Assessments - 3, GPA: 4
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When the voltage magnitude is sufficient to impair the accuracy of the ohms measurement, only voltage will be displayed. If the voltage is AC, a sine wave will be visible on the display. If a high AC voltage is detected, a rapid beeping tone will be heard. Page 6 Press to select Trace mode. Press again to select one or all of the four frequencies. The display will alternate between displaying the selected frequency and the output signal current. It is best to choose the lowest frequency for direct connect with far-end ground and a high frequency for direct connect with no far-end ground. Press to select high output level for longer tracing distances and deep cables. Transmitter setup is finished, now go to LOCATING A BURIED CABLE - RECEIVER SETUP (PAGE 10). Page 7 DYNA-COUPLER METHOD Cable Path Connect the Dyna-Coupler to the Transmitter front panel jack using the coupler cable. Clamp the Dyna-Coupler around the cable below any bonds just before cable enters the earth. The jaws of the coupler must fully close. Press to turn Transmitter on. Press again to select 8 kHz, 33 kHz or 133 kHz. Select high output level by pressing . Transmitter setup is finished, now go to LOCATING A BURIED CABLE - RECEIVER SETUP (PAGE 10). Page 8 INDUCTION METHOD Place the transmitter on the ground over the target cable with the lid hinge in line with the cable path. Press to turn the Transmitter on. Press again to select either 33 kHz or 133 kHz. For greater tracing range, select high output level by pressing . Note: If the Receiver is less than 15 meters from the Transmitter, it can pick up signal through the air. For best results, keep the Receiver away from the Transmitter by at least that distance. Transmitter setup is finished, now go to LOCATING A BURIED CABLE -RECEIVER SETUP (PAGE 10). Page 9 LOCATING A BURIED CABLE Receiver Setup Note: Key descriptions can be found on the side of the Receiver. Press to turn the Receiver on. Press to select the 50/60 Hz power frequency (see Selecting Passive Power Frequencies, page 12) or LF for passive locating; otherwise, select the same frequency as the Transmitter. Note: The Receiver is automatically set to Special Peak mode when LF is selected. No other modes are allowed in LF frequency. Press to adjust the speaker volume as needed: off, normal, high, or high-expanded. The high-expanded setting causes the audio to cut off below a certain threshold. Press to select a locate mode (Peak , Null , or Diff ). To select Special Peak mode: from Peak mode, press and hold then press to toggle between Peak and Special Peak modes. While in Special Peak mode, the peak flag will flash. Note: Peak, Special Peak or Null mode may require re-setting the Receiver gain. Press when the bar graph remains either fully open or fully closed. This is not necessary in differential mode since the unit automatically adjusts the receiver gain. Page 10 About Trace Modes Peak: In this mode, as the antenna crosses the cable, the Receiver speaker volume increases to a maximum and the bar graph fills from both sides toward the middle. As the antenna moves off the cable path, the speaker volume decreases and the bar graph opens. Peak with High-Expanded: While in Peak mode, press to select High-Expanded (the highest setting). Speaker response is cut off as the antenna moves away from the cable. Null: In this mode, the signal is a minimum directly over the cable and is maximum on either side of the cable. The speaker volume and display signal strength correspond to the signal being received. In the normal bar graph display mode (Null flag flashing) the bar graph opens at low signal strength and closes at high signal strength. In the inverse Null bar graph display mode (Null flag is on solid), the bar graph closes at low signal strength and opens at high signal strength. Differential: In this mode, the Receiver provides an indication of the relative position of the cable to the Receiver by displaying right or left arrows (the arrow points toward the cable). The bar graph increases to a maximum as the Receiver antenna is moved directly over the cable path. Speaker response is a high warbling tone to the right of the cable path, a low warbling tone to the left, and a solid tone directly over the cable. Special Peak Mode: This mode will increase the signal sensitivity of the Receiver when the signal is too weak for normal tracing. Use special attention when using this mode because it is more susceptible to congestion than the normal peak mode. Numerical Signal Strength Display Resolution: The user may select between 3 levels of signal strength resolution. The setting will be displayed on the right end of the bar graph during selection.To change the setting, press and hold the key during power up then press the key. Display resolution may be changed between the standard 1X, (no bars illuminated), 2X, (One bar illuminated), and 4X (Two bars illuminated). The unit saves the last setting until changed. Note: While tracing cables,...
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