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Содержание DRC-80C

Страница 1: ...erutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In st...

Страница 2: ...243 Methods and apparatus disclosed and described herein have been developed solely on company funds of Lake Shore Cryotronics Inc No government or other contractual support or relationship whatsoever...

Страница 3: ...te P a r a l l e l BCD Input Output Option 3 9 1 General IEEE Specifications and Operation 3 9 2 Specific Operation of t h e DRC8 IEEE I n t e r f a c e 3 9 3 Sample Programming 3 10 3 11 3 12 Rack Mo...

Страница 4: ...ources 5 4 2 A D Converter 5 4 3 D A Converter 5 4 4 Output Buffer 5 4 5 DRC L A Option ifpresent 5 5 Instrument T e s t s V I Replaceable P a r t s L i s t 6 1 Main Board Components 6 2 DRC 84C BCD L...

Страница 5: ...e C h a r a c t e r i s t i c Model DRC 84C showing Rack Mount K i t SW 1OA Connector Detail BCD Temperature Output Model DRC Series D I N Standard Curve f o r Platinum Sensors DRC 84C Block Diagram S...

Страница 6: ...10A 10 Sensor Selector Switch for use with DRC Thermometer or Controller Pushbutton selection Input Resistance Greater than 1000 megohms Maxi of any one of up to 10 sensors Connects to Sensor B positi...

Страница 7: ...FIGURE 1 1 Model DRC 84C Digital Cryogenic Thermometer Controller vi Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 8: ...tilizes two temperature sensor technologies to achieve its wide range Silicon diodes for the low range 1 4 330K and platinum RTD s for higher temperatures 30 800K Each sensor type has its own input se...

Страница 9: ...have diode sensors installed only when the system is operated below room temperature Special software limits and error codes are generated if the instrument is set to control a point above or below t...

Страница 10: ...a t Helium and Nitrogen temperatures and t o 1 0K a t room temperature 1 3 Major Assemblies Supplied These s t r a i g h t l i n e segments The DRC 84C includes a s standard equipment i n a d d i t i...

Страница 11: ...cate with which sensor the instrument is compatible C Remove the top of your instrument and observe the indicator on the curve PROM D The fourth way is to measure the diode voltage at 4 2K and give th...

Страница 12: ...s warranty is given on the title page 2 3 Power Requirements Before connecting the power cable to line voltage insure that the instru ment is of the proper line voltage and fused accordingly The line...

Страница 13: ...inum resistor the buffered output voltage is 20 times the actual sensor voltage For example if the input voltage from the platinum sensor is 0 0100V then the buffered output voltage would be 0 2000V 2...

Страница 14: ...FIGURE 2 1 Sensor Cable and Monitor Connections 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 15: ...2 3 4 5 NAME POWER NO LABEL Gain Reset NO LABEL FUNCTION A C line switch ON OFF Display serves as indicator light Digital set point Has 0 1 K resolution Variable gain allows adjustment of overall con...

Страница 16: ...This Page Intentionally Left Blank Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 17: ...e n s o r is a l s o i n d i c a t e d on d i s p l a y p a n e l With b u t t o n o u t t h e s i l i c o n d i o d e i n p u t s are s e l e c t a b l e w i t h b u t t o n i n d e t e n t p o s i...

Страница 18: ...FIGURE 3 1 DRC 84C Front Panel FIGURE 3 2 DRC 84C Back Panel 11 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 19: ...tes typical values expected of the standard DT 500 DRC or DT 500CU DRC 36sensors for your appropriate curve The DIN standard curve for the platinum sensors is given in Table 3 7 If the instrument or s...

Страница 20: ...H I power setting to reduce the gain slightly to compensate for the increased overall loop gain 3 5 Analog Output of Temperature The analog output of temperature takes the display temperature and con...

Страница 21: ...llows the user to enable the remote set point by setting Pin 38 J4 high see Table 3 6 If the option was installed prior to shipment these jumpers have already been cut Options that are field installed...

Страница 22: ...strument is 10 to 1000 with the front panel potentiometer covering a 100 1 span The relative gain is the gain factor above which the base instrument has incorporated These relative gains can be multip...

Страница 23: ...with all lines low and maximum reset value with all lines high Table 3 3 Reset Time Constants for BCD Option RESET Pin Pin Pin Pin 41 45 43 41 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0...

