background image

 

 
PUTTING THE GENERATOR INTO OPERATION  

 

 

  

Please follow strictly the described steps. It helps to prevent damage of the 
generator, other equipment, and personnel injury. 

  

Step 1. 

Unpack  the  generator  and  check  the  presence  into  the  package  of  all  the  above 
mentioned items.  
 

Step 2. 

Set up the generator. Ground it obligatory by connecting ground cable to terminal 
on  the  rear  panel  (

11

)  or  use  three  terminal  power  supply  outlet  with  grounding 

contact. 
 

Step 3. 

Check the output coaxial female connector on the front panel of the generator and 
co-pair male connectors of the HV cable assemblies. All the connectors should be 
clean,  free  from  dust,  dirt  and  any  obstacles.  Clean  the  connectors  by  alcohol 
and/or cotton bud if necessary. After cleaning, please apply a drop of pure silicon 
oil before mating the connectors. Oil fills air gap between insulators of the co-pair 
connectors and eliminates possible arcing. 
Choose  the  cable  assembly  which  you  want  to  operate  with,  depending  on  the 
required output pulse amplitude. Output module without the divider allows to get 
3kV...10kV  pulse  amplitude  on  high  impedance  load;  output  module  with  1:3 
divider gives three times less amplitude. You can connect also cable assembly with 
N-type connector together with your own sample holder or HV attenuator.  
Attach the cable connector to the generator front panel connector (

2

). The tight and 

firm  contact  of  the  connectors  is  very  important  for  normal  operation  of  the 
generator. Even small air gap between the connectors may result in arcing, destroy 
the generator and/or the cable.  
To obtain good and tight contact the following procedure is recommended: 

1.

 

Align both connectors. 

2.

 

Hold  the  generator  by  one  hand  to  prevent  moving  and  press  the  cable 

connector by other hand toward the generator connector. 

3.

 

Screw the cable connector nut by hand, usually one or two turns. Do not 

rotate the cable connector body. 

4.

 

Press the cable connector toward the generator connector again. 

5.

 

Again screw the cable connector nut one or two turns. 

6.

 

Repeat steps 4 and 5 up to tight contact.  

MEGAIMPULSE LTD.                                                                                                8

 

Summary of Contents for NRG1001

Page 1: ...NANOSECOND HIGH VOLTAGE RECTANGULAR WAVEFORM PULSE GENERATOR NRG1001 USER MANUAL v 0 1 2018 Megaimpulse Ltd...

Page 2: ...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 SHOULD NOT BE CO...

Page 3: ...generator 3 Technical specification 5 Front and rear panels view 6 Package content 7 Putting the generator into operation 8 Triggering of the generator 11 SYNC OUT pulse 12 Fuse replacement 13 Warrant...

Page 4: ...system ensure that the power supply ON OFF toggle is switched off and power supply cable is unplugged before the output cable is connected or disconnected Please connect or disconnect any equipment w...

Page 5: ...s higher in most of practical applications which gives up to double output pulse voltage on the load There are internal and external triggering operation modes which can be chosen by EXT INT toggle sw...

Page 6: ...2 General view of NRG1001 nanosecond high voltage rectangular like waveform pulse generator Fig 3 Output modules with integrated 1 40 resistive coupler and with or without 1 3 divider MEGAIMPULSE LTD...

Page 7: ...1 5 kV 5 0 kV on 50 Ohm matched load Output pulse width 10 ns fixed FWHM Output pulse rise fall times 2 2 ns 4 5 ns 2 5 ns 5 0 ns depending on the pulse amplitude and load impedance Repetition rates f...

Page 8: ...nnector 3 power supply connector and fuse holder 4 HV ON HV OFF high voltage on off switch 5 EXT INT external internal triggering toggle switch 6 BNC SYNC IN connector 7 AMPLITUDE regulation knob 8 FR...

Page 9: ...assembly 2 consisting of RG214 U cable special HV coaxial connector output module with integrated 1 3 divider and 1 40 resistive coupler Semirigid coaxial cable assembly with SMA connectors Two 20dB...

Page 10: ...ou want to operate with depending on the required output pulse amplitude Output module without the divider allows to get 3kV 10kV pulse amplitude on high impedance load output module with 1 3 divider...

Page 11: ...module SMA connector attach two 20dB attenuators and if required SMA to BNC adapter for the connection to oscilloscope see Fig 4 1 40 coupler together with two 20dB attenuators gives 4000 total divis...

Page 12: ...m frequency about 1 Hz Connect power supply cable to wall power outlet Switch on the generator by power switch on the rear panel The internal fan should start to rotate Step 7 Switch on the high volta...

Page 13: ...mp in HV ON HV OFF switch lights on The maximum allowable pulse repetition rate in this mode is limited by FREQUENCY regulation knob at the front panel of the generator Therefore internal generator fr...

Page 14: ...h impedance load The SYNC OUT pulse precedes output HV pulse by about 300 ns The oscillograms of SYNC OUT pulse Channel 1 yellow line and output HV pulse Channel 4 magenta line are shown in Fig 5 Fig...

Page 15: ...nnector Please use flat screwdriver or other suitable tool to remove the fuse holder see Fig 6 Fig 6 Removing of the fuse holder by flat screwdriver There are two fuses in the fuse holder including on...

Page 16: ...ent to determine the warranty period and condition The generator has warranty seals on the front and rear panels see Fig 8 Removing of the seals terminates the warranty Fig 8 Warranty seals on the fro...

Reviews: