Technical Information Manual

Transcription

1 Technical Information Manual Version September 1998 MOD. A 522 MOD. A 526 BABAR-SVT P.S. BOARDS

2 TABLE OF CONTENTS TABLE OF CONTENTS... ii LIST OF FIGURES... ii LIST OF TABLES... ii 1. INTRODUCTION DEDICATED FLOATING SUPPLY BOARDS MOD. A522 DOUBLE FACE SILICON POWER SUPPLY MOD. A522 PACKAGING MOD. A522 EXTERNAL COMPONENTS MOD. A522 INTERNAL COMPONENTS MOD. A522 CHANNEL CHARACTERISTICS MOD. A522 VMAX HARDWARE SETTING MOD. A522 SENSE INPUTS MOD. A526 FLOATING CH. BOARD MOD. A526 PACKAGING MOD. A526 EXTERNAL COMPONENTS MOD. A526 INTERNAL COMPONENTS MOD. A526 CHANNELS CHARACTERISTICS MOD. A526 SENSE INPUTS MOD. A526 J1 SETTING APPENDIX A... A.1 LIST OF FIGURES Fig. 2.1: User Operations upon OVC detection... 5 Fig. 2.2: Mod. A522 Interconnection Board Jumpers Location... 7 Fig. 2.3: Mod. A522 Front Panel... 9 Fig. 2.4: Mod. A522 Output Connector Fig. 2.5: Channel Connection Diagram Fig. 2.6: Mod. A522 Line impedance for the 2V 500 ma channel Fig. 2.7: Mod. A522 Line impedance for the 5V 500 ma - 1 A channel Fig. 2.8: Mod. A526 Jumpers Location Fig. 2.9: Mod. A526 Front Panel Connector Fig. 2.10: Mod. A526 Front Panel Fig. 2.11: Channel Connection Diagram Fig. 2.12: Mod. A526 J1 Jumpers Locations LIST OF TABLES Table 2.1: A522 Channels Features... 3 Table 2.2: A522 Main Board Jumpers... 5 Table 2.3: A522 Interconnection Board Jumpers... 6 Table 2.4: A526 Board Jumpers Table 2.5: Mod. A526 J1 Jumper Position ii

3 CAEN will repair or replace any product within the guarantee period if the Guarantor declares that the product is defective due to workmanship or materials and has not been caused by mishandling, negligence on behalf of the User, accident or any abnormal conditions or operations. CAEN declines all responsibility for damages or injuries caused by an improper use of the Modules due to negligence on behalf of the User. It is strongly recommended to read thoroughly the User's Manual before any kind of operation. CAEN reserves the right to change partially or entirely the contents of this Manual at any time and without giving any notice.

4 1. INTRODUCTION The CAEN UNIVERSAL MULTICHANNEL POWER SUPPLY SYSTEM, Model SY527, has been designed specifically to power the variety of detectors used in modern High Energy Physics Experiments, such as photomultipliers, wire chambers, streamer tubes, silicon detectors, etc. The System is modular and flexible enough to be adequate both for big experiments, where a large number of channels are to be monitored by an on-line computer, and for test labs where simple manual operation of a limited number of channels is often desired. The system is organized into "crates". Each crate is a 19" wide 8 U high euro mechanics rack; the modules bearing the output channels (Channels Boards) are realized in 6 U plugin modules, the remaining 2 U is dedicated to house the system Fan Tray unit. Up to 10 Channels Boards may be plugged into a single crate. Different plug-in modules are available (Positive, Negative, Floating or Distributor Boards) and can be freely mixed in a single system in order to obtain the necessary configuration. Two voltage values (V0set, V1set) and two current limit values (I0set, I1set) can be programmed for each power channel. The switching from one value to the other is performed via two external (NIM or TTL) input levels (VSEL, ISEL). The maximum rate of change of the voltage (Volt/sec), may be programmed for each channel. Two distinct values are available, depending on the sign of the change (Ramp-Up, Ramp-Down). Any attempt to change the voltage will result in a linear increase or decrease with time, the rate being determined by "Ramp-Up" or "Ramp-Down" parameter. This feature has been provided to protect those devices that could be harmed by a sudden voltage step-up. For some Boards the ISET values of the channels represent a "software controlled" hardware protection on the channels' currents: the channel cannot draw a current higher than its programmed limit (Boards with programmable current hardware protections). Other Boards has the current hardware protection fixed to a value common for all the channels; the ISET values are used to signal a fault, but the channels can draw a current larger than their ISET values (Boards with fixed current hardware protections). The following types of Boards are currently available: Floating Power Supply Boards Board Type Ch. Voltage full scale Voltage Resolution Current Full scale Current Resolution Current protection A V 40 mv 200 µa 50 na fixed (1 ma) A V 10 mv 1.5 A 10 ma programmable A V 10 mv 10 ma 10 µa fixed (30 ma) A V 10 mv 150 ma 40 µa fixed (170 ma) A V 40 mv 40 µa 10 na fixed (200 µa) A V 40 mv 1 ma 200 na fixed (1.2 ma) A V 10 mv 3 A 10 ma programmable A V 10 mv 1.2 A 10 ma programmable A V 40 mv 40 µa 10 na fixed (200 µa) A V 10 mv 3 A 10 ma programmable NPO: 00104/97:A526x.MUTx/00 Page 1 of 20