Страница 24: ...12 0 13 0 14 0 15 0 16 0 17 0 18 0 2 5984 2 5958 2 5932 2 5906 2 5880 2 5854 2 5828 2 5735 2 5643 2 5551 2 5458 2 5366 2 5226 2 5086 2 4946 2 4807 2 4667 2 4527 2 4387 2 4247 2 4108 2 3968 2 3618 2 32...

Страница 25: ...0 115 0 120 0 125 0 130 0 135 0 140 0 145 0 150 0 155 0 1 4932 1 4219 1 3505 1 3006 1 2507 1 2114 1 1720 1 1486 1 1308 1 1190 1 1116 1 1058 1 0970 1 0902 1 0850 1 0798 1 0746 1 0633 1 0520 1 0407 1 02...

Страница 26: ...0 0 355 0 360 0 365 0 370 0 375 0 380 0 0 76338 0 74961 0 73582 0 72170 0 70757 0 69344 0 67931 0 66518 0 65105 0 63693 0 62280 0 60867 0 59455 0 58080 0 56707 0 55334 0 53960 0 52649 0 51337 0 50026...

Страница 27: ...a b l e 3 5 SW 10A CONNECTOR DETAIL A 1 1 A 11 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 10 10 10 1 2 A B 3 C D 4 E F 5 H J 6 K L 7 M N 8 P R 9 S T 10 U V 11 1 7 18 12 20 Artisan Technolo...

Страница 28: ...8 2 7 4 29 2 31 1 2 1 4 2 6 4 8 8 10 1 12 2 14 4 16 8 18 10 20 20 22 40 24 80 26 100 28 200 30 SW B0 32 SW B1 33 Data Valid 35 Trend B i t 1 01 0 1 37 5w b3 39 Not used 41 BO Reset 43 B1 Reset 45 B2 R...

Страница 29: ...0 150 0 155 0 160 0 165 0 170 0 175 0 180 0 3 82000 4 23481 4 68000 5 14601 5 65000 6 1 7 0 0 0 6 72621 7 31000 7 90899 8 57000 9 24000 9 92364 10 66000 11 41000 12 17995 12 99000 15 01541 17 11000 1...

Страница 30: ...0 375 0 380 0 65 00000 67 01000 69 02000 71 03000 73 03000 75 04385 77 02000 79 00000 80 98000 82 96000 84 94000 86 92000 88 90000 90 88000 92 86000 94 83000 96 80000 98 78433 100 72000 102 67000 104...

Страница 31: ...580 0 142 98000 144 87000 146 76000 148 65215 150 51000 152 39000 154 26000 156 14000 158 01000 159 87000 161 73000 163 59000 165 46573 167 30000 169 15000 171 00000 172 84000 174 68000 176 52000 178...

Страница 32: ...0 216 25553 218 01000 219 78000 221 55000 223 31000 225 07000 226 83000 228 59000 230 34000 232 10593 233 84000 235 57000 237 31000 239 06000 240 79000 242 52000 244 25000 245 97000 247 71350 249 4200...

Страница 33: ...contained on t h e bus A 8 Data Lines B C 3 Byte Transfer Control Lines 5 General I n t e r f a c e Management Lines The d a t a l i n e s c o n s i s t of 8 s i g n a l l i n e s t h a t c a r r y d...

Страница 34: ...i g n i f i c a n t b i t A s a n example w i t h switches 5 6 and 7 ON and switches 4 and 8 OFF t h e address s e l e c t e d is 14 or E base 16 P o s i t i o n 3 of t h e switch package is t h e TA...

Страница 35: ...r an input from the DRC8 IEEE i n t e r f a c e f i v e string v a r i a b l e s must be used or read i n t o t h e computer o r t h e i n t e r f a c e w i l l hang up waiting t o output a l l of t...

Страница 36: ...1 Button I n B d B i t 7 Display Sensor 0 Button Out A 1 Button I n B e B i t 8 Scale EXPAND Mode 0 Button Out normal 1 Button I n Expanded Scale NOTE The expanded scale b i t is set only i f t h e b...

