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Frequently Asked Questions: DynaPulse 200M System



I have upgraded my computer operating system and now my DynaPulse does not work. What do I have to do to get it to work?

You must verify that the DynaPulse software you currently are running is compatible with your new operating system. V3.84 is compatible with Windows 7, Vista, XP and 2000. Go to the 'Help' menu in the DynaPulse program and click on 'About DynaPulse' to verify the version number. If you have a version previous to V3.84, upgrading your software is recommended.

(An indication that your software is incompatible with your operating system is the misalignment of the graphics such as, the mercury bar on your screen is upside down when you begin to pump).

If you are in need of a software update, please call the Pulse Metric, Inc Sales Department at (760) 842-8278 or (760) 842-8224.

How do I calibrate my DynaPulse?

There is a way to check the calibration of your unit against a standard sphygmomanometer.

Checking Calibration of DP200M To check the calibration of the DP200M in reference to a standard sphygmomanometer, you will need to connect a sphygmomanometer (recommend vertical mercury type) T-connected with the DP200M and the cuff. Wrap the cuff loosely around a bottle that approximates an arm size (non-crushable).

Please be aware before you continue that you should not open the DP200M to adjust the calibration of the unit, or you will void the warranty. Also, only perform this procedure if you think the DP200M is off by more than +/- 3mmHg.

Steps to check calibration:

  1. Once sphygmomanometer is connected in line with the DP200M, cuff and pump, run the DynaPulse software.
  2. Go to Measure and set the high range to 220mmHg and leave the low range at default of 50mmHg.
  3. Set the knob on the top of the DP200M to 1. This is the slowest bleed rate possible.
  4. Go to Measure and Start. Select three measurement points such as 200, 160, 80 mm Hg to compare the sphygmomanometer with what you see on screen. Make sure that the air release knob on the bulb is completely closed before actually starting the measure.
  5. Once the measurement begins, record the values you get from the sphygmomanometer and the computer screen as the air slowly leaks from the system.
  6. If there is greater than +/- 3 mmHg difference between the values, contact Pulse Metric to schedule a calibration of your DP200M. Again, do not try to calibrate the DP200M yourself.

Adjustments made to the unit to re-adjust calibration can only be made by authorized Pulse Metric service personnel. Any tampering of the unit voids all warranties.

Drastic changes in temperature or humidity may affect blood pressure readings. The Zero Reset Feature compensates for these variations by resetting electronically the pressure sensor. Select Zero Reset from your Options menu before taking your very first measurement.

How and when do I set my air release?(Knob or Screw)

When taking a measurement, your air release time should be between 25 to 35 seconds. In order to be within this range, you must set your air release knob or screw at the correct position. Depending on the size of the cuff you are using, you may set the knob anywhere from 3 to 7 with a standard size cuff, and 7 and up with a large cuff.

For the DP200M model with the screw adjustment, which is located next to the battery compartment, trial and error is your best option. First, take a measurement. If the measurement goes beyond 35 seconds, turn the screw toward the "F" slightly until you reach the desired release time. If the measurement is below 25 seconds, turn the screw toward the "S" until the desired range is reached.


I am trying to install the latest software on my Windows 7 / Vista computer, but receive errors during installation. What should I do?

Follow these installation instructions: Windows 7   Vista

Every time I try to take a measurement I get a message saying communication error. My cable is connected and my batteries are brand new. What should I do?

Go to your options menu and do a comcheck first. This automatically identifies the port the DynaPulse is connected to. If the software is unable to to find your DynaPulse, then follow these instructions:

First, make sure that all your batteries are in good condition( 1.5V). Check the battery contact plates in your battery compartment to make sure there are no signs of corrosion or oxidation. Verify that the batteries are pointed in the correct direction. Replace battery compartment cover.

Now check the serial cable. Disconnect the cable from the DynaPulse and inspect the pins on the connector. Verify that none of the pins are bent out of shape. Reconnect if everything looks fine. Run comcheck again to see if the software can now find your DynaPulse.

If this fails, go to Start/Settings/Control Panel/System/Device Manager/Ports (Windows 95, 98). Verify that the port you are using is identified in your Device Manger. If the port is not listed then it may be possible that the port is disabled in your CMOS settings on your computer. This will require you to enter the CMOS settings and enable Serial Port #X.

If the port is in working condition and the batteries are good, then it maybe possible that the cable is faulty. At this point, you may purchase a new cable or you can send in the unit for repair service to verify the bad cable. In order to send in the unit for repair service, you must call Pulse Metric to obtain a Returned Merchandise Authorization number(RMA#).

If comcheck is able to find your DynaPulse, but still has a communication error when a measurement is attempted, then follow these instructions:

Make sure that the current DynaPulse software you are using is compatible with your operating system. V3.84 is compatible with Windows 7, Vista, XP and 2000. If you have a version previous to V3.84, upgrading your software is recommended.

Go to Start/Settings/System/Device Manger/ Ports/ Port Identified(1,2,3, or 4)/Port settings/ Advanced. Remove check mark next to Use FIFO Buffers and click OK. Now go back to the DynaPulse program and run comcheck first. Once it identifies the port, try to take a measurement. If this fails go back to your Advanced Port Settings and replace the check mark next to Use FIFO Buffers. Lower the settings for transmitting and receiving buffers. It should be set at 1 or all the way to the left. Retry measurement.

If it still fails, check your IRQ settings for each of your communication ports. Each communication port should have its own unique IRQ setting. This can be verified by going to Start/Settings/Control Panel/System/Device Manager/Ports. Choose each port (1,2,3, or 4) and go to Resources. This will display your input/output range and your IRQ settings(Interrupt Request).

All programs should be disabled if communication errors occur by hitting Ctrl-Alt-Del at the same time. This will allow you to disable all programs running in your operating system. Choose End Task for all programs except for Systray and Explorer. Software that have conflicted with the Dynapulse program include Stacker V4.0, After Dark, OPWARE, MS Outlook, and Jfax. Once programs are disabled, continue with the troubleshooting process.

If after making all these changes and the DynaPulse still fails, please contact the Technical Support department at (760) 842-8224 or send email to

After every measurement that I take, I get a message saying "Air release too fast…". How do I resolve this problem?

On the DynaPulse model with the knob, lower the index number on the unit itself and measure again. Lower the index number until the desired range of 25 to 35 seconds is obtained.

If you have a unit that has an air release screw next to the battery compartment, then turn the screw toward the "S"(slow) with a screw driver. This will take some trial and error to get the air release to 25 to 35 seconds.

I can not install my software. I get a general protection fault error message. How do I solve this problem?

If this occurs, then disable all other programs. Hit Ctrl-Alt-Del all at the same time. Choose End task on all programs except for Systray and Explorer. Reinstall as usual.

Whenever I take a measurement, I try to save under the file menu, but the save option isn't highlighted. How do I save my measurements?

Make sure that a user is chosen correctly from the user list. In order to choose a user, you must double click on the name. When done correctly you will see a trend data graph pop up on the screen and the name of the user will be displayed next to NAME:. Taking a measurement when Guest is next to NAME: will not allow you to save any data.

I get a message saying "Increase high range". How do I do that?

Under the Measure menu, choose high range. Move to the next number up until you are able to take a measurement without the message.