Programmed calculating input signal module for waveform measuring and analyzing instrument

• US 4,104,725 A
• Filed: 03/26/1976
• Issued: 08/01/1978
• Est. Priority Date: 03/26/1976
• Status: Expired due to Term

• Current Assignee: Norland Corporation
• Original Assignee: Norland Corporation
• Inventors: Lidicker, Roger E., Rose, Frederick A., Nord, Russell H.
• Primary Examiner(s): Morrison, Malcolm A.
• Assistant Examiner(s): Krass, Errol A.
• Application Number:
  US05/670,891
• Time in Patent Office: 858 Days
• Field of Search: 235/151.31, 235/151.3, 235/152, 235/156, 313/391, 313/397, 313/364, 315/1, 324/97, 324/121, 324/158, 328/14, 340/324 A, 340/347 DA, 340/172.5, 445/1, 364/487, 364/579, 364/580, 364/900 MS File, 364/200 MS File, 324/77 R
• US Class Current: 702/68
• CPC Class Codes: G01R 13/02 for displaying measured electric variables in digital form

Abstract

A waveform measuring and analyzing instrument includes a pair of plug-in receptacles adapted to receive signal acquisition and/or processing plug-in units. Each of the receptacles is wired to a waveform data memory and to a programmed processor. The program memory for the processor includes addresses assigned to the plug-in units for addressing a memory in the plug-in units which include plug-in type and status data and may include a plug-in resident programmed memory array in which a data calculation program is stored. The processor is connected to execute the software program in the plug-in unit. The plug-in resident calculating capability significantly expands the power and capability of the instrument to analyze and process particular waveform signals. The software programmed plug-in units may be formed with a pre-programmed, read-only memory or may employ a read-write memory with means for interfacing to a still larger external storage or memory. The instrument housing has an upper front control panel and a lower inter-active keyboard panel. The receptacles and plug-in units are rectangularly shaped and the receptacles are oriented horizontally in the housing to require sidewise placement or insertions of the plug-in units. A circuit board chamber is formed in the upper housing portion within which a stack of circuit boards are conveniently housed.

Claims

1. A waveform measuring and analyzing instrument having a visual display output means and a digital memory array means for storage of the coordinates of a digital representation of a waveform, a data acquisition means connected to said memory array means for establishing digitized waveform signals of a waveform, a programmed processor having a program memory and an interactive user operated control means for the processor for programmed data reduction of the data in the memory array means, the improvement in the data acquisition means comprising a releasably connected signal coupling unit in said instrument having a first bus connection means including a hardware bus connector and a software bus connector connected to the processor and to the data acquisition means, plug-in modules having a single integrated support having second connection means including a hardware bus connector and a software bus connector for connection to said first bus connection means, said integrated support being insertable as a unit into said coupling unit and establishing the interconnection of said corresponding connectors, said plug-in unit including a resident software program means connected to the software bus connector of said plug-in module and a hardware signal processing means connected to the hardware bus connector of said plug-in module, said hardware bus connector and said software bus connector of said first connection means establishing transmission of signals between said processor and said module resident software program memory means and said hardware signal processing means for processing of data in said hardware signal processing means and for executing a software program resident in said module.

2. The instrument of claim 1 wherein said module includes user operated control means, and said coupling unit includes means to monitor the presence of said user operated control means resident in said module.

3. The instrument of claim 2 wherein said module resident control means controls execution of the software programs in the module resident memory means.

4. The instrument of claim 3 wherein said digital memory array means includes a plurality of input ports connected one each to each of a similar plurality of memory arrays in said memory means, said memory array means includes a controller having a program table of instructions for controlling connection of the input ports to said data acquisition means, said controller having logic routing means for selectively entering the waveform signals in any of the plurality of memory arrays, and said logic routing means being controlled by said controller in accordance with the program table established by said processor to enter the signals into a selected array, said module having operator control means programmed for selecting the input port to receive the waveform signal for entering the waveform signals into said memory array means, said processor responding to the operator control means to set the instructions in said program table of instructions in accordance with the operator control means.

5. A waveform measuring and analyzing instrument having a visual display means, comprising a digitized memory array means for storage of the coordinates of waveform data in digitized form for display by said display means, data receptacle means connected to said memory means for transmitting digitized waveform signals of a waveform, a programmed processor having a program memory and connected to said memory means and to said data receptacle means for selectively entering said digitized waveform signal in said memory array means, an interactive user operated control means having a plurality of keystroke means for programmed basic arithmetic and compound mathematic functions for reduction and calculation with at least one of the waveform data signals in the memory array means being read by the processor as an argument of the function of the keystroke means, said data receptacle means including a first part of a two part releasable signal connector unit, data modules each having a single integrated support and a complementing part of the two part connector unit for connection to said first part and having a resident memory and resident signal processing hardware on said support, said programmed processor including addresses assigned to a software program memory resident in a module and being operable to execute the software program in such software program memory upon command and to transmit and receive signals from said signal processing hardware.

