开云体育

Hi I have spoken to the UK supplier I am due to visit him this week but I don’t think he believed me when I told him I had only found 7 independent users of HP 70000 equipment in the UK and that a

Dave,? Got side tracked.? ?Have about 75% finished.? ?Within the next few days I should have it finished.? Going to be 2-3 parts each around an hour each.? Much detail presented. George

Does anyone still use MATE? I worked on a runner up to that program a long while ago... ("our" proposal wasn't accepted).... Did some 488 bus programming using a TMS9914 controller run by an 8088.

Hi Paul, "The HP 70590A Options H69 and H72 TMAs (Test Module Adapters) are MATE modules for HP 70000 Series spectrum analyzers. The modules translate CIIL (control intermediate interface language)

I think the cal signal on that unit is built into the unit. You do not have to connect an external cable to calibrate. Please check the manual.

George, I am looking forward to your video on the design of a modern DMM. ?Do you possibly have an update? Cheers, David

The lack of detent and friction are not related to o-rings. Take off the end-cap (4 socket screws). This will allow you to slide off the u-shaped cover. You will see a camshaft held by two bushings

Is the 4401 really that different from the '02, '03, etc? Have never looked at an '01.

Hi Wolfgang, I don't have an HP 5315A, but in my HP 5328A the power switch is wired this way because they want to keep the oscillator running always that the counter is plugged into the mains. This is

Hi, Jan, I have one A10 OSCILLATOR? ?00105-6013. It is totally new, never used and I was keeping it to be used in a future GPSDO that I think that never will materialize. If it happens to be the

Ok, still I am a bit skeptical that there is an LO problem, The second LO is generated from 800MHz phased locked reference, so I imagine there must be some sort of error message if the LO or the REF

Yes, that is at 0dB attenuation, and a +10dBm input signal. It does change with the attenuator setting – it goes down into the noise as I add attenuation. Sadly, there are no connectors in the chain

Hi all Looking for information on a HP 70000 module type HP 70590A apparently it is a test module adapter Any help appreciated Paul B

That might have been me talking about the "LO Unlock" error. Different problem here. Mark

is that for 0dB attenuator setting? the level should change with attenuator setting. still it doenst necessarily mean you dont have the second LO but it could be one reason for very low IF output is

Have an HP 85044-60001 0-70 dB step 10 dB, 4 GHz attenuator (part of 85044A test set). Rotation is more difficult (more torque) than normal, detents are imprecise/mushy (have to hunt a little to get

You raise a valid point. On that point, I decided to double check the magnitude of the 21.4MHz IF signal coming out of A8J3. It is present, but is around -67 dBm – far lower than it should be.

What is that YTO used in? And what frequency range? Peter

I recall there was some discussion of a problem HP-made HF divider chip in an SA or SG here within the past few months or so. Someone talked about having made a replacement for the chip with modern

if you have the second IF out put at correct amplitude the of course your second LO is fine so the only culprits is either the divider chip (800 / 16) or the solid state switch that injects the 50MH