HV-AMP400FN-4+400-D_1
Contents
1. 14 BuU cXe 15 17 16 116 19 8 16 1 MS WANN Or u 5 n 21 CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 3 22 HV AMP400FN 4 400 D IN STRUM ENT 5 Figure List Fig 1 The block diagram of the power waveform generator 8 Fig 2 The output connector 15 Fig 3 The front panel of the power waveform generator 19 Fig 4 The rear panel of the power waveform generator 20 Table List Tab 1 Pin layout of the output connector 16 Tab 2 Monitor channel assignment 16 CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Safety Information e The device may be installed and used by authorized and instructed personnel only Read this manual carefully before installing and us ing the device Always follow the safety notes and warnings in this manual e The device is designed for indoor dry laboratory use only Before powering the device on the device temperature m2. Page 1 22 HV AMP400FN 4 400 D INSTRUMENTS Fast High Voltage Power Waveform Generator for Driving Quadrupole Traps Version 1 00 E E E L ar User Manual Document version A created on Jun 26 2014 CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 2 22 HV AMP400FN 4 400 D INSTRUMENTS Contents Safety Intormation sc wencececwessetecessseiawensestadensvaiesmeverasenveess 4 Technical Dal8 uu uuu u uuu u Characteristics UU vi a qud oid aga au aa AA RR a Ea 5 Output PATO TST S u aise Seti toe LLL LLL LLL anasu dus eoete cie ideo IEEE eee 5 Offset ael M E 5 BN grt pr ea E ce u msn nasus 5 KOMIKO ROP I eE E N ss ss sa 6 Human CAC u uu Uu DOES 6 Power SUDDIY A 6 CONOCIO u REEL 7 C ISl u u umanku u Daun asua asmia zayaahupaspayauwsnawakiqaqsusa 7 Shipment Contents a aa 7 DES CHIDUION uu u E E E E 9 Ec RR us 9 OCI S j uuu TT TET T 9 Power amplifier 12 MONON cepere eea 13 Embedded safety precautions 13 Control and Indication Elements
3. The device is supplied by several precise power supply units PSU LV1 2 and PSU HV LV1 2 The power supply units are equipped by current limiters to avoid catastrophic damage in case of any failure Moreover the high voltage supply units providing about 430 V for the amplifiers can be switched on and off The activation of the power supply is user selectable the high voltage supply can be automati cally enabled when there is an active waveform output or can be per manently turned on An opened interlock loop or any overload condi tion always cause a shutdown of the high voltage power supply and disable the waveform generation This measure ensures that in critical situations no lethal voltage can be present at the outputs The amplifiers and the power supplies are linearly operating circuits The power supplies are equipped with toroidal transformers these produce only a weak stray magnetic field The device does not use any power switching circuits such as switching mode power supplies or class D amplifiers Further the digital circuits are enclosed in metal lic boxes that screen the sensitive analog circuits from the disturbing digital signals Thus the emission level of electromagnetic radiation and the conducted digital noise in the output signals are rather low As a result the device should not disturb even sensitive instruments nearby The digital to analog converters used for the waveform generation and for the generation of th
4. Fig 3 Using the rocker switch Power you can power the device on or off When powered on the LED above the power switch lights green and the display LCD turns on For controlling the operation the device is equipped with a graphic liquid crystal display LCD a set of keys keypad and a rotary en coder The keys are arranged in a circle symbolizing the key function There are four direction keys left right up and down and a middle key for confirmation or selection enter The keys are used for menu navigation for selecting dialog items or for changing various values The function of the keypad in every de vice state is symbolized on the LCD immediately above the keypad A text describes the function of the middle key alternatively just the symbol is displayed showing that the middle key can be used similarly arrows show which of the keys has an influence on the op eration in the current state When a menu is active the vertical direc tion keys are used to change the current selection The right direction key as well the middle key opens a submenu provided it is available CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 15 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS The left direction key closes the submenu or the main menu if there was no opened sub
