My neighbor passed away a few years back the person that took over his estate gave me this piece of equipment. I’m not sure what it is and what it is used for.

jW

 

I believe this is a Hewlett-Packard Oscilloscope. The US Navy used these in the past, but from what I understand, they are no longer in service. If nothing else, you can rig it to play Pong if you get bored. After all, pong was first played on an Oscilloscope.

 

Classic stuff. Everything is mounted in an old standard 19" rack panel. You can Google the part numbers but the top is an old MX2930 / USM-105 Oscilliscope w/ vertical plug in. The plug in vertical channels were common. My guess based on looks is it is a HP manufacture scope. Further down is a pretty cool Mega Cycle Electro Pulse generator. Note the reference to MegaCycle which today would be MegaHertz. This was before we better defined those terms, much like we used the term MegaHertz to define as CPS (Million Cycles Per Second). This is the stuff I began my career with. While the original owner was a Ham this stuff was just TMDE (Test Measurement Diagnostic Equipment). The rack for power supplies is empty. You may want to yank out the panel with a bunch of meters and look for an identifying tag. My guess is a voltmeters with selectable gain. I would fire up the scope and see if it works.

Ron

 

Classic stuff. Everything is mounted in an old standard 19" rack panel. You can Google the part numbers but the top is an old MX2930 / USM-105 Oscilliscope w/ vertical plug in. The plug in vertical channels were common. My guess based on looks is it is a HP manufacture scope. Further down is a pretty cool Mega Cycle Electro Pulse generator. Note the reference to MegaCycle which today would be MegaHertz. This was before we better defined those terms, much like we used the term MegaHertz to define as CPS (Million Cycles Per Second). This is the stuff I began my career with. While the original owner was a Ham this stuff was just TMDE (Test Measurement Diagnostic Equipment). The rack for power supplies is empty. You may want to yank out the panel with a bunch of meters and look for an identifying tag. My guess is a voltmeters with selectable gain. I would fire up the scope and see if it works.

Ron

It will all turn on

Classic stuff. Everything is mounted in an old standard 19" rack panel. You can Google the part numbers but the top is an old MX2930 / USM-105 Oscilliscope w/ vertical plug in. The plug in vertical channels were common. My guess based on looks is it is a HP manufacture scope. Further down is a pretty cool Mega Cycle Electro Pulse generator. Note the reference to MegaCycle which today would be MegaHertz. This was before we better defined those terms, much like we used the term MegaHertz to define as CPS (Million Cycles Per Second). This is the stuff I began my career with. While the original owner was a Ham this stuff was just TMDE (Test Measurement Diagnostic Equipment). The rack for power supplies is empty. You may want to yank out the panel with a bunch of meters and look for an identifying tag. My guess is a voltmeters with selectable gain. I would fire up the scope and see if it works.

Ron

It all works or at least turns on and needles move. But what would one use it for. Like in a real world example. The guy who passed was a realtor as was his wife.

thank you for the reply

jW

 

USM-105
see page 31. ... possibly a treasure to ship radioman and ship restoration crew guessing it is HP about 1965
NAVSHIPS 94200.4 Directory of Electronics Test Equipment

 

It will all turn on


It all works or at least turns on and needles move. But what would one use it for. Like in a real world example. The guy who passed was a realtor as was his wife.

thank you for the reply

jW

Well if the scope works it's a scope. The problem being it's a very old scope with a very limited bandwidth. Same for the pulse generator, it's old so while Mega Cycles sounds cool it's limited as to upper frequency limit. It's old basic test equipment and I am familiar with some of it because yes, I am that old and yes when I worked with it, it was state of the art. Today most see it as junk. Use the scope as a scope and the pulse generator as a pulse generator. No clue as to the analog meter panel. Like I mentioned, remove the meter panel from the rack and look for any name plate data.

Ron

 

It will all turn on


It all works or at least turns on and needles move. But what would one use it for. Like in a real world example. The guy who passed was a realtor as was his wife.

thank you for the reply

jW

That's very hard to say, because it is essentially a collection of test and measurement equipment that can be used for lots of different things -- and most likely was used for lots of different things.