5 High Voltage Positive/Negative Boards (See CAEN's "High Voltage P. S. Boards User's Manual") Board Type Ch. Voltage full scale Voltage Resolution Current Full scale Current Resolution A kv 0.5 V 1 ma 1 µa A733A kv 0.2 V 3 ma 1 µa A kv 0.2 V 3 ma 1 1 µa A kv 0.2 V 13 ma 10 µa A kv 0.5 V 200 µa 20 na A kv 0.2 V 200 µa 20 na Distributor Boards (See CAEN's "Distributor P. S. Boards User's Manual") ( V = 900 Volt) Board Type Ch. Voltage full scale Voltage Resolution Current Full scale A932A kv 200 mv 500 µa A933A kv 200 mv 900 µa A933K kv 200 mv 500 µa A934A kv 200 mv 20 µa Other Board types are under development: High Voltage Positive/Negative Boards (Preliminary Data) Board Type Ch. Voltage full scale Voltage Resolution Current Full scale Current Resolution A833A kv 0.2 V 200 µa 20 na A kv 0.1 V 50 µa 10 na 1 guaranteed on 14 channels only; slightly less on 16 channels. NPO: 00104/97:A526x.MUTx/00 Page 2 of 20

6 2. DEDICATED FLOATING SUPPLY BOARDS 2.1.MOD. A522 DOUBLE FACE SILICON POWER SUPPLY The Mod. A522, DOUBLE FACE SILICON POWER SUPPLY has been designed for the Silicon Vertex detector of the BaBar experiment at SLAC. Each multi-source power supply module has two sets of low voltage supplies collectively referenced above and below ground by a center tapped high voltage supply. The positive HV supply is brought out with the other voltages and called Bias Ring n. The negative HV supply is brought out twice and called Bias Ring p and Edge Guard p. The HV center tap is the supply common (SVT COMMON), isolated from the chassis and brought out on two parallel connectors on the rear panel for tying all the modules together. On either side of the HV supply, the two analog sources are derived from a common transformer winding, but the two digital sources are derived independently using their own transformer windings. Each channel is provided with an adjustment trimmer (MAXV SET) for the maximum output voltage setting (VMAX hardware). The set value can be monitored via front panel test points on dual pins (ECL-like connectors). Moreover, via software it is possible to set for each channel another output voltage maximum limit (VMAX software). The output voltages are programmable from 0 to the maximum value according to the table here below. Table 2.1: A522 Channels Features Name Chann. Number Voltage Voltage Resolution Current Current Resolution Common connection LVDD5p 0 8 volts 10 mv 1000 ma 1 ma with DVDD5p (HVn optional)** AVDD5p 1 8 volts 10 mv 500 ma 0.2 ma with AVDD5p (HVn optional)* AVDD2p 2 5 volts 10 mv 500 ma 0.2 ma with AVDD2p (HVn optional)* DVDD5p 3 8 volts 10 mv 1000 ma 1 ma with LVDD5p (HVn optional)** DVDD5n 4 8 volts 10 mv 1000 ma 1 ma with LVDD5n (HVp optional)* AVDD2n 5 5 volts 10 mv 500 ma 0.2 ma with AVDD2n (HVp optional)* AVDD5n 6 8 volts 10 mv 500 ma 0.2 ma with AVDD5n (HVp optional)* LVDD5n 7 8 volts 10 mv 1000 ma 1 ma with DVDD5n (HVp optional)* HV 8 80 volts 100 mv 1 ma 200 na SVT Common BIASp µa 100 na with -HV (AVDD2p optional) *: These channels are linked via a 10kOHM impedance to HVp, in order to provide a reference even in case of a connection failure. **: These channels are linked via a 10kOHM impedance to HVn, in order to provide a reference even in case of a connection failure. NPO: 00104/97:A526x.MUTx/00 Page 3 of 20

