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S p e z i a l e l e k t r o n i k     G m b H

 

 

 

iseg Spezialelektronik GmbH 

Email: [email protected] 

Phone  ++ 49 351 / 26 996 - 0 

 

Bautzner Landstr. 23 

http://www.iseg-hv.com 

Fax 

++ 49 351 / 26 996 - 21 

 

D - 01454 Radeberg / Rossendorf 

Germany 

 

 

 

Status register 2 

(BA + 0x30) 

 Bit 

Name 

Description 

Remark 

 

D15 

REG2ER_2 

Quality of output voltage not given at present 

 

 D14 

REG1ER_2 

V

max

 or I

max

 is / was exceeded 

 

Channel 

D13 

EXTINH_2 

External inhibit was / is active  

 

 D12 

RANGE_2 

V

set

 to V

max

 ratio > 1 

D(BA+0x08) > V

max

B

 

D11 

KEY_CHANGED 

A frontpanel switch position was changed 

ON_OFF_2, 
IN_EXT_2, KILL_2 

 D10 

EOP_2  V

out

 has reached set value 

End of process_2 

 D9 

ILIM_2  I

out

 was > I

max

 programmable 

Current trip 

 D8 

 

 

 

 

D7 

REG2ER_1 

Quality of output voltage not given at present 

 

 D6 

REG1ER_1 

V

max

 or I

max

 is / was exceeded 

 

Channel

  D5 

EXTINH_1 

External inhibit was / is active  

 

 D4 

RANGE_1 

V

set

 to V

max

 ratio > 1 

A(BA+0x04) > V

max

A

 

D3 

KEY_CHANGED 

A frontpanel switch position was changed 

ON_OFF_1, 
IN_EXT_1, KILL_1 

 D2 

EOP_1  V

out

 has reached set value 

End of process_1 

 D1 

ILIM_1  I

out

 was > I

max

 programmable 

Current trip 

 

D0 

TOT 

Timeout error 

New initialisation 

The individual bits are set on the occurrence of the event. A general clear is performed after readout.  

If the Output voltage was permanently switched off by exceeding V

max

 or I

max

 (ENABLE KILL resp. Current trip), 

or INHIBIT respectively, the error bits (REG1ER_, EXTINH_, ILIM_) have to be reset by reading 

 Status 

register 2

 before an output voltage can be set again. 

 

Start voltage change 

(BA + 0x34 / Ba + 0x38)

A change in the output voltage of set voltage (BA + 0x04 / BA + 0x08) is performed by reading these registers. 
Writing to the registers stores the data as new set voltage (V

set

 

 V

max

) and starts the voltage change.  

The change of output voltage is blocked, if the conditions are unavailable to start voltage change corresponding 
these description. 

Command execution can be checked by reading status register 1 (BA + 0x00). The bits D14 (channel B), D6 
(channel A) respectively are set on start of voltage change. Actual voltage reaching the set voltage is flagged by 
the bits D10, D2 of status register 2 (BA + 0x30) respectively. An interruption of the voltage change (e.g. 
external INHIBIT is active) is also ascertainable. 
 

Module identifier 

(BA + 0x3C)

D15 .. D0  

4 digit serial number, BCD coded 

 

Current software limit 

(BA + 0x44 / BA + 0x48)

The maximal output current per channel corresponding current resolution. If the output current exceeds the 
programmable limit, the output voltage will be shut off permanently by the software (Current trip). The Current 
trip reaction time is lessen to 60 ms. 

Writing to the registers with maximal output current = 0, not a current trip will be programmed. 

Hardware maximum output current limit (I

max

) worked independently of programmable current software limit. 

Содержание VHQ 202M

Страница 1: ... diagram Appendix B Rotary switch locations Attention It is not allowed to use the unit if the covers have been removed We decline all responsibility for damages and injuries caused by an improper use of the module It is highly recommended to read the operators manual before any kind of operation Note The information in this manual is subject to change without notice We take no responsibility what...

Страница 2: ... 2 mA 0 1 mA 0 1 mA with option M h 0 6 mA 0 4 mA 0 3 mA 0 2 mA with option _104 100 µA 100 µA 100 µA 100 µA Ripple typ 0 5 mVP P 0 5 mVP P 1 mVP P 2 mVP P max 2 mVP P 2 mVP P 2 mVP P 5 mVP P Stability VO 5 10 5 idle to max load VO VINPUT 5 10 5 Temperature coefficient 5 10 5 K LCD Display 4 digits with sign switch controlled voltage display in V current display in µA Resolution of measurement Cur...

