuccessful, an error message will appear showing the error encountered.

 

LIST DOWNLOADED WAVEFORMS

You may view all the waveforms loaded into the RealECG unit by selecting the "List Waveform Memory" button. Figure 25 shows the window that appears.

Figure 25: realecg.exe Software Showing Waveform Downloaded Memory List

 

 

INSTALLING USB ADAPTER DRIVERS FOR WINDOWS XP

 

It is a good idea to disconnect the computer from the Internet before installing the drivers to prevent windows from looking for a suitable driver over the web, although this is not absolutely necessary.

Please be sure that the RealECG Software Suite has been installed before plugging in the USB adapter to the computer. After the RealECG Software Suite has been installed, begin by plugging in the USB adapter into an available USB slot. There are two drivers that need to be installed for the USB adapter, so the driver installation procedure will be repeated a second time by Windows; don't be alarmed when the process starts again. Both of these driver installations are required for the USB adapter to operate.

If the computer is connected to the web, and if Windows XP is configured to warn the user before looking for a driver over the web, a dialog box similar to the one shown in Figure 27 will appear. Choose the radio button option "No, not this time," and click the "Next" button. If the computer is not connected to the web, this dialog box may not appear.

Figure 27: USB Driver Installation, Web Connect Inquiry-1st Time

 

A dialog box similar to the one shown in Figure 28 should then appear asking how to search for the drivers. If the computer is not connected to the web, this is likely to be the first dialog box to appear. Choose the radio button option "Install from a list or specific location (Advanced)," and click the "Next" button.

Figure 28: USB Driver Installation, Search Type-1st Time

 

A dialog box similar to the one shown in Figure 29 should then appear asking for search locations for the drivers. Choose the radio button option "Search for the best driver in these locations." Check the checkbox labeled "Include this location in the search." The search location to include should be: "C:\Program Files\RealECG\USB Adapter Drivers;" you can use the "Browse" button to navigate to the "C:\Program Files\RealECG\USB Adapter Drivers" folder to fill in the field. This will also confirm that the folder with the drivers actually exists. Click the "Next" button to proceed.

Figure 29: USB Driver Installation, Search Location-1st Time

 

A Windows logo testing alert dialog box similar to the one shown in Figure 30 may appear. You may click the "Continue Anyway" button to proceed if you are certain that the driver that came with the RealECG software suite were chosen.

Figure 30: USB Driver Installation, Logo Alert-1st Time

 

The driver will be loaded indicated by a dialog box similar to the one shown in Figure 31.

Figure 31: USB Driver Installation, Processing-1st Time

 

The completion of the first part of the driver installation will be indicated by a dialog box similar to the one shown in Figure 32. Click the "Finish" button to proceed to the second part of the installation.

Figure 32: USB Driver Installation, First Part Finished

 

The driver installation procedure will be repeated a second time by Windows. If the computer is connected to the web, and if Windows XP is configured to warn the user before looking for a driver over the web, a dialog box similar to the one shown in Figure 33 will appear. Choose the radio button option "No, not this time," and click the "Next" button. If the computer is not connected to the web, this dialog box may not appear.

Figure 33: USB Driver Installation, Web Connect Inquiry-2nd Time

 

A dialog box similar to the one shown in Figure 34 should then appear asking how to search for the drivers. If the computer is not connected to the web, this is likely to be the first dialog box to appear. Choose the radio button option "Install from a list or specific location (Advanced)," and click the "Next" button.

Figure 34: USB Driver Installation, Search Type-2nd Time

 

A dialog box similar to the one shown in Figure 35 should then appear asking for search locations for the drivers. Choose the radio button option "Search for the best driver in these locations." Check the checkbox labeled "Include this location in the search." The search location to include should be: "C:\Program Files\RealECG\USB Adapter Drivers;" you can use the "Browse" button to navigate to the "C:\Program Files\RealECG\USB Adapter Drivers" folder to fill in the field. This will also confirm that the folder with the drivers actually exists. Click the "Next" button to proceed.

