NF HVA4321 Instruction Manual Download Page 140

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8.2 Amplifier

HVA4321

8-2

8.2 Amplifier

8.2.1

Characteristics of constant voltage mode

Amplifier gain

1000 V/1 V (60 dB)

Gain accuracy when external signal source for DC bias is used

0.3 % of full scale

Gain temperature drift

100 ppm/ typ

Rated load

Resistance load

1000 k

Capacity load

35 pF (including output cable capacity)

Maximum output voltage

10 kVpk (for DC+AC)

Maximum output current

Average current

10 mA (for DC+AC)

Pulse peak current

60 mA or more

Figure8-1. Output current

直流

10mA

平均電流

10mA

パルスピーク電流

60mA

平均電流

10mA

DC 10mA

Average current
10mA

Pulse peak current 60 mA

Average current
10 mA

Summary of Contents for HVA4321

Page 1: ...INSTRUCTION MANUAL NF Corporation HVA4321 10kV AC DC AMPLIFIER HVA4321 10kV AC DC AMPLIFIER...

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Page 3: ...on Manual DA00012063 001 This unit generates high voltage Incorrect operation may result in death or injury To prevent death or injury please read this manual carefully Keep this manual near the unit...

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Page 5: ...nt during handling This manual has the following chapter organization If reading this manual for the first time start from Chapter 1 1 OVERVIEW Describes various items that must be checked prior to us...

Page 6: ...ct is automatically grounded To use 3 pin 2 pin conversion adapter be sure to connect the ground line green of the conversion adapter to the ground terminal near the outlet If the ground terminal is a...

Page 7: ...tions that present a risk of electric shock under specific conditions Protective terminal grounding symbol This symbol indicates terminals that require grounding to prevent electric shock Before opera...

Page 8: ...HVA4321 iv...

Page 9: ...Output 3 9 3 3 Monitor and control signal system 3 11 3 3 1 Monitor 3 11 3 3 2 Control signal system 3 12 3 4 Power supply items 3 17 3 5 Panel drawing 3 18 3 5 1 Front panel 3 18 3 5 2 Rear panel 3 1...

Page 10: ...4 6 2 Panel setting for use of remote control 4 58 5 Representative characteristics 5 1 Measuring method 5 1 5 2 Characteristics in constant voltage mode 5 3 5 2 1 Frequency characteristics 5 3 5 2 2...

Page 11: ...2 Amplifier 8 2 8 2 1 Characteristics of constant voltage mode 8 2 8 2 2 Characteristics of constant current mode 8 4 8 3 Output area 8 5 8 4 Monitor output 8 5 8 5 Other input output signal 8 6 8 6 P...

Page 12: ...mode 3 8 Figure3 12 Output area 3 9 Figure3 13 Power supply and internal high voltage DC power 3 9 Figure3 14 Return terminal 3 10 Figure3 15 Monitor output 3 11 Figure3 16 Status signal output 3 11...

Page 13: ...power ON 4 23 Figure4 31 Using internal DC bias signal 4 24 Figure4 32 Using external oscillator 4 25 Figure4 33 Using external DC bias signal 4 25 Figure4 34 Load mode 4 28 Figure4 35 Internal high...

Page 14: ...ut current 5 2 Figure5 4 Frequency characteristics in constant voltage mode without load 5 3 Figure5 5 Frequency characteristics in constant voltage mode with capacity load 5 3 Figure5 6 Step response...

Page 15: ...age Table2 1 Accessories 2 3 Table3 1 Logic of HIGH VOLTAGE POWER SUPPLY ON OFF 3 3 Table3 2 Logic of signal system ON OFF signal 3 3 Table3 3 Logic of SIGNAL ON OFF signal 3 3 Table3 4 Status contact...

Page 16: ...Figures HVA4321 xii...

Page 17: ...1 Overview 1 1 Features 1 1 1 2 Function description and block diagram 1 3 1 2 1 Function description 1 3 1 2 2 Block diagram 1 4...

Page 18: ...HVA4321 1 2...

Page 19: ...ternal signal source for two systems Excellent characteristics with large amplitude In constant voltage mode 10 kVpk output up to 7 kHz is available In constant current mode 10 kVpk output up to 4 kHz...

