JPH0443727A - Cable pair identifier - Google Patents

Abstract

PURPOSE:To check the wiring state of a communication cable together with the check of the presence of contact wires simply to the utmost in an excellent way by providing a display section displaying a core wire number and core wire number information representing the presence of contact wires from a DTMF signal reception section on the device. CONSTITUTION:An earth pulse signal C is sent from, e.g. a master set 1 to a slave set 2 through core wires for checking the wire check of a cable 3, the slave set 2 converts the signal into a DTMF signal being core wire number information, it is sent to the same core wire. Thus, the core wire number and the presence of line contact are displayed on a display section 13 of the master set 1. Thus, one operator at one end of the cable executes the core pair identification and the cable pair identification work time is reduced and the presence of the cable core wire contact are surely detected.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is intended for displaying the corresponding core wire number and identifying the corresponding core wire number in cable core number comparison work for inspecting the wiring condition of communication cables such as telephone lines. The present invention relates to a cable core comparison device that can display the presence or absence of iI crosstalk.

[Conventional technology]

Conventionally, in order to inspect the wiring condition of communication cables as described above, workers were placed at both ends of the cable to be inspected, and while communicating with each other, they inspected both ends of each core wire using tools such as a buzzer for inspection. It was carried out by K to take a control.

[Problem to be solved by the invention]

However, in the conventional cable comparison work as described above, there is a problem that it is not efficient in terms of efficiency because it requires a lot of manpower and work time.

Further, in the above-described simple core wire comparison operation 1, there is a problem in that even if there is cross-wire between the core wires, it cannot be detected.

Therefore, this invention was made in view of the above-mentioned points. 1. It is possible to inspect the wiring condition of communication cables as easily and efficiently as possible, including detecting the presence or absence of crosstalk. The purpose of the present invention is to provide a cable core comparison device.

[Means to solve the problem]

According to the present invention, in order to achieve the above-mentioned object, a predetermined pulse for confirmation is applied from one end of the cable to the other end in order to identify each corresponding core wire number included in the wired communication cable. a confirmation pulse sending section that sends out a signal; a core wire number decoding section that captures the confirmation pulse signal from the confirmation pulse sending section and decodes the corresponding core wire number at the other end of the cable; and the communication cable. A cross-wire detection section detects the presence or absence of cross-wire on each corresponding core wire included in the cable at the other end side of the cable, and the corresponding core wire number is determined based on the contents decoded and detected by the core wire code decoding section and the cross-wire detection section, respectively. and a DTMF signal transmitter that converts core wire number information indicating the presence or absence of crosstalk of the corresponding core wires into a DTMF signal and transmits the signal from the other end of the cable to the one end of the cable, and a DTMF signal transmitter that transmits the DTMF signal from the DTMF signal transmitter to the cable. a DTMF signal receiving section that receives the information at one end and converts it into core number information indicating the presence or absence of a mixed bond between the corresponding core wire and the corresponding core wire; A cable core wire comparison device is provided, which includes a display section that displays core wire number information indicating presence/absence.

[Effect]

According to the cable core wire comparison device tK of the present invention having the above-mentioned functions, the core 17M that performs comparison of the cable to be compared is
K, for example, send an earth pulse signal from Goodwill to Senken,
From the 1,000 tickets, convert it into a DTMF signal and send it to the same core 1 as core wire number information, display the corresponding core wire number on the filler (no display in the case of a break), and send the corresponding white breath! Since it is possible to display the presence or absence of mixture of I and II, it is possible for one worker to carry out the cable core comparison work at one end of the cable, reducing the time required for cable core edge comparison work. It is possible to reliably detect the presence or absence of core tSO crosstalk.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

In Fig. 1, 1 is goodwill, and is mainly responsible for sending out an earth pulse signal for confirmation and D
The TMF signal is received, converted into core wire number information indicating the presence or absence of crosstalk between the corresponding core wire and the corresponding core wire, and displayed.

2 detects the ground pulse signal for confirmation sent by Senken and Goodwill 1, stores the corresponding core wire number information, and transfers the corresponding core wire number information to DTMF (Dial Tot+eMu
lti Fr*queoey ) signal and convert it to 11
Send to device J.