5. continuous signal bandwidth DC 100 Hz 3dB slew rate about 1 V ms security e interlock loop BNC socket short circuit enables the amplifier e overcurrent protection output current limiter e overtemperature protection temperature sensors at the heatsink shutdown temperature programmable e voltage supply voltage supervision CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 6 22 User Manual HV AMP400FN 4 400 D Technical Data INSTRUMENTS Monitoring e monitor outputs four 50 O BNC sockets output impedance 50 O attenuation 1 1000 w o load 1 2000 at load of 50 O signals are inverted with respect to the main outputs accuracy at low frequencies lt 0 2 0 1 typ temperature coefficient of the attenuation at low frequencies lt 50 ppm K 20 ppm K typ signal bandwidth DC 10 MHz 10 DC 100 kHz 1 e LED Power On color green e supply voltages e temperature at the heatsink the chassis plate and the CPU e status indicators over the LCD Power Supply Activated Interlock Fan Failure Amplifier Overheated Human Interface e monochrome LCD display 128x64 pixel pixel size 0 5 mm pixel color yellow background blue background illumination white LED e keypad 5 keys 4x direction 1x enter e rotary encoder 24 positions per revolution integrated press button e op
6. ity is given by the used components digital to analog converters feedback resistors voltage references and the amplifiers itself and is better than 10 ppm K at low frequencies At frequencies in the order of 100 kHz the influence of stray capacitances increases thus the stability become worse The exact values can be precisely determined only by a measurement during the particular experiment The amplifiers HVA400FN have a slew rate of about 250 V us Thus the full voltage transition from O to 400 V during the extraction can be finished within less than 2 us The slew rate also determines the power bandwidth The power bandwidth is the maximum frequency of a sinusoidal signal with the full amplitude that can be produced with out any limitation The amplifiers can typically provide sinusoidal sig nals with the full amplitude of 400 V at frequencies up to more than 100 kHz In the practice the slew rate is determined by the maximum output current of the amplifiers The output current has to recharge the ca pacitance at the output this may affect the slew rate The output ca pacitance is mainly given by the output cable and partially also by the capacitance of the trap electrode Thus to reach optimal performance the length of the output cable should be minimized The output con nector at the rear panel is connected by 45 cm long coaxial cables RG 71 Generally the external output cable should not be substan tially longer than the i
7. loop If the loop is open the amplifier cannot be activated and cannot produce any output signal The indicated interlock state must be short to enable the device operation If the device behaves properly the both power supply units should be off and the indicated amplifier state should be OK In case that the device indicates hot the heatsink has probably got too warm Start the dialog box Temperature Monitor by selecting the menu item Monitor gt Temperature and check the measured temperatures The abovementioned status hot indicates that at least one of the tem perature sensors has encountered a problem Either it measures a too high temperature or it has failed and the device indicates error open or short instead of a temperature value Note that the threshold of the temperature shutdown is adjustable If you have doubts check the current value in the dialog box Temperature Setup Select the menu item Manage Temperature and prove the settings The shutdown threshold should be adjusted to about 50 C substantially lower values may prevent the device from proper operation If you did not encounter any problem proceed with installing the waveform generator as described in the manual of the waveform gen erator Please consult this manual also in case of any discrepancy with this description Should that not resolve the problem contact the distributor or the manufacturer CGC Instruments Tel 49 371 35
8. the trap center and is adjustable in the range of 400 V The trapping can be finished by introducing an extraction phase Dur ing this phase the voltages at the four output channels can be set to independently selectable values The extraction voltages may be again within the 400 V margin relative to the offset voltage i e the resulting output voltage may reach 800 V as during the waveform generation CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com 5 TRUM ENT 5 User Manual HV AMP400FN 4 400 D Description Page 19 22 JOJEJOUSH JOMOd au JO j ued zuo BU 61 4 7110 Eno 100 VrO Oo O TLL 1IndinO 4eb6u 45 19 EnO 100 VrO 388 66 386 3 000 4 4OlluoNW indino 7 kul O O 111 1 48600 BSS AQO8 JalNdwy UdISiddJ pejoJ1u02 15180 internet www cgc instruments com 49 371 355 098 55 Fax 49 371 355 098 60 Tel CGC Instruments info cgc instruments com e mail H bschmannstr 18 D 09112 Chemnitz Page 20 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS 5 lt d E S 5 zu C sm D gu o N s 2 I Fig 4 The rear panel of the power waveform generator CGC Instruments Tel 49 371 3
