A.M.P.I. Master-9 User Manual
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A.M.P.I. Master-9 User Manual

Programmable pulse stimulator
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Master-9
Programmable
Pulse Stimulator
User Manual

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Summary of Contents for A.M.P.I. Master-9

  • Page 1 Master-9 Programmable Pulse Stimulator User Manual...
  • Page 2 Master-9 is an advanced 9-channel pulse stimulator that offers many distinct and useful features. Master-9 is user friendly, easy to learn, and simple to program using user-preprogrammed paradigms. Please read this manual carefully and familiar yourself with all of Master-9 unique and advanced options.

  • Page 3: Table Of Contents

    Table of Contents GENERAL............................5 ..........................5 UTPUTS 11) ......................5 ARADIGMS CHAPTER -9 ..................... 5 ONTROLLING THE ASTER ......................6 IRMWARE PGRADES 13) ..............6 ECORD AND REPLAY INPUT WAVEFORMS CHAPTER : OUT A, B, C ..................6 OMBINED OUTPUTS : IN 1, 2, 8) ................
  • Page 4 XCEL FILE 13.3.1 Setting a waveform as Excel file: ................... 22 13.3.2 Long waveforms, up to 32K points ................22 13.3.3 Downloading the waveform from the PC to Master-9 ............ 23 13.3.4 Running the saved waveform ..................23 13.4 R ............

  • Page 5: General

    1 General Master-9 is a 9-channel pulse stimulator designed for nerve and muscle stimulation procedures and a broad range of neurophysiological stimulation requirements. Outputs Each channel delivers repetitive, single, train or twin outputs. The outputs can be set to monophasic and biphasic pulses and ramp outputs.

  • Page 6: Firmware Upgrades

    Clocks (chapter 15) In addition to its 9 channels, Master-9 features 2 internal clocks. The first counts the time in seconds up to 24 hours, while the other counts time in tenths of seconds, up to 1 hour.

  • Page 7: Front & Rear Panel

     Power Switch - located on the left side of the front panel.  Touchscreen (TS) - where the Master-9 parameters can be viewed and modified (Chapter 3).  Backlight switch - turns the TS backlight on & off.. ...

  • Page 8: The Touch-Screen

    3 The Touch-Screen When the Master-9 is turned on, the following screen is displayed: Figure 2 The parameters of the channels The screen is divided vertically: The right side of the screen displays the parameters of channels 1, 2, 3 and 4.

  • Page 9: The Manual Trig Keys

    The VER key The VER key is located under the connection table. Pressing the VER key shows the current version of the Master-9 (see Chapter 14). The VER key is also used for touchscreen calibration. The Clock key The Clock key is located under the VER key. Press this key to view and set the clock or stopwatch...

  • Page 10: Operating Modes

    4 Operating Modes Each of the 9 channels can operate in any of the following operating modes: FREE-RUN - The channel delivers pulses continuously according to the programmed Duration and Interval times. The channel is independent of the other channels. TRAIN - Following a trigger, the channel delivers a train of N pulses according to the programmed Delay, Duration and Interval times and the N parameter.

  • Page 11: Setting Parameters

    5 Setting Parameters The parameters The following parameters can be set for each channel:  D (duration) - Defines the time elapsing from the onset of the output pulse to its end (see Figure 3).  L (delay) - Defines the time elapsing from the beginning of the input trigger to the beginning of the output pulse.

  • Page 12: Setting The "N" Parameter

     Notes: 1. While setting parameters you can use the “DEL”, the decimal point and the “ESC” keys. 2. You can also use the “▲” and “▼” keys. The interval time defines the time elapsing between the beginning of a pulse and the beginning of the following pulse (interval = 1/rate, Figure 3).

  • Page 13: Applications

    6 Applications Figure 4 shows how Master-9 works. Do not try to follow the programming just yet; Chapter 11 will enable you to practice programming of the Master-9. duration interval Channel 3 FREE RUN delay Channel 2 TRIG triggered by #3...