3 is a cable to be compared, which includes a plurality of core wires J.

2...n.

4Fi, parent JK core! It is an I connection terminal.

The test lead 3a is connected, and the test lead 3a is switched so as to selectively contact the ends of the six cores @J, 2...n of the cable 3 to be tested. Reference numeral 5 denotes a ground terminal of the device J, which is connected to the ground terminal 7 of the ground terminal 2 or the senken 2. Reference numeral 6 denotes a connector for connecting each core wire J2...n of the cable 3 to be tested in the senken 2. 7Fi, the ground terminal of Senken 2, and the ground f
India or 1j to ground terminal 6 of goodwill 1! Continued. 8 is! This is a clock generator provided in the device J, and outputs a clock signal A with a period of 100 m5ec, for example, to the earth/stress sending section 9K, which is also provided in the device J.

Earth pulse signal! ! 9 is for confirmation to 1,000 tickets 2.

For example, the earth node 9 at the earth potential is sent out for a period of 3 m5ec. Reference numeral 10 denotes a monitoring section provided within the receiver 1, which outputs an earth pulse control signal I to the earth pulse sending section 9, and outputs a display control signal I to a display section 13 provided within the II monitor.

1 is a DTMF signal receiving section provided in the Goodwill J, and a communication cable 3. receives the DTMF signal transmitted via the capacitor C, converts it into core wire number information, and outputs it to the storage section 12 provided in the main unit 1. Only when the input code is the first code described later, a reception start signal key is output to the monitoring unit 1o.
The core wire number information output from the DTMF signal receiving section 1 provided in the DTMF signal receiving section 1 is stored.

The display section 13 provided in the friendship 1 displays the corresponding core wire number and information indicating the presence or absence of crosstalk between the corresponding core wires according to the outputs from the monitoring section 10 and the storage section J2 provided in the friendship 1.

Reference numeral 14 is a core wire number decoding unit provided in the mounting device 2, which converts the ground pulse signal for confirmation output from the II mounting device into a BCD code (binary code 1) as a binary code.
The core wire number is converted into a corresponding core wire number (0 base number) and outputted to the storage section 16 and the crosstalk detection section J7 provided in the mounting device 2.

Reference numeral 15 denotes an earth pulse detection section provided in the mounting device 2, which detects the ground pulse signal for confirmation from the goodwill 1, and detects the starting signal of the thousand coupons 2.
6. Output to the crosstalk detection section 17, clock oscillator 1B, and transmission control section 19, respectively.

The memory sJ6 provided in the writing device 2 stores the white breath incense symbol according to the activation signal from the earth pulse detection section J5 provided in the thousand notes z.

The cross-wire detection s17 provided in the writing device 2 similarly detects the presence or absence of cross-MO of the #white line. The clock oscillator 1B provided in the recording device 2 has a period of 5 Q mm, for example.
The ec clock signal is output to the transmission control section 19 provided in the mounting device 2. The transmission control section 19 provided in the above-mentioned writing device 2 detects the corresponding core wire number stored in the storage section 76 provided in the above-mentioned writing device 2 and the cross-wire detection section 11 provided in the child G2. The presence or absence of crosstalk is sent to the DTMF signal transmitter 20 provided in the device 2.

A DTMF signal transmitting section 2o provided in the recording device 2 is as follows.

The core wire number information is converted into a DTMF signal and sent to the equipment IK. 211i, an auxiliary display section provided in the mounting device 2, which displays the corresponding core wire number and the presence or absence of crosstalk of the corresponding core wire in the mounting device 2;

Next, the operation of the cable core comparison device according to the present invention will be explained with reference to the operation timing chart of FIG.

Connect the cable to be compared 3 to the cable is connector 6 of Senken 2.
Connect the KM, turn on the power to the H device J and the thousand coupon 2 using the power switch (not shown), and connect the core wire connection terminal 4 of the II device J.
The test lead 3a connected to the test cable 230 each core to be tested! When the conductors 1M1.2...n are sequentially switched into contact, the clock oscillator 8 of the device 1 supplies a clock signal a to the earth pulse sending section 9 of the goodwill J.

