comparison: content/hp3562a_4.rst
content/hp3562a_4.rst
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| 20 The display unit is a HP1345A Digital Display without the option 714 | 20 The display unit is a HP1345A Digital Display without the option 714 |
| 21 (wich adds a 4K x 16 bits Vector Memory), so it must driven by a | 21 (wich adds a 4K x 16 bits Vector Memory), so it must driven by a |
| 22 dedicated display controller (which is on the A38 memory board): | 22 dedicated display controller (which is on the A38 memory board): |
| 23 | 23 |
| 24 .. image:: {static}/images/hp3562a/a8_a17_display.png | 24 .. image:: {static}/images/hp3562a/a8_a17_display.png |
| 25 :alt: Block diagrams of the HP1345A A8 and A17 boards | |
| 25 | 26 |
| 26 The unit is a 6 inch monochrome display producing true vector graphics | 27 The unit is a 6 inch monochrome display producing true vector graphics |
| 27 with a resolution of 2048x2018 points. It can display up to 3226 | 28 with a resolution of 2048x2018 points. It can display up to 3226 |
| 28 inches of vectors at 60Hz. It also embeds a character generator. | 29 inches of vectors at 60Hz. It also embeds a character generator. |
| 29 | 30 |
| 30 It's a true vector display; vectors are drawn by moving the CRT beam | 31 It's a true vector display; vectors are drawn by moving the CRT beam |
| 31 on the screen (it's not a pixel based display). | 32 on the screen (it's not a pixel based display). |
| 32 | 33 |
| 33 .. image:: {static}/images/hp3562a/hp1345a_raster_vector.png | 34 .. image:: {static}/images/hp3562a/hp1345a_raster_vector.png |
| 35 :alt: Picture of the raster vs. vector display principle | |
| 34 | 36 |
| 35 It can diplay: | 37 It can diplay: |
| 36 | 38 |
| 37 - solid lines | 39 - solid lines |
| 38 - solid lines with intensified end points | 40 - solid lines with intensified end points |
| 49 - 0.51cm/µs | 51 - 0.51cm/µs |
| 50 | 52 |
| 51 Allowing more brightness control of the vectors. | 53 Allowing more brightness control of the vectors. |
| 52 | 54 |
| 53 .. image:: {static}/images/hp3562a/hp1345a.jpg | 55 .. image:: {static}/images/hp3562a/hp1345a.jpg |
| 56 :alt: Picture of the HP1345A vector display module | |
| 54 | 57 |
| 55 | 58 |
| 56 If not connected with a controller, it shows a test pattern for | 59 If not connected with a controller, it shows a test pattern for |
| 57 adjustments. | 60 adjustments. |
| 58 | 61 |
| 59 .. image:: {static}/images/hp3562a/hp1345a_test_pattern.png | 62 .. image:: {static}/images/hp3562a/hp1345a_test_pattern.png |
| 63 :alt: Picture of the HP1345A test pattern | |
| 60 | 64 |
| 61 The unit looks like: | 65 The unit looks like: |
| 62 | 66 |
| 63 .. image:: {static}/images/hp3562a/hp1345a_side.jpg | 67 .. image:: {static}/images/hp3562a/hp1345a_side.jpg |
| 68 :alt: Picture of the HP1345A vector display module (side view) | |
| 64 | 69 |
| 65 .. image:: {static}/images/hp3562a/hp1345a_side2.jpg | 70 .. image:: {static}/images/hp3562a/hp1345a_side2.jpg |
| 71 :alt: Picture of the HP1345A vector display module (side view) | |
| 72 | |
| 66 | 73 |
| 67 .. image:: {static}/images/hp3562a/hp1345a_top.jpg | 74 .. image:: {static}/images/hp3562a/hp1345a_top.jpg |
| 75 :alt: Picture of the HP1345A vector display module (top view) | |
| 68 | 76 |
| 69 | 77 |
| 70 Adjustment and repair | 78 Adjustment and repair |
| 71 --------------------- | 79 --------------------- |
| 72 | 80 |
| 87 between a power rail and the ground). It took me a little while before | 95 between a power rail and the ground). It took me a little while before |
| 88 identifing the real culprits, since the only solution to check them is | 96 identifing the real culprits, since the only solution to check them is |
| 89 to desolder (at least one end): A1C45 and A1C48. | 97 to desolder (at least one end): A1C45 and A1C48. |
| 90 | 98 |
| 91 .. image:: {static}/images/hp3562a/hp1345a_dead_caps.jpg | 99 .. image:: {static}/images/hp3562a/hp1345a_dead_caps.jpg |
| 100 :alt: Picture of the 2 shorted tantalum capacitors | |
| 92 | 101 |
| 93 | 102 |
| 94 These 2 small (tantalum) caps near U3 were short. Not sure why they | 103 These 2 small (tantalum) caps near U3 were short. Not sure why they |
| 95 died when I powered the display unit with my power supplies, maybe I | 104 died when I powered the display unit with my power supplies, maybe I |
| 96 set them to a bit higher voltage then what the HP3562A generates. | 105 set them to a bit higher voltage then what the HP3562A generates. |
| 109 | 118 |
| 110 Brief description | 119 Brief description |
| 111 ----------------- | 120 ----------------- |
| 112 | 121 |
| 113 .. image:: {static}/images/hp3562a/hp1345a_block_diagram.png | 122 .. image:: {static}/images/hp3562a/hp1345a_block_diagram.png |
| 123 :alt: General block diagram of the HP1345A display unit | |
| 114 | 124 |
| 115 .. image:: {static}/images/hp3562a/hp1345a_stroke_generator.png | 125 .. image:: {static}/images/hp3562a/hp1345a_stroke_generator.png |
| 126 :alt: Block diagram of stroke generator of the HP1345A display unit | |
| 116 | 127 |
| 117 | 128 |
| 118 .. image:: {static}/images/hp3562a/hp1345a_ramp_generator.png | 129 .. image:: {static}/images/hp3562a/hp1345a_ramp_generator.png |
| 130 :alt: Block diagram of the ramp generator of the HP1345A display unit | |
| 119 | 131 |
| 120 | 132 |
| 121 .. image:: {static}/images/hp3562a/hp1345a_vector_processor.png | 133 .. image:: {static}/images/hp3562a/hp1345a_vector_processor.png |
| 134 :alt: Block diagram of the vector processor of the HP1345A display unit | |
| 122 | 135 |
| 123 .. image:: {static}/images/hp3562a/hp1345a_vpc_architecture.png | 136 .. image:: {static}/images/hp3562a/hp1345a_vpc_architecture.png |
| 137 :alt: Block diagram of the VPC architecture of the HP1345A display unit |
