How to create bode plot for Fishman Fluence Help

[gpdb]

Hi all,

I'm trying to figure out how to create a bode plot for Fishman Fluence pickups. I'm a bit concerned about messing around too much because of the 9v in the circuit; I don't want to damage any of my equipment in the process of trying to figure it out. Has anyone tried this yet? I saw Antigua did an EMG, but this wiring seems different. I have mostly the same equipment that Antigua's main post recommends. I'm using a Velleman PCSU200 oscilloscope and Ken Wilmott's Integrator. Lastly, if anyone knows if I should or shouldn't be worried about the battery hurting my equipment, that would be really helpful. Here's the images of the pickup and the wiring guide:








I purchased some 9v connectors with alligator clips to be able to connect the battery into the circuit. From when I was learning to wire these previously, to change voices you just need the specific voice wire in the circuit. Voice 2 defeats the default Voice 1, and Voice 3 defeats Voice 2. So here's what I'm thinking for specifically the bridge pickup, for voice 1:

- Red (9-18v) connected to the red (+) of the battery connector
- Black wire from the pickup has a shield and a white wire inside; white wire maybe to the Integrator clip? It seems like the white wire and ground are similar to a South Finish with bare wire.
- Black (-) wire from the battery to the other clip of the integrator?

Then for the different voice, just connect the black wire with the voice 2 or 3 wire.

Any help would be appreciated, I'd really love to see what these look like when plotted.

[stratotarts]

First, 9V DC on the input test leads of the V5.9 integrator will not damage it. So don't worry about that.

I can't imagine, though, why there would be 9V in any measurement configuration. If the black shielded wire is the pickup output, as it appears to be, then the integrator leads should be connected:

ground (black/brown) -> black cable shield

input (red) -> black cable inner white wire

You have to power the pickup normally, as it is an active pickup.

I am assuming you wish to make a normal output measurement, not something like a direct reading of one of the internal coils.

[gpdb]

Thanks for the help Stratotarts! I was able to create the charts with:

White output from pickup > Integrator Red
Ground output from pickup > Integrator Brown

Then for the battery, I did:
Red output from pickup > Red wire on 9V
Black output from 9V wire > ground

I'll post a separate thread showing images of what I did and the charts I created. Measuring actives vs. passives is going to be a super cool piece of data to have. 

[antigua]

I measured a Fishman Fluence bridge pickup with all the same methods as usual guitarnuts2.proboards.com/thread/9480/fishman-fluence-modern-sustainiac-response , but I measured out from the output jack of the guitar, which is no problem since it's a low Z circuit. It seems to me they really copied the EMG 81/85 and vintage PAF (uncovered) EQ fairly closely.