comparison: content/hp5334a.rst
content/hp5334a.rst
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| 10 The HP5334A is a decent universal counter. It has a two 100MHz | 10 The HP5334A is a decent universal counter. It has a two 100MHz |
| 11 channels. Some models come with an optional third channel (1.3GHz), an | 11 channels. Some models come with an optional third channel (1.3GHz), an |
| 12 optinal DVM, and an optional oven controlled | 12 optinal DVM, and an optional oven controlled |
| 13 oscillator. Unfortunately, my meter has no option at all. | 13 oscillator. Unfortunately, my meter has no option at all. |
| 14 | 14 |
| 15 .. image:: {filename}images/hp5334a/front.jpg | 15 .. image:: {static}images/hp5334a/front.jpg |
| 16 :alt: My HP5334A Universal Counter | 16 :alt: My HP5334A Universal Counter |
| 17 | 17 |
| 18 There is a nice quick instruction set printed on the top cover: | 18 There is a nice quick instruction set printed on the top cover: |
| 19 | 19 |
| 20 .. image:: {filename}images/hp5334a/top.jpg | 20 .. image:: {static}images/hp5334a/top.jpg |
| 21 :alt: HP5334A Quick Instruction Set | 21 :alt: HP5334A Quick Instruction Set |
| 22 | 22 |
| 23 | 23 |
| 24 On the rear panel are 2 BNC (ref in/out and gate), the power socket | 24 On the rear panel are 2 BNC (ref in/out and gate), the power socket |
| 25 and the GPIB connector. One thing is a bit annoying on this device, | 25 and the GPIB connector. One thing is a bit annoying on this device, |
| 30 reference standard`_ (since I don't intent to keep it running every | 30 reference standard`_ (since I don't intent to keep it running every |
| 31 time I want to user the 5334). | 31 time I want to user the 5334). |
| 32 | 32 |
| 33 When removing the covers, one can see: | 33 When removing the covers, one can see: |
| 34 | 34 |
| 35 .. image:: {filename}/images/hp5334a/pcb.jpg | 35 .. image:: {static}/images/hp5334a/pcb.jpg |
| 36 :alt: The top view of the PCB. | 36 :alt: The top view of the PCB. |
| 37 | 37 |
| 38 with a very nice star-shaped ground lattice. Among other interesting | 38 with a very nice star-shaped ground lattice. Among other interesting |
| 39 things are these funny little variable caps: | 39 things are these funny little variable caps: |
| 40 | 40 |
| 41 .. image:: {filename}/images/hp5334a/c89.jpg | 41 .. image:: {static}/images/hp5334a/c89.jpg |
| 42 :alt: C89, a nice little variable cap. | 42 :alt: C89, a nice little variable cap. |
| 43 | 43 |
| 44 And as one may expect in such a device, no fan. | 44 And as one may expect in such a device, no fan. |
| 45 | 45 |
| 46 The bottom side of the PCB looks like: | 46 The bottom side of the PCB looks like: |
| 47 | 47 |
| 48 .. image:: {filename}/images/hp5334a/pcb_bottom.jpg | 48 .. image:: {static}/images/hp5334a/pcb_bottom.jpg |
| 49 :alt: The bottom view of the PCB. | 49 :alt: The bottom view of the PCB. |
| 50 | 50 |
| 51 Adjustment | 51 Adjustment |
| 52 ========== | 52 ========== |
| 53 | 53 |
| 58 - tempco < 5 ppm (0°c to 50°C) | 58 - tempco < 5 ppm (0°c to 50°C) |
| 59 - line voltage < 0.1 ppm for 10% change | 59 - line voltage < 0.1 ppm for 10% change |
| 60 | 60 |
| 61 And it was not so out of specs: | 61 And it was not so out of specs: |
| 62 | 62 |
| 63 .. image:: {filename}/images/hp5334a/uncal.jpg | 63 .. image:: {static}/images/hp5334a/uncal.jpg |
| 64 :alt: Measuring a 1kHz reference | 64 :alt: Measuring a 1kHz reference |
| 65 | 65 |
| 66 In this picture, the signal is a 1kHz sine wave generated by a | 66 In this picture, the signal is a 1kHz sine wave generated by a |
| 67 HP8904A_ using my `Efratom 10MHz reference standard`_ as 10MHz | 67 HP8904A_ using my `Efratom 10MHz reference standard`_ as 10MHz |
| 68 reference, so it should be pretty close to a solid 1.000000kHz. The | 68 reference, so it should be pretty close to a solid 1.000000kHz. The |
| 77 10MHz oscillator and I have, for now, a mush better 10MHz internal | 77 10MHz oscillator and I have, for now, a mush better 10MHz internal |
| 78 clock (here we measure directly the 10MHz signal, and the gate time | 78 clock (here we measure directly the 10MHz signal, and the gate time |
| 79 delay has been set to 1s, as described in the service manual when | 79 delay has been set to 1s, as described in the service manual when |
| 80 adjusting the oscillator): | 80 adjusting the oscillator): |
| 81 | 81 |
| 82 .. image:: {filename}/images/hp5334a/cal.jpg | 82 .. image:: {static}/images/hp5334a/cal.jpg |
| 83 :alt: After adjustement against the rubidium reference standard. | 83 :alt: After adjustement against the rubidium reference standard. |
| 84 | 84 |
| 85 The adjustment capacitor is not fine enough to reach a spot 10MHz | 85 The adjustment capacitor is not fine enough to reach a spot 10MHz |
| 86 value, the best I could achieve is a 0.2Hz away from the expected | 86 value, the best I could achieve is a 0.2Hz away from the expected |
| 87 value, which is quite excellent, actually. | 87 value, which is quite excellent, actually. |
| 89 But let's see within the next few days if it drifts a lot or not (as I | 89 But let's see within the next few days if it drifts a lot or not (as I |
| 90 am writing this, it has moved a tiny bit to 10.0000005 MHz... 0.5Hz | 90 am writing this, it has moved a tiny bit to 10.0000005 MHz... 0.5Hz |
| 91 off, something like 0.05 ppm). | 91 off, something like 0.05 ppm). |
| 92 | 92 |
| 93 | 93 |
| 94 .. _`Efratom 10MHz reference standard`: {filename}/10MHz_ref.rst | 94 .. _`Efratom 10MHz reference standard`: {static}/10MHz_ref.rst |
| 95 .. _HP8904A: {filename}/hp8904a.rst | 95 .. _HP8904A: {static}/hp8904a.rst |
