Secondary Ignition Setup Hantek 1008c and HT25 Part 4
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- เผยแพร่เมื่อ 1 ก.พ. 2018
- I set up both primary and secondary leads to compare them. As long as the secondary is kept at or below 200mV or 2kV ( at 10000x ) detail remain pretty good.
- ยานยนต์และพาหนะ
Thanks very much, just what I needed to know for my new HT25 lead.
I could be wrong, but to me it looks like maybe your trigger is too low and when you do the snap throttle the hash gets up to the trigger and either the pc or the hantek got confused and crashed the computer. I would set up another probe to trigger on TDC #1 then show all cylinders on one screen using the coil wire from the distributor cap if it's available. The very first trace you had would have shown all the cylinders....just needed a trigger on #1.... of course that all depends on your vehicle if you have a distributor or not whether you can show all cylinders at one time. I'm still trying to understand what the waveforms mean, and just ordered a HT1008c today. Distributor cap, HA, guess that shows the age of stuff I work on.
is there a lean mixture showing on throttle snap? since coil oxilations are matching the kv spike?
U should always use block ground when testing secondary ignition as the plugs are screwed into the block itself and the block to battery grounds may not be ideal .
The hantek will do ignition but it isn't very fast and has a small buffer
I'm having the same problem. I thought it was just my machine. I usually use ground on the battery but maybe I'll try a block ground.
Best thing I can recommend is to keep the leads away from the distributor and plug wires, since the leads don't seem to be well insulated and during a throttle snap allot of EMI is generated which gets picked up by the leads and transmitted into the computer.
Just picked up a 1008C and did some playing around with it, running into the same issues with lockup with the lead clipped directly to the negative battery post.... wondering if you've made any more developments with this scope and software?
Nope, sorry. Just keep the leads as far away from the distributor or coil as possible, that seems to help a bit
Looks like your sample rate drops to nothing during the snap throttle & especially with 2 channels running. Looks like you are doing 1 FPS at those times. Does restarting the software, scope and/or computer help with this? That isn't how the scope should be working. What is your memory buffer set to? Have you looked at your computers resource monitor while you are running the scope? The 6074 that my neighbor purchased would begin to consume all the computers memory. The longer it was running, the more memory it used. The computer would lock up if the scope was left running for any length of time (over 2 hours). The computer would have to be restarted to get it going again. Tried it on several computers & then sent it back. While it was working, it would slow down during fast pattern changes, similar to what yours appears to be doing.
I don't think the scope using up all the memory is an issue here since the scope crashed the whole computer in between each of these videos. It's a pretty powerful computer, Lenovo x220 with a dual core i5 and 8GB ram. It seems to me like the 1008c is very sensitive to the quality of the ground and to strong electromagnetic interference when using capacitive probes like the HT25 or the cc65. I made this other video th-cam.com/video/_uzVFn-oT8c/w-d-xo.html recording coil primary and current ramps. I used the cc65, but I was clamped on a jumper wire I put in place of the fuse under the dash, where there's no strong EM interference, and the primary probe ground was hooked directly to the negative battery post. You can see that even during throttle snaps it's very smooth, with a descent quality signal, even though I've got two channels running. I'm going to experiment a bit more with this, but I think I may have found the root cause of the problems people are having.
It look like this was about 2 weeks but anyway look at your menu you select Vehicle then you have a choice for selection after that you will see that have your screen already set up I believe you have a bad setting.
Is your windows a home or professional version? My scope won't run on anything but a windows pro machine
Windows 7 Pro
your settings are wrong. Is it on purpose for discouraging people from buying hantek products? or just you are a beginner who dont know what are doing?
Ray Rodriguez
8 months ago
It look like this was about 2 weeks but anyway look at your menu you select Vehicle then you have a choice for selection after that you will see that have your screen already set up I believe you have a bad setting.
the scale setting for 1x or 10000x does not affect the shape of the waveform it only affects the numerical scale displayed on the side of the waveform. If you understood how oscilloscopes work you would know this.