Müller & Sebastiani Elektronik GmbH
Deutsche Version

Zeus Defibrillation Simulator
phantom 320 ECG Simulator
MS410 ECG Simulator
MS400 Calibration Signal Generator
Zeus Defibrillation Simulator


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Frequently Asked Questions

Zeus Defibrillation Simulator

MS410 ECG Simulator

phantom 320 ECG Simulator


Zeus Defibrillation Simulator

Q: Is there a possibility for the functional testing of the device?

A: You can test the output voltage with a high voltage probe and an oscilloscope. WARNING! Please note the safety regulations for measurements at high voltage! The discharge curve of the capacitor at the oscilloscope can be compared to the values in the calibration report.

Q: When does the device have to be sent back for calibration?

A: We recommend a calibration after approximately 5000 discharges or after 24 months.

Q: What is the maximum energy of the device at the testing output?

A: The maximum energy is calculated from the equitation:
W = ½ * C * U² = ½ * 32 uF * 5000² = 400 J

Which model variants comply with which standards?

A: Depending on the model variant (Zeus or Zeus 25/400) the Zeus allows the standardized testing of the defibrillation protection e.g. in accordance with the standards EN 60601-1, EN 60601-2-25, EN 60601-2-27 and EN 60601-2-49.

The device provides an integrated 10 Hz sine-wave generator (output voltage according to the latest issues of the standards mentioned above).

Q: Is there a version for 120 V supply voltage?

A: No, you need a voltage converter for other supply voltages.

Q: Can the device also be calibrated in the USA or in other countries?

A: No, the device must be sent back to us for calibration.

Q: For a measurement with the oscilloscope at the measurement output of the Zeus voltages up to 8 Vss occur although no disruptive discharge can be noticed.

A: The time basis of the oscilloscope is not correct (under 1 ms). EN / IEC 60601-1: 12-2013 for testing in accordance with point shows in figure 9 or 10 the RC element for the recording of the discharges. R2 = 100 kOhm and C1 respectively C2 = 1 uF results in a time constant of 100 ms! All signals which are recorded with a lower time basis than mentioned above are to be considered as pure high voltage interfering signals.

Q: How can I use the "Measuring-In"-Input?

A: This input serves for the measurement of possible voltage at tangible enclosure parts of the device under test. See figure 9 and 10 in EN / IEC 60601-1: 12-2013

Q: Does the Zeus provide patient simulation?

A: The patient is simulated as R1 and R3 as described in the corresponding standards. See the block diagram in the Zeus instruction manual and the corresponding figures in the standards.

Q: What is to be considered in case of converting the output voltage to 20 Vss?

A: After the conversion of the output voltage of the sine-wave generator to 20 Vss (results in 5 mVss on the print) in the latest issues of the standards EN 60601-1, EN 60601-2-25, EN 60601-2-27 und EN 60601-2-49, this version of the Zeus with 5 Vss is no longer available.

If required you can induce the conversion of your Zeus with 5 Vss generator voltage to 20 Vss.
We would gladly submit a corresponding offer to you.


MS410 ECG Simulator

Q: What can I do, if I perform the radiated immunity test as demanded in 60601-2-25 and I have distortions in the ECG signal?

A: Try to shield the MS410 as suggested in this standard at key 7 of figure 109.

Q: In which languages is the MS410 available?

A: In the "Adjustment" menu you can select "German" or "English".

Q: Does the MS410 include all testing ECGs of the standard DIN EN / ISO 60601-2-51?

A: No, the MS410 includes the signals of the so-called CTS-Atlas (appendix HH, DIN EN / ISO 60601-2-51: 02-2004) as well as artificial but adapted to human ECG signal forms.

Q: When does the device have to be sent back for calibration?

A: We recommend a calibration after 60 months.

Q: In the MS410 instruction manual, page 22 (26-27) the 24 types of ECG signals are described. Can these signals be used for testing in accordance with the standard IEC 60601-2-51 point 50.102.3?

A: These ECG signals are generated artificially in spite of their "natural" appearance. They have been generated to enable a quick and simple testing of an ECG device. Regrettably they are not suitable for a testing in accordance with IEC 60601-2-51: 02-2004, point 50.102.3. For these tests the signal curves need to be used as described in the standards.

Q: Are the amplitudes of the MS410 continuously adjustable?

A: No, the amplitudes are set fixed in the particular programs.

Q: The display is dark and difficult to read.

A: Hold the MS410 away from the body and watch the display slanted from below.
You can dimly read the menue and change the settings:

  • Select Adjustment from the mainmenue (mainmenue arrow buttons).
  • Press the submenue button until Contrast is displayed (submenue arrow button, 2 x).
  • Press the up-arrow button until the contrast is optimal.

Q: Device (display) does not switch on anymore.

A: Possible reasons

  • Several attempts to switch on the device with empty batteries
  • Temporary interruption of power supply, e.g. caused by a fall to the ground
  • Batteries have been removed from the switched on device


Remove the batteries, wait at least 10 seconds and insert new batteries. Switch on the device again and follow the instructions for question "The display is dark and difficult to read" in the FAQ, if necessary.


phantom 320 ECG Simulator

Q: Is the phantom 320 also available in an US version with the corresponding AHA colours?

There are 2 versions available as described in the standards DIN EN / ISO 60601-2-51: 02-2004 point 101 und DIN EN / ISO 60601-2-27: 03-2004 point 1:
Version I with Code 1 (Europe) – part number 59.009
Version II with Code 2 (America) – part number 59.010

Q: Why does the ECG analysis recognize pathologic heartbeats for normal sinus rhythm?

A: Despite of the label "normal sinus rhythm" phantom 320 shows artifical ECG waves. Due to the focus on a cost-efficient solution as possible, we have deliberately dispensed from an adaptation to physiological signals. Some analysis thus show pathological events even for normal beats. If you need physiological signals we recommend our model MS410.

Q: When does the device have to be sent back for calibration?

A: We recommend a calibration after 60 months.



Q: Are there distributors of the products abroad?

A: No, please send your order directly to us.

Q: Is the sale and dispatch carried out also to the USA or only to Europe?

A: We sell and send to the whole world.

Q: Can you pay by credit card?

A: Regrettably no. The payment is only possible using bank transfer or by check.

Q: Who can carry out the calibration?

A: Please send the device to us. There are no companies which are authorized by us for the calibration.

Q: Are the devices delivered with the calibration certificate?

A: The MS400, MS410 and the Zeus are always delivered with the calibration certificate (included in the price). For the phantom 320 the certificate needs to be ordered and paid separately.

Q: How much time takes the calibration?

A: We need approximately 3 to 4 days for the calibration of the device.



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