9. 5 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com
10. 55 098 55 internet www cgc instruments com Hubschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 21 22 User Manual HV AMP400FN 4 400 D Installation INSTRUMENTS Installation To install the power waveform generator a space of at least 45 x 55 x 30 cm W x D x H on top of a stable table is required The device weighs about 25 kg the supporting surface must guarantee mechanical stability under this load The installation area must be kept dry and the temperature within the range specified in the section Technical Data Note that significant amount of power is turned into heat during the device operation Avoid exposing the device to direct sun light since this may substantially elevate the device temperature During operation only the front panel of the power waveform genera tor must be accessible Before installing the device in its final position you should install the line cord the interlock connection and the out put cable The device should be positioned such that the length of the output cable can be minimized The output cable connects the device to the vacuum feedthrough with the terminals of the quadrupole trap Shorter cable implies a lower output capacitance thus a lower output load and a better precision at higher frequencies The line cord is connected to the IEC inlet on the rear panel the interlock connection to the BNC socket The heatsink at the rear panel must n
11. OTAL TJoa f Jar Gta O TOSTAL m a lt lt TUTOTAL internet www cgc instruments com 49 371 355 098 55 Fax 49 371 355 098 60 Tel CGC Instruments info cgc instruments com e mail H bschmannstr 18 D 09112 Chemnitz Page 9 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS Description General The power waveform generator is a combination of several high voltage power amplifiers and a programmable digitally controlled waveform generator It is fit into a metallic 19 case the front panel is shown in Figure 3 The waveform generator is described in an individual manual The waveform generator contains beside its intrinsic function also control and monitoring circuits of the power amplifier The function of them is briefly described in this document for more details please consult the manual of the waveform generator Block diagram The block diagram of the device is shown in Fig 1 The four output voltages Out 4 are produced by fast high voltage amplifiers HVA4O00FN The reference potential of these end stages is the signal HV Gnd symbol This potential is also referred to as offset voltage and usually defines the potential in the center of the connected quad rupole trap The maximum output voltage of each output channel is 400 V relative to the offset voltage The offset voltage is defined by a dc high voltage amplifier HVA1 This amplifier creates the potential HV Gnd in the
12. ans at the heatsink temperature dependent regulation of the fan speed monitored fan operation warning on fan failures e Operating temperature range 10 40 C e weight 23 kg e cleaning use moist cloth only avoid use of organic solvents Shipment Contents e power waveform generator HV AMP400FN 4 400 D line cord universal IEC mains lead length 1 8 m output cable with an Amphenol MS3106F22 18P connector control and diagnostic software user manuals CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com 5 TR UMENT 5 User Manual HV AMP400FN 4 400 D Technical Data Page 8 22 TOO coe TOA JOJEJOUSH WIOJOACM 49 00 y zo wepeip xXoo q eu ld S AE Ej J m R Shou L Q9 NAQQHGAH one pizz ST Bow 22 k DAS TAS OAE hGH NION NE E OAST J Jj e MUI C9 B La net OAST Na OHGAH TAG NGL i __ man J JL g i os sob B T AH d TOT O Rar O por4e34I NE VV sn 7 Ons p 1 98 55 8 lt lt H m Ms mere car 22 1 bon araro 16a TUAH o Me LPOSTALG d lt OHUTOT AL g 33jpg no f c J pa aL EWOCTALE d e lt OCUTOTAY zdrao f zinger Orale O cora lt lt T
13. ct If this is not available the middle contact of the BNC socket can be shorted to the device housing i e to the PE wire to close the interlock loop For the mains connection an IEC inlet with an EMC filter and an inte grated fuse holder is located at the rear panel Use a standard line cord with the universal IEC mains lead to connect the device to the mains To replace the fuses remove the line cord and open the fuse holder Insert the new fuses close the fuse holder and connect the line cord back to the IEC inlet Practical usage The typical output load of the device is a linear quadrupole trap for heavy ions or microparticles The device produces an arbitrary wave form that is intended to be used to create the trapping potential The four output channels provide two pairs of ac voltages the first pair provides a direct signal the second pair an inverted one Thus the device acts as a 2 phase supply for a quadrupole trap consisting of four electrodes CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 18 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS The amplitude of the four output channels is freely variable up to 400 V Since all channels use the same waveform generator the am plitude is the same on each output The offset of the output voltages determines the potential in
