Rev. 08/04/03

Locate Tone Frequencies (user selectable), with maximum pair lengths

Max Pair Length above is a limit for locating maximum resistance faults. Lower-ohm faults can be located at longer lengths.

Locate Tone Output

Termination   

Transformer winding with grounding center tap.

Metallic Output 

Black (A, Tip) and Red (B, Ring) - access pair.

Ground   

Green (center tap) - connect to cable shield.

Waveform         

Sinewave

Output voltage - A to B
         A or B to ground

Adjustable 0 to 200Vrms
Adjustable 0 to 100Vrms

Power into pair  

4 watts max.

Tone Strobes    

2 /sec, alternating polarity; interrupt each 5th sec.

Output Protection:         

Short circuit current limited.

DC Bias Supply -

Reduces the AC resistance down into the locatable range.

Bias voltage      

DC Voltage equal to output AC tone voltage.

Current             

2mA max

Power

0.5 watt max. will not burn or weld the fault.

Pilot Tone Generator -

Sent Transmitter to Receiver.

Application       

Simplex on the pair.

Carrier              

8/10 kHz FSK

Pilot Voltage

30 Vrms max., 0.5 Watts max.

Pretest

Test Excitation Source  

35 Hz Sinewave, 15 Vrms A or B to Ground

AC Ohms

1 ohm to 3 Megohms

    Accuracy

±7% of reading ±10 ohms

Conductor Length

6ft to 150,000ft [2m to 50,000m]

    Accuracy     

±7% or reading ±20m

Battery

(10) Alkaline D-Cells

    Battery Life

50 hours typical – normal use

    Power time-out

5 hours

Locate Tone Amplifier

Gain

130dB - user adjustable

Sensitivity

100nV

Bandwidth

1Hz

Capacitance current

30 to 1 rejection

Meter scale

LCD Bargraph display

Audio output tones 

Dual frequency tones indicate polarity. Loudness proportional to received signal strength.

Pilot Tone Amplifier

Sensitivity

3 uV

Aural

Loudspeaker, plus Pneumatic Headset for high noise locations

Coil / Wand

1/4" phone jack
Additional 1/8" jack for buried wand

Buried Wand (optional)

Custom Telefonix

Aerial Coil (optional)

Humbucker layup stick, or lollipop cable maintenance pole

Handcoil

Humbucker noise canceling coil

Receiver Battery

(8) Alkaline A-cells

    Battery Life

50 Hours typical - normal usage

    Power timeout

2 hours with coil plugged in. 5 min with coil out.

Receiver Case

ABS plastic instrument case.

    Dimensions

52 H x 152 W x 180 D mm (2.1  6.0 x 7.1 in)

    Weight

0.9 kg (2.0 lbs) including batteries

Instrument Case

Molded Polypropylene, with external ballistic nylon pouch for accessories.

    Dimensions

203 H x 340 W x 298 D mm (8 x 13.4 x 11.7 in)

    Weight
    (complete kit)

7.7 kg (17 lbs) including Receiver, batteries, Handcoil, leads, strap, headset.

Temperature –

The ToneRanger^® will give at least a  2 to 1 locate tone level⁽¹⁾ change at the fault for the maximum fault resistances listed below.  Faults up to these resistances can be located in aerial cables and in buried cables up to the depths shown below, and frequently deeper.

Using DC Bias, faults up to one megohm can frequently be located by bringing them down within the locatable fault resistance range indicated in the table below.

(1)  Locate tone level is defined as the level of the strongest peak observable by moving the coil along a 6 ft. [2m] section of cable immediately before or after the fault. The tone will normally rise and fall with the twist and lay of the cable conductors and drop to a low value or background noise beyond the fault.