Figure 35: USB Driver Installation, Search Location-2nd Time

 

A Windows logo testing alert dialog box similar to the one shown in Figure 36 may appear. You may click the "Continue Anyway" button to proceed if you are certain that the driver that came with the RealECG software suite were chosen.

Figure 36: USB Driver Installation, Logo Alert-2nd Time

 

The driver will be loaded indicated by a dialog box similar to the one shown in Figure 37.

Figure 37: USB Driver Installation, Processing-2nd Time

 

The completion of the second and final part of the driver installation will be indicated by a dialog box similar to the one shown in Figure 38. Click the "Finish" button to complete the installation. Proceed to the next section to determine the serial port number for the USB adapter.

Figure 38: USB Driver Installation, 2nd and Final Part Finished

 

 

FIND USB ADAPTER COM PORT NUMBER, WINDOWS XP

 

You must determine the COM port assigned to the USB adapter to Set the COM port in the RealECG Downloading Software. To find the COM port number assigned to the USB adapter in Windows XP, first go to the System Properties dialog box by one of the two methods shown below:

  • If there is a "My Computer" Icon on the desktop, right-click on it and choose "Properties."
  • From the "Start" Menu, go to "Settings > Control Panel." Double-click on "System."

When the dialog box similar to the one shown in Figure 39 appears, choose the "Device Manager" button.

Figure 39: System Properties Dialog Box

 

In the Device Manager, find the heading labeled "Ports (COM & LPT)." Find the sub-headings by clicking the '+' icon to the left of the "Ports (COM & LPT)" heading. The USB driver serial port will be listed as a sub-heading as: "USB Serial Port (COM#)," in which '#' will be the COM port number assigned to the USB serial adapter as shown in Figure 40. In the case of Figure 40, the USB adapter was assigned to COM5.

Figure 40: Device Manager Showing USB COM Port

 

 

INSTALLING USB ADAPTER DRIVERS FOR WINDOWS VISTA

 

It is a good idea to disconnect the computer from the Internet before installing the drivers to prevent windows from looking for a suitable driver over the web, although this is not absolutely necessary.

Please be sure that the RealECG Software Suite has been installed before plugging in the USB adapter to the computer. After the RealECG Software Suite has been installed, begin by plugging in the USB adapter into an available USB slot. There are two drivers that need to be installed for the USB adapter, so the driver installation procedure will be repeated a second time by Windows; don't be alarmed when the process starts again. Both of these driver installations are required for the USB adapter to operate.

After plugging in the USB adapter into a USB port, a dialog box similar to the one shown in Figure 41 should appear. Choose the option: "Locate and install driver software (recommended)."

Figure 41: Vista Locate Driver Dialog Box-1st Time

 

If the computer is connected to the web, and if Windows Vista is configured to warn the user before looking for a driver over the web, a dialog box similar to the one shown in Figure 42 should appear. Choose the option: "Don't search online." If the computer is not connected to the web, this dialog box may not appear.

Figure 42: Vista Search Online Inquiry Dialog Box-1st Time

 

A dialog box similar to the one shown in Figure 42 should appear asking for a disk. Choose the option: "I don't have a disk. Show me other options."

Figure 43: Vista Search Options Dialog Box-1st Time

 

A dialog box similar to the one shown in Figure 44 should appear next. Choose the option: "Browse my computer for driver software (advanced)."

Figure 44: Vista Search Dialog Box-1st Time

 

A dialog box similar to the one shown in Figure 45 should appear next. The search location to include should be: "C:\Program Files\RealECG\USB Adapter Drivers;" you can use the "Browse" button to navigate to the "C:\Program Files\RealECG\USB Adapter Drivers" folder to fill in the field. This will also confirm that the folder with the drivers actually exists. Be sure the "include subfolders" checkbox is checked. Click the "Next" button to proceed.