This would be akin to getting a toolbox from fifty years ago that had a large selection of old tools in it and then asking someone to look at it and tell you what that particular tool box was used for.

 

Well if the scope works it's a scope. The problem being it's a very old scope with a very limited bandwidth. Same for the pulse generator, it's old so while Mega Cycles sounds cool it's limited as to upper frequency limit. It's old basic test equipment and I am familiar with some of it because yes, I am that old and yes when I worked with it, it was state of the art. Today most see it as junk. Use the scope as a scope and the pulse generator as a pulse generator. No clue as to the analog meter panel. Like I mentioned, remove the meter panel from the rack and look for any name plate data.

Ron

Thanx for taking the time and knowing an off the wall unit….ill try and find a name plate!
Thanx again

 

Thanx for taking the time and knowing an off the wall unit….ill try and find a name plate!
Thanx again

No problem and I enjoy stuff like this as it brings back some fond memories.

Ron

 

There are two name plates on the top units.
Post sharp photos of the name plates.

 

Next to bottom is a pulse generator.

Special Features:
Single shot switch

Properties:
Overall Length
19.500 inches
Overall Height
8.750 inches
Overall Width
13.000 inches
Basic Shape Style
Rectangular or square
Inclosure Type
Encased
Installation Design
Portable
Circuit Construction Type
Electron tube
Frequency Adjustment Type
Continuous
Average Power Rating Per Channel
375.0 watts input
Signal Voltage Rating Per Channel
50.000 volts output
Impedance Rating Per Channel
50.000 ohms operating channel
Pulse Rise Time Per Channel
0.015 microseconds operating channel
Pulse Decay Time Per Channel
0.015 microseconds operating channel
Pulse Modulation Type Per Channel
Amplitude operating channel
Signal Data Type Per Channel
Operating channel pulse
Connection Type And Location
Single panel jack front
Operating Ac Frequency In Hertz
60.0 single voltage
External Ac Operating Voltage In Volts
115.0 single voltage
NSN
6625-00-908-9119
Part Number
3450C
Description
Generator,pulse
CAGE
92110

 

Scope is a navy version of HEWLETT PACKARD: Model 160B Oscilloscope (AN/USM-105A)
Spezifikation:
Frequenzbereich: DC ... 14 MHz (mit Vertical Plug-In-Unit 162A)
Betriebsarten: Kanal A, Kanal B, Chopped, Alternate, A-B
Empfindlichkeit: 20 mV/cm bis 20 V/cm in 10 Bereichen
Abmessungen: (19 x 14,6 x 22,2) inches; Gewicht: 42kg


O-scope addon:
1960s MX-2930A/USM Vertical Channel Dual Trace Preamplifier

Picture of delay sweep.

 

Third from the bottom (center) is tdpw712 Electra pulse.
Is this part of a radar system?

 

Third from the bottom (center) is tdpw712 Electra pulse.
Is this part of a radar system?

Idk….it was our neighbors a croos the street growing up in the mid 90s in clw fl USA. He and his wife were real estate agents, he past away in 2019 and his estate was given to a neighbor lady, she give it to me.

in the same room he had capacitors and diodes, a lot of wire. He had a lot of reel to reel audio.

Anyway idk what any of it does, to me it just looked cool and lights up

jw

 

Thanx for taking the time and knowing an off the wall unit….ill try and find a name plate!
Thanx again

Just curious, which one is the meter panal

 

Better pix

 

Just curious, which one is the meter panal

Right below the scope, the panel with 8 analog meters. Removing it may reveal a name plate.

Ron

 

Right below the scope, the panel with 8 analog meters. Removing it may reveal a name plate.

Ron

This was what was behind 8 analog

 

OK I see a Lambda power supply and transformers off to a side as well as a collection of diode full wave bridges. Looks like the fellow made a bunch of homebrew (homebrew = custom made at home). Maybe someone else has a thought? Nice pictures.

Ron

 

there is transistor or regulator on TO3 heatsink. likely four identical units - regulated power supplies (with V and A meter). each unit has two knobs... either voltage coarse and fine adjustment or voltage and current limit. there are +-GND-- terminals below knobs:



same thing as modern versions, but retro!