KO4BB Wiki test_equipment

test_equipment:attenuator_repair_for_hp_agilent_microwave_equipment

2013-01-08T19:00:00-04:00

Attenuator Repair For HP/Agilent Microwave Equipment From the HP_Agilent_Equipment Mailing List on Yahoo: ---------- Since Agilent continuously ups the spare part prices and discontinues parts it has become more and more important to go past normal repair practices.

test_equipment:bus_cable_wiring_for_hp_8566_8568

2013-01-08T19:00:00-04:00

Bus cable Wiring for HP 8566/8568 Spectrum Analyzers This information relates to the Bus Cable for the HP 8566/8568 Spectrum Analyzers series. ---------- Wiring on display end corresponds to pin numbering stamped on “DB-50” connector. Wiring on RF

test_equipment:cleaning_tek_7603_intensity_pots

2013-01-08T19:00:00-04:00

Cleaning Tek 7603 Intensity Pots From the TekScope mailing list: ---------- Hi! Some time ago, I asked about the correct way of cleaning the intensity pot of my 7603. I got a few helpful answers and some hints about the archive. I had a few free days and decided to tackle the task. The intensity pot at my 7603 was jumpy, and the readout-intensity pot worked only erraticaly. So I removed the right part of the cabinet and examined the assembly closely. There are two pots and a switch on a …

test_equipment:coax_connectors_and_adapters

2013-01-08T19:00:00-04:00

Coax Connectors And Adapters A few words of advice regarding adapters ! Every RF Lab needs them and has them but the importance of adapters is always underrated ! a adapter can make or break a measurement so choosing the right adapter and buying quality is essential!

test_equipment:extender_for_tek_7000_series

2014-05-21T13:09:00-04:00

Extenders for Tek 7000 Series Oscilloscopes Craig Sawyer has made a home brew 7xxx flexible extender a year or so ago. He has uploaded details onto his server, and he says you are welcome to download it. ---------- Notes * All cables are 3 feet long (or 1 metre)

test_equipment:gpib_under_linux

2013-01-08T19:00:00-04:00

GPIB Under Linux From the Tekscopes newsgroup on Yahoo ---------- I just this year went the linux route with IEEE-488 (GPIB) and python. I use a NI pci controller card and that is easy enough to set up under the “Linux-lab project” but there is not a binding for pyvisa to that package

test_equipment:hard_drive_conversion_to_cf_for_hp16500

2025-11-06T22:42:22-04:00

Hard Drive Conversion To CF For HP16500 HP 16500x Hard drive Info This data is from a HP 16500C logic analyzer. These have an m68k processor. The system software is based on the pSOS real-time operating system. The data and boot block format on these drives is whacked.

test_equipment:hp5370_manual_errata

2013-01-08T19:00:00-04:00

Various errata for the HP5370B manual: p 3-24, “TB1” The manual states that this is only good for timeintervals < 320ps. This should read 320µs. p 8-101, “LA0”, “LEN0”, “LEN1” & “LEN2” These signals are mislabeled. Signal labeled LA0 is LEN0, LEN0 is LEN1, LEN1 is LEN2 and LEN2 is LA0. (See also: 8-99)

test_equipment:hp8350_known_issues

2013-01-08T19:00:00-04:00

HP8350 Common Issues. The HP8350A and 8350B is getting common on ebay and other used equipment places. Most generators are getting old and there are several known issues. Before starting fault finding an main frame or plug-in, should be read. Option 001 instruments with leaking battery.

test_equipment:hp_859x_cpu_configuration

2013-01-08T19:00:00-04:00

HP 859x CPU Conversion David Franklin wrote: ---------- I have an 8592B that I am trying to get going. It was working fine when the display became scrambled. I sent it to Agilent for repair and they returned it to me with the following: “Display video is scrambled and unstable

test_equipment:hp_3458a_precision_digital_multimeter

2013-01-08T19:00:00-04:00

HP 3458A Precision Digital Multimeter From: Dick Moore To: volt-nuts@febo.com Hi, Marv -- RE my 3458 -- It was very clean externally, leading me to think it had been used in a test or lab environment, but it needed a display board and a ROM board, both of which I installed. Then it went to Loveland for calibration. That was last September. Because the ROM board was replaced, there was no

test_equipment:hp_4352a_vco_analyzer

2013-01-08T19:00:00-04:00

HP 4352A VCO Analyzer A while ago I bought a couple of 4352A VCO Analyzers, mainly out of curiosity and because they were cheap. I had since then time to play around with those and wanted to share my findings with the group. All in all I consider the 4352A a instrument worth having in a well equipped lab especially if your work involves PLL Synthesizers or VCOs.

