Related Manuals for Megaimpulse NPG18P14
Summary of Contents for Megaimpulse NPG18P14
- Page 1 FOUR-CHANNEL NANOSECOND PULSE GENERATOR NPG18P14 (positive output pulse polarity) NPG18N14 (negative output pulse polarity) USER MANUAL v. 0.1 © 2021 Megaimpulse Ltd.
- Page 2 FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF MEGAIMPULSE LTD. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
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Page 3: Table Of Contents
Front panel in detail ..................10 Putting the generator into operation .............. 12 External triggering ..................14 Electronic fuse ..................... 17 Warranty ...................... 17 Appendix A. List of preset frequencies and number of pulses within a burst ....18 User manual of NPG18P14 (NPG18N14) -
Page 4: Package Content
(hereinafter "generator") Power supply cable High voltage output coaxial cables, 4 pcs. User manual (electronic or printed version) Fig.1. General view of NPG18P14 (positive output pulse polarity) or NPG18N14 (negative output pulse polarity) nanosecond pulse generator. MEGAIMPULSE LTD. -
Page 5: Safety Manual
SAFETY MANUAL Electrical safety NPG18P14 (NPG18N14) pulse generator is high voltage equipment. Please be very careful and operate by qualified personnel only. There is a risk of electric shock, strong electromagnetic interference, damage to the generator or other electronic equipment in case of improper use. -
Page 6: Technical Specification
75 Ohm impedance coaxial cables, Type of the output cables outer diameter 9.6 mm Pulse polarity positive (NPG18P14), negative (NPG18N14) Pulse rise time < 4 ns (fast part of the output pulse) Pulse width (FWHM) 10 ns Pulse energy regulated within 15 mJ ... -
Page 7: Operation Principles
Otherwise, it may lead to permanent damage to the output circuits or HV connectors. Fig.2. The oscillogram of typical output pulse waveform of NPG18P14 positive pulse polarity generator at 99% (maximum) energy level. Zero voltage level is shown by dashed line and marker . - Page 8 100 ms (10 Hz); For the external triggering mode, maximum NUMBER OF PULSES within a one-second interval from 10 to 4000 (in each channel), the default value is 1000; Output PULSE ENERGY from 50% to 99%, the default value is 75%. MEGAIMPULSE LTD.
- Page 9 The maximum number of pulses within 100 ms interval is limited to 400, which corresponds to 4000 pulses in a second in each channel. Therefore, the maximum operation frequency in continuous mode is 4 kHz. Higher repetition rates are available in burst mode only. User manual of NPG18P14 (NPG18N14)
- Page 10 Therefore, it is possible to check the triggering of the generator and output pulses sequence on the SYNC OUT connector without applying HV pulses to the load. Press knob again for returning to the normal operation regime. MEGAIMPULSE LTD.
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Page 11: Front Panel
– Channels ON/OFF push buttons (yellow, blue, red, green) – LED indicators of the active channels – Electronic fuse Four HV output connectors, main power supply connector, and the fans inlets/outlets are located on the rear panel. User manual of NPG18P14 (NPG18N14) -
Page 12: Front Panel In Detail
SYNC OUT connector, which allows testing the triggering and checking the triggering sequence without applying HV pulses to the load. Push the knob again to toggle back into pulse ENERGY mode. MEGAIMPULSE LTD. - Page 13 2 Hz frequency when the channel is active and successfully triggered by the external pulses. Similar control elements are for channels 2, 3, and 4. Main power supply ON/OFF toggle switch. Electronic fuse. User manual of NPG18P14 (NPG18N14)
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Page 14: Putting The Generator Into Operation
Step 1. Unpack the generator and check the presence into the package the following items: NPG18P14 (NPG18N14) nanosecond pulse generator, three-terminal power supply cable with live, neutral, and ground contacts, HV output coaxial cables with 75 Ohm impedance, 4 pcs. - Page 15 Please allow cooling of the generator by fans for several minutes after a long time of operation at high pulse amplitude and frequency. User manual of NPG-10/100k (NPG-10/100kN) User manual of NPG18P14 (NPG18N14)
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Page 16: External Triggering
Fig.5. External triggering mode. Channel 1 (orange line) is the external triggering pulses applied to SYNC IN connector, Channel 2 (green line) is the SYNC OUT pulses. Each triggering pulse results in a single output HV pulse. MEGAIMPULSE LTD. - Page 17 Fig.6. External burst enable mode. The burst of five output pulses (Channel 2, green line) with 10 µs period set by 100 kHz FREQUENCY parameter is formed by a single 45 µs triggering pulse (Channel 1, orange line). User manual of NPG18P14 (NPG18N14)
- Page 18 The zoom view of a triggering pulse and burst of 40 output pulses is shown in the bottom part. Fig.7. The bursts of 40 pulses with 10 µs pulse-to-pulse delay (Channel 2, green line) and 100 Hz burst repetition rate. MEGAIMPULSE LTD.
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Page 19: Electronic Fuse
WARRANTY Please see your sales agreement to determine the warranty period and condition. The generator has warranty seals. Removing the warranty seals and unauthorized opening of the generator enclosure terminates the warranty. User manual of NPG18P14 (NPG18N14) -
Page 20: List Of Preset Frequencies And Number Of Pulses Within A Burst
*) the default value is 10 kHz, which is set after power on the generator **) 4 kHz and more are available in the burst mode only ***) please set 101 kHz internal frequency if you want to operate in external triggering mode with up to 100 kHz repetition rate MEGAIMPULSE LTD. - Page 21 1500 1500 0080 2000 2000 0090 2500 2500 0100 3000 3000 0200 3500 3500 0300 4000 4000 0400 *) the default value is 1000 pulses per second, which is set after power on the generator User manual of NPG18P14 (NPG18N14)
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