6. The waveform measuring and analyzing instrument of claim 5 wherein certain of said modules include user operated interactive control means, and said memory resident in the module includes software for said interactive control means, and said processor being operable to respond to said interactive control means.

7. A waveform measuring and analyzing instrument having a visual display means comprising digitized waveform memory means for storage of coordinates of a visual display in digitized form, signal coupling modules each having waveform signal processing hardware and a resident software program means for reduction and calculation with the signal data as an entry, said modules each having one part of a two part circuit connector unit including a data bus connector to the hardware and a software bus connector to the resident program means, a data acquisition input means connected to said waveform memory means, the second part of said two part connector unit including a data bus connector coupled to the first part and to the data acquisition input for entering the digitized representation of a waveform, a programmed processor having a program memory for actuating said display means and said data acquisition input means for selective entry of said digitized waveform signal in said waveform memory means, said processor being constructed to execute software programs in said module and to transmit signals to and from said resident hardware.

8. The waveform measuring and analyzing instrument of claim 7 having an interactive user operated control means having a plurality of input means for each of a plurality of basic mathematical functions for reduction and calculation with the data signals in the memory array means as an entry, said modules including user operated input means for selecting a program resident in the module, and said processor including means responsive to actuation of said module input means to invoke the corresponding program in the module program memory.

9. The instrument of claim 7 wherein said input means includes socket means and said modules are plug-in units.

10. The instrument of claim 9 consisting of a pair of said socket means, each of said socket means having a plurality of signal channels, said memory means being arranged in a plurality of memory array segments each of which includes an input port and having a controller with logic routing table means for entry of the waveform signals into selected memory array segments, and said plug-in units including memory array segment selection means connected via said memory input ports to said processor, said logic routing table means being set by said processor.

11. The electrical measuring and analyzing instrument of claim 7 wherein said modules include releasable plug-in means for selective data acquisition and for data calculation, and wherein said data acquisition input means includes at least one plug-in receptacle means for receiving various data acquisition and data calculating plug-in means, said calculating plug-in means including a resident program memory means, said processor being programmed to read said resident program memory means for controlled processing said data in the data memory array means in accordance with said module resident program memory.

12. The instrument of claim 11 wherein said calculating plug-in means includes a resident memory bank programmed to establish reduction of data in said memory array means by said processor.

13. The instrument of claim 11 wherein said resident program memory means is programmable and said calculating plug-in means includes a memory write coupling means connected to said module resident program memory means for entering a program in said module resident program memory means.

14. The instrument of claim 13 including keystroke input means, said processor reading said keystroke input means and operable to process the waveform data in said waveform memory means in accordance with said keystroke input means and said plug-in resident program.

15. The instrument of claim 7 wherein said plug-in means includes status means for determining the operating condition of the data acquisition unit, said processor including program means for actuating said status means and storing modifying values for correction of stored data by such values.

16. The waveform measuring and analyzing instrument of claim 7 wherein said waveform memory means includes a plurality of memory storage arrays and input ports, one for each of said arrays, said modules being releasable plug-in means having a plurality of channels up the number of said ports for selective data acquisition and introduction of data into said ports, a waveform memory array selection means connected to select the connection of said channels to said ports, an attenuator value setting means, an offset vaule setting means, said processor reading the state of each said array selection means and said attenuator means and said offset means and establishing a routing table for said plurality of channels and storing the setting of the attenuator and offset means for each of said channels.

17. A waveform signal coupling component for releasable mounting within a receptacle in a waveform measuring and analyzing instrument, said instrument including a programmed processor having a processor bus means connected to a processor bus connection means, said coupling component comprising a unitary support means for releasable insertion into said receptacle, signal processing hardware mounted on said support means, functional identifying memory means mounted on said support means for identifying the function of the component, a software program memory array means mounted on said support means, and bus connection means connected to said hardware and to said identifying memory and to said memory array means and having a plurality of terminal means complementing said processor bus connection means of said instruments for releasable coupling thereto and thereby connecting of the hardware and identifying memory and memory array means to said processor.

18. The signal coupling component of claim 17 including interactive keystroke means encoded to software programs resident in said plug-in memory array, and said memory means having keystroke memory means connected to the software bus for coupling by said two part connector to said processor.

19. The coupling component of claim 17 wherein said support means includes a housing having a rectangular cross-section with a horizontal dimension substantially longer than the vertical dimension, and said housing having a front panel with visual information presented in a horizontal line.