This small handheld device checks for the most frequently found cable connection faults seen with PROFIBUS DP wiring between pairs of 9-pin D-sub PROFIBUS plugs and over daisy chained PROFIBUS cables. Connection Checks Software checks for and reports open lines, short circuits between cores, shorts between screen and cores, and crossed connections. These failure types are reported on a red background with sound signal and text details shown on the front panel color display. Correct connection test results are reported on a green screen with a different sound signal. The number of activated terminator switches detected on the tested cable are also shown. Detection of 3 or more terminators is reported as a fault. All fault reports are emphasized by display of associated conductor color information, showing green background for A line, red background for the B line and black for the cable screen/shield. Test Tone Signals The HP-25 allows test tone output onto the PROFIBUS A line, potentially helping to confirm clear separation of IN and OUT cables at a remote location before connection to plug or other unit. Correct orientation of cables within all PROFIBUS plugs and slaves is important to help with subsequent segment commissioning and later fault-finding, as setting of terminator switches at each slave will then allow disconnection from the ongoing cable and later slaves . These tone signals may be heard using commonly available detector probes. The HP-25 Cable Tester is able to detect: Open lines Short circuits between cores Shorts between screen and cores Crossed connections It is powered by a single 9 volt PP3 battery, with re-chargeable versions also suitable. NOTE: This tester is only suitable for use on unpowered cables! Package Contents : HP-25 base unit 2x 9V battery Silver end of cable test plug Strong hard-shell carrying case
