Fluke service manual 5700A/5720A Series, Theory of Operation

5700A/5720A Series II

Service Manual

	1-34.	General Specifications	1-36
	1-35.	Auxiliary Amplifier Specifications	1-37
2	Theory of Operation		2-1
	2-1.	Introduction	2-5
	2-2.	Calibrator Overview	2-5
	2-3.	Internal References	2-5
	2-4.	Hybrid Reference Amplifiers	2-5
	2-5.	Fluke Thermal Sensor (FTS)	2-5
	2-6.	Digital-to-Analog Converter (DAC)	2-6
	2-7.	Digital Section Overview	2-6
	2-8.	Analog Section Overview	2-6
	2-9.	Functional Description Presented by Output Function	2-8
	2-10.	DC Voltage Functional Description	2-8
	2-11.	AC Voltage Functional Description	2-11
	2-12.	Wideband AC V Functional Description (Option -03)	2-12
	2-13.	DC Current Functional Description	2-12
	2-14.	AC Current Functional Description	2-12
	2-15.	Ohms Functional Description	2-13
	2-16.	System Interconnect Detailed Circuit Description	2-13
	2-17.	Digital Motherboard Assembly (A4)	2-13
	2-18.	Transformer Assembly (A22)	2-14
	2-19.	Analog Motherboard Assembly (A3)	2-14
	2-20.	Front/Rear Binding Posts	2-18
	2-21.	Rear Panel Assembly (A21)	2-18
	2-22.	Filter PA Supply Assembly (A18)	2-18
	2-23.	Digital Section Detailed Circuit Description	2-18
	2-24.	Digital Power Supply Assembly (A19)	2-18
	2-25.	+5V Power Supply	2-19
	2-26.	±12V Power Supplies	2-19
	2-27.	+35V Power Supply	2-19
	2-28.	+75V Power Supply	2-20
	2-29.	+35V and +75V Shut-Down Circuit	2-20
	2-30.	CPU (Central Processing Unit) Assembly (A20)	2-21
	2-31.	Power-Up and Reset Circuit	2-21
	2-32.	Clock Generation	2-21
	2-33.	Watchdog Timer	2-24
	2-34.	Address Decoding and DTACK (Data Acknowledge)	2-24
	2-35.	Interrupt Controller	2-25
	2-36.	Glue Logic	2-25
	2-37.	RAM (Random-Access Memory)	2-25
	2-38.	ROM (Read-Only Memory)	2-25
	2-39.	Electrically-Erasable Programmable Read-Only Memory
		(EEPROM)	2-26
	2-40.	DUART (Dual Universal Asynchronous Receiver/transmitter)
		Circuit	2-26
	2-41.	Clock/Calendar Circuit	2-26
	2-42.	Clock Filter Circuit	2-27
	2-43.	CPU to Rear Panel Interface	2-27
	2-44.	CPU to Front Panel Interface	2-27
	2-45.	Fan Monitor	2-27
	2-46.	Front Panel Assembly (A2)	2-28
	2-47.	Clock Regeneration Circuitry	2-28
	2-48.	Refresh Failure Detect Circuitry	2-28

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