Page 20: ...high voltage output During high voltage output the LED around the output connector lights and the revolution changes depending on the output voltage level Remote control is capable Signals can be tur...

Page 21: ...ce EXT DC BIAS INPUT These signals can be used simultaneously Signal is internally added and the input is given to the amplifier stage Amplifier stage Input signals are separated into positive and neg...

Page 22: ...ensor Optical fiber DC detection circuit Driver Voltage detection circuit External control circuit Control signal for remote control Power supply Power supply Power supply Power supply Line filter Con...

Page 23: ...2 Preparations before use 2 1 Before using the HVA4321 2 1 2 2 Installation 2 2 2 3 Grounding and power supply connection 2 3...

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Page 25: ...n the panel surface knob or connector Check of accessories Accessories of this product are as shown below Make sure that the quantity is sufficient or that there is no faulty part Table2 1 Accessories...

Page 26: ...ive particles Failure such corrosion or deteriorated insulation may occur Place where there is flammable gas Explosion may occur Place where an object may fall Failure may occur Outdoor or place where...

Page 27: ...Power consumption 800VA or less a Check items before connection of the power cable Make sure that the power switch on the front panel is OFF Figure2 1 Check of power OFF Make sure that the HIGH VOLTAG...

Page 28: ...0 Insert the power cable plug into the power outlet with the protective ground Use the accompanying power cable and insert it into the power outlet with the ground The casing of the unit is then groun...

Page 29: ...e sure to ground this unit for safety Otherwise a serious accident such as electric shock may occur The standard power cable accompanied has rated voltage of AC125V and rated current of 10A When a pow...

Page 30: ...2 3 Grounding and power supply connection HVA4321 2 6...

Page 31: ...nal signal input 3 2 3 1 4 Input signal ON OFF 3 2 3 2 Amplifier 3 4 3 2 1 Amplifier operation mode 3 4 3 2 2 Amplifier control 3 6 3 2 3 Output 3 9 3 3 Monitor and control signal system 3 11 3 3 1 Mo...

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Page 33: ...lockwise the dial is locked Polarity of the internal DC bias signal source is set With the output is positive and with the output is negative ON OFF It is the ON OFF switch for the internal DC bias si...

Page 34: ...ame as the output signal polarity In INVERT the input signal polarity is reverse to the output signal polarity Figure3 3 External signal input ON OFF Valid or invalid signal in OSC INPUT is set When i...

Page 35: ...hanged When remote local settings are changed In SIGNAL OFF the OFF LED lights For the following cases the OFF LED blinks The HIGH VOLTAGE POWER SUPPLY switch is OFF When the internal high voltage DC...

Page 36: ...onstant voltage mode The AC signal is constant current mode CC Both the DC signal and the AC signal are constant current mode For example if a capacity load is connected in constant current mode the c...

Page 37: ...pe and value For resistance load For 250 k Approx 5 mHz or more For 1 M Approx 0 2 Hz or more For capacity load For 16 pF Approx 100 Hz or more For 100 pF Approx 50 Hz or more For 1000 pF Approx 5 Hz...

Page 38: ...ge mode the voltage of the internal high voltage DC power supply is limited and the amplitude of the input signal is limited to limit the output voltage Use the unit paying attention to the following...

Page 39: ...AC the average current for positive side is 3 mA and the average current for negative side is 3 mA Figure3 9 Operation of current limiter Use this current limiter paying attention to the following Th...

Page 40: ...SPONSE CC In constant current mode the step response waveform such as square wave is adjusted As the dial is turned toward the right the response approaches the peak Make adjustment for the desired re...

Page 41: ...uch load or the output cable with the internal high voltage DC power supply ON Otherwise electric shock may occur When the power is supplied the internal high voltage DC power supply is always OFF reg...

Page 42: ...the voltage is the faster the rotation speed is OUTPUT Lo TOTAL CURRENT It is the return terminal of the high voltage output used in constant voltage mode or constant current total mode OUTPUT Lo LOA...

