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Live Controls Zoom Sensitivity Probe "Best Gain" does not display

w4uvvjw

New member
My V3i Expert Menu settings:

Program: slightly modified version of C&J
Bottle Cap reject: off
Hot Rock: off
VDI select by: VDI number with selected tones for different select VDI ranges
Icon Table: Relic
Sensitivity: Varies from 2 to 10...typically 4
Tx Boost: off
Discrimination: 75
All Metal: 55
VDI Audio: Program defaults except for custom edit
Search Audio: Stereo mixed
Pinpoint Audio: VCO and Rachet
Frequency: 3
Frequency offset: 0
Ground Tracking: Autotrac
Soil type: Normal
Search filter: Normally 5 or 7 mhz.
Recovery delay: 3
S.A.T: 15
Analysis: Match search
Configure: program defaults
Live search screen:
Pinpoint: meter
Search: Spectragraph
Analysis: Sizing
Status Line: On top
Size: small
Show: battery
Live controls:
Size: small
Style: buttons
Specific:
Audio Threshold
Audio Level
Frequency
Sensitivity (Rx Gain)
Target Volume
Search Audio
Analysis Display
Search Display
Pinpoint Display
Tracking
Wrap: checked
Menu:
Size
Expert Only
Wrap
Reenter at Top
Loop selection: Super 12/300
Area:central Va
Type of soil: varies from clay to fair topsoil

1. Before purchasing the V3i I read and downloaded and printed all of White's website V3 documentation for future reference. In the Spectra V3 Field Guide on page 5 I especially liked the Live Control Expert Menu user selection feature in "Sensitivity Probe Zoomed". Under the "LIVE CONTROLS-SENSITIVITY" and "PROBE" two on screen graphic displays are shown the first in the non-zoomed and the second with the zoomed selection. Accompanying sidebar text displays "Percentage indicator of signal capacity-to-noise ratio, and a Best Gain calculation for max performance. Signal %= Return from Ground, Noise %= External electrical and ground noise and Best Gain= RX Gain reasonable level (considering all other current settings). With the loop on the ground, note "Best Gain". Adjust RX Gain to match". A section header above "LIVE CONTROLS-SENSITIVITY" displays "More in "Complete Owner's Guide". (See Attachment 1).

2. I have used my V3i for approximately 6 weeks and have read and reread the "Complete Guide to the Spectra V3i" (Owner's Manual) but cannot locate any discussion of the zoom Probe "Best Gain" feature display under "Sensitivity". The Owner's Manual Page 48 discussion of Expert Menu "Sensitivity" does not show a "Best Gain" component display nor discusses it. (See Attachment 2)

3. What V3i setting(s) do I have to change to activate the "Best Gain" component display on the Live Controls-Sensitivity zoom Probe selection? Currently only "Signal" and "Noise" display and not "Best Gain"? Tnx.
 
The best gain was a feature on the original V3 and is not on the V3i. Many of us found that it was not that accurate and the best way to adjust the Gain is to run it up until it starts to get a bit noisy and then back it down one or two numbers.
 
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