开云体育

My down converter is something i use a lot with my 8640B sig gen when I? need a signal below 450 KHZ.? Unfortunately a clumsy accident killed the output.? The failure was traced to Q1 and Q2 on the

If the serial numbers match, and you still get the fail message, I wonder if that indicates there's actually a hardware problem with your analyser and it can't complete the self-cal properly. These

I have an E4402B that shows options 1DR installed, but it doesn't seem to work as no BW smaller than 1 kHz can be selected. See picture. What can I do to address this issue? Thank you and Best,

Hi Andrew: This is the procedure I used: https://www.keysight.com/us/en/assets/9018-40043/installation-guides/9018-40043.pdf It looks to be identical to what you and anther poster has given me within

From the service manual on page 3-5 A9 Switch Positions 1. Remove the power line cord from the analyzer. 2. Set the analyzer on its side. 3. Remove the two lower-rear comer bumpers from the bottom of

A bit of a late reply, but I hope it is still of value. The 1854-0441 was used as Q4 on the A17 boards for instruments with serial number prefixes in the range 2410A to 2532A. It is a general purpose

I believe there's a jumper or a dip switch that has to be set correctly to allow the eeprom to be written. The instructions are in the service manual. [email protected]> wrote:

All: I posted about this over at the EEVBLOG, but I figured I should post it here too. I am having a problem loading the Harmonic and Time Domain Options (OPT2 & OPT10) for my HP-8753E. I have a

The 8640 can deviate 10.7 if you mix it down with e.g. the 11710 Down Converter. Or even any generator and a mixer; there’s an app note for that, AN171-2. Dave Wise Sent: Thursday, February 10, 2022

I am interested in this calibrator plug in as well. I have three of these wonderful scopes, and one needs to be recal. Best, Francesco K5URG

To do a comprehensive job of aligning FM tuners you really want a generator designed for that job - especially if you want to verify or align FM stereo multiplex decoders. One example of a relatively

Hi, Recently I was using my 8645A for tuner alignment (a Mcintsh MR71 tube tune). I tried all sorts of methods - the 8645 can sweep the FM range with an FM modulated signal on top of it. Finally, for

Here the best i can do , i dont have pro tools https://postimg.cc/MX9MrCRp https://postimg.cc/DWC3KPcL front and rear

Hi Dave limits needs to be accurate as the level is used in doublers too low does not work. best regards Peter ________________________________ Fra: [email protected]

Brian Hope yours is as easy to fix as my loaner unit. Traced the internal and external count through the counter chain (was worried the ECL chips had failed but they are all good) up to the counters

Peter The first fault was U700 and the series pass transistor on U700 supply that was gone. Replaced that and all the alarms cleared. The 600MHz is still a bit low but comparing the device 600MHz and

Wow a bit ordinary for HP. I am loaning one of those nano spec an that proports to go to 4.4GHz and check the LO and the output of the 1st mixer. Then I will go back in and have a closer look at all

Hi, Just for completeness I will share a couple of pictures of the second converter in a 8563A that I fixed. In the first picture, it was not easy to see the issue: [image: 20180207_223009_s.jpg] I

Hello in 90% cases of that failure your U501 in A15 is dead. It is a 18-19dBm MMIC . Not critical use ERA5 or MSA0586 etc. also if your 300Mhz Cal output is bad it that failure. They look ok still if

Hi Bruce, Although I've used the 8640 for FM alignment on occasion -- with great results -- I wouldn't want to have to use it on a regular basis. The FM modulator doesn't support a large enough