Page 43: ...is monitored Gain 1V 10 mA Output impedance 50 10 Figure3 15 Monitor output SIGNAL ON OFF STSTUS It is the total level signal output that indicates SIGNAL ON OFF status When the signal is ON the leve...

Page 44: ...N OFF External oscillator signal ON OFF INT DC BIAS ON OFF Internal DC bias signal ON OFF EXT DC BIAS ON OFF External DC bias signal ON OFF Figure3 17 Remote local settings Change REMOTE LOCAL when th...

Page 45: ...h voltage DC power supply is ON Table3 1 Logic of HIGH VOLTAGE POWER SUPPLY ON OFF HIGH VOLTAGE POWER SUPPLY ON OFF signal in remote control operation Front panel switch OFF ON TTL High Approx 5 V Low...

Page 46: ...stem in remote control operation TTL High Approx 5V Low Approx 0V Back panel control signal Contact Open Close Signal status OFF ON O FF ON L ow H igh L ow H igh H igh H IG H V O LTAG E O N O FF ON O...

Page 47: ...e3 3 Logic of SIGNAL ON OFF signal SIGNAL ON OFF signal in remote control operation TTL High Positive logic Low Positive logic Back panel control signal Contact Open Close Signal status OFF ON R EM O...

Page 48: ...onnected to any line It can used as a relay terminal 3 COM Common terminal for contact output 4 NC When SIGNAL is OFF it is connected to the COM terminal 5 NO When SIGNAL is ON it is connected to the...

Page 49: ...sing If grounding is not available with a power cable ground this terminal with a wire of 2 mm2 or more Be sure to ground this unit for safety Otherwise a serious accident such as electric shock may o...

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Page 51: ...external DC bias is used 3 1 2 EXT DC BIAS INPUT BNC connector to give external DC bias input 3 1 2 SIGNAL ON OFF STATUS OUTPUT Gives signal that indicates SIGNAL ON OFF status 3 3 2 MONITOR VOLTAGE...

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Page 53: ...nternal DC bias signal for remote control operation 3 3 2 FUSE HOLDER Fuse holder This unit uses a AC250V 10A fuse 3 4 LINE Inlet to connect the power cable Be sure to connect the accompanying 3 pin p...

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Page 55: ...26 4 3 Operation example in constant current mode load 4 27 4 3 1 Panel setting 4 29 4 3 2 Connection of signal source and connection of load 4 32 4 3 3 Power supply and internal high voltage DC power...

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Page 57: ...urrent detection resistance and AC is detected with current transformer CT Total output of leak current lstr with wire capacity and load current lload is given to the current monitor Leak current lint...

Page 58: ...mode of constant voltage mode Advantage Only load current can be monitored Disadvantage One end of load cannot be directly grounded There is a current detection resistance 33 between load end and grou...

Page 59: ...internal high voltage DC power supply is always OFF Figure4 3 Internal high voltage DC power OFF b Signal system OFF Turn the internal DC bias knob to the leftmost position to minimize the value Turn...

Page 60: ...his unit from the panel set the ON OFF CONTROL switch to LOCAL Refer to 4 6 Remote control operation for remote control operation Figure4 6 Local settings OVERLOAD CV 1kV 1V CC 1m A 1V DC B I AS CV CC...

Page 61: ...age value of the output current in the range from 0 mA to 10 mA For example to limit the output current up to 5 mA set it to 5 mA When current limitation is not required set it to 10 mA which is turne...

Page 62: ...signal generator e g oscillator output to OSC INPUT When applying the external DC bias give the DC signal source output to EXT DC BIAS INPUT The input voltage of the OSC INPUT terminal and the EXT DC...

Page 63: ...ct from stray capacitance shorten the cable length as much as possible and keep it away from the floor or other devices Connect the output return wire to TOTAL CURRENT terminal in total mode Connect i...

Page 64: ...If it is different current cannot be monitored The TOTAL CURRENT terminal is connected to the casing Tighten the binding post terminal of OUTPUT Lo securely If it is loose electric shock may occur wh...

Page 65: ...OFF lamp of the signal switch blinks The OFF LED of the internal high voltage DC power supply lights Figure4 13 Power supply b Supply of high voltage DC power Turn the HIGH VOLTAGE POWER SUPPLY switc...

