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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

Содержание HVA4321

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

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Страница 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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Страница 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...

Страница 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...

Страница 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...

Страница 8: ...HVA4321 iv...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 16: ...Figures HVA4321 xii...

Страница 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...

Страница 18: ...HVA4321 1 2...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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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Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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Страница 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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Страница 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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Страница 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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Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 116: ......

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 128: ......

Страница 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...

Страница 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...

Страница 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...

Страница 132: ......

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 138: ......

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 148: ......

Страница 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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Страница 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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