Ridgid SeekTech ST-305 User Manual download pdf (Page 7)

Ridge Tool Company

Tools For The Professional

SeekTech

ST-305

WARNING! NEVER CONNECT TO LINES KNOWN TO BE

ENERGIZED WITH A POTENTIALLY DANGEROUS ELECTRICAL

CURRENT. To increase safety, the ground lead should be

attached rst. If there were an unknown high voltage

running through the target line, this would allow a means

of redirecting the current away from the transmitter and

operator.

Power the ST-305 up.

Select a Frequency on the Transmitter.

Available frequencies are:

1 kHz

8 kHz

33 kHz

93 kHz

The selected frequency is shown by a lit LED. The 93 kHz

is shown by a rapid ashing of the 33 kHz LED. To set the

unit on 93 kHz, press the Frequency Key for more than one

second (long press). The 33 kHz LED will start ashing rapidly,

indicating a 93 kHz frequency.

2. Check the Circuit and Adjust Power

Level

Conrm the circuit is grounded by checking the connection to

the ground stake is secure and the stake is rmly embedded

in the ground. To adjust the power level, press the power

button briey. The ST-305 will cycle through the low, medium

and high power levels.

NOTE: Higher power settings produce more current, which

gives a stronger signal. Less current prolongs battery life. Signal

strength measured by the receiver is directly proportional to

the amount of current on the line. More current will produce

a stronger signal received by the receiver.

Use only as much current as is needed to get a strong reading

on the receiver.

Generally the lower the resistance the more eciently current

can be added. A lower resistance indicates an ecient circuit

and requires less voltage to charge the line. Things that

increase resistance include paint or dirt on the connection

points, very dry soil, poor ground connection, poor insulation

on a wire, or breaks in the conductor.

Power Settings

There are 3 power settings available:

• Low power (approximately .5 watt)

• Medium power (approximately 2.0 watts)

• High power (approximately 5 watts)

Low power will provide the least current with the longest

battery life. Actual power output will vary with circuit

resistance and frequency used. These values assume a

nominal 320-ohm load.

The transmitter’s maximum current output depends on the

amount of resistance in the circuit.

CAUTION: If the transmitter is showing low or no current

(low or no beep rate), the signal may be too low to be detected

by the receiver locator and inadequate for tracing.

3. Check the Receiver

Conrm that the transmitter and receiver are set to the same

frequency. Hold the receiver near the transmitter cables and

conrm a signal is being received.

FCC Limits

47 CFR 15.213 requires that from 9 kHz up to (but not

including) 45 kHz, peak output power shall not exceed 10 W.

From 45 kHz to 490 kHz, it must not exceed 1 W. When the

ST-305 is set to 262 kHz (European version: 93 khz), the power

output levels are limited:

Low: 0.3 watt

Medium: 0.6 watt

High: 1 watt

These values assume a nominal load of 320 ohms.

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Ridgid SeekTech ST-305 User Manual Page 7

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