Page 66: ...he shorting plug for operation in LOCAL mode 2 Is the DC CURRENT value the minimum and is TRIP selected Action Increase the current limit or select LIMIT 3 Is temperature of exhaust air extremely high...

Page 67: ...Figure4 15 Using internal DC bias signal b Using external oscillator Connect the external oscillator to OSC INPUT and make sure that the oscillator output level is 0V Set the GAIN knob to TOP Turn ON...

Page 68: ...150V the high voltage output LED lights and starts rotation slowly The higher the output voltage is the faster the rotation is When the voltage exceeds 4 9 kV the color changes from orange to red Gai...

Page 69: ...he output signal to 0V temporarily press OFF of the SIGNAL switch When SIGNAL is OFF the output voltage is 0V but the internal high voltage DC power supply is ON It continuously gives high voltage out...

Page 70: ...for DC signal The TOTAL terminal of OUTPUT Lo is connected to the casing ground Therefore the total mode can be used for grounded load or load that can be grounded When the internal high voltage DC po...

Page 71: ...lout lload lstr In total mode from output current lout DC is detected with current detection resistance and AC is detected with current transformer CT Total output of leak current lstr with wire capa...

Page 72: ...internal high voltage DC power supply is always OFF Figure4 19 Internal high voltage DC power OFF b Signal system OFF Turn the internal DC bias knob to the leftmost position to minimize the value Turn...

Page 73: ...the panel set the ON OFF CONTROL switch to LOCAL Refer to 4 6 Remote control operation for remote control operation Figure4 22 Local settings OVER LOAD CV 1kV 1V CC 1m A 1V DC B I AS CV CC CV 1kV 1V...

Page 74: ...it the average value of the output current in the range from 0 mA to 10 mA For example to limit the output current up to 5 mA set it to 5 mA When current limitation is not required set it to 10 mA whi...

Page 75: ...Give the signal generator e g oscillator output to OSC INPUT When applying the external DC bias give the DC signal source output to EXT DC BIAS INPUT The input voltage of the OSC INPUT terminal and t...

Page 76: ...nnected to Hi To minimize effect from stray capacitance shorten the cable length as much as possible and keep it away from the floor or other devices Connect the return wire to the TOTAL CURRENT termi...

Page 77: ...ENT terminal is used the operation may be faulty The TOTAL CURRENT terminal is connected to the casing Tighten the binding post terminal of OUTPUT Lo securely If it is loose electric shock may occur w...

Page 78: ...The OFF lamp of the signal switch blinks The OFF LED of the internal high voltage DC power supply lights Figure4 29 Power supply b Supply of high voltage DC power Turn the HIGH VOLTAGE POWER SUPPLY sw...

Page 79: ...t the shorting plug for operation in LOCAL mode 2 Is the DC CURRENT value the minimum and is TRIP selected Action Increase the current limit or select LIMIT 3 Is temperature of exhaust air extremely h...

Page 80: ...ge Figure4 31 Using internal DC bias signal b Using external oscillator Connect the external oscillator to OSC INPUT and make sure that the oscillator output level is 0V Set the GAIN knob to TOP Turn...

Page 81: ...o 150V the high voltage output LED lights and starts rotation slowly The higher the output voltage is the faster the rotation is When the voltage exceeds 4 9 kV the color changes from orange to red Ga...

Page 82: ...t the output signal to 0V temporarily press OFF of the SIGNAL switch When SIGNAL is OFF the output voltage is 0V but the internal high voltage DC power supply is ON It continuously gives high voltage...

Page 83: ...d from different routes Therefore load mode cannot be used for load which is grounded When the internal high voltage DC power supply is ON and SIGNAL is ON with the output open maximum 12 kV output is...

Page 84: ...tr In load mode lload and lstr are returned through different routes and only lload is detected to control output current Therefore Set current lload lout lload lstr Current lout from the output termi...

Page 85: ...internal high voltage DC power supply is always OFF Figure4 35 Internal high voltage DC power OFF b Signal system OFF Turn the internal DC bias knob to the leftmost position to minimize the value Turn...

