JPS5461430A - Inspection unit for reception circuit - Google Patents

Inspection unit for reception circuit

Info

Publication number
JPS5461430A
JPS5461430A JP12761177A JP12761177A JPS5461430A JP S5461430 A JPS5461430 A JP S5461430A JP 12761177 A JP12761177 A JP 12761177A JP 12761177 A JP12761177 A JP 12761177A JP S5461430 A JPS5461430 A JP S5461430A
Authority
JP
Japan
Prior art keywords
reception
turned
signal
relay
contact
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.)
Pending
Application number
JP12761177A
Other languages
Japanese (ja)
Inventor
Shoji Nakahara
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12761177A priority Critical patent/JPS5461430A/en
Publication of JPS5461430A publication Critical patent/JPS5461430A/en
Pending legal-status Critical Current

Links

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  • Selective Calling Equipment (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE: To enable to confirm the operation of the mutual connection cables and the reception circuit with a simple circuit constitution, by delivering the inspection signal every plurality points or system from the reception side to the signal source at the field.
CONSTITUTION: At normal monitor condition, since S1,S8 are turned off and S2 is ON, if the signal contact 1-1 is turned on, for example, the relay 3-1 is operated, turning the contact 4-1 on and information is inputted to the information processor 10. Next, at the inspection of the reception circuits of N, S1 is turned on and s2 is OFF, operating the auxiliary relay 8 and since the voltage of the line P is applied to the bus T, the reception auxiliary relays 3-1 to 3-N are activated through the diodes 2-1 to 2-N, turning on the contacts 4-1 to 4-N. However, no input signal is given to the unit 10. If the cables and the reception auxiliary relays from the signal contacts 1-1 to 1-N to the reception auxiliary relays 3-1 to 3-N are all normal, it can be noticed that the relay 7 is operated. On failure, since the contact corresponding to the line is not turned on, the display unit 9 is not illuminated and the condition can be known
COPYRIGHT: (C)1979,JPO&Japio
JP12761177A 1977-10-26 1977-10-26 Inspection unit for reception circuit Pending JPS5461430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12761177A JPS5461430A (en) 1977-10-26 1977-10-26 Inspection unit for reception circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12761177A JPS5461430A (en) 1977-10-26 1977-10-26 Inspection unit for reception circuit

Publications (1)

Publication Number Publication Date
JPS5461430A true JPS5461430A (en) 1979-05-17

Family

ID=14964358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12761177A Pending JPS5461430A (en) 1977-10-26 1977-10-26 Inspection unit for reception circuit

Country Status (1)

Country Link
JP (1) JPS5461430A (en)

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