Страница 37: ...CR 1A0 LF CR 130 0 LF CR 0024 06 LF CR EOI SET ON FINAL CR When t h e r e i s a display e r r o r message t h i s message i s transmitted over t h e bus i n t h e temperature variable The following t...

Страница 38: ...0 0B9C5D A is the set point code 130 0 f i v e c h a r a c t e r s t o represent t h e set point 130 0K B is t h e gain code 9 is t h e s e t t i n g f o r r e s i s t o r s 1001 C i s the reset code...

Страница 39: ...u r n f o r a new input 10 INPUT ENTER A 20 OPEN1 6 30 PRINT 1 A CHR 13 40 CLOSE1 50 OPEN2 6 60 INPUT 2 G R P S T 70 CLOSE2 80 PRINT 90 PRINT 100 PRINT GAIN G 1 1 0PRINT RESET R 120 PRINT PANEL P 130...

Страница 40: ...t o A and toggle the f l a g t o external control type i n A130B5CAD and press the CONT key The display w i l l then return those values j u s t set i n and return f o r a new input 10 DIMG SI R 5 P 5...

Страница 41: ...e is typed P r e s s t h e RUN key The display w i l l read ENTER To set the set point t o 130 0 t h e remote gain value t o 5 the remote reset value t o A and toggle t h e f l a g t o e x t e r n a l...

Страница 42: ...3 11 I n s t a l l a t i o n of DRC IEEE Option Board The i n s t a l l a t i o n of t h e DRC IEEE option board can be done as follows 1 Remove instrument cover 2 3 I n s t a l l 14 p i n header i n...

Страница 43: ...t h e platinum sensor This is an inaccurate region of t h e platinum curve The i n s t r u ment w i l l continue t o look f o r a set point above 20 0K and w i l l n o t update t h e temp e r a t u r...

Страница 44: ...ted to a digital voltage signal proportional to the sensor voltage The multiplexed BCD outputs from the A D are sampled and verified by the microprocessor The microprocessor executes a program which t...

Страница 45: ...FIGURE 4 1 DRC 84C Block Diagram 38 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 46: ...obtained through C1 C6 and the positive 15 volt regulator U1 This supply is used to power the constant current sources for diodes in the case of the DRC 80C and both diodes and platinum sensors in th...

Страница 47: ...isplay sensor This switch takes the appropriate sensor voltage and feeds it to the A D converter as well as informing the microprocessor of its position Switch S8 selects which switch is the control s...

Страница 48: ...e output etc The remaining two ports Ports 1 and 4 are used for option access IEEE 488 The CPU uses one of its I O ports to control Tri State 8 line to 4 line multiplexers 74LS257 controlled by a deco...

Страница 49: ...K If there is no LO 1 error condition in the case of the platinum sensor the temperature is output in a bit parallel digit serial form and is latched into the display board Once the temperature has be...

Страница 50: ...FIGURE 4 2 DRC 84C Software Flow Diagram 43 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 51: ...n trol potentiometer on the front panel I n order to understand the analog control circuitry three dif ferent cases should be discussed The examples will be covered for the diode The examples can be a...

Страница 52: ...s this output at about 0 4 volts The available power to the heater is generated by a power supply that consists of transformer TX2 full wave bridge rectifier CR15 18 and a capacitor C45 This transform...

Страница 53: ...This Page Intentionally Left Blank Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 54: ...eater and sensor leads that induce electrical feedback in addition to thermal feedback If the malfunction points toward the instrument more detailed tests should be made 5 4 Instrument Calibration The...

Страница 55: ...A A variable 200K resistor hooked up as in Fig 2 1 a or precision vol tage source in place of the diode are ideal ways to generate this voltage If a resistor is used it should be varied until one of t...

Страница 56: ...and E as well as for the DIN standard curve for the platinum input Table 5 2 Curve D T Set Point Data Pin 1 4 5 8 9 12 13 16 004 0 1011 1111 0010 0100 022 0 1010 0001 0100 1001 130 0 1001 0101 1010 10...

Страница 57: ...from the sticker on PROM U20 The curve is denoted in parenthesis A temperature is dialed in to give a fairly low voltage reading for example 330 0K The voltage read on the voltmeter should be 29111 V...