14. e extraction pulses are fast precise con verters with a resolution of 16 bits and a low temperature coefficient lt 2 ppm K The amplifiers in the signal path use precise feedback resistors with a tolerance of 0 01 100 ppm and a very low tem perature coefficients 0 2 ppm K The amplifiers use the auto zeroing technique to optimize their dc precision This leads to a sub stantial reduction of the offset and drift voltages On the other hand the ac performance has been optimized by implementing dedicated composition amplifiers to reach wide bandwidth for best precision at higher frequencies CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 12 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS The device is controlled by two programmable circuits the FPGA and the CPU By reprogramming these circuits optional changes of the device functionality can be easily implemented Power amplifier The fast high voltage amplifiers HVAAOOFN that provide four output voltages of up to 400 V relative to the common offset voltage ensure a high accuracy of the output signal up to frequencies of several 100 kHz The frequency response ranges to more than 10 MHz with a gain tolerance of 10 The frequency response is flat up to more than 100 kHz the expected error is lower than 196 The voltage stabil
15. en the output waveform finishes i e he signal reaches zero voltage In this moment the converters DAC3 6 are switched to the previously preset voltages This produces defined voltage pulses at the outputs Similarly to the extraction converters DAC3 6 the digital to analog converter DAC1 creates the control voltage for the offset amplifier HVA1 The voltage of the offset converter DAC1 and the amplitude controlled by the converter D POT cannot be changed immediately by a large step The control hardware ensures that linear ramps are ap plied instead This avoids fast voltage slopes in the output signal due to immediate amplitude change and also unnecessary high output cur rent of the offset amplifier HVAT1 The isolators 21 4 transfer the digital control signals from the ground related levels at the FPGA to levels related to the offset voltage i e the signal HV Gnd or to the output ground The digital circuits are gal vanically connected to the frame ground symbol _L_ i e to the PE wire The FPGA serves also the four trigger inputs and the four trigger out puts as well as the interlock input and the optional LED indicators It communicates with the central microcontroller CPU The microcontrol ler implements the user interface It controls the graphic display LCD reads the keypad and the rotary encoder and serves the USB or Ethernet interface The device can serve only one of the interface types the standard implementation incl
16. k of the device if the device is running or has just been turned off The heatsink temperature may reach up to 60 C you may suffer burns Warning The device weighs about 25 kg Use an appropriate carrier when transporting and provide a stable support for its operation CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 4 22 User Manual HV AMP400FN 4 400 D Safety Information INSTRUMENTS Page 5 22 User Manual HV AMP400FN 4 400 D Technical Data INSTRUMENTS Technical Data Characteristics e four channel fast high voltage amplifier for light capacitive loads e Offset amplifier e digitally controlled waveform generator e dc accuracy ultra low temperature coefficient of the gain e 19 case Output Amplifiers e four channels e output voltage 400 V e output current 225 mA continuous gt 50 mA pulsed e signal bandwidth DC 10 MHz x1096 DC 100 kHz 1 e power bandwidth limited by the output current gt 100 kHz with a load of 100 pF slew rate about 250 V us dependent on the capacitive load e output noise 200 mV typ DC to 500 MHz 13 typ DC to 100 kHz amplification accuracy at low frequencies 600 ppm 200 ppm typ temperature coefficient of the gain at low frequencies 10 ppm K 5 ppm K typ Offset Amplifier output voltage 400 V output current gt 15 mA
