content/hp3562a.rst

Tue, 28 Aug 2018 15:05:01 +0200

author
David Douard <david.douard@logilab.fr>
date
Tue, 28 Aug 2018 15:05:01 +0200
changeset 104
8396e709bde5
parent 71
76d5c4108e51
child 115
6b6e13653348
permissions
-rw-r--r--

improve hgignore

71
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
1 =================================
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
2 HP3562A Dynamic Signal Analyzer
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
3 =================================
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
4
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
5 :Author: David Douard
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
6 :Category: Electronics
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
7 :Tags: HP3562A, repair, test equipment, DSA
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
8 :series: HP 3562A
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
9 :series_index: 1
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
10
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
11 One of my old test gears waiting for my attention in the cellar was a
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
12 HP 3562A Dynamic Signal Analyzer. Back then I bought this device
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
13 mainly for doing audio analysis (I was building my HiFi system, mostly
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
14 based on Nelson Pass' schematics), mainly to display spectrum
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
15 responses and compute THD and so.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
16
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
17 I did not reall know what this test equipment is capable of. But `Dave
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
18 Jones's video #528`_ (and several wonderful videos on `w2aew's
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
19 channel`_) gave me the desire of playing a bit more with this old but
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
20 very impressive HP3562A.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
21
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
22 .. _`Dave Jones's video #528`: https://www.youtube.com/watch?v=Y0jkPLuFdnM&t=1876s
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
23 .. _`w2aew's channel`: https://www.youtube.com/user/w2aew
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
24
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
25
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
26 Quick tour
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
27 ==========
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
28
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
29 Here is the beast:
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
30
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
31 .. image:: {filename}images/hp3562a/front.jpg
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
32
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
33 I said the beast, because despite being an amazing piece of test
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
34 equipment, it's also very big (576mm x 426mm x 222mm), very heavy
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
35 (26kg) and... unfortunately quite loud.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
36
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
37 My version of the instrument is rather "recent", and manuals available
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
38 on Keysight web site concern only the earliest models
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
39 (ref. 03563-90210) and are of poor quality, with missing pages etc. So
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
40 I bought the correct Service Manual (HP ref. 03562-90213) on ebay from
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
41 `Artek Media`_.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
42
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
43 .. _`Artek Media`: http://www.artekmedia.com/
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
44
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
45 Since it was on my "bench", I decided to see a bit inside, using the
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
46 occasion to investigate and fix the only real problem I have (as far
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
47 as I know) with my device: the dimm display.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
48
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
49 .. image:: {filename}images/hp3562a/front_open.jpg
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
50
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
51 The unit consist in mostly 4 parts:
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
52
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
53 - a big switching power supply (with huge capacitors) on the left side
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
54 of the enclosure, under the display,
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
55
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
56 - the display unit: a very nice HP1435A Digital Display; we'll discuss
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
57 it a bit more later,
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
58
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
59 - the digital section consisting in 8 boards (rear right),
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
60
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
61 - the analog section consisting in 6 boards (front right).
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
62
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
63
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
64 The general block diagram:
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
65
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
66 .. image:: {filename}images/hp3562a/hp3562a_block_diagram_new.png
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
67 :alt: General block diagram of the HP3562A
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
68
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
69 The instrument is built around 2 buses:
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
70
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
71 - the control bus which allows the main CPU to control all the
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
72 assemblies, and
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
73
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
74 - the global bus which is used to transfer measurement data between
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
75 assemblies.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
76
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
77 In the HP3562A, the process control is distributed away from the
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
78 system CPU: each assembly has its own processor or state machine which
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
79 controls its local operations. The main CPU tells each assembly which
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
80 process to execute and monitors the overall functionning and data
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
81 processing of the instrument.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
82
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
83 For the record, the block diagram from Service Manual 03562-90219
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
84 looks like:
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
85
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
86 .. image:: {filename}images/hp3562a/block_diagram.png
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
87 :alt: General block diagram of the HP3562A from earliest Service Manual
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
88
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
89
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
90 Power Supply
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
91 ============
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
92
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
93 .. image:: {filename}images/hp3562a/hp3562a_a18_psu_block_diagram.png
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
94 :alt: Block diagram of the switching power supply unit
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
95
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
96
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
97 .. image:: {filename}images/hp3562a/a18_psu.jpg
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
98
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
99 The primary capacitors are huge Sprague caps (1400µF 250V):
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
100
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
101 .. image:: {filename}images/hp3562a/caps.jpg
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
102
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
103 The power line filter is also pretty impressive:
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
104
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
105 .. image:: {filename}images/hp3562a/filter.jpg
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
106
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
107 The PSU generates:
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
108
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
109 - 5V @30A (!)
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
110
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
111 - +/- 30V
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
112
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
113 - +/- 15V
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
114
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
115 - +8V
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
116
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
117 - +2.6V
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
118
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
119 The switching chopper runs at 128kHz and is regulted on the 5V output
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
120 rail by PWM of the primary transformer. All secondary voltages but the
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
121 5V are generated by linear regulators.
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
122
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
123
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
124 Next
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
125 ====
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
126
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
127 In the `next part <{filename}hp3562a_2.rst>`_, we will describe the
76d5c4108e51 [blog] new series on the HP 3562A
David Douard <david.douard@logilab.fr>
parents:
diff changeset
128 Digital Section of the instrument.

mercurial