Finally I have a lot of the optional accessories and scope probes that FLUKE sold for these units. Really nice quality but sadly they never see use in my lab. If there is no serious interest here, I will list the bits in the Forum's For Sale' area where it really belongs, then onto eBay if no home is found on this forum.
Fraser
have you seen a probe that has a blue body with gray cable and a HUGE metal bnc connector that contains a filter or something?
i had a pair with mine and never knew what they actually were!
btw, can you use regular x10 probes on the 97?
What are the graphing capabilities like in these scopes compared to the fluke 120 series ?
granularity in graphing mode how low can they go per division?
The Ni-Cad pack died long ago but it is is very easy to fit four standard Ni-Mh C cells and just add a small brass or copper strip that sits between the positive connection nipple and the charging tab that is below the battery. It is even easier with a tagged cell as the tag is sometimes long enough or may be extended to reach the charging tab.
Fraser
UK
Scottjd,
Thanks for the helpful comments on the battery chemistry best suite to the scopemeter. I just checked and I have four Radio Spares high capacity C size NiCad cells in the meter at the moment and they are tagged so can pick up the charge contact as previously mentioned. No need for a custom battery pack from ebay sellers.
I will be selling my Fluke as I have Tektronix THS-720 and 730 handheld DSO's that I would use in preference to the FLUKE unit. I will leave any battery modifications to its next owner as it is totlly unmolested at the moment
Fraser
Alright, since someone mentioned (maybe others?) does this count?
This is a weird thing, some crossbreed between a scope and a counter. It's in the same case and uses the same battery pack, and inside the processor board, the supply and the display looks very similar too. Even the A and B input channels are more or less the same. Not the C input of course, which also does not display a waveform.
Anyway, here's the beauty:
I had charged the Cameron Sino pack using my bench supply set to 2.82 volts and 200mA doing each half separate until the current dropped (days). Pack stayed ice cold during all of this. Installed the pack today and then used the diode test mode you suggested last time and logged the data with a second meter. First time I tried the pack without charging right from the box after it had sat in the scope with it turned off for a day and it ran for an hour fifteen minutes.
This time it was not much better. Looks like it died at 6279 seconds. No where near the other batteries. So 584ms @ 1.744 hours gets us 1000mA/h?! These things can't be that bad but I'm starting to believe some of the reviews people wrote about a half hour run time.
Wow, well I just set up one of my benches as the charging station and broke all all my different chargers.
The only charger notmin the picture is the lead acid maintainer/charger for my sealed 12V and sealed 6V batteries. I use these if I need more current then I can generate on a power supply. Like testing an inverter.
One is a hobby charger, that has a discharge feature and tracks the mA used the skame as it does when it is charging. I created a jumper wire with two earth magnets to jump the pack and will charge and discharge a few cycles. I know my pack is only 3 months old.
I will then set the discharge rate to simulate the draw on the 96B around 260mA (I think that is what I measured) current drain and see how long it holds and how much power this pack is really storing.
I'll measure my drain on the 96B again to confirm.
I can do the same with the drain based on your 97, what was the drain you meter uses?
Now you've done it. It said no warranty if label is removed.
They don't want people looking inside and decoding numbers and find out the truth that they are dishonest with the total capacity.
Now you've done it. It said no warranty if label is removed.
They don't want people looking inside and decoding numbers and find out the truth that they are dishonest with the total capacity.
Even worse now. Snipped the strap to not put any stress on the cells. Code is the same on all four. Not seeing any other markings on them.
Here is the code on mine.
Charger is still doing it's thing. Was hoping to shove them back in the scope and catch some sleep. Could be a bad cell and why I have been watching them on the charger. They all seem to be at roughly the same voltage. Nothing getting warm. This charger is fixed at 1A charge and 300mA discharge.
Can't believe that low current fixed voltage did anything to it. I wouldn't snip yours apart just yet. Let's see if the independent charge does anything for this pack. Worst case, it becomes a flashlight pack....
Ok, so the numbers are different. Now we just need to crack the code.
I forgot to ask, did you measure each cell voltage before charging the cells separately after you cut them apart?
Just checking in on the battery test. Almost 5 hours now and so far it's looking good!
One thing that I am finding is when I had bought this PC with Windows 10, NI had dropped support my GPIB Ethernet controller. I had sniffed the bus and just talk with the controller directly now. This works so much better than it ever has.