Megaimpulse Ltd. NPG-15/2000 User Manual Download Page 9

 

Step 4. 

Connect  the  other  side  of  coaxial  cable  to  the  load.  The  cone  teflon  insulator  is 
used at the cable end to prevent the discharge between central cable wire and the 
cable  braid  (See  Fig.2).  You  may  use  additional  wires  for  connection:  solder  the 
high voltage  signal  wire  to the central cable  wire and  screw/solder ground signal 
wire  to  the  ground  clamp.  It  is  recommended  to  use  as  short  additional  wires  as 
possible.  More  than  10  cm  wires  result  is  excessive  stray  inductance  and 
significant reducing of the pulse voltage on the load.  
 

 

 
Fig.2. The cone teflon insulator at the cable end. 
 
The length of coaxial cable is about 3 meters. Shorter cable may result in damage 
of the generator in case of operation on short or open load. 
 

Step 4. 

Toggle HV ON/HV OFF switch to HV OFF state.  
Toggle EXT/INT switch to INT state.  
Place  both  "amplitude"  and  "frequency"  knobs  to  the  most  counterclockwise 
position, which corresponds to minimum amplitude and frequency.  
Connect power supply cable to power outlet.  
Switch on the generator by power switch at the rear panel. The internal fans of the 
generator should start to rotate. 

NPG-15/2000 nanosecond pulse generator user manual                                      7

 

Summary of Contents for NPG-15/2000

Page 1: ...NANOSECOND PULSE GENERATOR NPG 15 2000 N USER MANUAL 2013 Megaimpulse Ltd...

Page 2: ...ROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATION ONLY AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE AND SH...

Page 3: ...manual 3 Technical specification 4 Front and rear panels view 5 Putting the generator into operation 6 Overheat mode 9 Triggering of the generator 9 Recommended optical transmitters for external trig...

Page 4: ...he following items NPG 15 2000 N nanosecond pulse generator hereinafter generator Power supply cable High voltage output coaxial cable Two optical cables User manual Fig 1 General view of NPG 15 2000...

Page 5: ...witch is switched off and power supply cable is unplugged before the output cable is connected or disconnected Please connect or disconnect any equipment toggle generator from internal to external tri...

Page 6: ...or Pulse polarity positive NPG 15 2000 negative NPG 15 2000N Pulse rise time 0 1 0 9 Umax 4 ns Max pulse energy 30 mJ Peak pulse power 4 5 MW Repetition rate up to 3 2 kHz Triggering internal or exter...

Page 7: ...nnector and fuse holder 4 HV ON HV OFF high voltage on off switch 5 EXT INT external internal triggering switch 6 optical SYNC OUT connector 7 overheat LED 8 AMPLITUDE regulation knob 9 FREQUENCY regu...

Page 8: ...ors is very important for normal operation of the generator Even small air gap between the connectors may result in arcing destroying of the generator and the cable To obtain good and tight contact th...

Page 9: ...and significant reducing of the pulse voltage on the load Fig 2 The cone teflon insulator at the cable end The length of coaxial cable is about 3 meters Shorter cable may result in damage of the gener...

Page 10: ...reases slightly while you rotate AMPLITUDE knob from the most counterclockwise position to the middle position and then increases faster while you rotate the knob to the most clockwise position Step 6...

Page 11: ...energy reflected from the load check the amplitude of the secondary and following pulses by oscilloscope with high voltage probe connected to the load You should use 500 MHz or more bandwidth oscillo...

Page 12: ...ITORING NPG 15 2000 N is equipped by optical connector for external triggering and output pulse monitoring AVAGO HFBR 1522Z and HFBR 2522Z transmitters as well as AVAGO HFBR 4501 HFBR 4511 connectors...

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