Страница 58: ...lay e g 22 0 K adjust the offset adjustment potentiometer R89 see Figure 6 9 DRC 80C BCD L A Option Component Layout until the output corresponds to 1 0 mV K Then take the display to a higher tempera...

Страница 59: ...f not present check U32 Also check resistance s t r i n g R36 39 f o r proper value and operation The d i g i t d r i v e s Pins 19 24 25 26 and 27 are p o s i t i v e going pulses and last f o r 200...

Страница 60: ...h time check U41 U42 and U43 If there are problems with the output circuit U44 and U45 should be checked for proper operation If they appear to operate properly check the supply voltage present at the...

Страница 61: ...This Page Intentionally Left Blank Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 62: ...v Poly 0015 f 100v Mylar 150 pf 500V Mica D 0015 f 100v Mylar 150 p f 500V Mica D 0015 f 100v Mylar 150 p f 500V Mica D Not used 33 f 100v Mylar 68 f 100v Poly 68 f 100v Poly 68 f 100v Poly 68 f 100v...

Страница 63: ...ding Post E F Johnson Heater V Out 111 0103 001 Black Binding Post E F Johnson Heater GND 111 0103 001 10 Contact PC Mount AMP MODII 3 86018 5 Display Board mates to JG 10 Contact PC Mount AMP MODII 3...

Страница 64: ...on IN4006 Silicon IN4006 Silicon IN4006 Silicon MR501 Silicon MR501 Silicon MR501 Silicon IN743 Silicon IN743 Not Used Silicon IN4148 Silicon IN459 Silicon IN459 Silicon MR501 Silicon MR501 Silicon MR...

Страница 65: ...Low Power Indicator Pilot Light Indicator Hewlett Packard 8052 7656 Pilot Light Indicator Hewlett Packard 5082 4494 Pilot Light Indicator Hewlett Packard 8052 4494 INTEGRATED CIRCUITS 15V Positive Vol...

Страница 66: ...ri State Quad 2 data 74LS257 Selectors Multiplexers Tri State Quad 2 data 74LS257 Selectors Multiplexers Tri State Quad 2 data 74LS257 Selectors Multiplexers Decoder Multiplexer 74LS139 A D Converter...

Страница 67: ...6 CEE Color Coded 230V Belden 17740C Strain Relief H H Smith 939 Heat Sink for U 4 Aavid 5772B RESISTORS R1 3 74K 1 w Mt F R2 20K 1 w Mt F R3 5K Trimpot Bournes 3059Y 1 502 R4 20K 1 w Mt F R5 5K Trimp...

Страница 68: ...R30 121K 1 w Mt F R31 301K 1 w Mt F R33 121K 1 w Mt F R34 1OK 1 w Mt F R35 33 2K 1 w Mt F R36 107 ohm R37 196 ohm R38 5K A D Adjust Bournes 30594 1 502 R39 1 18K 1 w Mt F R40 511K 1 w Mt F R41 50K Tri...

Страница 69: ...75 976K 1 w Mt F Mt F R74 1K 1 w Mt F R76 976K 1 w SWITCHES s1 ON OFF Switch Centralab s2 115 230 Line Switch Switchcraft s3 Reset ON Switch Allen Bradley s4 Reset Remote Switch Allen Bradley s5 Gain...

Страница 70: ...ca D CONNECTORS 54 BCD option 50 pin Connector T B Ansley 609 5016 Mates with T B Ansley 609 5030 54 IEEE option 24 pin Connector AMP 552791 1 Mates with IEEE cable connector JD IEEE option S N 4136 1...

Страница 71: ...61 Operational Amplifier 0P07EJ U62 16 Bit D A Converter HP16 DGC U63 Dual 4 input Positive NAND 7420 with clear Gates u200 Peripheral Input Output MK3871 Circuit P10 u201 General Purpose Interface MC...

Страница 72: ...Mt F R84 562 ohm 1 kw Mt F R85 9 76K 1 kw Mt F R86 2 OM 1 kw Mt F R87 511K 1 kw Mt F R88 50K trimpot L A Gain Adjust Bournes 3006P R89 50K trimpot L A Offset Bournes 3006P 1 503 Adjust 1 503 R200 4 7K...

Страница 73: ...This Page Intentionally Left Blank Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 74: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 75: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 76: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 77: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 78: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 79: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 80: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 81: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 82: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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