Figure 45: Vista Search Location Dialog Box-1st Time

 

A Windows logo testing alert dialog box similar to the one shown in Figure 46 may appear. You may click the "Install this driver software anyway" button to proceed if you are certain that the driver that came with the RealECG software suite were chosen.

Figure 46: Vista Logo Alert-1st Time

 

The driver will be loaded indicated by a dialog box similar to the one shown in Figure 47.

Figure 47: Vista Installing Dialog Box-1st Time

 

The completion of the first part of the driver installation will be indicated by a dialog box similar to the one shown in Figure 48. Click the "Close" button to proceed to the second part of the installation.

Figure 48: Vista USB Driver Installation, First Part Finished

 

The driver installation procedure will be repeated a second time by Windows. A dialog box similar to the one shown in Figure 49 should appear next. Choose the option: "Locate and install driver software (recommended)."

Figure 49: Vista Locate Driver Dialog Box-2nd Time

 

If the computer is connected to the web, and if Windows Vista is configured to warn the user before looking for a driver over the web, a dialog box similar to the one shown in Figure 50 should appear. Choose the option: "Don't search online." If the computer is not connected to the web, this dialog box may not appear.

Figure 50: Vista Search Online Inquiry Dialog Box-2nd Time

 

A dialog box similar to the one shown in Figure 51 should appear asking for a disk. Choose the option: "I don't have a disk. Show me other options."

Figure 51: Vista Search Options Dialog Box-2nd Time

 

A dialog box similar to the one shown in Figure 52 should appear next. Choose the option: "Browse my computer for driver software (advanced)."

Figure 52: Vista Search Dialog Box-2nd Time

 

A dialog box similar to the one shown in Figure 53 should appear next. The search location to include should be: "C:\Program Files\RealECG\USB Adapter Drivers;" you can use the "Browse" button to navigate to the "C:\Program Files\RealECG\USB Adapter Drivers" folder to fill in the field. This will also confirm that the folder with the drivers actually exists. Be sure the "include subfolders" checkbox is checked. Click the "Next" button to proceed.

Figure 53: Vista Search Location Dialog Box-2nd Time

 

A Windows logo testing alert dialog box similar to the one shown in Figure 54 may appear. You may click the "Install this driver software anyway" button to proceed if you are certain that the driver that came with the RealECG software suite were chosen.

Figure 54: Vista Logo Alert-2nd Time

 

The driver will be loaded indicated by a dialog box similar to the one shown in Figure 55.

Figure 55: Vista Installing Dialog Box-2nd Time

 

The completion of the second and final part of the driver installation will be indicated by a dialog box similar to the one shown in Figure 56. Click the "Close" button to complete the installation. Proceed to the next section to determine the serial port number for the USB adapter.

Figure 56: Vista USB Driver Installation, Second and Final Part Finished

 

 

FIND USB ADAPTER COM PORT NUMBER, WINDOWS VISTA

 

You must determine the COM port assigned to the USB adapter to Set the COM port in the RealECG Downloading Software. To find the COM port number assigned to the USB adapter in Windows Vista, first go to the Control Panel/System dialog box via the "Start" menu as shown in Figure 57. Choose "Device Manager" from the Control Panel/System Box options.

Figure 57: Vista Control Panel/System Dialog Box

 

In the Device Manager, find the heading labeled "Ports (COM & LPT)." Find the sub-headings by clicking the '+' icon to the left of the "Ports (COM & LPT)" heading. The USB driver serial port will be listed as a sub-heading as: "USB Serial Port (COM#)," in which '#' will be the COM port number assigned to the USB serial adapter as shown in Figure 58. In the case of Figure 58, the USB adapter was assigned to COM4.

Figure 58: Device Manager Showing USB COM Port

 

 

SETTING THE COM PORT IN THE REALECG DOWNLOADING SOFTWARE

 

In the RealECG Downloading Software, choose Communications > CommParams... from the main menu as shown in Figure 59.

