(No subject)
Looking for a cross reference for: 1826-0938 1826-0796 Jim Cotton n8qoh
By
Jim Cotton
·
#23691
·
|
Re: HP8568B Error Correction Routine failure
John Miles wrote: In one of mine, one of the attenuator section's solenoid was stuck in one direction. There is a contact for each direction of movement that allows the solenoid current to flow
By
Dan Rae
·
#23690
·
|
Re: HP8568B Error Correction Routine failure
Sounds like the driver for the 20 dB pad is stuck on, although I'm not sure how that accounts for the -7.7 dBm business (Why isn't it -10? Attenuators don't fail in a way that yields +2.3 dB of
By
John Miles <jmiles@...>
·
#23689
·
|
Re: HP8568B Error Correction Routine failure
I did it. This is what I see disabling the IF step switching: ATTEN 10dB --> peak at -10,7 dBm ATTEN 20dB --> peak at - 7,7 dBm ATTEN 30dB --> peak at - 7,7 dBm ATTEN 40dB --> peak at -30,9 dBm ATTEN
By
ik7jwy
·
#23688
·
|
Re: HP-182C repair
Hi Paul, I'm still testing with no plugin. Try it, with display on EXT and 400 Hz on ext input you should have a clean horizontal track. It can be focused pretty well also (tried on the 182T). I'll
By
Francesco Messineo
·
#23687
·
|
Re: HP-182C repair
Hi Frank, When I was de-bugging my 182C, I did find that one of the Y plate drives was open circuit at the sliding contact that goes to the Y amp plug-in, as I recall this caused all sorts of odd
By
Paul Read <paulr@...>
·
#23686
·
|
Re: Agilent E4420 series Sig Gen
Hi Steve, I am not very up on the options, but the Agilent site should have all the info. EBay is probably the most realistic gauge of price. Cheers Paul
By
Paul Read <paulr@...>
·
#23685
·
|
Re: HP-182C repair
Hello again Erich, the tube is the same I think. yes, that's what I see on the horizontal plates too.
By
Francesco Messineo
·
#23684
·
|
Power sensor calibration system
Hi all, My lab was audited recently by an ISO auditors. I have some old units with me in which i use to calibrate the older version of sensors but now after getting audited by these people , i learnt
By
ruben_rock <ruben_rock@...>
·
#23683
·
|
Re: Options for CISPR 25 EMI Test Instrument ?
Hi Mark, For conducted emissions tests, you will probably use a LISN. The most important piece of equipment you will need is a 11947A to protect the analyzer from tarnsients. Without it, you will very
By
pianovt
·
#23682
·
|
Re: HP8568B Error Correction Routine failure
It could be either. There is a good way to check. Set up the analyzer like John said to view the calibrator. Then, use the "shift-q" (that's a small "q") function which will disable the IF step gain
By
pianovt
·
#23681
·
|
Re: HP8568B Error Correction Routine failure
Looks like a bad 20 dB element in the RF step attenuator ( It has 3 sections: 10, 20 and 40 dB for a total of 70 dB). Steve ________________________________ To: hp_agilent_equipment@...
By
STEVE REEVES <steve_reeves@...>
·
#23680
·
|
Re: HP8568B Error Correction Routine failure
Did you try adjusting the front panel AMPLITUDE CAL on the RF section for -10.00 dBm on the display while viewing recall 8 ? Does it have enough adjustment range above and below - 10 dBm? Steve
By
STEVE REEVES <steve_reeves@...>
·
#23679
·
|
Re: replacement for transistor 1854-0232
Hello, The following web site (http://www.sphere.bc.ca/test/hp-parts/hpparts4.html) show that the 1854-0232 is a 2N3440. Good luck. Victor
By
Victor Fernandes
·
#23678
·
|
Options for CISPR 25 EMI Test Instrument ?
I need to do CISPR 25 conducted emissions tests and would like to leverage the equipment I have. That list includes HP 8590A(with HPIB opt) and 8568B. These are the most modern spectrum analyzers I
By
[email protected] <mark@...>
·
#23677
·
|
WTB: Service manual for Gigatronics 7100 Sig Gen
I'm in need of a service manual for Giga-tronics 7100. I believe this is a 2 volume set. Found a co in UK advertising these but they came back and said they have only vol 1 (no schematics). Thanks.
By
David Woodhead
·
#23676
·
|
replacement for transistor 1854-0232
Does someone has the equivalent for the 1854-0232 transistor. It is in the 178V powersupply of a 5326 nixie counter. Now my nixie are at 217V and I do not like that thought ;-) This is the last fault
By
PA4TIM
·
#23675
·
|
Re: HP8568B Error Correction Routine failure
Because the error is small, it really sounds to me like an IF gain problem rather than a bad attenuator element. I would try to go through the IF calibration procedure in the display section service
By
John Miles <jmiles@...>
·
#23674
·
|
Re: HP-182C repair
I may not be much help -- my 182T might be different than the 182C you have. In mine, the tube has three pins/wires coming out of the bottom; they are the vertical deflection and mesh (focus) pins and
By
erich_schlecht
·
#23673
·
|
Re: HP8568B Error Correction Routine failure
It does :-( CF 20 MHz SPAN 100 kHz RBW 1 kHz VBW 1 kHz REF LEVEL -10dBm ATTEN 10 dB --> Peak at -10.60 dBm ATTEN 20 dB --> Peak at - 7.70 dBm(out screen) ATTEN 30 dB --> Peak at - 7.00 dBm(out screen)
By
ik7jwy
·
#23672
·
|