RIDGID NaviTrack 10 Manual del operador descargar pdf (Pagina 13)

SeekTech

ST-510 Line Transmitter

)

Figure 15: LO Current

WARNING

If the transmitter is showing low or no current, the

signal may be too low to be detected by the receiver

locator and inadequate for tracing.

6. Check the Receiver

Set the receiver’s frequency to match that on the

transmitter

. Confirm the receiver is picking up the

transmitted frequency by holding it near the

transmitter and observing the increase in receiver

signal.

Useful Operating Points

•

The lower the total resistance, the more current

will be put on the line. A good circuit is one that

allows enough current to flow so that the locator

gets a clear and stable signal.

• To help lower the resistance of the circuit,

scrape away dirt, paint and corrosion before

connecting to the target conductor or grounding

spike.

• A good ground lowers resistance, which allows

more current flow and a stronger signal. For a

better connection to ground, insert the

grounding spike as far as possible. Moist

ground is a better conductor than dry soil.

Wetting the ground can improve a circuit in dry

soil.

• If the desired current output cannot be

produced, the voltage and ohms

(resistance/impedance) readings can give

useful information. For example, if the

transmitter is putting out a high voltage, the

resistance/impedance of the circuit is probably

too high. If the voltage is lower (30v max) and

the ohms (resistance) reading is also low, the

line transmitter may be constrained by power

restrictions. (See FCC limits information on

page

17)

• The transmitter’s leads can act as antennas,

broadcasting a strong signal. If locating close to

the transmitter, keep the leads as short as

possible by stowing the excess length in the

transmitter’s side pockets. This will reduce the

amount of interfering signals from the leads.

• It is usually best to start by using the lowest

frequency and the least amount of current

needed to effectively illuminate the line. Lower

frequencies travel farther. Higher frequencies

generally make it easier to illuminate a line, but

they do not travel as far and are much more

likely to couple onto other utility lines. This can

distort the signal and reduce accuracy.

DANGER

ALWAYS HOOK UP LEADS FIRST BEFORE

POWERING THE UNIT ON TO AVOID SHOCK.

ALWAYS POWER UNIT OFF BEFORE

DISCONNECTING LEADS.

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RIDGID NaviTrack 10 Manual del operador Pagina 13

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