17. menu The middle key selects the menu item and launches the corresponding action The rotary encoder is used to change numerical values or select items The function of the encoder in every device state is symbolized on the LCD immediately above the encoder knob In most situations the encoder uses an enhanced speed control This enables you to set precisely any desired value or rapidly make large changes since the value steps are proportional to the rotational speed of the encoder You can change the corresponding value in small steps when you ro tate the encoder slowly or make large changes when you spin the en coder knob rapidly In some situations the encoder s push button is used to confirm the selected value or to switch the rotary encoder function In such cases the symbol iz is shown on the LCD above the encoder knob For more details about the operation see the manual of the waveform generator Terminals The output terminals are located at the connector Output at the rear panel The connector is a robust Amphenol panel receptacle MS3102R22 18S with eight female sockets for the pin layout see Fig 2 and Tab 1 The connection should be realized by a special set of coaxial cables Contact the manufacturer for available solutions Fig 2 The output connector The figure shows the look on the male pin contacts of the cable plug CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmanns
18. nstruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 17 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS Digital trigger signals can be connected to the BNC sockets Trigger Input at the front panel The signals should have standard TTL levels The four channels can be used to start the waveform generation to trigger the extraction etc The four BNC sockets Trigger Output at the front panel can be used to monitor the operation of the device for more details see the manual of the waveform generator They pro vide signals with a standard TTL level that indicate the activity of the waveform generation the presence of the extraction pulse etc The output impedance of the output terminals equals to 50 O Thus the outputs can drive long coaxial cables with a characteristic impedance of 50 O The termination is required especially for longer cables The output load of 50 O causes that the output amplitude decreases from 5 V at unloaded outputs to about 2 5 V at outputs with the nominal load The trigger inputs and outputs are galvanically connected to the device housing thus to the PE wire The connector of the interlock loop is a BNC socket at the rear panel Although it is isolated from the device housing there is no galvanic isolation present The connector has to be shorted to enable the de vice Generally this requires a control by an isolated relay conta
19. nternal connection Also the trap electrodes should be carefully designed to prevent high mutual capacitances or capacitances against the ground i e against an optional shielding or the metallic walls of the vacuum chamber The offset amplifier HVA1 is a precise amplifier that provides output currents up to more than 15 mA In a symmetrical electrode arrange CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 13 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS ment with symmetrical output voltages virtually no output current is necessary to maintain the offset voltage In real experiments ions or electrons may hit the electrodes or the isolation of the electrodes may leak This may cause small current fluxes that have to be compen sated by the offset amplifier HVAT1 The offset voltage is buffered by a large capacitance of about 15 uF that provides a low impedance at high frequencies Due to the high capacitance the limited output current of the offset amplifier limits the attainable slew rate to about 1 V ms Note that to change the offset voltage by 800 V i e for instance from 400 V to 400 V a time of about 1 s is necessary Monitoring To check the output signal of the amplifiers four monitor outputs are available They provide an inverted 1000 times attenuated voltage of the c
20. orresponding output terminal provided they are unloaded Loaded by the nominal impedance of 50 O the monitor terminals pro duce the half amplitude i e have an attenuation of 2000 The fre quency response of the monitor outputs is correct only at the nominal load of 50 O In this case the frequency response is flat up to more than 10 MHz ensuring correct signal forms even at fast transitions at the device outputs If the outputs are unloaded the frequency re sponse will depend on the length of the connected cable and may show drop or peaking at higher frequencies For a proper monitor out put connect an oscilloscope or another signal analyzer using well terminated cables with a characteristic impedance of 50 O Embedded safety precautions The device is equipped with an interlock loop that disables the signal output if it is opened The terminals of the interlock loop are located at a BNC socket at the rear panel They are typically conducted to the control system of the vacuum setup where they are short connected if the vacuum pressure is sufficiently low To implement a security push button the interlock loop can be additionally interrupted by a switch with a breaking contact The amplifiers and their power supplies are cooled by a large heatsink located at the rear panel of the device The heatsink is actively cooled by two fans The rotational speed of the fans is controlled by the tem CGC Instruments Tel 49 371 355 098 55 in