The monitoring section 10 outputs an earth pulse control signal to the earth pulse sending section 9. The earth pulse sending unit 9 is activated when the earth pulse control signal of the monitoring unit 10 is at high level H, and outputs the earth pulse signal based on the clock signal A (
A low level L signal indicating the ground potential is output to the core wire connection terminal 4 as a confirmation pulse. That is, this ground pulse signal is determined by which core wire l of the cable 3 to be tested is connected to the test lead 3a, as shown in Figure 2(?)K.

2... When not in contact with n (when not measuring), pulses are continuously emitted as shown by the dotted line. As a result, the earth pulse signal outputted to the core wire connection terminal 4 of the Goodwill 1 is sent to the core wire number decoding section 14 in the loading device 2 via the cable connection connector 6 of the Senken 2.

This core wire number decoding unit J4 determines the corresponding core wire number of the BCD code (binary coded decimal number) (core wire number of the target cable 3 connected to the core wire connection terminal 4 of Goodwill 1) from the earth pulse signal for confirmation. ) K conversion and output it to the ground delta pulse detection section 5, storage section J6, mixed detection section 17 and K in the mounting device 2, respectively. When the earth pulse detection section 16 detects the earth/gurus signal for confirmation, the earth pulse detection section 16 activates the signal generator 2° to the storage section 16 in the thousand coupon 2, the crosstalk detection section 12, and the clock oscillator in the thousand coupon 2. 18 and the transmission control unit 19, respectively. When the activation signal of the 1000-sized ticket 2 is output from the earth pulse detection section J5, the storage section 16 in the 1000-sized ticket 2 stores the corresponding core wire number, and the cross-wire detection section 11 stores the stored content from the storage section 16 as the core wire number. The presence or absence of crosstalk is detected by comparing it with the newly decoded core wire number in the decoding section 14.

The clock oscillator 18 in the senken 2 and the transmission control section 1
9 is activated, thereby clock oscillator 1 of Senken 2
At the timing of the clock signal output by 8, the first code, the second code, and the third code having the following information including core wire number information (presence or absence of crosstalk between the corresponding core number and the corresponding core wire) are output in the order of, for example, the output time. It is output to the D'IMF signal transmitter 2o with an interval of 50 mmee and a pause interval of 50 mmec. here.

The first code indicates the presence or absence of crosstalk information using, for example, red or -, the second code has information on the 10th digit of the core wire number, and the third code has information on the 1st digit of the core wire number. For core AT numbers of 100 digits or more, for example, by assigning them to parts that are not used in the first code, it is possible to easily correspond to them.Table IK Correspondence between DTMF signals and code names Show relationships.

Correspondence between DTMF signal (Low group and high group combination table 1) and -do name When the output of the core wire number information is completed in this way, the core wire number decoding section 14 ground the reset signal of the 1000 keys 2. /4 pulse is output to the detection unit 15, and the series of operations of the 1,000 tickets 2 about the 0 core line point Wlk is completed.

D in 1,000 tickets 2? In the MF signal transmission s2o, the transmission control unit 1
9, the core wire number information received is converted into a DTMF' signal and outputted to the corresponding terminals 1, 2, . In addition, on the auxiliary display section 21 in the thousand coupons 2, the transmission discount 19
The core wire number information is displayed only during the time period from when the controller is activated until the controller outputs the 1,000-note 20 reset signal. This auxiliary display section 21 is ancillary and does not necessarily need to be provided due to the structure. , is input to the DTMF @ signal receiving unit 11 in the planter I through the core wire Ill period terminal of the planter I and the capacitor C. The DTMF' signal receiving section 11 in the II unit J converts the input DTMF signal into core wire number information,
It is output to the storage unit 12 in the Goodwill 1.

At this time, the DTMF signal receiving section 11 receives the first input code.
Only in the case of a code, a reception start signal is output to the monitoring section 10. 1! #'i in storage section J2 in device 1.

