ENDCAP Alignment
Contents
1. ENDCAP Alignme ANALOG INTERFACE BOARD User s Manual FNAL PNPI 2003 Analog Interface Board User s manual 1 mtroduction The analog interface board provides a stable 11 3 V voltage for the R sensors LPX50 and Z sensors ETI LCP8S 10 connection of the biaxial inclinometer ApGeo 900 R and Z sensors to a voltmeter cross connection of temperature T sensors and low voltage distribution for lasers No control is required for this board 2 Construction The analog interface board has seven connectors J1 6 port RJ1 1 jack for connection Port 1 the biaxial inclinometer Port 2 Z1 sensor Port 3 Z2 sensor Port 4 R1 sensor Port 5 R2 sensor Port 6 T1 sensor J2 4 port RJ1 1 jack Port 1 Laser Output This station Port 2 Laser Input Port 3 T2 T3 Input Port 4 T Output T1 T2 T3 J3 11 jack Laser Output to the next station J4 J5 Low voltage distribution connectors J6 3M 20 pin header Output to a voltmeter J7 11 jack R3 sensor used for MEl only The analog interface board has four svvitches performed as pin strips controlled by shunts Qumpers P1 Select the input voltage for the Z1 sensor One shunt is used alvvays P2 Connect Z2 input voltage to the output connector J6 Two shunts are used simultaneously If connection is not required both shunts should be placed to a single pin of the same switch Page 1 of 102. Analog Interface Board User s manual P3 Select the current board laser output Two shunts are used always P4 Select a source for the channel 4 at the output connector J6 pins 7 8 Z1 reference voltage or R3 sensor Two shunts are used always 3 Circuit Diagram The analog interface board consists of the low drop output LDO voltage regulator and cross connection circuitry Voltage regulator is performed in LT1761 U1 integrated circuit with external resistive divider R1 R2 that determines the output voltage as 11 2 V Red LED indicates a presence of the regulated voltage Page 2 of 10 Analog Interface Board User s manual 4 Application Notes 1 Admissible positions of shunt at the Pl switch are the following any other position is prohibited P1 P1 2 Admissible positions of shunts at the P1 switch are the following any other position is prohibited J6 19 V2 3 Admissible positions of shunt at the P1 switch are the following any other position is prohibited P2 WOOO OO L OO L OO JOOOOO L L LI LI a 5539 8 23 d ra ey ea ie yy 4 Admissible positions of shunt at the P1 switch are the following any other position is prohibited P4 P4 Z1VREF L O Z1VREF L O Page 3 of 10 Analog Interface Board User s manual 5 Functioning The analog interface board is a passive device representing
3. a cross connection board with internal voltage regulator It works properly if all settings and connections are correct 6 Debugging and Testing Necessary equipment o Digital voltmeter 12 15 V power supply o Power cable for analog interface board Properly manufactured analog interface boards do not require any adjustments and should work correct at once 1 Check the assembled board visually It must not have visible damages All components and their values must be in accordance with documents 2 Connect the analog interface board under test to the power supply 12 15 V and turn on it Check an input voltage after the F1 and F2 fuses replace them if necessary 3 Check 11 3V output voltage of the LDO voltage regulator 4 A complete test of the analog alignment DAQ including the analog interface board must be performed before a final assembly 7 Troubleshooting and Maintenance Output voltage of the voltage regulator is wrong Check an input voltage it should be 12 15 V Check a fuse F2 replace it if necessary Check values of the R1 and R2 resistors Check polarity of the C6 C8 and C9 tantalum capacitors a white band marks a positive pad If the previous checks do not discover a reason of failure replace the U1 LTC11761 integrated circuit Page 4 of 10 Analog Interface Board 8 Specification General Dimensions of the board Input connector J1 Input output connector J2 Output connecto
4. r J3 Power connectors J4 J5 Output connector J6 Switch P1 Switch P2 Switch P3 Power characteristics Minimum input voltage Maximum input voltage Output regulated voltage Power consumption Current consumption Inclinometer R sensors Z sensors On board power protection Two fuses User s manual 6 7 x 2 9 6 port RJ11 jack 4 port RJ11 jack RJ11 jack 2 pin Molex Sabre 43160 3102 20 pin 3M header 3428 6002 3 pin single raw strip 3M 929647 09 36 I modified with shunt 3M 929957 08 2 x 2 double raw strip 3M 929665 09 36 I modified with shunts 3M 929957 08 6 x 2 double raw strip 3M 929665 09 36 I modified with shunts 3M 929957 08 12 V 15 V 11 2 V 480 mW with entire sensor set 7 mA 2x 1 13 2 26 mA 2x11 3 22 6 mA 0 5 A LT1761 voltage regulator has overcurrent and overtemperature protection Specification of connectors Connector J1 port 1 Inclinometer Input Page 5 of 10 Analog Interface Board User s manual Connector J1 ports 2 5 Z1 Z2 R1 R2 V WIPER GND W V vvrpeR VREF GND VRE Connector J2 port 1 Laser Out Laser Output Laser Output Connector J2 port 2 Laser Input Laser 1 Input Laser 1 Input Laser 2 Input Laser 2 Input Laser 3 Input Laser 3 Input Page 6 of 10 Analog Interface Board User s manual Connector J2 port 3 T2 T3 Inp
5. ut Connector J2 port 4 T Output Connector J3 Laser Output to the next station Laser 1 Output Laser 1 Output Laser 2 Output Laser 2 Output Laser 3 Output Laser 3 Output Connectors J4 15 Low voltage distribution Page 7 of 10 Analog Interface Board User s manual Output connector J6 GND Vx GND Vy Vziw GND Vziw Vzir or Vh3 GND Vzi or Vh3 Vz2w GND Vzw Vriw GND Vriw VRIR GND Vrir Vk vv GND Vpow Vk R GND Vror lt VpR gt lt GND VzR gt Selected by P4 If P2 shunts are inserted kk Connector J7 R3 V WIPER GND V vrPER Page 8 of 10 Analog Interface Board User s manual mr Fig 1 The analog interface board Page 9 of 10
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