JPS6448551A - Transceiver cable test circuit - Google Patents

Transceiver cable test circuit

Info

Publication number
JPS6448551A
JPS6448551A JP62206035A JP20603587A JPS6448551A JP S6448551 A JPS6448551 A JP S6448551A JP 62206035 A JP62206035 A JP 62206035A JP 20603587 A JP20603587 A JP 20603587A JP S6448551 A JPS6448551 A JP S6448551A
Authority
JP
Japan
Prior art keywords
terminal
test pattern
circuit
monostable multivibrator
received
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62206035A
Other languages
Japanese (ja)
Other versions
JPH0817390B2 (en
Inventor
Michio Haruyama
Kazuhiko Asaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP62206035A priority Critical patent/JPH0817390B2/en
Publication of JPS6448551A publication Critical patent/JPS6448551A/en
Publication of JPH0817390B2 publication Critical patent/JPH0817390B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To simplify the circuit by discriminating whether a received test pattern is 0 or 1 after a delay time corresponding to duty ratio 1 from the leading edge of a test pattern 1 received by a test signal. CONSTITUTION:A transceiver cable test circuit 1 of 'Ethernet(R)' has a connector 1a and a terminal 1b and a test signal generating means consists of a 20MHz oscillator 2 and a binary counter 3. A logic discrimination means consists of a monostable multivibrator circuit 9 and a D flip-flop 10. When the polarity of the received test pattern is inverted due to mis-connection, the monostable multivibrator 9 is operated with a delay time tau from the leading point of time of the test pattern whose polarity is inverted and generates a pulse restored after 50nS. Thus, the terminal D of the D flip-flop is at H level at a terminal Q of the monostable multivibrator 9, then an error output is produced from the terminal 1b.
JP62206035A 1987-08-18 1987-08-18 Transceiver cable test circuit Expired - Lifetime JPH0817390B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62206035A JPH0817390B2 (en) 1987-08-18 1987-08-18 Transceiver cable test circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62206035A JPH0817390B2 (en) 1987-08-18 1987-08-18 Transceiver cable test circuit

Publications (2)

Publication Number Publication Date
JPS6448551A true JPS6448551A (en) 1989-02-23
JPH0817390B2 JPH0817390B2 (en) 1996-02-21

Family

ID=16516819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62206035A Expired - Lifetime JPH0817390B2 (en) 1987-08-18 1987-08-18 Transceiver cable test circuit

Country Status (1)

Country Link
JP (1) JPH0817390B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02305143A (en) * 1989-05-02 1990-12-18 Kone Elevator Gmbh Method and equipment for protecting data transmitting circuit network

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4576324B2 (en) * 2005-11-21 2010-11-04 ルネサスエレクトロニクス株式会社 Microprocessor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02305143A (en) * 1989-05-02 1990-12-18 Kone Elevator Gmbh Method and equipment for protecting data transmitting circuit network

Also Published As

Publication number Publication date
JPH0817390B2 (en) 1996-02-21

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