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206.402.5241

[email protected] | 169 Western Ave W, Seattle, WA 98119 | www.eagleharbortech.com

Page 4 of 32

Table of Contents

Warranty ............................................................................................................................................ 4

Patents ................................................................................................................................................. 5

General Information .......................................................................................................................... 6

3.1

Specifications ................................................................................................................................ 7

3.2

Operational Space ......................................................................................................................... 8

3.3

Output Resistor Stage.................................................................................................................. 10

Controls and Connectors ................................................................................................................. 12

4.1

Front Panel .................................................................................................................................. 12

4.2

Back Panel .................................................................................................................................. 13

Preparation for Use ......................................................................................................................... 14

5.1

Unpacking ................................................................................................................................... 14

5.2

Operational Setup ........................................................................................................................ 15

Operation Instructions .................................................................................................................... 16

6.1

Turning on the NSP .................................................................................................................... 16

6.2

Turning off the NSP .................................................................................................................... 16

6.3

Adjusting Output Voltage ........................................................................................................... 16

6.4

Free-running Mode Operation .................................................................................................... 17

6.5

Triggered Mode Operation .......................................................................................................... 17

6.6

External Mode Operation (Optional) .......................................................................................... 18

FT-1 ................................................................................................................................................... 20

Troubleshooting ............................................................................................................................... 21

8.1

General ........................................................................................................................................ 21

8.2

Internal Mode .............................................................................................................................. 22

8.3

External Mode ............................................................................................................................. 23

8.4

Power Cycle Steps ...................................................................................................................... 24

8.5

Unit Functionality Test ............................................................................................................... 24

Appendix ........................................................................................................................................... 26

9.1

Internal Voltage Divider Waveforms .......................................................................................... 26

9.2

Capacitive Voltage Divider Waveforms ..................................................................................... 27

9.3

Dielectric Barrier Discharge Waveform ..................................................................................... 28

9.4

Arc Waveforms ........................................................................................................................... 29

9.5

NSP-120-30-N-500 Output Waveforms ..................................................................................... 29

9.6

NSP-120-20-P-500 Output Waveforms ...................................................................................... 31

User Notes ......................................................................................................................................... 32

Содержание NSP Series

Страница 1: ......

Страница 2: ...nt knowledge of the dangers and hazards of working with high voltage Do not attempt to approach or touch any internal or external circuits or components that are connected or have been connected to th...

Страница 3: ...minimized In general this involves keeping the HV output leads and load far from all grounded surfaces cables and other equipment A 2 minimum clearance between the high voltage output and other compo...

Страница 4: ...ions 16 6 1 Turning on the NSP 16 6 2 Turning off the NSP 16 6 3 Adjusting Output Voltage 16 6 4 Free running Mode Operation 17 6 5 Triggered Mode Operation 17 6 6 External Mode Operation Optional 18...

Страница 5: ...t was originally designed The above warranties cover only defects arising under normal use and do not include malfunctions or failures resulting from misuse abuse neglect alteration problems with elec...

Страница 6: ...using the floating configuration whenever possible However the floating output units may not be used with a grounded load In applications where the load is grounded the grounded output version of the...

Страница 7: ...s pulse width units Model Voltage kV Max Pulse Repetition Frequency kHz Rise Time ns Pulse Width ns Output Impedance NSP 120 5 5 10 20 40 500 300 NSP 120 10 10 10 20 40 500 600 NSP 120 20 20 10 20 40...

Страница 8: ...ating space The minimum pulse width is measured at maximum output voltage defined as the full width at half maximum FWHM Shorter pulses are possible at voltages below the NSP s maximum output voltage...

Страница 9: ...fo eagleharbortech com 169 Western Ave W Seattle WA 98119 www eagleharbortech com Page 9 of 32 Figure 3 Available Operating Space for the NSP 120 20 P 500 L Figure 4 Available Operating Space for the...

Страница 10: ...ore they can be charged again They also protect the NSP in the event that the load is left open or shorted The function of the series resistor is to limit the maximum output current which protects the...

Страница 11: ...Figure 6 The effective output impedance of the NSP is RS Note that if your NSP was purchased prior to 2019 please contact the manufacturer for values Pulser Model RS RP NSP 120 5 P N 500 L 71 5 k NSP...