7 The Mod. A522 ISET values represent a "software controlled" hardware protection on the channels' currents: the channel cannot draw a current higher than its programmed limit (Board with programmable current hardware protections). For each board an INTERLOCK connector allows to enable the power generation on the board: a TTL signal in this connector enables the board and a LED placed on the Front Panel of the Board lights up. Power generation can also be enabled via an internal jumper (JP21) MOD. A522 PACKAGING 8 TE wide. Height: 6U MOD. A522 EXTERNAL COMPONENTS CONNECTORS - 1, "OUTPUTS", 50 pin female D type, for the outputs of the Floating channels. - 2, "INTERLOCK", LEMO EPG.OB.302.HLN type, for the enabling of the power generation. - 2, "SVT COMMON", BNC type, for the SVT Common ground. DISPLAYS - 1, "INTERLOCK", green LED, signalling, when lit, that the corresponding INTERLOCK connector has a TTL level as input MOD. A522 INTERNAL COMPONENTS TRIMMERS - 9, "MAXV SET", screwdriver trimmers, for the VMAX hardware setting. NPO: 00104/97:A526x.MUTx/00 Page 4 of 20

8 Table 2.2: A522 Main Board Jumpers Jumper Shipping Conf. Relevant Channel J1 not inserted AVDD5N J2 not inserted LVDD5N J3 not inserted DVDD5N J4 not inserted AVDD2N J6 not inserted AVDD5P J7 not inserted LVDD5P J8 not inserted DVDD5P J9 not inserted AVDD2P J10 not inserted HV CH All jumpers J1 to J10 refer to the selection of the Overvoltage/Overcurrent condition to be used. In particular, if the jumper is not inserted, the overcurrent condition is exactly as described in the SY527 User's Manual. On the contrary, if the jumper is inserted the "Overcurrent" condition can be either a true Overcurrent or an Overvoltage. The User must discriminate the actual condition that has occurred by comparing respectively the IMON with the ISET value (overcurrent) and the VMON and MAXVSET value (overvoltage) according to the flow chart here below. IMON < ISET (for at least 3%) No OVERCURRENT CONDITION Yes VMON=MAXVSET (5% tolerance on MAXVSET) No MALFUNCTIONING BOARD Yes OVERVOLTAGE CONDITION Fig. 2.1: User Operations upon OVC detection NPO: 00104/97:A526x.MUTx/00 Page 5 of 20