Page 86: ...he panel set the ON OFF CONTROL switch to LOCAL Refer to 4 6 Remote control operation for remote control operation Figure4 38 Local settings OVER LOAD CV 1kV 1V CC 1m A 1V DC B I AS CV CC CV 1kV 1V CC...

Page 87: ...mit the average value of the output current in the range from 0 mA to 10 mA For example to limit the output current up to 5 mA set it to 5 mA When current limitation is not required set it to 10 mA wh...

Page 88: ...Give the signal generator e g oscillator output to OSC INPUT When applying the external DC bias give the DC signal source output to EXT DC BIAS INPUT The input voltage of the OSC INPUT terminal and th...

Page 89: ...e length as much as possible and keep it away from the floor or other devices Connect the return wire from load to the LOAD CURRENT terminal Connect the ground line where leak current runs with stray...

Page 90: ...n terminal of load current Use the TOTAL CURRENT terminal for the return terminal of leak current Tighten the binding post terminal of OUTPUT Lo securely If it is loose electric shock may occur when t...

Page 91: ...The OFF lamp of the signal switch blinks The OFF LED of the internal high voltage DC power supply lights Figure4 45 Power supply b Supply of high voltage DC power Turn the HIGH VOLTAGE POWER SUPPLY sw...

Page 92: ...the shorting plug for operation in LOCAL mode 2 Is the DC CURRENT value the minimum and is TRIP selected Action Increase the current limit or select LIMIT 3 Is temperature of exhaust air extremely hi...

Page 93: ...ge Figure4 47 Using internal DC bias signal b Using external oscillator Connect the external oscillator to OSC INPUT and make sure that the oscillator output level is 0V Set the GAIN knob to UP Turn O...

Page 94: ...eeds 130V to 150V the high voltage output LED lights and starts rotation slowly The higher the output voltage is the faster the rotation is When the voltage exceeds 4 9 kV the color changes from orang...

Page 95: ...t the output signal to 0V temporarily press OFF of the SIGNAL switch When SIGNAL is OFF the output voltage is 0V but the internal high voltage DC power supply is ON It continuously gives high voltage...

Page 96: ...tant current operation varies depending on the load capacity Refer to 3 2 1 Amplifier operation mode Chapter 3 and Figure5 4 and Figure5 12 5 4 Chapter 5 The TOTAL terminal of OUTPUT Lo is connected t...

Page 97: ...l mode and load mode can be used same as normal constant current mode OU TPU T H i OU TPU T L o TO TA L LOAD Iou t Iin t Is tr Il oad Iam p Iac Idc CT Output terminal Load resistance Wire capacity Cur...

Page 98: ...atus The internal high voltage DC power supply is always OFF Figure4 52 Internal high voltage DC power OFF b Signal system OFF Turn the internal DC bias knob to the leftmost position to minimize the v...

Page 99: ...from the panel set the ON OFF CONTROL switch to LOCAL Refer to 4 6 Remote control operation for remote control operation Figure4 55 Local settings OVER LOAD CV 1kV 1V CC 1m A 1V DC B I AS CV CC CV 1k...

Page 100: ...it the average value of the output current in the range from 0 mA to 10 mA For example to limit the output current up to 5 mA set it to 5 mA When current limitation is not required set it to 10 mA whi...

Page 101: ...d a Connection of input signal source Give the signal generator e g oscillator output which is the signal source of constant current to OSC INPUT When applying the external constant voltage signal sou...

Page 102: ...n the internal bias signal source or EXT DC BIAS INPUT can be used as the constant voltage signal source If a DC input is given into OSC INPUT the DC component is cancelled in this unit and the output...

Page 103: ...rn wire to TOTAL CURRENT terminal and LOAD CURRENT terminal according to the total load mode settings Figure4 61 Connection of output cable Tighten the binding post terminal of OUTPUT Lo securely If i...

Page 104: ...rface The OFF lamp of the signal switch blinks The OFF LED of the internal high voltage DC power supply lights Figure4 62 Power supply b Supply of high voltage DC power Turn the HIGH VOLTAGE POWER SUP...

Page 105: ...Insert the shorting plug for operation in LOCAL mode 2 Is the DC CURRENT value the minimum and is TRIP selected Action Increase the current limit or select LIMIT 3 Is temperature of exhaust air extrem...

