comparison: content/hp3562a.rst
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. |
