Fluke 5700A Series User Manual

Contents
(continued)
iii
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
2-98. Internal CAL Zero Amplifier ....................................................... 2-59
2-99. Switch Matrix 5725A Amplifier Interface ................................... 2-61
2-100. DAC Assembly (A11) ...................................................................... 2-61
2-101. Basic DAC Theory of Operation.................................................. 2-61
2-102. DAC Assembly Digital Control ................................................... 2-64
2-103. DAC Assembly Reference Circuitry............................................ 2-64
2-104. Duty-Cycle Control Circuit.......................................................... 2-65
2-105. DAC Filter Circuit........................................................................ 2-66
2-106. DAC Output Stage ....................................................................... 2-66
2-107. Sense Current Cancellation Circuit.............................................. 2-67
2-108. Linearity Control Circuit.............................................................. 2-67
2-109. Negative Offset Circuit ................................................................ 2-68
2-110. DAC Output Switching................................................................ 2-68

Fluke 5700A Series Specifications

General

Type	Multifunction Calibrator
Operating Temperature	0°C to 50°C
Storage Temperature	-40°C to 70°C
Humidity	10% to 90% non-condensing
Frequency Range	10 Hz to 1 MHz
Accuracy	Varies by function and range. See manufacturer's specifications for details.
Output Stability	Varies by function and range. See manufacturer's specifications for details.
Power Requirements	50 Hz to 60 Hz