  • Page 14: The Connection Table

    7 The Connection Table 1 2 3 4 5 6 7 8 9 A B C • • • • • • • • • • • ■ • • • • • • • • • • • • •...

  • Page 15: Triggering

    8 Triggering In TRAIN, TWIN, TRIG or DC modes you can trigger the channel as follows: 1. Manual triggering. 2. Via the internal connections. 3. Via the external inputs 1, 2 and 3. Manual triggering In the TRAIN, TWIN, TRIG or DC modes you can trigger the channel manually. The bottom line of the touch screen contains the "1", "2", "3", "4", "5", "6", "7", "8", "9"...

  • Page 16: The External Trigger Inputs

    9 The External Trigger Inputs In TRAIN, TWIN, TRIG or GATE modes, channels 1, 2 and 3 can be triggered or gated externally through the BNC inputs IN 1, 2, or 3. Channels 1, 2 and 3 can activate the other channels internally.

  • Page 17: Displaying Other Channels

    10 Displaying Other Channels 10.1 Displaying other channels 4 channels are displayed at a time. You can choose which channels to display. Example: Right now channels 1, 2, 3 and 4 are displayed. To switch channel 3 with channel 8: 1.

  • Page 18: Nine Stored Paradigms

    11 Nine Stored Paradigms A paradigm specifies the modes and parameters of all the channels and their internal connections. Master-9 stores nine different programmed paradigms. 11.1 Switching to another paradigm Example 1: To switch to paradigm number 7: Press the key "Px" (x=1,2..9 – x is the present paradigm number), then "switch to", "7".

  • Page 19: Demonstration Of Programming Master-9

    12 Demonstration of Programming Master-9 This chapter demonstrates how to program the Master-9.  Note: Each instruction is followed by a reference enabling you to find more information on similar instructions. Before you begin to program, the present paradigm must be cleared as follows: 1.
  • Page 20 Press the "2" manual trig key. ("2" is the channel number.) Note that each press on "2" delivers the triggered pulse. External triggering: Whenever there is an input pulse in the "IN 2" input, it triggers channel #2. iii. Internal triggering: You can internally connect each channel to any number of the other channels.
  • Page 21 Return to the main screen by pressing the "RETURN" key. The connection table displays all the current connections. Now you are ready to program the Master-9. Before you start programming, you must clear the current paradigm: Press keys "P1" and "CLEAR PAR".

  • Page 22: Channel 9: Replaying External Waveforms

    It is possible to save 9 independent recorded waveforms, one for each paradigm. For the following, please display channel 9 on the touchscreen of Master-9 (see chapter 9). Channel 9 can operate in one of the memory modes: RUN or MEM.

  • Page 23: Long Waveforms, Up To 32K Points

    32,768 values. Save this file with the extension .CSV 13.3.3 Downloading the waveform from the PC to Master-9 1. Connect the Master-9 unit to the PC using the USB cable and run the MASTER-9 CONTROL software (see the chapter 13).
  • Page 24 13.3.5 Running the long waveform (paradigm 9) In case that you use paradigm 9 (the Excel file contains up to 32K points), the points that were saved elapse during the set DURATION time of channel 9 (D9). In the case of paradigm 9, the minimal time resolution from one point to the next point is 5 µsec. Example 3 –...

  • Page 25: Record And Deliver A Waveform From An External Source

    IN1 (or IN2 or IN3) trigger input. For the following, please display channel 9 on the touch screen of Master-9 (see chapter 9). 1. Set channels 1 and 9 to the TRIG mode, and in the connection table connect channel 1 to trigger channel 9.

  • Page 26: Communication With A Pc

    You can download the following files and folders (free of charge): 1. Master-9 USB - The first time you use the USB port, the USB driver for windows must be installed. If the PC requests a file, browse to the Master-9 USB folder.

  • Page 27: Clocks

    15 Clocks In addition to its 9 channels, Master-9 features 2 internal clocks. The first one is called "Clock" and counts the time in seconds up to 24 hours. The other one is called "stopwatch" and it counts the time in tenths of seconds up to 1 hour.

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