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Browse Prior Art Database

Remote Testing of Equipment

IP.com Disclosure Number: IPCOM000086591D
Original Publication Date: 1976-Oct-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Heim, DR: AUTHOR [+2]

Abstract

In Fig. 1, remote testing of equipment at various sites located some distance from a central site is accomplished by connecting a simulator 1 to a data coupler 2 that is connected to a switched telephone tie line by telephone set 3, designated extension 1000. A specific extension, such as telephone set 4, extension 2000, is dialed. This set is also connected to a data coupler 5 which, in turn, is connected to the communication line 6. Through the use of switch 7 the central intelligence unit (CIU) 8 can be bypassed, thereby allowing each remote terminal unit (RTU) 9, 10, 11 to be interrogated from the central site.

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Remote Testing of Equipment

In Fig. 1, remote testing of equipment at various sites located some distance from a central site is accomplished by connecting a simulator 1 to a data coupler 2 that is connected to a switched telephone tie line by telephone set 3, designated extension 1000. A specific extension, such as telephone set 4, extension 2000, is dialed. This set is also connected to a data coupler 5 which, in turn, is connected to the communication line 6. Through the use of switch 7 the central intelligence unit (CIU) 8 can be bypassed, thereby allowing each remote terminal unit (RTU) 9, 10, 11 to be interrogated from the central site.

It is also possible to interrogate specific cards within an RTU by disconnecting the remote site's interface from the RTU and connecting a special test box to the cards. This test box contains hardware to enable testing, such as digital in (DI), digital out (DO), etc.

In a variation (Fig. 2), an IBM System 7 designated 12, and the CIU 13, connected to the data coupler 2a, are used to diagnose system operation, rather than have the System/7, designated 15, and the CIU 16 perform the task at the remote site.

In the above three cases, it is desirable to establish another communication line between operators. A system of this nature enhances the testing capabilities for all sites and provides a means of assistance, possibly eliminating a trip to the site.

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