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Adjust the volume to a comfortable level using the up and down
6.
buttons. If the signal is very loud when near the cable, the volume
may need to be reduced to keep from overloading. When the
amplifier is overloaded, small increases or decreases in the signal at
the tip cannot be heard.
To use the green detect LED on a run of cable, start at the tone
7.
generator end of the cable and hold the probe at the distance you
want to detect the tone. Adjust the volume until the detect LED just
turns on or off. This sets the sensitivity of the detect LED.
Hold the tip of the PROBEplus near the cables to be identified.
8.
The signal will be loudest on the wire or cable with the generator
attached to it. Separating the wires or cables may help in identifying
the correct one. The probe contacting a terminal or bare wire
carrying the tone will be substantially louder.
Note: The tone LED of the TONEcube and the power-on LED of the
PROBEplus flash rapidly if the battery is low. See Battery
Replacement section for new battery installation.
On the TONEcube, The NRM and REV LEDs will be on at low
intensity with test leads disconnected to visually show the output
tone cadence.
cONNEcTION VARIATIONS
There are several ways to connect the generator to the cable to be traced.
The connection method can greatly change the signal strength detected
by the tone probe or limit coupling to surrounding wires and cables. Too
much signal strength can make it difficult to determine the exact cable or
wire carrying tone.
• Single generator lead: Often just one lead of the TONEcube needs to be
connected to the wire or terminal. This is best for tracing along a cable or
wire run including wires behind dry wall. Connect to the shield of a coaxial
cable, not the center lead.
• Both generator leads connected to a cable: Connecting both generator
leads to wires in a cable reduces the radiated signal, especially when
connected to both wires of a twisted pair, due to signal field cancellation.
This can be useful for finding the desired wire or cable in a dense wiring
environment such as a patch panel or a telephone punch-down block. The
wires carrying tone must be very close to the probe tip to be detected. Place
the tip in a patch panel connector or touch a terminal on a block to find the
signal.
• Both generator leads, one to ground: With one lead connected to the
wire or cable to trace and the other connected to earth ground, the signal
strength is greatly enhanced. Try a single lead connection first for tracing
along a cable because the ground connection method can yield too much
signal causing poor discrimination between cables or wires.
• RJ plug connection: The RJ plug can be directly connected to a phone
jack and should be the same connection as both generator leads connected
to a pair in a cable, usually line 1 or the center two pins of the jack.
Note: The wire to be traced cannot be at earth or safety ground potential.
The generator signal is shorted out in this instance.
cORREcT pAIR VERIFIcATION
When both generator leads are connected to a pair, shorting the two leads
together will cause the tone signal to be shorted out. If the tone probe is on
and nearby, you should hear the tone being lost while the pair is shorted,
verifying the correct pair has been found.
If the CONT-STAT switch is in CONT (continuity) position, the red LED will
light on the generator when the cable is shorted. This could tell an assistant
that the pair was found and to move on to the next pair.
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TONEcube SETTING TONE SOUNDS
The tone cadence or style can be changed using the TONE switch. Slide the
TONE switch to the left and hold on. With a tone probe, you will hear each
of the five tone sounds for a few seconds. The tone being heard when the
switch is released is now selected.
TONEcube pOLARITy & VOLTAGE pRESENcE TESTING
The STAT (status) switch position is used to determine if voltage is present
and what polarity or type it is. The NRM (normal), green LED and REV
(reverse), red LED are referenced to the POTS (Plain Old Telephone
Service) conventions. If the red clip is connected to the tip signal and the
black clip (green phone wire) is connected to the ring signal, the polarity is
that of a 'normal' phone line and line voltage is present.
• Green LED is on: the black lead is more positive than the red lead.
• Red LED is on: the red lead is more positive than the black lead.
• Both LEDs are on: the voltage is an AC voltage.
• When the RJ plug is used: a correctly wired and powered POTS
phone jack will light the NRM, green LED.
Note: The POTS color code convention (black/positive, red/negative) is
the opposite of the multimeter color code convention (red/positive, black/
negative).
TONEcube cONTINUITy TESTING
The continuity mode is used to determine if a low resistance path exists
between two points.
CAUTION:
If connecting to unknown wires, use the STAT switch
position first to verify no voltage is present. The TONEcube could be
damaged by a voltage being present or cause erroneous results.
Move CONT-STAT slide switch to the CONT position.
1.
Connect the leads to the two locations to be tested. If the resistance
2.
of the circuit is less than about 10,000Ω, the REV, red LED will light.
Return slide switch to STAT position when finished. The TONEcube
3.
draws no power from the battery when the leads are open, but the
leads could touch during storage, draining the battery.
pROBEplus REpLAcING THE pROBE TIp
The probe tip can be replaced if it is worn out or damaged with PROBEplus
Probe Replacement Tip Cat. no. VDV999-065
Loosen the screw on the back of the probe nearest to the probe tip
1.
using a #1 Phillips screwdriver.
Pull the old tip out of the probe.
2.
Push the new tip into the probe. The probe body has a keying slot
3.
so the probe can only be inserted completely in one orientation.
4.
Tighten the screw, being careful not to over-tighten. Make sure the
probe tip is firmly held in place by pulling gently on it. If not, tighten
the screw slightly.
TONEcube BATTERy REpLAcEMENT
Remove single screw on the bottom back of the TONEcube with a
1.
#0 Phillips head screwdriver. Remove battery door.
2.
Recycle exhausted battery.
Acquire a 9 volt alkaline battery (IEC 6LR61, ANSI/NEDA 1640A).
3.
Connect battery cable to new battery observing polarity and place
4.
into battery compartment.
Replace battery door and screw, taking care not to over-tighten it.
5.
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