Apparatus and method for performing and controlling testing of electrical equipment

Apparatus for performing and controlling testing of electrical equipment, comprising:

• matable, separable first and second cases;
• a computer configured in the first and second cases, the computer including a power supply housed in said second case, and a central processing unit housed in said first case;
• first means coupling said first and second cases for conveying at least a first electrical signal;
• second means for attaching said first and second cases to provide a single rigid computer device, said second means including interconnecting tabs and slots in said first and second cases;
• a housing selectively and removably positioned between and separating said first and second cases;
• third means for testing electrical equipment, said third means being disposed in said housing;
• fourth means for attaching said housing to said first and second cases to provide a single rigid device, said fourth means including interconnecting tabs and slots in said housing which are located and configured to engage said tabs and slots in said first and second cases;
• and
• fifth means, coupling said third means with said computer for conveying at least a second electrical signal for control of said third means for testing.

Apparatus for performing and controlling testing of a telephone subscriber loop and communicating results, comprising:

• a computer;
• a test circuit housing;
• circuitry, supported in said housing, for testing a telephone subscriber loop and including a plurality of contacts selectively coupled to the subscriber loop, a plurality of selectable signal conditioning circuits, selectively coupled to selected contacts to provide a conditioned signal, and an instrumentation processor including instrumentation circuits and a voltage measuring device selectively coupled to the conditioned signal and providing data representative of an electrical parameter measurement, said circuitry being coupled to said computer for conveying testing results to said computer;
• and
• an RF modem coupled to said computer, for transmitting said testing results from said computer along a data pathway to a remote computer without the need to convey said testing results over a physical medium during the full extent of said data pathway.

Apparatus for performing and controlling testing of a telephone subscriber loop and communicating results, comprising:

• a computer;
• a test circuit housing;
• circuitry, under the control of the computer and supported in said housing, for testing a telephone subscriber loop and including first and second test leads for connecting said circuitry to at least tip and ring lines of the subscriber loop, a signal conditioning circuit, selectively coupled to selected contacts to provide a conditioned signal, and an instrumentation processor including instrumentation circuits and a voltage measuring device selectively coupled to the conditioned signal and providing data representative of an electrical parameter measurement, said circuitry being coupled to said computer for conveying testing results to said computer;
• a first fuse coupled in-line with said first test lead;
• and
• a second fuse coupled in-line with said second test lead.

Apparatus for permitting a user to obtain electrical test results relating to equipment which is to be tested comprising:

• an administrative computer programmed to store and communicate information related to the location of the equipment which is to be tested;
• a keyboard, coupled to the administrative computer, permitting user input to the administrative computer;
• testing apparatus operable under control of the administrative computer, the testing apparatus configured to obtain data indicating values of a plurality of electrical parameters of the equipment which is to be tested;
• a memory for storing information coupled to the testing apparatus;
• data transfer apparatus coupled between the memory and the testing apparatus for transferring information based on the data into memory, in the absence of manually inputting the information using the keyboard;
• an RF modem, coupled to said administrative computer, for transmitting data from and receiving data in said administrative computer without the need to convey said data over a physical medium during the full pathway of said data.

Apparatus for providing results of electrical tests correlated with location information, comprising:

• an administrative computer which includes
• a central processing unit;
• a memory, coupled to the central processing unit;
• a display, coupled to the central processing unit, for displaying information relating to the location of equipment to be tested;
• a keyboard, coupled to the central processing unit, for receiving user commands to control the display;
• a serial port, coupled to the central processing unit, for transmitting serial data signals;
• a power supply means;
• and
• RF modem means, for providing serial communication from the administrative computer;
• an instrumentation processor, coupled to the serial port using an optical interface to permit communication between the administrative computer and the instrumentation processor;
• a read-only memory coupled to the instrumentation processor for storing program information for the instrumentation processor;
• a random-access memory, coupled to the instrumentation processor, for temporary storage of data processed by the instrumentation processor;
• an I/O register coupled to the instrumentation processor;
• signal processors, having inputs and outputs, which include
• a plurality of selectable signal filters;
• a plurality of selectable terminator resistances;
• and
• tip, ring and ground test leads;
• a matrix of latchable, controllable relay switches for selectably connecting the test leads to the inputs of the signal processors;
• a plurality of relay drivers coupled to the matrix of relay switches and to the I/O register to permit the instrumentation processor to control the controllable relay switches in response to serial data signals received over the serial port from the administrative computer;
• an input protection network for coupling the test leads to the matrix of relay switches;
• controllable power control means including transformer means for coupling the power supply to the instrumentation processor and to the matrix of relay switches;
• means for coupling the RF modem means to a telephone line;
• a controllable-gain amplifier, coupled to the RF modem means, and a speaker, coupled to the controllable-gain amplifier, for reproducing audio signals provided over the RF modem means;
• control logic, coupled to the administrative computer, for transmitting a first control signal to the controllable-gain amplifier and for transmitting a second control signal from the administrative computer to the controllable power control;
• and
• an isolation transformer coupling the RF modem means to the matrix of relay switches.

In an administrative computer, the computer including

• a central processing unit;
• a memory, coupled to the central processing unit;
• a display, coupled to the central processing unit, for displaying information relating to the location of equipment to be tested;
• a keyboard, coupled to the central processing unit, for receiving user commands to control the display;
• said administrative computer disposed in upper and lower matable, separable upper and lower cases;
• a method for performing testing on the equipment to be tested, the method comprising:
• providing a means for measuring electrical parameters of said equipment to be tested;
• separating said upper and lower cases of said administrative computer;
• inserting said means for measuring electrical parameters between said upper and lower cases;
• electrically coupling said means for measuring electrical parameters to said administrative computer along an electrical pathway;
• attaching said means for measuring electrical parameters to said upper and lower cases to provide a single substantially rigid device;
• providing control signals from the administrative computer to the means for measuring electrical parameters;
• receiving signals from the equipment to be tested;
• selectively storing information related to the signals received from the equipment to be tested in the memory of the administrative computer;
• reading, from the memory, the information related to the signals received from the equipment;
• correlating the information read from the memory with the information relating to the location of the equipment to be tested.

A method of communicating between a central computer and a field service computer, comprising:

• providing a field service computer programmed to store and communicate information related to the location of equipment which is to be tested;
• providing a keyboard, coupled to the administrative computer, permitting user input to the administrative computer;
• providing a testing apparatus operable under control of the administrative computer, the testing apparatus configured to test a field device needing service and to obtain data indicating values of a plurality of electrical parameters of the equipment which is to be tested;
• providing a memory for storing information coupled to the testing apparatus;
• providing a data transfer apparatus coupled between the memory and the testing apparatus for transferring information into the memory from the testing apparatus, in the absence of manually inputting the information using the keyboard;
• transmitting first administrative information from said central computer to said field service computer over a radio data link, said first administrative information including at least information relating to the location of a field device needing service;
• testing said field device with said testing apparatus and storing test data in said field service computer;
• and
• transmitting second administrative information from said field service computer to said central computer over a radio data link, said second administrative information including at least information relating to servicing of said field device.