Abstract: A range to fault (RTF) module (100) for use in a system for locating faults in a cable network is discussed. The module includes an input port (101) for coupling the module to a PIM analyzer. The module (100) also includes an output port (102) for connection to the device under test (DUT). In addition to the input (101) and output (102) ports the module is provided with a monitor port (103) for receipt of a PIM signal from the PIM analyzer. The module in this instance also includes two USB ports (104a), (104b) enabling a serial connection between the PIM analyzer and the module (100).

Abstract: The present invention relates to a device for the location of passive intermodulation faults in a coaxial cable network. The test apparatus (100) according to one embodiment of the present invention utilizes a pair of high-power, frequency-synthesized, unmodulated RF carriers v1(t) (101) and v2(t) (102) are generated inside the HPA module of the apparatus. The power and frequency of v1(t) (101) and v2(t) (102) can be independently set to a range of values, v1(t), v2(t) are combined inside the instrument and then applied to the input of the device under test (DUT). The PIM signals (107,108,109) generated in the DUT are combined to produce the primary PIM signal vIM(t) (103). The apparatus also includes two receivers (110,111, 112,113,114,115) for the detection of vIM(t) 103 and vREF(t) (104). These signals are downconverted to 455 kHz.

Abstract: A range to fault (RTF) module (100) for use in a system for locating faults in a cable network is discussed. The module includes an input port (101) for coupling the module to a PIM analyser. The module (100) also includes an output port (102) for connection to the device under test (DUT). In addition to the input (101) and output (102) ports the module is provided with a monitor port (103) for receipt of a PIM signal from the PIM analyser. The module in this instance also includes two USB ports (104a), (104b) enabling a serial connection between the PIM analyser and the module (100).

Abstract: The present invention relates to a device for the location of passive intermodulation faults in a coaxial cable network. The test apparatus (100) according to one embodiment of the present invention utilises a pair of high-power, frequency-synthesised, unmodulated RF carriers v1(t) (101) and v2(t) (102) are generated inside the HPA module of the apparatus. The power and frequency of v1(t) (101) and v2(t) (102) can be independently set to a range of values, v1(t), v2(t) are combined inside the instrument and then applied to the input of the device under test (DUT). The PIM signals (107,108,109) generated in the DUT are combined to produce the primary PIM signal vIM(t) (103). The apparatus also includes two receivers (110,111,112,113,114,115) for the detection of vIM(t) 103 and vREF(t) (104). These signals are downconverted to 455 kHz.

Abstract: A portable test apparatus for conducting a plurality of tests on a communications device is provided. The unit can include a control panel, which can include at least one display for displaying test information from the device under test. The apparatus can also include a frequency mixing assembly, an amplifier module, a voltage regulator module, and a frequency module. The apparatus can allow a user to measure a number of parameters including, but not limited to, power, return loss and passive intermodulation products.

Abstract: In one aspect of the present invention there is provided a portable test apparatus 100 for a communications device/system said apparatus including, a display 103 for displaying test information from the communications device/system, a filter assembly 122 and a control assembly 124 comprising at least one printed circuit board and a housing wherein the at least one printed circuit board and the housing co-operate to electrically isolate one or more components disposed on said at least one printed circuit board.

Abstract: At present a number of frequency bands in the region of 450, 950, 900, 1700, 1800, 1900 and 2100 MHz are utilised for cellular and mobile communications, additional bands are under consideration for future expansion of such wireless communication systems. Recently, placing UMTS signals into existing GSM spectrum has received increasing levels of interest. The present invention is directed to systems and methods of combining GSM and UTMS signals in a shared methodology that offers good isolation. A number of different combiner structures are disclosed, the various combiner types each utilise differing transmitter ports topologies to effect the placement of UTMS signals within the existing GSM spectrum and vice versa.

Abstract: In one aspect of the present invention there is provided a portable test apparatus 100 for a communications device/system said apparatus including, a display 103 for displaying test information from the communications device/system, a filter assembly 122 and a control assembly 124 comprising at least one printed circuit board and a housing wherein the at least one printed circuit board and the housing co-operate to electrically isolate one or more components disposed on said at least one printed circuit board.

Abstract: A portable test apparatus for conducting a plurality of tests on a communications device is provided. The unit 102 comprises a control panel 105 comprising at least one display 108 for displaying test information form the device under test. The apparatus includes a frequency mixing assembly 118, an amplifier module 119, a voltage regulator module 120 and a frequency module 120. The apparatus allows a user to measure a number of parameters including but not limited to power, return loss and passive intermodulation products.