Core wire number information output by the DTMF signal receiving section 11 is stored. The monitoring unit 1o that receives the reception start signal from the DTMF' reception s1 outputs a 4 display control signal to the busy 1 display unit 13 when it stops outputting the earth pulse signal signal at the reception timing of the first code. . As a result, when receiving the first code, the earth pulse sending unit 9 is activated as shown in FIG.
The output of one earth pulse signal is stopped so as to eliminate the Δlus in the dotted line part 71, and 1 display s13 displays the corresponding core wire number and the presence or absence of crosstalk of the corresponding core wire. The monitoring unit 10 monitors the reception time of the core wire number information, and when the reception is completed, outputs a ground pulse control signal and stops the display control signal.

As a result, the earth pulse sending unit 9 starts the earth pulse signal O sending ratio for the next inspection of the core wire, and the display s13
stops displaying.

From this point on, the above-described series of operations are repeated until the inspection of all core wires is completed and the power is turned off.

Then, the first worker must check the number of the core wire of the cable being contacted with the test lead 3 & of the core wire connection terminal 4 with the core wire number displayed on the display section 13 at the friendly l@. It is possible to facilitate manual comparison of cable core wires, and also to reliably detect cross-wires in the corresponding core wires.

According to the above cable core line comparison device.

The connection between the cable and the cable to be compared is made by using the connector for cable connection of the cable, so that all core wires can be connected at the same time.One worker can connect one core wire of the handle! ! ! By sequentially contacting the cable core wires with the test lead connected to the test lead, the core wire number information will be sent to Senken Yoshi Goodwill.The control cable core wire number will be displayed on the device display at hand. Unlike the conventional method, there is no need to place operators at both ends of the cable to be compared, and the work of changing the attachment of the cable to be compared can be done by one person, which can be done more quickly and reliably.

In addition, the cross-wire detection function not only compares the corresponding core wire number, but also determines whether the core wire of the cable to be compared is good or bad during the comparison operation, eliminating the need to redo work such as replacing or switching defective core wires after the cable cloth edge is finished. This not only improves work efficiency, but also improves reliability.

〔Effect of the invention〕

Accordingly, in accordance with the invention as described in more than one detail.

It is possible to provide a cable core wire comparison device that can inspect the wiring condition of a communication cable as easily and efficiently as possible, including detecting the presence or absence of crosstalk.

[Brief explanation of drawings]

1st rI! J is a configuration explanatory diagram showing one embodiment of the present invention. FIG. 2 is a timing chart for explaining the present invention in detail. In the figure, 1 is the handle, 2 is the thousand ticket, 3 is the cable to be checked, and 4 is the core I! Terminals for connection, 5 is a ground terminal of the handle, 6 is a connector for cable connection, yJd slave terminal. 8 is a clock oscillator, 9 is an earth pulse detection section, a JoFi monitoring section, and 11 is a DTMF signal reception section. Reference numeral 12 represents a loading amount storage section, and reference numeral 13 represents a display section. 14 Fi core incense code decoding section, 16 is earth pulse detection section, 16 is Chiken storage section, 17 is crosstalk detection section, 18 is Chiken clock oscillator, 19 is transmission control section, 20 is DTMF signal transmission section, 2
1 is an auxiliary display section. Takehiko Suzue, private attorney

Claims (1)

[Scope of Claims] In order to identify each applicable core wire number included in the installed communication cable, a predetermined pulse signal for confirmation is sequentially sent from one end of the cable to the other end for each core wire. a core wire number decoding section that decodes the corresponding core wire number according to the verification pulse signal from the verification pulse transmitter on the other end side of the cable; a cross-wire detection unit that detects the presence or absence of cross-wire between the core wires at the other end of the cable; and a cross-wire detection unit that indicates the presence or absence of the corresponding core wire and the corresponding core wire based on the content decoded and detected by the core wire number decoding unit and the cross-wire detection unit, respectively. DTM converts core wire number information into a DTMF signal and transmits it from the other end of the cable to the one end
a DTMF signal receiving section that receives a DTMF signal from the DTMF signal transmitting section at one end of the cable and converts it into core number information indicating the presence or absence of crosstalk between the corresponding core wire and the corresponding core wire; A cable core wire comparison device comprising a display section that displays the corresponding core wire number from a DTMF signal receiving section and core wire number information indicating the presence or absence of crosstalk of the corresponding core wire.