9 Table 2.3: A522 Interconnection Board Jumpers Jumper Jumper Function Position (*) J21 closed Enables voltage generation without the need of a TTL level on the INTERLOCK connector J25 left Connects the BIAS Ring N to +HV (CH8) right Connects the BIAS Ring N to AVDD2N (CH5) J28 closed Connects locally the GND of DVDD5N (CH4) to +HV (CH8) J29 closed Connects locally the GND of LVDD5N (CH7) to +HV (CH8) J30 closed Connects locally the GND of AVDD5N (CH6) and AVDD2N (CH5) to +HV (CH8) J31 closed Connects locally the GND of AVDD5P (CH1) and AVDD2P (CH2) to -HV (CH8) J32 closed Connects locally the GND of LVDD5P (CH0) to -HV (CH8) J33 closed Connects locally the GND of DVDD5P (CH3) to -HV (CH8) J34 left Connects the BIAS_Ring_P (CH9) to AVDD2P (CH2) right Connects the BIAS_Ring_P (CH9) to -HV (CH8) J35 left Connects the Edge Guard P to AVDD2P (CH2) right Connects the Edge Guard P to -HV (CH8) J40 see fig. 2.2 Connects the FNGND (Floating Node Ground)** either to COM (Central Tap HV Channel), to EARTH (Mainframe Ground), to DCOM (SVT Common) or to SHIELD (External Cable Shield) J41 closed Connects locally the GND of DVDD5N (CH4) to the GND of LVDD5N (CH7) J42 closed Connects locally the GND of DVDD5P (CH3) to the GND of LVDD5P (CH0) *: referred to the board as seen in Fig **: the Floating Node Ground is the floating node related to the clamping capacitor installed on each supply line. NPO: 00104/97:A526x.MUTx/00 Page 6 of 20

10 J16 C B A C91 C92 C93 R58 R59 J20 K1 + - R61 D39 U20 R60 Q5 Q6 R62 Local Board_Enable J21 J ISO DL1 J23 J17 5VAN J18 +AVDD2N BRNA +HV GND_DVDD5N FL1 +HV GND_LVDD5N FL2 R63 C94 J24 R64 C95 C96 P3 C94 C97 P3 J24 R65 R67 C98 C94 P3 J24 R69 R68 R66 C99 J25 C94 P3 J24 C100 C101 J26 CP1 C102 P4 CP2 J27 DRETN GND _DVDD5N C104 J28 D40 GND_LVDD5N FL2 C106 J41 CP J29 J19 CP4 C107 J30 R71 R70 CP5 ARETN=GND_AVDD5N GND_AVDD2N ARETP=GND_AVDD5P GND_AVDD2P 5VAP R62 Q5 R60 COM GND_LVDD5P FL6 GND_DVDD5P FL5 EARTH DCOM SHIELD D39 R61 ARETN +HV ARETP -HV -HV -HV +AVDD2P BRPO -HV +AVDD2P EGP -HV - K1 CP7 CP6 CP8 C108 J31 CP9 C109 J32 CP C110 D41 J33 DRETP GND_DVDD5P J34 J42 +AVDD2P C112 J40 C94 J24 J35 P3 C94 J24 P3 C94 J24 J36 P3 C94 J24 P3 J37 + Q6 U20 J38 R58 C93 C92 A B C C91 J16 J39 Fig. 2.2: Mod. A522 Interconnection Board Jumpers Location NPO: 00104/97:A526x.MUTx/00 Page 7 of 20

11 MOD. A522 CHANNEL CHARACTERISTICS Polarity: Floating voltages Output Voltage: See Table 2.1 Max. Current: See Table 2.1 Voltage Set/Monitor Resolution: See Table 2.1 Current Set/Monitor Resolution: See Table 2.1 VMAX hardware: 0 full scale settable for each type of channel VMAX software: 0 full scale settable for each type of channel VMAX software resolution: 100 mv for all channels Ramp Down: 1 30 Volt/sec (all Channels) Ramp Up: 1 30 Volt/sec (all Channels) Vmon linearity: 1% ±2 bit (referred to Vset on all range) Imon linearity: 3% ±200 ppm/ C ±2 bit (referred to nominal value) Voltage Ripple: 10 mvpp (differential mode per single output, 10 Hz to 20 MHz) Max. power consumption (per board) 135 W MOD. A522 VMAX HARDWARE SETTING The VMAX hardware value cannot be readout via software, but can be monitored via front panel test points on dual pins (ECL-like connectors). The monitoring on the 5V and 2V channels is performed with a 1:1 ratio, while the HV test points provide a 1: 11 ratio, e.g. if the readout is 3 V the actual HV voltage is 3*11 = 33 V. NPO: 00104/97:A526x.MUTx/00 Page 8 of 20

