Related Manuals for Whites TDI
Summary of Contents for Whites TDI
- Page 1 White’s Pulsescan TDI Field Manual HANDS ON INSTRUCTION FROM THE PROS TDI F IELD ANUAL ➟ ROSPECTING ➟ ELIC ECOVER ➟ & B EACH...
- Page 2 White’s Pulsescan Field Manual...
- Page 3 White’s Pulsescan TDI Field Manual White’s Electronics is proud to acknowledge the people who contributed to this Field Manual, and the development of the TDI ... Jimmy “Sierra” Normandi - Jimmy has spent the last 30 years distributing White’s Metal Detectors. He has written about, inspired, and taught the rest of the world how to prospect for gold, and find America’s and Europe’s treasures. “Digger” Bob Van Camp - Digger Bob lives in the heart of California’s Gold country, and works full time as a logistic manager, and part time as a metal detector Dealer. As a part of TDI’s test team, his expe-...
-
Page 4: Quick Start Settings
White’s Pulsescan Field Manual QUICK START SETTINGS Easy Ground/No Variable Audio Desired - For use in ground where the threshold hum remains steady and smooth as the search coil is swept over the ground with Gnd Bal Toggle off indicating that the Pulsescan TDI can be used without Ground Balance as the pulse circuit itself can handle the ground without ground balancing. All targets will sound the same with no Variable Audio (best depth). Beach Relic Gold Hunting Hunting Prospecting Gnd Bal toggle Gold Prospecting - Ground Balance Ground Balance Control is not operative Best sensitivity to small/medium Conductivity toggle Conductivity select is not operative nuggets and small gold jewelry Freq Adj... - Page 5 White’s Pulsescan TDI Field Manual Easy Ground / Variable Audio Desired - For use in ground where the threshold hum remains steady and smooth as the search coil is swept over the ground with Gnd Bal Toggle on but no setting could be found on the Ground Balance Control indicating that the Pulsescan TDI can be used without manual balancing, but with the Ground Balance control set to the mandatory levels shown the chart below. All targets will respond with the Variable Audio = low/high tone. Beach Relic Gold Hunting Hunting Prospecting Gnd Bal toggle Ground Balance Gold Prospecting - Best sensitivity to small/medium Conductivity toggle User adjusted per manual under Explanation of Controls nuggets and small gold jewelry Freq Adj 12 NOON 12 NOON 12 NOON Beach Hunting -...
- Page 6 White’s Pulsescan Field Manual USER GUIDE TO PROSPECTING by ... Jimmy “Sierra” Normandi The TDI is a complex piece of electronics..but it is definitely not complicated to use. In fact the user instructions can be boiled down to a very few important points of information. The mastering of the real potential of this instrument will come from experimentation in the field and experience. Hopefully, enough people will ultimately contribute their particular experiences to build a comprehensive field manual. Quick Start for Prospecting for Gold: The following settings will handle most all ground conditions 1) Set GEB Toggle to ON (Ground Balance & Variable Audio Activated) 2) Set Ground Balance Knob to 8 (this will balance most all ground) 3) Set Pulse Delay Knob to 10 (10 uS best for low conductive gold) 4) Set Gain Knob to 6 (may be increased as long as audio is stable) 5) Set Power Toggle to ON (this is a locking toggle, pull &...
- Page 7 What is the Conductivity Toggle and Why did you set it at Low ? I set the conductivity at low so you could get started right away detecting and find the least amount of trash items. Most gold nuggets will fall into the low conductive category, and only small pieces of trash will be found. Boot tacks, birdshot, 22 caliber shell casings and small pieces of lead bullets along with small bits of iron will fit this category, and give a high tone like gold. By setting the toggle to low, the high-conductive targets will not be heard. Since most of what you are looking for falls into the low-conductivity category, you can avoid a large part of the trash. You will note that there is an All position on the conductivity toggle. If you want to test an area to see what kind of targets exist, you can set the the toggle at All. You will hear both high tones and low tones. You can decide to dig or not to dig. You will learn by experience. You will never miss any gold this way, so when in doubt DIG! You should also start out at low, because when you choose either high or low rather than All, the audio will be much quieter. Do I have to operate the TDI with Variable Audio with low tones and high tones ? If you wish to operate without the Variable Audio feature you will hear all targets with the same audio sound. They will sound with a high tone. You will have to find some other way to decide whether to dig or not, however this not a bad way to hunt, particularly if the targets are few and far between. You wont miss anything and there is also another bonus. The Pulsescan TDI will hear targets deeper. However, there is a catch. When you turn off the GEB toggle, besides turning off the Variable Audio low and high tones, you are also turning off the GEB, which is the capability to ground balance. You then have to rely on the ability of the pulse circuit itself to handle the ground minerals. This is possible as long as you are not detecting in very bad ground. Not all ground is heavily mineralized. It is easy to find out if you can do this. Turn Off the GEB toggle and sweep the search coil over the ground. If you can do this without hearing all kinds of ground noises and false signals then you are able to hunt. You can try to reduce the Gain a bit if there is mild noise. However, if you have to lower it too much, you lose the advantage of the extra depth.