Page 106: ...voltage Figure4 64 Using internal DC bias signal b Using external oscillator Connect the external oscillator to OSC INPUT and make sure that the oscillator output level is 0V Set the GAIN knob to UP...

Page 107: ...V to 150V the high voltage output LED lights and starts rotation slowly The higher the output voltage is the faster the rotation is When the voltage exceeds 4 9 kV the color changes from orange to red...

Page 108: ...To set the output signal to 0V temporarily press OFF of the SIGNAL switch When SIGNAL is OFF the output voltage is 0V but the internal high voltage DC power supply is ON It continuously gives high vo...

Page 109: ...wer supply continuously gives high voltage output In this status never touch the output cable or the high voltage area for safety to change load b Internal high voltage DC power supply OFF Press the H...

Page 110: ...s above turn OFF the POWER Figure4 70 POWER OFF POW ER DC B I AS 0 10 V I O Turn OFF H I GH VO LTAGE POW ER SUPPLY PUSH O FF ON O FF DANGER OUTPUT H i PU LL ON 10kV M AX 10m A M AX LED OFF LED MON I T...

Page 111: ...area load high voltage cable etc d Change of load 30 seconds or more after turning OFF the POWER change the load During change of the load remove the high voltage cable connector from the OUTPUT Hi te...

Page 112: ...the power OFF is the same as 4 5 1 Change of load Do not turn OFF the POWER switch with HIGH VOLTAGE POWER SUPPLY ON Approximately 200V output may be generated Be sure to turn OFF HIGH VOLTAGE POWER...

Page 113: ...FF Signal input ON OFF to amplifier OSC INPUT ON OFF Signal ON OFF to external oscillator INT DC BIAS ON OFF Internal DC bias signal ON OFF EXT DC BIAS ON OFF External DC bias signal ON OFF TTL level...

Page 114: ...trol switch 4 6 3 Connection of control signal Connect the control signal to the BNC connector at the back TTL level logic signal and contact signal can be used as control signal OFF Hi TTL level Posi...

Page 115: ...rrent mode 5 5 5 3 1 Frequency characteristics 5 5 5 3 2 Step response 5 6 5 4 Characteristics in constant current and constant voltage mode 5 7 5 4 1 Frequency characteristics 5 7 5 5 Characteristics...

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Page 117: ...of frequency characteristics for output voltage and voltage monitor is as shown in the figure below Connect load as required Take measurements with the load cable length of approx 15 cm for resistance...

Page 118: ...ce load and with the load cable length of approx 5 cm for capacity load Figure5 3 Measuring method of output current Representative characteristics are shown on the following pages However these do no...

Page 119: ...voltage in constant voltage mode without load Figure5 4 Frequency characteristics in constant voltage mode without load Frequency characteristics of output voltage in constant voltage mode with 35 pF...

Page 120: ...voltage mode without load Step response in constant voltage mode with 35 pF capacity load Measure the voltage monitor Horizontal axis 25 div Vertical axis 100 V div left 5 kV div right Figure5 7 Step...

Page 121: ...t circuit and resistance load Figure5 8 Frequency characteristics in constant current TOTAL mode Frequency characteristics of output current for input voltage in constant current LOAD mode with short...

Page 122: ...Step response Step response in constant current TOTAL mode with 1 M resistance load Measure the current monitor Horizontal axis 250 div Vertical axis 200 mV div Figure5 10 Step response in constant c...

Page 123: ...of output current for input voltage in constant current TOTAL constant voltage mode with capacity load Figure5 11 Frequency characteristics in constant current TOTAL constant voltage mode Frequency c...

Page 124: ...current monitor 5 5 1 Frequency characteristics Frequency characteristics of voltage monitor 10 kVpk output without load Figure5 13 Frequency characteristics of voltage monitor Frequency characterist...

Page 125: ...pF capacity load Horizontal axis 2 div Vertical axis Input voltage 5 V div Output voltage 2 kV div Voltage monitor 2 V div Output current 500 div Current monitor 50 mV div Figure5 15 Delay of input ou...

