ELMB miscellanea Dr Zhige (Gary) Zhang

ELMB miscellanea 1)Over voltage protection for analog input 2)Hardware resetting 3)Allocation for RICH2 4)Configuration 5)Channel’s names 6)Connection

Over voltage protection for analog input  Two chips involve the analog input channels: multiplexer and ADC  The multiplexer (MAX4582) has the protecting function ± 5 V  The maximum continuous current pass multiplexer is 20mA  The serial resistor on ELMB adaptor is 1 K for each line  The safety input range of ADC is -2 to 5V.

Analogy input over voltage protection  When over voltage happened, larger current passes the diode  The over voltage drops on the resistor and internal mechanism but not  Only positive input has been tested up to 70 Volt 1K

Analogy input over voltage protection Both ground (Red) and no ground (Blue) input has been tested In all the case the ELMB goes back to normal after the voltage drop back Only one channel has been tested

Hardware Resetting  When software reset cannot work like what happened in Frascati beam test, hardware resetting are needed  Two ways of hardware resetting  Switch off and then on CAN power  Set the pin one of CAN BUS to zero.  The first method will reset all the ELMBs powered by same power supply.  The second way can reset each ELMBs individually. But a lot of cabling are needed.  As one ELMB is used to control the power supply, we can use it to control individual reset.

Allocation for RICH2 - Total DCS sensors in RICH2 2.5 V 108 PT 1K 288 5V 54 Humidity 4 X 5V PT Pressure sensors +-0.1V 2 (4 channels) Pt100 On mirror panels 20 PT bi 0.1mV 4 HV_0 3x2.5V ×9 LV_0 4xPT 1K HPDBox_A HPDBox_C GAS Vessel Humid 2 X 5V Pt PT 100 Outside 10 B field 2 B field 4 Light leak Door lock RICH 2 LV_1 4xPT 1K LV_2 4xPT 1K LV_3 4xPT 1K HV_1 3x2.5V Base supplies 2x5V Si bias 1x5V Total

Allocation for RICH2 - Table of ELMB detail ELMB128 requirement of RICH2 07/07/2006 DOC Source: Channels: ADC: 64 Digital: 8X3 SPI VA: 10V 10mA + VD: 10V 15mA VC: 10V 20mA Cable-C CANbus VA VD Cable-Eq Sensor:Channels required:ELMB connection:Power SupplyDOC source Board address (Ch left/Total Ch) Range Pt100: 38 (4-wire) 8 HPD box 20 Gas Vessel 10 Out side Detector 76=38*2 (2 boards) 63,62/(3F,3E) (52/128)0.1 VI from VA 0.6 mA/sensor 8 mA/board 18 mA/board LHCb Pt 1000: 432 HPD electronic board 2*(9*(8+4*4)) 432 (6 boards) 59-53/(3B-35) (16/448) 25 mV25 µA/sensor /board LHCb Humidity sensor Type: HIH-3610? 4 450/(32) (60/64)5 Pressure Sensor Type: SM (2 Pt100) 62/(3E)(48/128) 62/(3E)(44/128) +-0.1V+-2.5/+-5V Magnetic sensor ATLAS B-sensor 4 4Special ELMB 42/(2A) B-field only Voltage Monitor Base supply (2) Si bias 1 3x9x2=54 VHV base 6 (1.56 V) 6X9X2= (5V) 108(2.5V) (2 boards) 50/(32) (6/64) 46,45/(2E,2D) (40/128) 5 V 2.5V -----LHCb

Configurations -Sample table to be finished 1.ELMB settings dist_2: + CAN_BUS address: ELMB/CAN_BUS_0/ELMB_63_PT100/AI DPConfig data.rate.hz0 (15Hz)EEPROM stored settings Check only.range.volt100 (mV).mode.read1 (unipolar) CAN_BUS address: ELMB/CAN_BUS_0/ELMB_63_PT100.id63/(3F)Hardware setting CAN_BUS address: ELMB/CAN_BUS_0/ELMB_62_PT100/AI DPConfig data.rate.hz0 (15Hz)EEPROM stored settings Check only.range.volt100 (mV).mode.read0 (bipolar) CAN_BUS address: ELMB/CAN_BUS_0/ELMB_62_PT100.id62/(3E)Hardware setting …

Channel’s name -sample table to be finished DP (Hardware channel) (dist_2:ELMB/CAN_BUS_0/ELMB_ +) Alias (Logical name) (dist_2/RICH2/gasVessel +) Config data: Max/Min OFFONUnit 63_PT100/AI /PT100_00_01tempFlatMirror0_0Offset=7.72*Offset=7.72 oCoC 63_PT100/AI/PT100_02_03tempFlatMirror0_17.08 oCoC 63_PT100/AI/PT100_04_05tempFlatMirror0_SurfaceFront6.43 oCoC 63_PT100/AI/PT100_06_07tempFlatMirror0_SurfaceBack6.43 oCoC 63_PT100/AI/PT100_08_09tempFlatMirror0_25.79 oCoC 63_PT100/AI/PT100_10_11tempFlatMirror0_35.15 oCoC 63_PT100/AI/PT100_12_13tempSphereMirror0_05.79 oCoC 63_PT100/AI/PT100_14_15tempSphereMirror0_SurfaceFront5.15 oCoC 63_PT100/AI/PT100_16_17tempSphereMirror0_SurfaceBack5.15 oCoC 63_PT100/AI/PT100_18_19tempSphereMirror0_14.50 oCoC 63_PT100/AI/PT100_20_21tempSphereMirror1_07.08 oCoC 63_PT100/AI/PT100_22_23tempSphereMirror1_SurfaceFront6.43 oCoC 63_PT100/AI/PT100_24_25tempSphereMirror1_SurfaceBack6.43 oCoC 63_PT100/AI/PT100_26_27tempSphereMirror1_15.79 oCoC 63_PT100/AI/PT100_28_29tempFlatMirror1_ oCoC

Connections -Sample table to be finished RICH 2 GasVessel ELMB ID CABLEPLUGT_FM_0T_SM_0T_SM_1T_FM_1PressureT_OutSide 63J3G00P0, P10-3(8),SM(4)0(2),SM0(2) J4G01P2,P3 SM1(2),1(2)ALL(8)0-1(4) J11G02P4SM(4),2-3(4)0&1(4) J10G032-9(16) 62J3G04 J4G05 J11G06 J10G07T(4) P(8) P0-P4 Fischer S104 A pole for 4 PT100