Figure 59: RealECG Downloading Software CommParams Main Menu Option

 

In the RealECG Downloading Software CommParams... dialog box, set the COM port from the "Serial Port" dropdown list box as shown in Figure 60. If using a USB Adapter, this will be the number of the COM port assigned to the adapter in either Windows XP or Windows Vista.

Figure 60: RealECG Downloading Software CommParams Box COM Port Setting

 

 

CHANGE BATTERIES ON THE REALECG UNIT

 

To change the batteries in the RealECG unit, you will need a medium-small Phillips-head screwdriver as shown in Figure 61-1.

Figure 61-1: Phillips-head Screw Driver Used to Change Batteries

 

Lay the RealECG unit on its side as shown in Figure 61-2, and remove the 6 screws pointed to by the blue arrows.

Figure 61-2: Bottom of RealECG Unit

 

Remove the top of the unit while being careful to not over-extend the cable connecting the push-buttons on the top half to the motherboard on the bottom half. Place the bottom half flat on the bench, with the top half on its side close to the bottom half as shown in Figure 61-3.

Figure 61-3: RealECG Unit Open with Batteries Accessible

 

The 10 AA batteries can now be replaced. When done, reconnect the top and bottom halves in the reverse order of disassembly.

 

 

RealECG SIMULATION CONNECTION SETUPS

 

RealECG MLII CONNECTION SETUP

Figure 62-1 shows a suggested connection setup to simulate a standard 3-lead single channel MLII signal. The human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual. The signals from the RealECG unit should go directly into the ECG monitor.

Figure 62-1: Suggested Connection Setup to Simulate a Standard 3-lead Single Channel MLII signal.

Please note that the human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual.

 

Figures 62-2 and 62-3 show alternate views of the suggested connection setup to simulate a standard 3-lead single channel MLII signal.

Figure 62-2: Alternate View of Suggested Connection Setup to Simulate a Standard 3-lead Single Channel MLII signal.

Please note that the human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual.

 

Figure 62-3: Alternate View of Suggested Connection Setup to Simulate a Standard 3-lead Single Channel MLII signal.

Please note that the human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual.

 

RealECG MLII & V1 CONNECTION SETUP

Figure 63-1 shows a suggested connection setup using two RealECG units connected via a sync cable to simulate a standard 5-lead double channel configuration consisting of an MLII signal and a V1 signal. The human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual. The signals from the RealECG unit should go directly into the ECG monitor.

Figure 63-1: Suggested Connection Setup Using Two Real ECG Units Connected Via a Sync Cable to Simulate a Standard 5-lead Double Channel Configuration with MLII & V1 signals.

Please note that the human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual.

 

Figure 63-2 shows two RealECG units connected with a sync cable.

Figure 63-2: Sync Cable to Synchronize Two RealECG Units.

 

Figures 62-3, 62-4, and 62-5 show alternate views of the suggested connection setup to simulate a standard 5-lead double channel configuration with MLII & V1 signals.

Figure 63-3: Alternate View of Suggested Connection Setup Using Two RealECG Units Connected With a Sync Cable to Simulate a Standard 5-lead Double Channel Configuration With MLII & V1 signals.

Please note that the human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual.

 

Figure 63-4: Alternate View of Suggested Connection Setup Using Two RealECG Units Connected With a Sync Cable to Simulate a Standard 5-lead Double Channel Configuration With MLII & V1 signals.

Please note that the human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual.

 

Figure 63-5: Alternate View of Suggested Connection Setup Using Two RealECG Units Connected With a Sync Cable to Simulate a Standard 5-lead Double Channel Configuration With MLII & V1 signals.

Please note that the human form is there only to show where the signals from the RealECG unit could be originating from; the signals from the RealECG unit SHOULD NOT be routed to a living individual.

 

 

© 2005 - 2020 Tech Systems, All Rights Reserved