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Re: USB to GPIB Adapter
Or roll your own... http://www.dalton.ax/gpib/ :) Happy New year, everyone! -- Anders Gustafsson Engineer, CNE6, ASE Pedago, The Aaland Islands (N60 E20) www.pedago.fi phone +358 18 12060 mobile
By Anders · #48602 ·
Re: DIY: Repair of HP 8568B Step Attenuators - mystery solved and yet another question...
John- If the picture is to be believed, then it appears that 5180-2720 is exactly the right design but about 10% too small. 5180-2720: 3/8 by 5/16 My part: 7/16 by 3/8 I am wondering if HP's
By james.schatzman · #48601 ·
Re: Oscilloscopes - analog but with digital capability?
<jfor@...> wrote: That is sure the case. The only problem with the 7B53A or other 100 MHz 7B5x timebases is that the 7854 vertical delay line at 65ns is too short to show the leading edge.
By David Hess · #48600 ·
Re: DIY: Repair of HP 8568B Step Attenuators - mystery solved and yet another question...
Jim, I think the same basic attenuator hybrids are used in the 8594(A-E) and similar frequency range spectrum analyzers. (Some higher bandwidth analyzers (22GHz) use a pair of 20dB pads to get
By John Gord · #48599 ·
Re: Pozi-Drive bits
By Richard Knoppow · #48598 ·
Pozi-Drive bits
I know this has come up many times in the past so when I stumbled upon PoziDrive driver bits today in the HomeDepot I thought I would pass on the tip (Pardon the pun please). There are two driver
By bownes · #48597 ·
Re: DIY: Repair of HP 8568B Step Attenuators - mystery solved and yet another question...
Vladan and the group - Wow! That is one fancy piece of miniature mechanical manufacturing. Like a Swiss watch. Beautiful. Crazy. Amazing. Unfortunately, the 40 dB attenuator is indeed open at one
By james.schatzman · #48596 ·
Schematic for HP8648B
Hi, I am looking for a schematic, or service manual with schematic, for the HP8648B. My set is faulty with these error codes : Opt 1E6. 100khz-2000Mhz. . Faults are : 516 Config 2 restore
By cslim388 · #48595 ·
Re: Oscilloscopes - analog but with digital capability?
<jfor@...> wrote: The specifications say 70 MHz bandwidth and simultaneous sampling of 40 MS/sec on each channel. I have heard that the bandwidth could be significantly higher on some
By David Hess · #48594 ·
Re: DIY: Repair of HP 8568B Step Attenuators - another question...
Hi Jim, Do not unscrew the solenoids on the top, at least not for now. To see what's happening, you will have to open the lower part where the RF action is. The two SMA connectors have hex-nuts.
By pianovt · #48593 ·
Re: Oscilloscopes - analog but with digital capability?
No. The DPO uses an LSI-11 as a 'puter. I have one. The 7D20 is much later. The DPO separated thye PI and display sections of the scope with a digitizer unit, maybe the d7001. Are you sure about the
By J. Forster <jfor@...> · #48592 ·
Re: DIY: Repair of HP 8568B Step Attenuators - another question...
Vladan- I got the cover off without trouble. By testing I note that when the middle (40 dB) switch is triggered, the output turns off completely. As far as I can determine, the plunger is actuated
By james.schatzman · #48591 ·
Re: DIY: Repair of HP 8568B Step Attenuators
Jim, You will have to pull out the front panel. There are a few flat-head screws along the front frame (top and bottom, maybe even sides - don't remember any more). Once you remove them, the front
By pianovt · #48590 ·
Re: DIY: Repair of HP 8568B Step Attenuators - addendum
All- When all else fails, read the manual! The 8568B service manual says to remove the front panel. That is easy and the attenuator is then right in front of you. I was trying to get at it from the
By james.schatzman · #48589 ·
Re: HP 8970B firmware v2800+ wanted
Hi Christian, There is very little information available about the firmware revisions for the 8970B. Certainly, if you have a standard unit (1600 MHz high end), you will not want any version of the
By pianovt · #48588 ·
Re: Oscilloscopes - analog but with digital capability?
I have a Phillips PM3375 out in the workshop, and I'm using an HP54601A in the radio shack to monitor transmitter RF; with accurate directional couplers, I can calibrate watt meters. Not far away, on
By ka5s <ka5s@...> · #48587 ·
Re: Oscilloscopes - analog but with digital capability?
<madyn@...> wrote: The P7001 is not as common as the 7854 which is the same basic design. I have seen one or two in the past couple of years for sale but would prefer the 7854 if only
By David Hess · #48586 ·
Re: DIY: Repair of HP 8568B Step Attenuators
All- O.k., I have an 8568B with a bad attenuator (40dB and below are dead). My big question is - how do you get access to the attenuator to take it apart and clean/repair? It seems to be really
By james.schatzman · #48585 ·
Re: Oscilloscopes - analog but with digital capability?
I will admit that there is not a complete and free 2230 service manual available online but ArtekManuals and others have scanned service manuals available inexpensively. Maintenance is made easier
By David Hess · #48584 ·
Re: Oscilloscopes - analog but with digital capability?
Back in the mid 80's I remember using the Tek 7D20 digitizer plug-in. It only had a 20MHz sampling rate with an over sampling bandwidth of 70MHz. It was OK for sampling in the audio range but not go
By [email protected] <willcoele@...> · #48583 ·