12 Mod. A522 INTERLOCK INTERLOCK LED HV 2VAN MAXV SET VDN 5VLN + - 5VAN VOLTAGE OUTPUT MAXV TRIMMERS O U T P U T S + - 5VAP MAXV SET VLP 5VDP + - 2VAP SVT COMMON SCALER DOUBLE FACE SILICON PWS Fig. 2.3: Mod. A522 Front Panel NPO: 00104/97:A526x.MUTx/00 Page 9 of 20

13 DVDD5NS+ DVDD5N DVDD5NS- DRETN LVDD5NS+ LVDD5N LVDD5NS- -5LDPN AVDD5NS+ AVDD5N AVDD5NS- ARETN AVDD2NS+ AVDD2N AVDD2NS- ARETN AVDD2PS+ AVDD2P AVDD2PS- ARETP AVDD5PS+ AVDD5P AVDD5PS- ARETP LVDD5PS+ LVDD5P LVDD5PS- -5LDPP DVDD5NS+ DVDD5N DVDD5NS- DRETP SHIELD DVDD5N DRETN +HV -HV EDGE_GUARD_P BIAS_RING_N AVDD2N ARETN AVDD2P ARETP BIAS_RING_P BIAS_RING_N FNGND FNGND DVDD5P DRETP SHIELD Fig. 2.4: Mod. A522 Output Connector NPO: 00104/97:A526x.MUTx/00 Page 10 of 20

14 MOD. A522 SENSE INPUTS All channels (exception made for the HV channel) are provided with two sense inputs (S+ and S-) that allow the User to obtain the correct voltage value at the load to be supplied, regardless of the line loss. Each channel must be connected as shown in the figure below: OUT + Rline/2 S + Rload S - Rline/2 OUT - Fig. 2.5: Channel Connection Diagram In the following figures the maximum Rline as a function of the load current, for different values of Vload, are shown for the 5V and 2V channels. R Line (Ohm) 45,00 40,00 35,00 30,00 25,00 20,00 15,00 10,00 Vload=0.5V Vload=1V Vload=1.5V Vload=2V 5,00 0,00 0,10 0,20 0,30 0,40 0,50 ILoad (A) Fig. 2.6: Mod. A522 Line impedance for the 2V 500 ma channel NPO: 00104/97:A526x.MUTx/00 Page 11 of 20

15 R Line (Ohm) 70,00 60,00 50,00 40,00 30,00 20,00 Vload=1V Vload=2V Vload=3V Vload=4V Vload=5V 10,00 0,00 0,10 0,20 0,30 0,40 0,50 0,60 0,70 0,80 0,90 1,00 ILoad (A) Fig. 2.7: Mod. A522 Line impedance for the 5V 500 ma - 1 A channel NPO: 00104/97:A526x.MUTx/00 Page 12 of 20

16 2.2.MOD. A526 FLOATING CH. BOARD 4/9/98 SY527 BABAR P. S. Boards The Mod. A526, 6 CHANNEL FLOATING Board (6 V-1.5A, 6 V-2.5A and 6 V-4A) houses 6 Floating channels, insulated up to 60 V from the ground of the mainframe; the polarity has to be fixed by the User by wiring the channels according to the detector specifications. Each channel is capable to generate programmable voltage values in a range from 0 to 6V. The maximum output current is respectively 1.5 A (2 ch.), 2.5 A (2 ch.), 4 A (2 ch.). The Mod. A526 ISET values represent a "software controlled" hardware protection on the channels' currents: the channel cannot draw a current higher than its programmed limit (Board with programmable current hardware protections). Each channel is provided with two sense inputs (S+ and S-) to detect the line loss. This allows the User to obtain the desired voltage at the end of the distribution line in case of substantial distance between the unit and the load to be supplied. A 3-position jumper allows to adjust the power consumption for the 1.5A channel. The output voltage is programmable from 0 to the maximum value in 10 mv steps and the maximum output current is programmable from 0 to the maximum in steps of 10 ma. For each channel a LED has been placed on the Front Panel of the Board to signal when the channel is ON. A thermostatic device inhibits the channels' operations when the internal temperature exceeds 55 C. When a channel is OFF (LED off) the two outputs (+ and -) are connected together MOD. A526 PACKAGING 8 TE wide. Height: 6U MOD. A526 EXTERNAL COMPONENTS CONNECTORS - No. 2, 32 pin female, AMP type, for the 6 outputs of the Floating channels and the 6 inputs of the Sense inputs. DISPLAYS - No. 6, "0 5", red LEDs, signalling, when lit, that the corresponding channel is on MOD. A526 INTERNAL COMPONENTS Refer to Fig JUMPERS - No. 18, "J1-J18", to select the desired reference for each channel (see Table 2.4). Located on the PCB placed on the rear of the front panel. - - No. 2, "J1", to adjust the power consumption for the 1.5A channel (see Table 2.5). Located on the main PCB. NPO: 00104/97:A526x.MUTx/00 Page 13 of 20