- Page 8 White’s Pulsescan Field Manual USER GUIDE TO PROSPECTING by ... Digger Bob GETTING STARTED - The new Whites TDI has so much potential and variables, that trying to come up with a hunting technique that works the same every time is almost impossible. But having said that, here’s how I get started: GAIN - 6. Start here and increase later if you can. PULSE - 10 GROUND BALANCE SWITCH - ON GROUND BALANCE - Most gold bearing ground is mineralized and I have found just about everywhere I have used this machine, the ground balances somewhere between 8 and 9, even pure serpentine. Very mild clays or slate may balance out around 3, but this is the exception. I start with the Ground Balance at 8 and pump the loop up and down to make sure. Then I can make a small adjustment to get it exact; no change between the air and ground. THRESHOLD - Usually about straight up. Set to your comfort level with headphones, low and steady sound. FREQUENCY - Straight up, 12:00. I’ve not had a situation yet where I had to change it.
- Page 9 White’s Pulsescan TDI Field Manual over them. In the Low setting, a long nail will give a good sound from one direction and no sound, or a choppy sound, from a 90 degree angle. So, pass over all targets from different directions and see if the sound changes. Small nails, partial nails, or nails that are straight down in the ground will give a good sound no matter what you do. But there is one more test you can try before digging or walking on. Increase the Pulse Delay up to 17.5 and pass over the target. A lot of small iron targets will go away at this setting. You may hear a choppy or broken sound but a nugget will sound clean. The response will be softer and weaker on gold because you have increased the Pulse hence decreasing the sensitivity to low-conductive targets. This is most effective on shallow targets as most iron is near the surface. Deeper nuggets may also disappear so I would dig any target that give me a soft mellow signal. As with any metal detector, there are no foolproof methods of discrimination. Those of us who have coin hunted have learned the difficulty of trying to determine a gold ring from a pull tab. The same rules apply here, when in doubt, dig. If you want to find everything, dig everything. Nugget hunting is the most challenging pursuits one can undertake with a metal detector. There are so many wierd signals that come from unknown sources and the combination of minerals, salts, and man-made metal in all its forms is staggering in the types of signals they can generate. More tips will be coming as more people get their feet wet in the field with this detector. Digger Bob...
- Page 10 White’s Pulsescan Field Manual USER GUIDE TO RELIC HUNTING by... Keith Zorger George Kinsey Bob Buttafuso Relic hunting with the Pulsescan TDI is easily accomplished. With manual ground balance, two tone target ID, three position conductivity switch, and Revolutionary Dual Field Coil, hunted out sites will come alive again. In areas of extreme mineralization, relics will be easily found, not only by the seasoned Professional, but by serious Hobbyists alike. Let’s take a moment to look at the controls. Understanding the controls of the Pulsescan is critical to your success. Easy Start Up For Relic Hunting: 1) Set the GEB switch to ON 2) Set the Conductivity switch to “ALL”. 3) Tune the Threshold to a nice smooth hummmmmmmmm! 4) Set the Pulse Delay to 10uS (You won’t miss the small desirable relics at a delay of 10-12uS. 5) Set the Gain at 6 (12:00 0’clock). 6) Ground balance the detector. (Normal ground balance at 10 uS should be 8-9, but these results may vary by location) Ground Balance settings are not dependent on which coil is used. 7) Adjust the Frequency control if there is audio interference (warble) i.e. from power lines or another detector. Otherwise leave it at 12:00 o’clock. 8) Off you go.
- Page 11 White’s Pulsescan TDI Field Manual More On Tones - It seems we will be able to get more information from the TDI responses if we listen to not only the tones produced, but also the way the actual signal starts and stops. words, the less iron a target has in it, Iron signals tend to ‘draw out’ more than non-ferrous responses. In other the sharper the response will be. Na ils and other long iron objects often give a double low “blip” in one sweep direction and a single, much weaker single high tone in the other direction. For non-ferrous targets we are looking for a “CRISP” edge to the signal as the coil approaches and leaves the target. Pulse Delay Facts - Be sure to set your Pulse Delay prior to Ground Balancing. Lower delay settings are more sensitive on small targets. Set delay as low as possible. For relic hunting this control should not be set over 17.5 uS. If a balance can’t be achieved, say at 10uS, then increase the delay slightly until it can be achieved. Keep in mind that adjusting the delay will have a direct effect on how the GEB control operates. In general, when the Pulse Delay is advanced, the GEB control will have to be reduced. Example: A nail may be ignored at 5 with the delay at minimum, but may be ignored at 3 or less with the pulse delay advanced to 17.5 uS. Expected Pulse Delay/Ground Balance Relationships - Pulse Delay = 10 uS Ground Balance = 8-9 Pulse Delay = 17.5 uS Ground Balance = 6 Pulse Delay = 25 uS Ground Balance = 3 NOTE: Depth will be lost at the low 1.5 GB setting, but it has the advantage of rejecting nearly all iron junk.