21. ot be covered or obstructed dur ing device operation it must be provided with sufficiently cool air for active cooling of the device Take necessary precautions to ensure a sufficient supply of cool air when installing the device in closed racks Inspect and clean the fans at the heatsink regularly Use a vacuum cleaner to remove dust from the fans and from the heatsink Large dust layers substantially lower the cooling power of the heatsink thus the device may overheat if the heatsink is extremely dirty Also the lifetime of dirty fans may be significantly shortened To power the device a power mains socket with proper grounding is required Check the power rating of the mains socket since the peak power consumption of the device during the startup may be as high as 650 VA Before powering on the system read the user manual carefully If already connected disconnect the load and power on the device by toggling the rocker switch Power The LED above the power switch will light green and the display will turn on Press the middle key en ter and start the dialog box Status Monitor by selecting the menu item Monitor Status CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 22 22 User Manual HV AMP400FN 4 400 D Installation INSTRUMENTS The value Interlock shows the state of the interlock
22. range of 400 V relative to the output ground symbol v The output ground is galvanically isolated from other circuits thus it can be externally connected to the vacuum chamber without any risk of ground loop The central circuit of the waveform generator is the FPGA Field Pro grammable Gate Array It controls the waveform digital to analog converter DAC2 and the memory MRAM To generate a waveform the digital data samples are read from the memory and passed to the digital to analog converter where they are converted to voltages in the range of 10 V The memory MRAM is a non volatile magnetoresistive random access memory with a space for about 1 million data sam ples The output signal from the waveform converter DAC2 is attenuated in the next digital to analog converter D POT to the desired amplitude The output signal is passed directly or via an inverter to four summing CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 10 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS amplifiers They create the control voltages for the output amplifiers HVAAOOFN from the waveform signal and from the extraction voltages produced by the digital to analog converters DAC3 6 During waveform generation the converters DAC3 6 are reset thus do not contribute to the output voltages An extraction starts wh
23. ternet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 14 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS perature of the power semiconductor devices Thus in the standby state with disabled signal output the device produces only minimal acoustic noise since the fan speed is rather low or the fans are com pletely stopped for a detailed description of the fan controller see the manual of the waveform generator With activated amplifiers and with large output voltages at high frequencies the heatsink temperature increases and the fans are controlled to rotate faster Under certain conditions the cooling power of the device may be insufficient and the power semiconductor devices could overheat This may happen if the output is overloaded or even shorted if the ambient temperature is high or if any of the fans fails To prevent any catastrophic damage the power supply units and the signal generation are deactivated if the temperatures exceed a preset level The device also monitors all supply voltages and shuts down if any of the voltages is out the predefined limits This may happen on overload or in case of any hardware failure This measure prevents the power semiconductor devices from overloading and or overheating Control and Indication Elements All control elements are located on the front panel of the power wave form generator see
24. tional external shutdown button via the interlock loop Power Supply e rated voltage 230 V 10 50 Hz e inrush current limited to 3 6 A e power consumption standby amplifier deactivated 37 VA amplifier activated but without signal 110 VA maximum sine 800 V at 100 kHz 160 VA peak 1 1 kVA e main fuse T 1 25 A slow acting size 25x20 mm e mains connection IEC inlet with EMC filter and integrated fuse holder CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 7 22 User Manual HV AMP400FN 4 400 D Technical Data INSTRUMENTS Connectors e data link USB receptacle series B location front panel e monitor outputs trigger inputs and outputs each set four 50 O BNC sockets location front panel e output Amphenol MS3102R22 18S high voltage panel receptacle with 8 female sockets location rear panel e interlock loop 50 O BNC socket location rear panel e mains input IEC inlet location rear panel General e 6 U 19 bench top case height 266 mm width 448 mm depth 380 mm total depth with heatsink fans and handles 488 mm total height with case feet 280 mm side panels black lacquered cover and bottom panels silver gray painted front and rear panels clear anodized e heatsink black anodized extruded aluminum profile at the rear panel e forced cooling two 120 mm f
