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EAI 40.488, Manual

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Summary of Contents for 40.488

Page 1: ...AI LECTRONIC ASSOCIATES INC Long Branch New Jerst ELECTRONIC COMPARATOR MODEL 40 488 for use with TR 48 ANALOG COMPUTER ELECTRONIC ASSOCIATES INC 196 ALL RIGHTS RESERVED PRIN TED IN U S A January 1964...

Page 2: ...n will facilitate the processing of your requests and aid in assuring that the correct items are supplied It is the policy of Electronic Associates Inc to supply equipment patterned as closely as poss...

Page 3: ...ssels Telephone Brussels 18 40 04 Telex 2 21 106 UK SCANDINAVIAN REGIONAL OFFICE Electronic Associates Ltd Burgess Hill Sussex England Telephone Burgess Hill Sussex 5101 5 Cable LONPACE Telex 87183 Be...

Page 4: ...1 APPENDIX III SERVICING TECHNIQUES Figure Number 1 2 3 4 5 6 7 8 9 10 11 ILLUSTRATIONS Title Electronic Comparator 40 488 Comparator Mode Electronic Selector SUJitch Mode Track Hold Mode Analog Compa...

Page 5: ......

Page 6: ...polarity of the sum of the inputs The sum of the analog inputs is first digitized then these digital signals are connected to the control inputs of two electronic switches External digital signals ma...

Page 7: ...me 5 0 Microseconds Typical See Notes 1 and 2 Analog Input Range 10 Volts to 10 Volts Latch Input Impedance 100 000 Ohms Minimum Digital Output Levels Binary ONE 00 5 0 VDC Nominal Binary ZERO 0 0 VDC...

Page 8: ...microseconds even though the propagation time of each is 5 0 and 1 0 microseconds respectively Binary ONE 0 5 aVDC Nominal Binary ZERO O 0 VDC Nominal Control Input Impedance 100 000 Ohms Minimum Sign...

Page 9: ...PUT B NARY I Figure 2 Comparator Mode 3 OPERATION The mode of operation of the Electronic Comparator 40 488 is completely controlled by pre liminary patching connections The patching connections for a...

Page 10: ...IT NOTES I WHEN 0 IS BINARY I eo f 2 WHEN 0 IS BINARY 0 eo e2 Figure 3 Electronic Selector Switch Mode 2K SWI SW2 C b EQUIVALENT CIRCUIT NOTES DUAL DC AMPL 6 614 a PATCHING ELEC COMP 40 488 Figure 4 T...

Page 11: ...n in block diagram form in Figure 6 The complementary control inputs D D may be applied from the 1 and 0 outputs of a comparator or external digital equipment When D is a binary ONE and 15 is a binary...

Page 12: ...EL 40 488 10K Figure 6 10K B ELECTRONIC SWITCH ELECTRONIC SWITCH 10K Electronic Selector Switch Block Diagram K ELECTRONIC SWITCH C 0 254f REAL TIME SCALE 0 0054f FAST TIME SCALE C Figure 7 Track Hold...

Page 13: ...stage In this state signals from the dc amplifier are blocked from the flip flop Q3 Q4 The outputs remain in their present state due to the bias arrangement of R5 R7 R9 and Rl1 If a binary ZERO is app...

Page 14: ...ONE 2 IF EI E2 IS MINUS OUTPUT IS BINARY ZERO CRI CR2 UNLATCH LATCH R6 l aK R4 1 5K R9 15K R5 270K 5 0V RIO RI 56K 15V 15V RII R2 5 6K R7 15K 15V ELEC TRONIC COMPARATOR MODEL 40 488 RI2 l aK H OUTPUT...

Page 15: ...15V RI8 IK RI6 lOOK RI7 3 9K CR7 2 0V R20 IK 15V 2 0V CR6 RI5 IK RI4 10K I 2 0V IN R30 IK R22 10K R28 IK 10 IOV R26 R27 9K R29 9K IOV ELECTRONIC COMPARATOR MODEL 40 488 R24 10K Figure 9 Electronic Sw...

