Portable circuit testing system

• US 4,329,643 A
• Filed: 03/13/1980
• Issued: 05/11/1982
• Est. Priority Date: 03/13/1980
• Status: Expired due to Term

• Current Assignee: Frank U. Zimmerman, Gunter H. Wallstab, Lawrence A. Durante, Lutz R. Heike, Manfred H. Neumann
• Original Assignee: Frank U. Zimmerman, Gunter H. Wallstab, Lawrence A. Durante, Lutz R. Heike, Manfred H. Neumann
• Inventors: Durante, Lawrence A., Zimmerman, Frank U., Heike, Lutz R., Neumann, Manfred H., Wallstab, Gunter H.
• Primary Examiner(s): Karlsen, Ernest F.
• Application Number:
  US06/129,859
• Time in Patent Office: 789 Days
• Field of Search: 324/158 F, 324/158 R, 324/73 R, 340/514
• US Class Current: 324/750.3
• CPC Class Codes: G01R 31/2827 Testing of electronic protection circuits testing switches G01R31/327; checking alarm systems G08B29/00; self test of summation current transformers H02H3/335
• CPC Class Codes: G08B 29/14 checking the detection circuits

Abstract

A portable system for testing and adjusting security alarm system modules where an alarm module is removed from the security system and inserted into the test system, an adapter card, connected to the test system, replaces the module, whereby the alarm system continues to function normally, the alarm circuit is then tested for voltage, current and continuity and necessary adjustments made.

Claims

1. In a security system having a master panel with an audio alarm and readout module subsystems, each module subsystem having indicator lights for visually indicating a tripping of the subsystem for alarm indication, and switches for setting or resetting the alarm subsystem, and a connector as a part thereof adapted to mate with a module mounting mating connector on said master panel,

the improvement comprising a test arrangement which allows for regular operation or testing and adjustment of a module at a position remote from said master panel, said test arrangement comprising

a card adapter including a connector configured to mate with a module mounting connector of said master panel and an extension cable having wires connected at one end with said card adapter connector and at the other end with a second connector,

a test unit having a mounting connector configured to correspond to a mounting connector on said master panel for mounting a module to be tested, a third connector adapted to join with said second connector of said card adapter for transmitting any signal directed from said master panel to a module to be tested to allow for remote operation and testing of a module mounted in said test unit, a power supply, and switching means for selectively connecting said card adapter extension cable to a module to be tested for operation of said module by said master panel and for applying internally generated signals from said power supply to provide a test of said module.

2. In a security system as defined in claim 1 wherein said improvement includes said card adapter having means to indicate power output from said master panel to said card.

3. In a security system as defined in claim 1 the improvement including means for enabling the power supply of said test unit to allow for bench testing of a module without access to a master panel.

4. In a security system as defined in claim 1 wherein said test unit includes an audible alarm different from that utilized with said master panel for checking operation of said module.