IDEAL VDV PRO Mode D'emploi page 4

3) Connect cable to be traced to main unit. For best signal, do not connect remote. Due to the
canceling effect of twisted pairs, the strongest signal is obtained by having one wire of a pair carry
tone. Selecting a single pin instead of a pair will do this.
4) To turn tone off, press the MODE button until OFF is displayed, then the SEL button. The tone will
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power off automatically after 2 ⁄ hours.
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Note: When using the coax adapter or alligator clip assembly, tone is connected only to Pin 1 and Pin 2
To Blink Hub
When Mode is selected, the VDV Pro sends link pulses on the NIC transmit pair for 3 seconds, then
no pulse for 3 seconds for an overall cycle time of 6 seconds. The TEST icon is on when sending
pulses and off when not. It turns off automatically after 20 minutes.
BATTERY REPLACEMENT – When the "battery low" icon is on, the battery should be replaced as soon
as practical. The cable testing results will become unreliable when the battery reaches about 6.2 volts.
Note: When installing a new battery, disconnect any cables connected.
The length and cable test modes will be improperly calibrated if a cable is present.
SPECIFICATIONS
Environmental:
Operating temperature: 0 to 50°C (32 to 122°F)
Storage temperature: -10 to 60°C (14 to 140°F)
Humidity: 10% to 90%, non-condensing
Battery Life (9V Alkaline battery, typical) Times are for the full capacity
of the battery used continuously in one of the following modes:
Standby: 3.5 years
Cable Testing: No Back Light (Tone, Length, Test) 108 hours
(Hub Blink) 54 hours
Back Light On (Tone, Length, Test) 27 hours
(Hub Blink) 20 hours
Cable Types: Shielded or unshielded, Cat 6, Cat-5E, Cat-5, Cat-4, Cat-3 and Coax
Minimum cable length for testing for split pairs: 1 meter (3 feet)
Minimum cable length for TEST: 1.25 meter (4 feet)
Length measurement range (CAT5/6): 0 to 640 meters (0 to 2100 feet)
Length measurements coax cable: Average 3,000 ft. – depends on coax cable resistance values
Applied Voltage: 100 volts DC or RMS AC applied continuously. Can stand 240 volt peak.
INTERPRETING CABLE TEST RESULTS – The PASS icon will be on if the cable has all pins
properly connected per T568A/B standard. The FAIL icon will be on if there is a short or split pair.
Neither icon will be on if there are opens or miswires. The wiremap should be inspected for these
types of errors.
Definition of Errors – (See failure example drawings) The three classes of faults below are in order
of severity. The more severe wiremap error will mask less severe wiremap errors. For example, if
there is a short in the cable; miswires and splits pairs may not be detected until the short is corrected.
Short – The pair has a low resistance connection from one wire of any pair to another wire in any pair in
the cable or shield. A short with remote attached is indicated by the FAIL icon being on and flashing X's in
the appropriate pin position of the second display line. Error messages listing all the pins shorted together
will also be displayed. In the CABLE TEST mode (no remote), all error messages will be displayed.
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Miswire – Single or multiple conductors are not connected to the same pins at both ends of the cable.
With a remote attached, the wire map shows the pin numbers from display line 1 (main) to display line 2
(remote). A reverse pair is a special case of a miswire in which the pair is wired to the correct pair of pins, but
the two conductors are reversed. In CABLE TEST (no remote), this type of error is not detectable.
Split Pair – A split pair occurs when a cable is terminated consistently at both ends, but in the
wrong order. Twisted pair cables typically are made up of eight wires twisted together in 4 pairs.
These 4 pairs are designated as pairs by the wiring standards and are intended to carry a signal by
creating a circuit. 1 & 2, 3 & 6, 4 & 5 and 7 & 8 are the pairs designated by T568A/B for a RJ45
jack or plug. A cable can be wired with correct continuity but not with correct pairing. With remote
attached, the pin numbers split pairs flash and an error message is displayed listing the split pair
pin numbers. In the PRETEST mode (no remote), the Error message is displayed.
Examples of Wiring Errors (shielded)
T568A/B Passing Cable (unshielded)
10BaseT Wiremap
(2 pair 4 wires)
123 6
123 6
DARK = ON
OPEN
LIGHT = FLASING
FAIL DATA Shield
12345678
345678
Open 1-2 ID 1
SHORT
FAIL DATA Shield
12345678
132456**
Short 78 ID 1
MISWIRE
FAIL DATA Shield
12345678
13245678
Miswire 23 ID 1
SPLIT PAIR
FAIL DATA Shield
12345678
12345678
Split 1236 ID 1
PASS DATA No Shield
12345678
12345678
ID 1
Token Ring Wiremap
(2 pair 4 wires)
3456
3456
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