Page 126: ...o difference of amplitude Constant voltage mode without load Measure the voltage monitor Horizontal axis 5 div Vertical axis 2 V div Figure5 16 Step response in constant voltage mode The rising time u...

Page 127: ...6 Troubleshooting 6 1 When suspecting a fault 6 1...

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Page 129: ...horting plug Is the current limiter set to the minimum or TRIP Increase the limiter set value or change TRIP to LIMIT When the installation space for this unit has high temperature or when the unit is...

Page 130: ...he load to the LOAD terminal correctly Unexpected high voltage output is given in constant current mode or LOAD mode Is the load grounded Do not ground the load When the output is short circuited in c...

Page 131: ...enance 7 1 Daily maintenance 7 1 7 2 Inspection 7 2 7 3 When the unit is not used for a long time 7 2 7 4 Performance test 7 3 7 4 1 Test of constant voltage mode 7 3 7 4 2 Test of constant current mo...

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Page 133: ...ner and benzene or a chemical wipe may cause deterioration or peel of paint Never use it The intake cooling fan the fan in the left when viewed from the back at the back of the unit is provided with a...

Page 134: ...use the accompanying high voltage cable for connection to the output terminal Front area Make sure that the HIGH VOLTAGE POWER SUPPLY switch can be locked A cable with broken shield or disconnected wi...

Page 135: ...s given in constant voltage mode are checked Give voltage input from the reference DC power supply to the external DC bias signal input Make sure that the output is 10 kV for 10V input Make sure that...

Page 136: ...ven voltage input from the standard DC power supply to the external DC bias signal input Make sure that the output is 10 mA for 10V input Make sure that the error between the actual output and the val...

Page 137: ...r 8 2 8 2 1 Characteristics of constant voltage mode 8 2 8 2 2 Characteristics of constant current mode 8 4 8 3 Output area 8 6 8 4 Monitor output 8 6 8 5 Other input output signal 8 7 8 6 Protection...

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Page 139: ...otation potentiometer Inversion function Available Signal ON OFF function Available ON OFF with external signal is also available Signal input for oscillator Input voltage range 10 Vpk Input terminal...

Page 140: ...full scale Gain temperature drift 100 ppm typ Rated load Resistance load 1000 k Capacity load 35 pF including output cable capacity Maximum output voltage 10 kVpk for DC AC Maximum output current Ave...

Page 141: ...hout load with 1 kVpk output and with the RESPONSE dial turned rightmost Slew rate 500 V or more Measured with a high voltage probe Model P6015A by Tektronix with 10kVpk output and with the RESPONSE d...

Page 142: ...ated resistance load with load connection cable of 10 cm or less and with the RESPONSE dial turned rightmost Minor amplitude characteristics DC Up to 10 kHz 3 dB short circuit for 10 mApk output Slew...

Page 143: ...t voltage 20 mV Output residual noise 2 mVrms or less Measured with the RMS AC voltmeter M 170 by NF Corporation bandwidth of 20 MHz or its equivalent without load at 0V output Output resistance 50 10...

Page 144: ...VOLTAGE POWER SUPPLY ON OFF Function ON OFF of internal high voltage DC power supply When it is OFF SIGNAL is also OFF Input Depends on TTL level signal or contact signal Lo or short circuit ON Hi or...

Page 145: ...h or with remote control input is OFF the command value for the high voltage amplifier is set to 0V and 0A The output circuit and the output terminal of the high voltage amplifier are not disconnected...

Page 146: ...on position of unit Horizontal 10 or less Cooling method of the unit Forced air cooling Intake from back exhaust from sides Sufficient space is provided at the back and sides of the unit not to distur...

Page 147: ...by dropping of the product or exposure to shocks by the customer during transportation Modification of the product by the customer Failure caused by abnormal voltage from external or failure caused by...

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Page 149: ...rmation contained in this user s manual please notify NF Corporation or an NF Corporation sales representative in case any unclear points errors or omissions are found NF Corporation shall not be held...

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Page 152: ...http www nfcorp co jp NF Corporation 6 3 20 Tsunashima higashi Kohoku ku Yokohama 223 8508 JAPAN HVA4321 10kV AC DC AMPLIFIER...

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