content/hp3562a.rst

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26 Quick tour 26 Quick tour
27 ========== 27 ==========
28 28
29 Here is the beast: 29 Here is the beast:
30 30
31 .. image:: {filename}images/hp3562a/front.jpg 31 .. image:: {static}images/hp3562a/front.jpg
32 32
33 I said the beast, because despite being an amazing piece of test 33 I said the beast, because despite being an amazing piece of test
34 equipment, it's also very big (576mm x 426mm x 222mm), very heavy 34 equipment, it's also very big (576mm x 426mm x 222mm), very heavy
35 (26kg) and... unfortunately quite loud. 35 (26kg) and... unfortunately quite loud.
36 36
44 44
45 Since it was on my "bench", I decided to see a bit inside, using the 45 Since it was on my "bench", I decided to see a bit inside, using the
46 occasion to investigate and fix the only real problem I have (as far 46 occasion to investigate and fix the only real problem I have (as far
47 as I know) with my device: the dimm display. 47 as I know) with my device: the dimm display.
48 48
49 .. image:: {filename}images/hp3562a/front_open.jpg 49 .. image:: {static}images/hp3562a/front_open.jpg
50 50
51 The unit consist in mostly 4 parts: 51 The unit consist in mostly 4 parts:
52 52
53 - a big switching power supply (with huge capacitors) on the left side 53 - a big switching power supply (with huge capacitors) on the left side
54 of the enclosure, under the display, 54 of the enclosure, under the display,
61 - the analog section consisting in 6 boards (front right). 61 - the analog section consisting in 6 boards (front right).
62 62
63 63
64 The general block diagram: 64 The general block diagram:
65 65
66 .. image:: {filename}images/hp3562a/hp3562a_block_diagram_new.png 66 .. image:: {static}images/hp3562a/hp3562a_block_diagram_new.png
67 :alt: General block diagram of the HP3562A 67 :alt: General block diagram of the HP3562A
68 68
69 The instrument is built around 2 buses: 69 The instrument is built around 2 buses:
70 70
71 - the control bus which allows the main CPU to control all the 71 - the control bus which allows the main CPU to control all the
81 processing of the instrument. 81 processing of the instrument.
82 82
83 For the record, the block diagram from Service Manual 03562-90219 83 For the record, the block diagram from Service Manual 03562-90219
84 looks like: 84 looks like:
85 85
86 .. image:: {filename}images/hp3562a/block_diagram.png 86 .. image:: {static}images/hp3562a/block_diagram.png
87 :alt: General block diagram of the HP3562A from earliest Service Manual 87 :alt: General block diagram of the HP3562A from earliest Service Manual
88 88
89 89
90 Power Supply 90 Power Supply
91 ============ 91 ============
92 92
93 .. image:: {filename}images/hp3562a/hp3562a_a18_psu_block_diagram.png 93 .. image:: {static}images/hp3562a/hp3562a_a18_psu_block_diagram.png
94 :alt: Block diagram of the switching power supply unit 94 :alt: Block diagram of the switching power supply unit
95 95
96 96
97 .. image:: {filename}images/hp3562a/a18_psu.jpg 97 .. image:: {static}images/hp3562a/a18_psu.jpg
98 98
99 The primary capacitors are huge Sprague caps (1400µF 250V): 99 The primary capacitors are huge Sprague caps (1400µF 250V):
100 100
101 .. image:: {filename}images/hp3562a/caps.jpg 101 .. image:: {static}images/hp3562a/caps.jpg
102 102
103 The power line filter is also pretty impressive: 103 The power line filter is also pretty impressive:
104 104
105 .. image:: {filename}images/hp3562a/filter.jpg 105 .. image:: {static}images/hp3562a/filter.jpg
106 106
107 The PSU generates: 107 The PSU generates:
108 108
109 - 5V @30A (!) 109 - 5V @30A (!)
110 110
122 122
123 123
124 Next 124 Next
125 ==== 125 ====
126 126
127 In the `next part <{filename}hp3562a_2.rst>`_, we will describe the 127 In the `next part <{static}hp3562a_2.rst>`_, we will describe the
128 Digital Section of the instrument. 128 Digital Section of the instrument.

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