test_equipment:hp_8753_a_to_b_conversion

2013-01-08T19:00:00-04:00

HP 8753A to B Conversion There are three main differences in between the A and B. One is the Firmware, the second one is the phaselock board (8753B had an improved board) also the B has a source that provides higher output power. Lothar Note: 8753A and B ROMs are in the ROM Images directory of the Manual pages.

test_equipment:hp_53131a_display_replacement

2019-02-16T20:46:53-04:00

Ragnar Sundblad ragge@kth.se from [time-nuts] Feb 15, 2019, 5:01 PM Hi all, Since I have seen people asking for something like this before: I made an interface for connecting a more commonly available display to a 53131A, useful if the VFD (display) is worn out.

test_equipment:hp_attenuator_part_number_information

2013-01-08T19:00:00-04:00

HP Attenuator Part Number Information From the HP_Agilent_Equipment Mailing List on Yahoo: ---------- Generally HP Sold Step attenuators under 2 part designations: 849x and 33321 or 33322x. All 849x attenuators were sold as end product for bench use, the 3332x variants were sold as OEM models at a discounted price to instrument manufacturers and ATE integrators.

test_equipment:hp_lever_switch_repair

2013-01-08T19:00:00-04:00

Lever Switch Repairs On HP8552B IF Unit (and others) My 8552B had been damaged in transit and the SCAN MODE switch arm lever broken off and missing. A previous post asking for advice on how to fix this switch got no response, so I assume that most of you have easy and cheap access to spare switches and have never needed to fix a broken one. But that's not the case outside the US so I had to

test_equipment:hp_power_sensor_information

2013-01-08T19:00:00-04:00

HP Power Sensor Information The 8481/82/85/87 basically all use the same thermocouple. HP used to sell those as spare parts for about $50 ea, now the price is up to $300 ea with a 100pcs min order (1 waffle pack.) So what is the reason for the sensors to have different frequency specifications?

test_equipment:low_cost_digital_storage_scopes

2013-01-08T19:00:00-04:00

Low Cost Digital Storage Scopes From Sam, the moderator of the LeCroy_Owners_Group on Yahoo ---------- My diatribe on various low cost (<1K$ US) DSO's. This is also to address Jason's post about replacing his 9350CL Now right off the bat, those of you that know me are aware that I design electronics for a living, and I have used, repaired, and worked on (or a combination of all three) just about any piece of electronics test equipment that you can name and that I have no connection to any t…

test_equipment:my_philosophy_about_test_equipment_manuals

2013-01-08T19:00:00-04:00

My Philosophy About Test Equipment Manuals Since I host a number of free manuals in pdf on my web site, here my take on the subject: 1) we need quality outfits such as Artek Media, Qservice, AA4DF and a few others. They provide valuable service by having access to paper manuals very few people have and the quality of their scans is generally much better than what I and other

test_equipment:precision_voltage_references

2013-01-08T19:00:00-04:00

Precision Voltage References John Ackermann N8UR wrote: " I'm interested in learning some basics about precision voltage calibration (as can be realized by the hobbyist, not Josephson Junction systems!). A Google search hasn't turned up anything like a tutorial.

test_equipment:precision_z-foil_vishay_resistors

2013-01-08T19:00:00-04:00

Precision Z-Foil Vishay Resistors The following was captured from the [volts]nut] mailing list ---------- The experiments and the following discussion with Vishay took nearly one year, until now I am able to present a final result. Further details about the measurements and the setup will be given later.

test_equipment:removing_tek_2430_2440_power_supply

2013-01-08T19:00:00-04:00

Removing a 2430A, 2432A or 2440 Power Supply Assumptions: The right side means the side on your right when you're looking at the instrument's CRT, similarly for the left side. 1. Remove the 4 screws (Torx T20) in the rear rubber feet. 2. Stand up the scope on its rear rubber feet (the rear cover is now loose).

test_equipment:repair_coils_on_hp_attenuators

2013-01-08T19:00:00-04:00

Repair Coils on HP Attenuators Just wanted to let you know I was able to repair and rewind the 4 damages bobbins. I first tried using the original #35 AWG magnet wire size, but due to the physical repair I had to do on the damaged plastic bobbins I was not able to wind the same number of turns as the original coil, so the resistance was too low (about 42 Ohms instead of the original 50 Ohms).

test_equipment:replacing_backup_battery_on_tek_2246_scope

2013-01-08T19:00:00-04:00

Replacing Backup Battery On Tek 2246 Scope From Tom Jobe, on Tekscopes: ---------- Post #1 Recently there has been some discussion of 2246's and the back up batteries for them were mentioned, so I thought I would chime in with some 224X battery information for the archives just in case it would be of any use to anyone.

