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1. 7 yellow HV Monitor high voltage output 10kV corresponds to 10V at PIN7 _ 4kV corresponds to approx 4V at PIN7 Positive DC voltage applied to PIN8 sets up _ high voltage value HV l 10kV corresponds to 10V at PIN8 kv corresponds to approx 4V at PIN8 E E A TTT or means TEN 0 low level OV 1 means logical 1 high level SV 24V Molex 39 30 1040 24V 4 3 2 1 o PIN color DESIGNATION DESCRIPTION 1 2 red 24V DC INPUT positive 24V DC for turn on the _ Pockels cell driver Return from power supply producing 3 4 black RETURN 424V DC HV OUTPUT Molex 39 30 1060 HV Output at 8 7 6 5 ajale ji ENABLE JUMPER One can use ENABLE JUMPER instead of ENABLE signal of INTERFACE It isn t recommended to use ENABLE JUMPER and ENABLE signal at the same time HV PROGRAM JUMPER AND HV PROGRAM TRIMPOD _ One can use HV PROGRAM JUMPER instead of HV PROGRAM sional of INTERFACE If this jumper is set on the output voltage is defined with HV PROGRAM TRIMPOD state It isn t recommended to use HV PROGRAM JUMPER and HV PROGRAM signal at the same time Safety e Avoid casual contacts of personnel with output cables and with the load e Do not connect disconnect cables while driver is turned on e Do not operate with disconnected load e Be very careful setting jumpers on and off and using HV Program trimpot acci2. the module greatly depends on load capacitance Full performance is achievable at load capacitance lt 11 pF e Module s output is bipolar This means that e g 4k V pulse is physically formed by applying 2kV to the positive output wire and 2kV to the negative see figure 2kV OV 2kV Nevertheless all descriptions of HV output are given in terms of voltage differences Please keep it in mind e Sometimes output is delayed If no switching of the output voltage occurs for a long time about 100 us the driver needs to refresh its state During refreshment it s prohibited to switch the output As a result if pulse width is more than 100 us or if the distance between two sequential pulses is more than 100 us sometimes switching of the high voltage output may be delayed The delay time is about 150 ns Specifications ELECTRICAL SPECIFICATION E T ETT E A E E E T er rererrererccrererccrecrereccrererecrecrereccreecrerececrerececrcreceecrcrecrecrecreceecrecreceecrecreceecrerececrercc re rereceecrerer ee rerecrrcrecrerrcrecrececrerer rec rcreccrererecrerecrerrecrerecrrecrererrererrr ect Humidity 90 non condensing In terms of bipolar output see also Technical notes section 10 90 level warranted at load capacitance 11 pF and below MECHANICAL SPECIFICATION
3. dental contact to the board may be fatal from the same point of view it s recommended to control the driver not manually but remotely via Interface connector e Be careful with driver s neighborhood do not store disordered items close to any side of the driver Do not turn the driver on if it was already damaged with water chemicals mechanical or electrical shock do not self repair the driver Operations Manual control Connect 24VDC power supply pulse generator and Pockels cell Set up HV PROGRAM JUMPER Turn on 24VDC power supply Set up ENABLE JUMPER Use HV PROGRAM TRIMPOD to set up required output voltage Send driving pulses from pulse generator to PIN1 of INTERFACE Set pulse width longer than 200 ns To power down the driver turn off 24VDC power supply or remove ENABLE JUMPER Operations Automatic control B WN ID Connect 24V INTERFACE and HV OUTPUT connectors to the board Remove HV PROGRAM JUMPER remove ENABLE JUMPER DISABLE the high voltage output Apply the correct nominal DC INPUT power to the module Set up the required output voltage by applying a DC voltage to the HV PROGRAM PIN8 of INTERFACE ENABLE the high voltage output Send driving pulses to PIN of INTERFACE Set pulse width longer than 200 ns To power down the driver remove DC INPUT power or DISABLE high voltage output Technical notes Performance of
4. rev 1 05 2015 01 05 QBU 10kKV Pockels cell driver User manual Important note please measure the output with symmetrical differential high voltage probe only Measurement made with inappropriate equipment is acommon cause of driver s failure Overview QBU 10kV Pockels cell driver produces high voltage pulses with high repetition rate fast risetime and falltime adjustable voltage amplitude and pulse width Two control types are available manual and automatic HV Output hidden ENABLE jumper HV PROGRAM INTERFACE jumper eo y trimpot 24V DC 11 HV Output Interfaces signals descriptions INTERFACE Molex 39 30 1060 INTERFACE 8 7 615 4 3 21 PIN color DESIGNATION DESCRIPTION While 0 or 1 is applied to PIN1 high _ voltage output is maintained _ correspondingly at 0V or HV level 1 Pulse l l _ Sequences of incoming pulses with period less than approx 200 ns will be ignored by _ the driver Temperature Provides internal temperature state see also Monitor _ temperature monitor section Provides 15V DC output level a aod maximal current capability is 100mA _ HV output is enabled disabled by PIN4 ene neaule i 1 enable 0 disable 5 6 black Interface Return _ PINS and PIN6 are connected to the driver s ground circuit The voltage at PIN7 is a monitor signal _ proportional to the measured value of the
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