25. tr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 16 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS Note that the output terminals are not galvanically connected to the device housing i e to the PE wire The output ground is defined by the shielding of the output cables and should be connected to the me tallic parts of the vacuum chamber in that the quadrupole system is located Tab 1 Pin layout of the output connector Em 1589 Descipton 8 8 699 postive output ground o 6069 negative ouput ground For monitoring purposes the output signals are attenuated and in verted by active attenuators and connected to the four BNC sockets Output Monitor at the front panel For the assignment of the monitor channels to the output signals see Tab 2 The BNC sockets are iso lated from the device housing and grounded to the output ground If you connect any device to the monitor outputs take care about the grounding An oscilloscope equipped with a standard grounding to the PE wire may introduce a large ground loop that can affect the purity of the signals at the device outputs Note that due to the inversion of the monitor outputs the signals have an opposite polarity compared to the high voltage outputs at the rear panel Tab 2 Monitor channel assignment CGC Instruments Tel 49 371 355 098 55 internet www cgc i
26. udes the USB interface Using the interface waveform data can be transferred from to the device or the system can be remotely controlled The microcontroller uses a serial bus 1 C for the communication with several other circuits the PLL the ADC1 4 and the fan controller FanCtrl The PLL is a time base generator producing the clock for the waveform generator from a quartz oscillator XO The desired fre quency is gained by a multiplication by a rational number using the PLL Phase Locked Loop technique The analog to digital converters ADC1 4 monitor the supply voltages of the device Since two of them ADC3 and ADCA are galvanically connected to the offset voltage i e to the signal HV Gnd the lC bus is isolated by a bus isolator IS5 CGC Instruments Tel 49 371 355 098 55 internet www cgc instruments com H bschmannstr 18 D 09112 Chemnitz Fax 49 371 355 098 60 e mail info cgc instruments com Page 11 22 User Manual HV AMP400FN 4 400 D Description INSTRUMENTS The fan controller FanCtrl is a microcontroller based unit that controls and monitors two fans at the heatsink It measures the temperature at the heatsink and the chassis plate in the center of the device by means of six independent sensors The acquired temperature values are used to regulate the rotational speed of the fans If any sensor fails or the measured temperature exceeds a predefined value the device is shut down independently on the fan function
27. ust accommodate to the ambient temperature to avoid moisture condensation Take this into account when setting up the device after transporting it e Do not operate the device if it is damaged or not functioning prop erly Never use damaged cables or accessories e Do not open the device case install replacement parts or perform modifications to the device There are no user serviceable parts in side To avoid damage connect the line cord to a properly wired and grounded receptacle only Be sure that the mains voltage and the fuse rating match the device specification Never operate the device during electrical storms e Never use corrosive or abrasive cleaning agents or polishes avoid the usage of organic solvents If necessary clean the device with a soft moist cloth Make sure that the device is completely dry and free from contaminants before powering it on Warning The device produces lethal voltages Never touch the out put terminals even if the device is powered off The device is equipped with several protection features that eliminate the risk of contact with a high voltage This protection however may fail in case of a fault and unexpected high voltages may be present at the terminals Warning The amplifier is an electronic device that is sensitive to elec trostatic electricity While manipulating with the amplifier the ESD Electro Static Discharge protection rules must be kept in mind Avoid touching the heatsin
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