Fluke 5720A service manual 2-36

5700A/5720A Series II Calibrator

Service Manual

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
2-49.	Decoding and Timing Circuitry	2-28
2-50.	Control Display Circuitry	2-29
2-51.	Output Display Circuitry	2-30
2-52.	Keyboard Scanner Circuitry	2-31
2-53.	Knob Encoder Circuitry	2-31
2-54.	Led Circuitry	2-32
2-55.	Keyboard Assembly (A1)	2-32
2-56. Analog Section Detailed Circuit Description		2-33
2-57.	Filter/PA Supply (A18), Low-voltage Filter/Regulator Section	2-33
2-58.	Unregulated OSC Supplies	2-34
2-59.	Unregulated LH Supplies	2-34
2-60.	Unregulated S Supplies	2-34
2-61.	Triac Circuit	2-34
2-62.	FR1 Supplies	2-34
2-63.	Unregulated FR1 Supply	2-34
2-64.	FR2 Supplies	2-35
2-65.	Filter/PA Supply (A18), Power Amplifier Output Supply Section .	2-35
2-66.	±PA Supplies Digital Control	2-35
2-67.	±250V and ±500V Supplies	2-37
2-68.	+PA and -PA Supplies	2-37
2-69.	±PA Supply Current Limit	2-37
2-70.	Regulator/Guard Crossing Assembly (A17)	2-38
2-71.	Voltage Regulator Circuitry	2-38
2-72.	Regulated OSC Supplies	2-38
2-73.	Regulated LH Supplies	2-39
2-74.	Regulated S Supplies	2-39
2-75.	FR1 Supply	2-40
2-76.	FR2 Supply	2-40
2-77.	Guarded Digital Control Circuitry	2-41
2-87.	Switch Matrix Assembly (A8)	2-43
2-88.	Switch Matrix Digital Control	2-44
2-89.	Switch Matrix Operation: 11V DC and 22V DC Ranges	2-46
2-90.	Switch Matrix Operation: 2.2V AC and 22V AC Ranges	2-48
2-91.	Switch Matrix Operation: 220V AC and DC Ranges	2-48
2-92.	Switch Matrix Operation: 2.2V DC Range	2-51
2-93.	Calibration of the 2.2V Range	2-53
2-94.	Switch Matrix Operation: 220 mV DC Range	2-53
2-95.	Switch Matrix Operation: 220 mV AC Range	2-56
2-96.	Switch Matrix Operation: 2.2 mV and 22 mV AC Ranges	2-56
2-97.	Calibration of the mV Ranges	2-56

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