17 Table 2.4: A526 Board Jumpers Jumper Jumper Function (*) Position J1 closed Connects the DAQ_VDD_0 Negative Output pole to the Common Line Group 0 J2 closed Connects the DAQ_VDD_0 Positive Output pole to the Common Line Group 0 J3 closed Connects the DAQ_VEE_0 Negative Output pole to the Common Line Group 0 J4 closed Connects the DAQ_VEE_0 Positive Output pole to the Common Line Group 0 J5 closed Connects the HDI_VEE_0 Positive Output pole to the Common Line Group 0 J6 closed Connects the HDI_VEE_0 Negative Output pole to the Common Line Group 0 J7 closed Connects the DAQ_VDD_1 Negative Output pole to the Common Line Group 1 J8 closed Connects the DAQ_VDD_1 Positive Output pole to the Common Line Group 1 J9 closed Connects the DAQ_VEE_1 Negative Output pole to the Common Line Group 1 J10 closed Connects the DAQ_VEE_1 Positive Output pole to the Common Line Group 1 J11 closed Connects the HDI_VEE_1 Positive Output pole to the Common Line Group 1 J12 closed Connects the HDI_VEE_1 Negative Output pole to the Common Line Group 1 J13 closed Connects the Common Line Group 1 to the connector shield J14 closed Connects the Common Line Group 0 to the SVT Common J15 closed Connects the Common Line Group 0 to the connector shield J16 closed Connects the Common Line Group 0 to EARTH (Mainframe Ground) J17 closed Connects the Common Line Group 1 to EARTH (Mainframe Ground) J18 closed Connects the Common Line Group 1 to the SVT Common *: the Common Line is a reference line that allows to refer the outputs either to SVT Common, to the cable shield or to the Mainframe Ground (see App. A) NPO: 00104/97:A526x.MUTx/00 Page 14 of 20

18 Group 1 MB01/2 BNC GNDSCH -S1A +S1A -1A +1A SCH +5A -5A SCH -3A Group 0 MB02/2 D1 JP1 JP14 JP2 C1 JP15 R1 C2 JP3 D2 JP4 R2 C4 C3 JP5 JP16 JP6 C6 C5 R3 D3 GND BNC SCH -1A -S1A +S1A +1A SCH +3A SCH SCH -S3A +5A -5A J17 J4R6 D6 JP13 R5 D5 R4 JP18 -S5A +S3A SCH +S5A SCH C12 C11 C10 C9 C8 C7 D4 JP11 JP12 JP9 JP10 JP7 JP8 SCH +3A SCH -S5A -S3A +S5A +S3A SCH SCH -3A SCH Fig. 2.8: Mod. A526 Jumpers Location +6V 1A -6V 5A -6V 3A +S1A -S5A -S3A -6V 1A +6V 5A +6V 3A -S1A +S5A +S3A SHIELD Fig. 2.9: Mod. A526 Front Panel Connector NPO: 00104/97:A526x.MUTx/00 Page 15 of 20

19 Mod. V560E Mod. A526 0 Group 0 Outputs 1 2 SVT COMMON +6V 1A -6V 5A -6V 3A +S1A -S5A -S3A -6V 1A +6V 5A +6V 3A -S1A +S5A +S3A SHIELD 3 Group 1 Outputs 4 5 SCALER 6 CH FLOATING 6.5V 1-3-5A Fig. 2.10: Mod. A526 Front Panel NPO: 00104/97:A526x.MUTx/00 Page 16 of 20