Page 16: ...ection in the TH area This relay connects 2K input and feed back resistors in the loop instead of the 10K resistors The input resistor is paralleled with a lead network C14 R33 to reduce phase shift T...

Page 17: ...MEG 10K Figure 10 Gate Output Offset Test Circuit a Gate Output Offset 1 Connect the circuit shown in Figure 10 with the function switch set to the down position 2 Set the voltmeter to the 1 0 volt ra...

Page 18: ...Gate Junction Offset Test Circuit b Gate Function Offset 1 Connect the circuit shown in Figure 11 with the function switch set to the down position 2 Set the voltmeter to the 1 0 volt range and balanc...

Page 19: ......

Page 20: ...components in category B are items that can be obtained from EAI or any of the listed manufacturers However in most cases EAI is in a position to offer the most rapid ser vice on items in this catego...

Page 21: ...RATOR Index Model Number Component Page 1 40 488 ELECTRONIC COMPARATOR eoo o oooooo oooo 20 120959 RELAY NETWORK CARD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 AI 3 3 40 493 ELECTRONIC COMPARATOR CARD 0 0 0 0 0 0...

Page 22: ...1 Julie Research Labs Resistor Fixed Wirewound recision Matched Pair per EAI Specifications 2000 ohms 1 Julie Research Labs Resistor Fixed Composition 309K ohms 10 1 4W Allen Bradley CB NOTEI THE CATE...

Page 23: ...neral Electric NPN 2N27l4 Transistor Germaniurn NPN Texas Instruments 2N1304 Transistor Germanium NPN Texas Instruments 2N797 Transistor Si1icon PNP Philco 2N2276 Transistor Si1icon NPN Motorola SMl13...

Page 24: ...n 8980 ohms O 05 Resistance Products Co PB Type 31 R27 Resistor Variable Wirewound 50 ohms 5 lW Daystrom Pacific 25500 32 R29 Resistor Fixed Wirewound Precision 9000 ohms 0 05 Resistance Products Co P...

Page 25: ...nt the type of drawings and the associated drawing number The drawings are bound into the manual in the order listed unaer the index Drawing Number column EAI drawings are prepared in accordance with...

Page 26: ...KI I c B K L I E5 1 I 1 I Re4 1 J I Cl Z 8 2 C7 C8 Cf4 I CI4 1 _ _ 12 959 Relay Network Component Location Diagram...

Page 27: ...642 043 O b ALL RESISTORS ARE IO 1 4 W c ALL CAPACITORS ARE IO r I 1 I I I I I I I L I I I I I I I ___ J I I I I I I I I CIRCUIT IDENTICAL TO ONE SHOWN BELOW ENCLOSED IN DOTIED LINES EXCEPT COMPONENT...

Page 28: ...GAr He CRI5 GATE CR rz 40 493 Electronic Comparator Card Component Location Diagram A...

Page 29: ...eM qeM PC2 3 qy GY PCI 1 qv PCI K2 4 y PCI t ELECTRONIC ASSOCIATES INC LONG BRANCH NEW JERSEY wlehvq ELECr COMPReRTO SHT NO I I I I r I I I I SIZE I I I II I TIT REV NO I I I I I I I II PROJECT CO O 4...

Page 30: ...cases where this is impossible due to extremely short or hidden leads the component itself must be carefully grasped While applying pressure to the lead touch a well tinned small 40 watt or less sold...

Page 31: ...damage to it from overheating Always use a small well tinned soldering iron and work as quickly as possible Transistors and small diodes which are soldered directly to the board should be removed only...

Page 32: ...low dc scale 4 TRANSISTOR TROUBLESHOOTING As with any other type of electronic circuit the first step in troubleshooting transisor circuits is a visual inspection for charred discolored or leaky comp...

Page 33: ...ay be checked using the following procedures a Set the ohmmeter to a high range and connect it between the base and the collector leads reverse the leads and note which connection caused the higher re...

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