test_equipment:replacing_leaf_springs_on_hp_equipment

2013-01-08T19:00:00-04:00

Replacing Leaf Springs On HP Equipment This posting appeared on the [hp_agilent_equipment] mailing on Yahoo groups. ---------- After hunting around for suitable material to replace corroded, tired or missing leaf springs for the switches in some of my HP test equipment, I happened upon a source I already possessed. Those little EAS or AM antitheft labels you find inside DVDs, consumer electronics, or other high-value items you pick up at Target or Walmart. These are the stick- on, rectangula…

test_equipment:replacing_rotary_encoder_lamp

2013-01-08T19:00:00-04:00

Replacing Rotary Encoder Lamp on various HP equipment mikenearlibertymo wrote: > I recently bought a couple units off ebay and one had no manual sweep > or step functions. The problem was a burnt out grain of wheat lamp in > the opto resolver. The lamps are same/similar to what you find in

test_equipment:restore_eeprom_of_hp_8753

2013-01-08T19:00:00-04:00

Restore EEPROM of HP 8753 Conrad G0RUZ wrote: Hi Our trusty HP8753B/85047A combination which has Option 006 installed now refuses to work at all above 3 GHz. The frequency doubler option just does not appear in the menu any more. Agilent have said that they cannot repair it due to an obsolete memory module/loss of image. I am sure that this is a common problem on these old work horses, can any one advise how to get the necessary part/s and how to re-program any corrupt mem…

test_equipment:sampling_explained_to_the_lay-person

2013-01-08T19:00:00-04:00

Sampling explained to the lay-person On Fri, Feb 6, 2009 at 6:58 PM, George wrote: " Greetings to the group, I need to know from all who know what Sampling is all about and make the answer simple enough for a 10-14 year old to understand. I was just given a Sampling plugin for the 5XX series scopes along

test_equipment:soldering_beam_lead_diodes

2013-01-08T19:00:00-04:00

Soldering Beam Lead Diodes From the hp_agilent_equipment newsgroup: ---------- I have been messing around with RF+Microwave stuff for over 27years now, I been on both sides of the fence - hobbyist and professional, right now I'm both :) Usually if you go by the book there are three ways to properly mount beam lead devices:

test_equipment:soldering_thermo_couples

2013-01-08T19:00:00-04:00

Soldering Thermo Couples Let's talk a little about thermocouple wire alloys: There are about 6 principal thermocouple pairs in common use: * Type E - CR-CN * Type J - Fe-CN * Type K - CR-AL * Type R - Pt/13/Rh-Pt * Type S - Pt/10/Rh-Pt

test_equipment:tds210_dead_backlight

2013-01-08T19:00:00-04:00

TDS210 Dead Backlight " I just acquired a TDS224 4 Channel 100MHz DSO that other than the backlight being dead is otherwise perfect. Does anyone have any details about the dimensions of the CCFL tube used in these scopes before I tear into it?

test_equipment:tds754c_brightness_adjustment

2013-01-08T19:00:00-04:00

TDS754C Brightness Adjustment From: “Dan Meeks” To: Subject: RE: [TekScopes] Re: TDS754C for $1000 on Ebay Fixed! Thanks to Hakan for pointing me in the right direction. For future problem-solvers, here is the story: TDS754C arrived with dim screen and also the screen was too large in both dimensions. It was wrapping slightly around the edges of the tube. I could adjust the brightness using the trimmers on the left side of the high voltage power board (these …

test_equipment:tds_series_firmware

2013-02-14T19:00:00-04:00

TDS Series Firmware From the Tekscopes group at yahoo: ---------- " Team, I was wondering if anyone knows what the latest firmware / software revisions are for the three digit TDS series. I am mostly looking for the 754 / 784 series but since the three

test_equipment:tek_468_repair_tips

2013-01-08T19:00:00-04:00

Tek 468 Repair Tips From the TekScopes mailing list: ---------- I just finished a 468 that had a bad rom. Just for the record, there is an error in the troubleshooting section relating to the testing of just the analog section of the scope. If the processor fails, you will have a hung up trace off screen on the left side of the scope.

test_equipment:tracking_generator_-_convert_tr-502_to_tr-503_configuration

2013-01-08T19:00:00-04:00

Conversion of TR-502 Tracking Generator to the TR-503 R.F.Configuration For the information of anyone interested, I finally managed to get my Tek TR-502 Tracking Generator working properly with a Tek 492 spectrum analyzer. It turned out all that was required was to change the 52.5

test_equipment:using_the_hp3048_noise_measurement_test_set

2013-01-08T19:00:00-04:00

Using The HP3048 Noise Measurement Test Set There was a fairly long thread on Time-Nuts about how to use the HP 3048 to measure spurs. Here are some of the responses: ---------- Martyn first wrote: " To test the 3048A accuracy I inject a spur at a known level using a