Thanks guys, I thought it was probably normal, but it doesn't hurt to ask. Another problem I'm having is front panel Focus adjustment. Went through the adjustments in the service manual but still cann

Hey guys, Got a 2465 that appears to work OK so far. I noticed the trace is kind of thick, even with no probes attached. The only way to get a thin, clean trace, is with the 20 MHz BW limit on, Is thi

Give me a email address and Ill send files David

I have taken all the schematics for a 184 that were in two pieces and assembled each schematic into a single document. All PDF files. If anyone is interested I can put the in a ZIP file and Email them

Yeah, I checked and R1112 is 49.9 ohm, R 1111 is 562 ohm, ordered 196 ohm 1% 50ppm resistor, I can replace R1113 without removing A7 board.I will let you know if it works. Thanks for help. David

Sorry Håkan, I didn't understand what you meant, I adjusted dial,but calibration is still off 0.30 at setting of 1.0.,and R1115 is full CCW, I know that's close enough but I'm retired and have time to

With DTM plugged in to A7 board reading is 0.10 ohm

I checked with DTM unplugged from A7 board with Kelvin clip test leads.

DTM max CCW reads 0.085 ohm

Hi guys, I need your help again, I am trying to do horizontal calibration on my 465 but I cannot set step one of calibration, "Check/Adjust Sweep Start and A Sweep Calibration", With Sweep start adjus

Dialight makes a LED replacement. Part number is 507-4859-3332-500F. Mouser has them but the price is $13.19 each. David

I put a 4.7pF MLCC in series with C11 and got the oscillator tuned. It is cycling between 10.000005MHz and 9.999994MHz. How bout that :) It was trial & error, it's kinda strange, I tried 2.5pF and the

Thanks for the information guys, looks like I don't have the equipment or the knowledge to fix the 500MHz output. Not going to buy Nuvistors if I won't be able to check the results. My 465 is a 100MHz

My 465 had the same problem, no sweep, found that tantalum capacitor C1220 on horizontal amplifier was shorted out. Cap C1220 is connected to the -8V supply through resistor R1220. I replaced it with

I don't have an oscilloscope with enough bandwidth to check the 200Mhz or the 500Mhz output. My 465 is 100Mhz and it doesn't have a trigger setting fast enough to trigger on the 200Mhz. My digital sco

Only issue I have left to fix is the 5nS sine output is only 88mVpp. should be minimum of 0.3Vpp, and the 2nS sine output is not working at all. Have 100Mhz 3.7Vpp at input to 2nS board, no output. Ha

I figured it out, To display the 25V time marks from the Marker amplifier on my digital scope I have to set the scope trigger to "Peak Detect". All markers are working now. David

After replacing all filter caps in power supply, supply ripple is below spec on all voltage's, normal 1V @ 50 ohm output Markers are all working. But 25V @ 1K ohm Marker Amplifier is only working up t

Picture 0f 50mS marks is in picture folder "184 Time mark Gen. Needs filter Caps" , can't get oscillator to adjust to 10Mhz, max is 9.999843. I know this is close enough but I am retired and have plen

Thanks Tom, you were right. I adjusted R306 in the 50mS divider circuit and all time marks are working now! Not a bad unit for $96.46 with shipping. And a couple capacitors and PC boards. Thank you to