Страница 12: ...ode Switch Switch to toggle between Internal and External Mode The LED corresponding to the selected mode will be illuminated green 6 Single Pulse Button If the Base Pulse Repetition Frequency Knob is...

Страница 13: ...Control This dial allows the user to adjust the output voltage in fine increments 13 External Trigger Input Optional When the Mode Switch is set to External Mode both the pulse width and repetition f...

Страница 14: ...supply 2 HV output cables one red and one black 3 Standard AC power cord for the NSP 4 User s manual If the user ordered the option to control the NSP remotely also find inside 5 FT 1 6 Fiber optic c...

Страница 15: ...5 To connect the load cables to the NSP a Loosen the two setscrews located on top of the black plastic block on the back of the NSP b The positive cable is marked in red and the negative cable is mar...

Страница 16: ...off the NSP The NSP should be turned off and the capacitive load returned to a safe state following use 1 Set HV Output Switch to the Disable position Standard HV safety protocol would also dictate se...

Страница 17: ...cy can be adjusted with the Pulse Repetition Frequency Base Control and Pulse Repetition Frequency Multiplier Control The output pulse repetition frequency is the product of the base pulse repetition...

Страница 18: ...External Mode also allows the pulse width to be controlled remotely This can be useful if the user has a system which requires pulse width modulation or otherwise wants to control the pulse width rem...

Страница 19: ...m 169 Western Ave W Seattle WA 98119 www eagleharbortech com Page 19 of 32 Figure 9 Input pulse width vs output pulse width for NSP 120 20 F 0 50 100 150 200 250 0 50 100 150 200 250 300 External Cont...

Страница 20: ...upply is unplugged as doing so could damage the internal electronics of the FT 1 The fiber optic output uses standard 2 2 mm jacketed plastic fiber The fiber should be cut to length with a sharp razor...

Страница 21: ...dicator illuminates but the fan does not turn on Solution Cease operation and contact Eagle Harbor Technologies immediately Operation of the unit without the cooling fan may result in catastrophic sys...

Страница 22: ...tage trace then the voltage is not high enough to break down the DBD Arc at the current settings Increase the supply output voltage 8 2 Internal Mode Problem The rear panel AC Switch is in the On I po...

Страница 23: ...is is the minimum pulse width achievable by the unit and internal protections have limited the output pulse to the value measured Problem The rear panel AC Switch in the On I position and the front pa...

Страница 24: ...s This includes the trigger level of the scope which should be set to a level low enough such that the oscilloscope is triggered by the shot In estimating this level take into account the voltage divi...

Страница 25: ...his mode every 0 5 seconds but was not detected when set to Single Pulse contact Eagle Harbor Technologies 11 If no output pulse is detected turn the HV Output Switch to Off then turn the rear panel A...

Страница 26: ...DP0100 High Voltage Differential Probe or Tektronix P6015A High Voltage Probe Oscilloscope traces showing typical output waveforms of the NSP are shown below 9 1 Internal Voltage Divider Waveforms In...

Страница 27: ...Divider Waveforms The user can measure the full voltage output using a capacitive voltage divider The waveform below shows that measuring the output voltage with a capacitive voltage divider with a sm...

Страница 28: ...t monitor The DBD had a capacitance of 8 pF The current profile green shows the current flowing into the DBD as the capacitance is charged The voltage stays constant and the current near zero until th...

Страница 29: ...rent is constant for the duration of the pulse Figure 17 Load voltage yellow and current green for an arc and a 1 pF voltage divider 9 5 NSP 120 30 N 500 Output Waveforms Waveforms specific to this un...

Страница 30: ...nt purple for minimum left and maximum pulse widths across a 10 pF 1 9 capacitive voltage divider Figure 21 Maximum pulse width on a shorted output demonstrating the maximum dI dt and current for the...

Страница 31: ...ltage and with 6 output cables unless otherwise specified This unit has recently undergone a redesign and these waveforms are no longer accurate Figure 22 Minimum left and maximum pulse width voltage...

Страница 32: ...169 Western Ave W Seattle WA 98119 www eagleharbortech com Page 32 of 32 Figure 25 Maximum pulse width on a shorted output demonstrating the maximum dI dt and current for the unit 1 2 A ns up to a fla...

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