[size=large]Teknetics T2 Classic
T2 Metal Detecting to a Higher Power
• Large LCD Screen with 0-99 Numeric Target ID
•Straightforward Menu-Driven User Interface
•Trigger Actuated Target Pinpointing with variable audio pitch
•Double Filter Discrimination Modes For Searching In Trashy Areas
•Trigger Actuated FASTGRAB™ Instant Ground Canceling with manual override
•Manual Ground Cancellation Option
•Continuous Ground Monitor - Ground Mineralization Bar Graph Readout
•Waterproof 11-inch Open Frame Bi-Axial™ Searchcoil Great for Highly Mineralized Soils.
•Renowned Target Separation Capability Detects targets at extreme depths
• Low Operating Cost - More than 40 hrs. with 4-AA Batteries
•
The Discrimination Mode is used to eliminate from detection trash metal objects such as nails, aluminum foil, or pull-tabs. The searchcoil must be in motion for metal objects to be detected. Discrimination incurs some loss of sensitivity to small or deep objects.
SENSITIVITY This controls the electronic gain, and is adjustable from 1 to 99. Unlike the All Metal Mode, the Discrimination Mode is designed to operate silently. If you hear noise when there is no metal present or when the searchcoil is not in motion, reduce the Sensitivity setting until the machine goes quiet. NOTE: there is no interaction between the sensitivity settings of the All Metal and Discrimination Modes.
DISCRIMINATION LEVEL This is adjustable from 0 to 80, and controls the range of objects to be eliminated from detection (silenced, discriminated out or rejected). Objects with numeric values below the selected discrimination level will not be detected. NOTE: the numerical range that pertains to each class of object is printed at the top of the visual display. To eliminate iron, a setting of 40 is usually about right. A setting of 80 will eliminate aluminum trash and zinc pennies, but nickels will also be lost.
NUMBER OF TONES (# OF TONES) This menu selection offers the user a choice among several different methods of audio discrimination to accommodate a variety of search conditions and personal preferences. These methods differ in the way the signals are processed for analysis, and in the number of audio tones used to identify different target types.
The detector has two ways of processing signals for analysis — continuous and sampled.
Continuous Processing The detector processes a continuous signal response throughout the duration of the sweep of the searchcoil over the target. All characteristics of the target are audibly communicated to the user. Continuous processing gives a good feel for the size, depth, and shape of the target. Continuous processing is preferred, for example, for relic hunting, especially in plowed or rocky ground.
Sampled Processing Sampling takes a snapshot of the signal at its strongest point. This compromises the feel of a continuous response, but provides for more accurate target identification. Sampling also eliminates confusion caused by changes in tones during the sweep over the target. Sampling is preferred, for example, when coinshooting in areas where there is aluminum trash.
The “# OF TONES” selections are: 1: Single Medium pitch tone. Discrimination is continuous, not sampled. Good for use in plowed or rocky ground.
1+: Medium-to-High pitch tone varying in proportion to target signal strength. Large shallow objects will produce a squeal. The variable audio pitch provides you more information about the detected object, but some people find the sound on strong signals too annoying. Good for use in plowed or rocky ground.
17
2+: Two tones. Similar to 1+, except that iron produces a low-pitched tone regardless signal strength. The discriminator is continuous. However, the iron tone feature relies on a combination of continuous and sampled processing. Useful if you want to hear all targets.
3: Three different audio tones. Iron produces a low pitched tone. Aluminum trash and zinc pennies produce a medium tone. Most other coins, including nickels, produce a high tone. A combination of continuous and sampled processing reduces the breaking up of the tone due to deep objects, or multiple objects close together. This method is usually preferred if you are searching for coins in a trashy area. Most users will set the discrimination level below nickels, at about 50, and dig only objects that produce a consistent and repeatable high tone. NOTE: with this method, some steel bottle caps produce consistent high tones, similar to coins (see section on bottle cap identification).
3b: Bottle Cap Mode Similar to 3, but modified so that steel bottle caps will usually produce inconsistent, or non-repeatable, tones and broken sounds. There may be a slight reduction in the ability to separate adjacent targets. Use this method in areas with a high concentration of steel bottle caps. Also refer to p. 25 for sweep techniques to aid in the identification of steel bottle caps.
4: Four different audio tones This method is similar to 3, but with a fourth medium-high tone for targets in the numeric range of 73 to 79. This four-tone system is useful for searching in areas where there may be very old coins which register in this range.
dP: Delta Pitch This method produces a tone whose pitch varies in relation to the visual ID number — the higher the ID, the higher the pitch. Good for relic hunting. Sampling is mostly continuous. This method is also useful in areas with a high concentration of steel bottle caps. Coins will produce a fairly constant pitch as you sweep back and forth. Bottle caps produce inconsistent tones, often with a squawk at the beginning of the sound.
What You See vs. What You Hear The visual Target-ID displayed on the LCD is based entirely on sampled processing; the number displayed represents the snapshot. When using these different “# OF TONES” methods, the detector’s audible response may differ from the visual. Using these methods, there is not a 100% correspondence between what you see and what you hear, especially on buried targets where ground minerals influence Target-ID and audible response. By making the audio and visual systems independent, the T2 allows each system to do what it does best. The audio is optimized for quick response and target feel, whereas the visual system provides the best numeric resolution of Target-ID.
36[/size]