Страница 3: ...ed with very high precision to the set point Separate security circuits prevent exceeding the front panel switch settings for the current Imax and voltage Vmax limits A monitoring circuit prevents malfunction caused by low supply voltage The internal error detection logic evaluates the corresponding error signals and the external INHIBIT signal It allows the detection of short overcurrent due to s...

Страница 4: ...on the cover side see appendix B The chosen polarity is displayed by a LED on the front panel 14 and a sign on the LCD display 1 Attention It is not allowed to change the polarity under power An undefined switch setting not at one of the end positions will cause no output voltage High voltage output is switched on with HV ON switch 8 at the front panel The viability is signaled by the yellow LED 1...

Страница 5: ... is signaled by the red error LED on the front panel 6 Function of KILL switch 10 Switch to the right position ENABLE KILL The output voltage will be shut off permanently without ramp on exceeding Vmax Imax or in the presence of an INHIBIT signal Low active at the INHIBIT input 11 Restoring the output voltage is possible after operating the switches HV ON or KILL or reading Status register 2 and t...

Страница 6: ...3 A2 A1 Read Write 0 0 0 0 0 0 0 Status register 1 0 0 0 0 0 1 0 Set voltage Channel A V Set voltage Channel A Vset Vmax V 0 0 0 0 1 0 0 Set voltage Channel B V Set voltage Channel B Vset Vmax V 0 0 0 0 1 1 0 Ramp speed Channel A 2 255 V s Ramp speed Channel A 2 255 V s 0 0 0 1 0 0 0 Ramp speed Channel B 2 255 V s Ramp speed Channel B 2 255 V s 0 0 0 1 0 1 0 Actual voltage Channel A V 0 0 0 1 1 0 ...

Страница 7: ...0 Vout 0 This register is representing the general status of the VHQ Error is formed by the logic or of REG2ER_ REG1ER_ EXTINH_ RANGE_ and ILIM_ from Status register 2 Vout 0 is formed by DAC output 0 and actual voltage 5 V Set voltage Channel A B BA 0x04 BA 0x08 Set voltage Vset from 0 to Vmax in V If Vset greater then Vmax BA 0x24 BA 0x28 Vset will be not changed Ramp speed Channel A B BA 0x0C B...

Страница 8: ...LE KILL resp Current trip or INHIBIT respectively the error bits REG1ER_ EXTINH_ ILIM_ have to be reset by reading Status register 2 before an output voltage can be set again Start voltage change BA 0x34 Ba 0x38 A change in the output voltage of set voltage BA 0x04 BA 0x08 is performed by reading these registers Writing to the registers stores the data as new set voltage Vset Vmax and starts the v...

Страница 9: ...h channels in DAC mode ok n if value_s 0x808 0 check on HV ON OFF switch setting printf one of the two channels is OFF n printf program terminating n return 1 printf both channels ON ok n if value_s 0x4 0 whats the output polarity printf polarity of channel A is positive n else printf polarity of channel A is negative n if value_s 0x400 0 printf polarity of channel B is positive n else printf pola...

Страница 10: ...ushort base ACT_VOLT_B printf channel B is at d V n value_s printf press any key to ramp down and exit n ramp channels down getc stdin ushort base START_VOLT_A 0 set channel A voltage to 0 V sleep 1 ushort base START_VOLT_B 0 set channel B voltage to 0 V return 0 vhq h header file for iseg vme hv boards mki 24 1 96 vhq registers define STAT_REG1 0x00 define SET_VOLT_A 0x04 define SET_VOLT_B 0x08 d...

Страница 11: ...ecoder Data bus buffer LCD display driver Micro Controller Filter Reference voltage ADC MUX DAC 1 DAC 2 Front panel switches Resonance converter HV Transformer Rectifier Polarity switch HV Filter HV OUTPUT A Channel A rectifier AGC amplifier Precision Vmax Imax Error logic Inhibit Supply voltage monitoring Hardware voltage ramp Filter HV OUTPUT B Channel B 5V 12V monitoring monitoring Appendix A B...

Страница 12: ...g hv de Phone 49 351 26 996 0 Bautzner Landstr 23 http www iseg hv com Fax 49 351 26 996 21 D 01454 Radeberg Rossendorf Germany 12 POLARITY NEG POS A NEG POS B Appendix B VHQ side cover Polarity rotary switch eg channel A Polarity negative channel B Polarity positive ...

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