20 MOD. A526 CHANNELS CHARACTERISTICS 4/9/98 SY527 BABAR P. S. Boards Polarity: Floating voltages Output Voltage: 0 6 V Max. Current: 1.5 A (Ch. 0, 3); 2.5 A (Ch. 1, 4); 4 A (Ch. 2, 5) Voltage Set/Monitor Resolution: 10 mv Current Set/Monitor Resolution: 10 ma VMAX hardware: not available VMAX software: 0 6 V settable for each channels VMAX software resolution: 10 mv Ramp Down: 1 10 Volt/sec, 1 Volt/sec step Ramp Up: 1 10 Volt/sec, 1 Volt/sec step Voltage Ripple: 10 mvpp Max. delivered power: 96 W Max. power consumption (per board) 165 W Max. internal temperature protection: fixed (55 C) MOD. A526 SENSE INPUTS All channels (exception made for the HV channel) are provided with two sense inputs (S+ and S-) that allow the User to obtain the correct voltage value at the load to be supplied, regardless of the line loss. Each channel must be connected as shown in the figure below: OUT + Rline/2 S + Rload S - Rline/2 OUT - Fig. 2.11: Channel Connection Diagram NPO: 00104/97:A526x.MUTx/00 Page 17 of 20

21 MOD. A526 J1 SETTING 4/9/98 SY527 BABAR P. S. Boards The 3-position jumpers J1 allows to adjust the power consumption for the channels 2 and 5. The 3-positions are shown in the figure below: J1 CHANNEL5 CHANNEL4 J1 POSITION CHANNEL3 Position 3 Position 2 Position 1 J1 CHANNEL2 CHANNEL1 CHANNEL0 Components side of the board Fig. 2.12: Mod. A526 J1 Jumpers Locations The following table shows the J1 position in function of the Vload, the Iload and the Rline: Table 2.5: Mod. A526 J1 Jumper Position 12.6 V < (Vload + Rline Iload) < 14.4 V Position V < (Vload + Rline Iload) < 12.6 V Position 2 (Vload + Rline Iload) < 6.8 V Position 1 NPO: 00104/97:A526x.MUTx/00 Page 18 of 20

22 In the following figures are shown the maximum Rline as a function of the load current, for different values of Vload (J1 set to Position 1). RLine (Ohm) CHANNELS 0 and 3 (6V 4A) 35,00 30,00 Vload=1V 25,00 20,00 15,00 10,00 Vload=2V Vload=3V Vload=4v Vload=5V Vload=6V 5,00 0,00 I Load (A) RLine (Ohm) CHANNELS 1 and 4 (6V 2.5A) 35,00 30,00 25,00 20,00 15,00 10,00 5,00 Vload=1V Vload=2V Volad=3V Vload=4V Vload=5V Vload=6V 0,00 I Load (A) NPO: 00104/97:A526x.MUTx/00 Page 19 of 20

23 RLine (Ohm) CHANNELS 2 and 5 (6V 1.5A) (as a function of J1 position) 70,00 Vload=1V/J1 60,00 Vload=2V/J1 Vload=3V/J1 Vload=4V/J1 50,00 Vload=5V/J1 Vload=6V/J1 40,00 Vload=1V/J2 Vload=2V/J2 Vload=3V/J2 30,00 Vload=4V/J2 Vload=5V/J2 Vload=6V/J2 20,00 Vload=1V/J3 Vload=2V/J3 10,00 Vload=3V/J3 Vload=4V/J3 Vload=5V/J3 0,00 Vload=6V/J3 0,25 0,50 0,75 1,00 1,25 1,50 I Load (A) This implies that the Rline value must be less than the value showed in the graphics in order to obtain the desired voltage value at the load to be supplied. NPO: 00104/97:A526x.MUTx/00 Page 20 of 20

24 APPENDIX A ELECTRICAL DIAGRAM OF A526 JUMPERS CONNECTION NPO: 00104/97:A526x.MUTx/00 Page A.1