- Page 12 White’s Pulsescan Field Manual Threshold Facts - Setting the Threshold either above or below the ‘chatter’ is beneficial. When setting above so you hear a constant hummmmmm, be sure not to advance the control further than that set- ting or smaller targets may be camouflaged by the noise. When setting the Threshold just below the chatter be sure to keep it barely quiet. When operating with this method, slower sweep speeds will still pick out deeper relics. NOTE: If operating quietly, be sure to Ground Balance the PulsescanTDI prior to reducing your threshold. Advanced User Technique - After you do your initial ground balance and set up try this – Set the Conductivity switch to LOW. Then turn the Ground Balance Control to the (2-4) range. Depth on low con- ductivity targets increases dramatically. Now, set the Conductivity switch to HIGH. Then turn the Ground Balance control to 9 or 10. Depth on high conduc- tive targets increases. Finally, set the Conductivity switch to ALL. Then turn the Ground Balance control to 6 (dead center on the dial). Depth on both high and low conductors is improved. Targets - HINT – When the PulsescanTDI gives a LOW tone, placing the coil on the ground beside the target and then SLOWLY moving over the target will often cause the WOOWOO of deep big iron items to become more evident. HINT – Once a target is located, turning down the gain until it almost disappears will give a great indication of prob- able depth. The lower you can turn the gain, the more shallow the target. This should greatly reduce target recovery time and hole size. HINT – Like VLF detectors, shallower targets will give a stronger signal than a deeper target which produces a weaker response. Gain Control - Extensive testing with the PulsescanTDI has not indicated a positive effect when advancing the Gain control past 7-8.
- Page 13 White’s Pulsescan TDI Field Manual USER GUIDE TO BEACH HUNTING by... Greg Moscini Beach Hunting Settings - • Ground Balance ON • Conductivity Toggle set to ALL • Frequency Adjust set to 12 O’clock Noon • Set the Gain initially at minimum • Set the Threshold to a Steady Smooth Tone (like a mosquito buzzing in your ear) • Set the Pulse Delay at 10 uS (Best Sensitivity to All Metals) • Set the Ground Balance Control 6 or High Noon • Now, raise the Gain up as high as possible as long as TDI operates stable. Reset the Frequency Adjust as needed or reduce the gain. It should be noted that even with the Gain down all the way, you’ll still hear very deep coin targets, but their response would be attenuated due to the lower gain. The benefit of lower gain is increased smoothness, stability and in some cases with coin size or increased smoothness, stabiity and in some cases with coin size or larger targets, one can better estimate the depth of the target. Comment: After hunting a number of salt-water beaches I ran into the following target scenarios. HIGH Conductive Coins (Quarter, Dime, Penny) - Initial Target Response: Low Audio Tone…. cross sweep the target looking for a coin-size and shape response. If your hearing more than a single continuous response over the target, lift the loop up a couple of inches and repeat the process or with your free hand, reach over and turn the large Ground Balance control CCW (to the left) and re- scan the target. Coins should STILL respond with a LOW Tone. If the Audio Response turns to a HIGH Tone, the...
- Page 14 White’s Pulsescan Field Manual USER GUIDE TO COIN HUNTING by... Greg Moscini Yes, the Pulse Scan TDI makes a wonderful Turf Detector: The aforementioned beach tips like wise apply when running the TDI at 10uS on the pulse delay. Unfortunately, the parks have a high concentration of trash items, par- ticularly shards of aluminum and foil that sound off strong at 10uS, even with the TDI’s Gain set low. • Ground Balance at 2 to 3 (8 to 9 O’Clock) • Pulse Delay at 25 uS • Gain low from Minimum to 12 O’Clock High POWER TIP - At 25uS pulse rate, and a lowered Gain at minimum or slightly elevated, the Pulse Scan TDI will ignore most small low-conductive foils and aluminum shards that would normally give a stronger high tone response at 10uS. This is not to say that you couldn’t run the TDI at 17.5 uS. Nickels and gold rings will still be detected deeply. The ability to ignore most of the common trash that will be a nuisance to a VLF Detector which has to rely more on Tone ID and Visual ID which becomes less accurate beyond 4”, gives the TDI a big advantage over standard metal detectors. POWER TIP - • Pulse Rate at 10 uS • Ground Balance at 2 to 3 (8 to 9 O’Clock) • Gain set as high as possible for maximum Signal Response • Conductive Switch to High Conductors Only. Comment: Using this tip, the Pulse Scan TDI will ignore all the nuisance low-conductive target such as foils, aluminum tabs, steel bottle caps and because of the Pulse Rate and Ground Balance position, the normally high-conductive rusty nails turn and become low conductors like aluminum and foil and are subsequently ignored. The TDI will hear those deep Silver Coins, Quarters etc without having to listen to 90% of the other responses which are usually low conduc- tive.
- Page 15 White’s Pulsescan TDI Field Manual...
- Page 16 White’s Pulsescan Field Manual White’s Electronics, Inc. 1011 Pleasant Valley Road Sweet Home, Oregon 97386 USA www.whiteselectronics.com Part Number 621-0508...
Need help?
Do you have a question about the TDI and is the answer not in the manual?
Questions and answers