| Patents for H04B 17 - Monitoring; Testing (29,423) |
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| 06/08/1983 | EP0080688A1 Method and device for the detection of data or of signalling on a telephonic path |
| 06/01/1983 | EP0080140A1 A method of and measuring instrument for measuring the overall phase and amplitude distortion of a transmission channel |
| 05/24/1983 | US4385314 Polling pattern generator for CATV system |
| 04/06/1983 | EP0075647A1 Circuit for measuring the reception quality of an FM receiver |
| 03/30/1983 | EP0075295A2 Optical transmission system for high-frequency digital signals |
| 03/30/1983 | EP0075244A1 Regenerator for high-frequency digital signals with an additional low-frequency signal patch |
| 03/01/1983 | US4375698 Apparatus for testing microwave radios having 35 MHz if using test equipment designed for 70 MHz IF |
| 02/08/1983 | US4373206 Transmitter control system |
| 01/25/1983 | CA1140230A1 Method for carrying out loopback test |
| 01/20/1983 | WO1983000231A1 Method for testing analog/digital converters and/or digital/analog converters or sections of information transmission circuits, comprising such converters or connected in series therewith, for communication apparatus, particularly for testing coders-decoders for pcm apparatus, as well as device for implemeting such method |
| 01/18/1983 | US4369523 Remote control system of an optical repeater |
| 01/12/1983 | EP0069398A1 Process for testing A/D and/or D/A converters or electric transmission networks comprising such converters or connected in series with said networks, particularly for testing codecs for PCM apparatuses, and device for the application of said process |
| 01/12/1983 | EP0069214A1 Circuit for measuring the reception quality of an FM receiver |
| 12/21/1982 | US4365346 Built-in linearity testing arrangement for an FM radio system |
| 12/21/1982 | US4365267 Passive data monitor for use with polling pattern generator in CATV system |
| 12/21/1982 | US4365249 Line monitoring device in two-way data communication system |
| 12/07/1982 | US4363131 Built-in group delay testing arrangement for an FM radio system |
| 11/30/1982 | US4361904 Method of testing transceiver and transceiver including testing apparatus |
| 11/30/1982 | CA1136729A1 Monitoring system for telecommunication links equipped with repeaters-regenerators |
| 11/23/1982 | US4360928 Non-interfering on-line receiver test system |
| 11/16/1982 | US4359712 Communications system for automotive vehicles |
| 11/09/1982 | CA1135362A1 Remote monitoring system for remote locating and gain regulating of amplification circuits in data transmission line |
| 11/02/1982 | CA1134915A1 Noise assessment of pcm regenerators |
| 10/19/1982 | US4355215 Remote control systems for telecommunications links |
| 10/12/1982 | US4354054 Caboose signal controlled reporting arrangement for a regenerator chain |
| 09/28/1982 | US4352182 Method of and device for testing the quality of digital speech-transmission equipment |
| 09/28/1982 | US4352103 Industrial control system |
| 09/14/1982 | US4349707 System for measuring the attenuation on a transmission path |
| 09/14/1982 | CA1131729A1 Data transmission system with test loop facilities |
| 09/07/1982 | CA1131311A1 Apparatus and method for monitoring a communications system |
| 08/31/1982 | US4347563 Industrial control system |
| 08/17/1982 | US4345206 Frequency and frequency error counting in test apparatus |
| 08/11/1982 | EP0057417A2 Equipment for supervising the level of a high frequency signal |
| 06/30/1982 | EP0054643A1 Remote monitoring installation with at least one arrangement for the transmission of messages according to a time division multiplex-frequency division multiplex procedure |
| 06/22/1982 | US4336610 Method and an arrangement for address-free fault location by loop closure in message transmission links |
| 06/22/1982 | CA1126361A1 Digital transmission system |
| 06/08/1982 | US4334303 Monitoring system for telecommunication links equipped with repeaters-regenerators |
| 05/04/1982 | US4328589 System for indicating multipath interference in radio receiver |
| 05/04/1982 | US4328581 Adaptive HF communication system |
| 03/16/1982 | US4320532 Apparatus for automatic monitoring of superheterodyne radio receivers |
| 03/09/1982 | US4319080 Method of locating faulty pulse repeaters |
| 03/02/1982 | CA1119256A1 Device for monitoring the performance of a transmitter |
| 02/23/1982 | US4317223 RF Generator monitor circuit |
| 02/23/1982 | US4317214 Apparatus for simulating interference transmissions |
| 02/23/1982 | US4317010 Remote monitoring system for remote locating and gain regulating of amplification circuits in data transmission line |
| 02/09/1982 | US4315330 Multiple data rate testing of communication equipment |
| 02/02/1982 | CA1117603A1 Automatic channel selection |
| 01/27/1982 | EP0044556A1 Method of monitoring repeating regenerators |
| 01/26/1982 | US4313224 Monitoring system of an optical power in an optical repeater |
| 01/26/1982 | US4313210 Thermally responsive power control for a radio transmitter |
| 01/26/1982 | CA1117188A1 Thermally responsive power control for a radio transmitter |
| 01/26/1982 | CA1117187A1 Temperature control circuit |
| 01/20/1982 | EP0044133A2 Apparatus for simulating interference transmissions |
| 01/06/1982 | EP0043308A1 Equipment for the step-by-step remote locating of repeaters of a PCM connection |
| 01/05/1982 | US4309773 Apparatus and method for radio channel selection |
| 12/23/1981 | EP0042229A1 Digital transmission systems |
| 12/08/1981 | CA1114022A1 Radio receiver alignment indicator |
| 12/01/1981 | US4304001 Industrial control system with interconnected remotely located computer control units |
| 11/24/1981 | CA1113158A1 Digital transmission and reception of information |
| 11/17/1981 | US4301539 Supervising system for use in radio transmission |
| 11/17/1981 | US4301538 Remote surveillance and fault location unit for pulse regenerator repeaters |
| 11/17/1981 | US4301536 Multitone frequency response and envelope delay distortion tests |
| 11/10/1981 | US4300239 Optical repeater monitoring system |
| 11/10/1981 | US4300233 Noise assessment of PCM regenerators |
| 11/10/1981 | CA1112347A1 Access module |
| 10/27/1981 | CA1111588A1 Frequency recognizing device for pcm telephone systems |
| 10/27/1981 | CA1111562A1 Method and device for measuring the slope of the envelope delay characteristic of a transmission channel and their application to the automatic equalizer selection technique |
| 10/14/1981 | EP0037575A1 Circuit with a laser diode for transmitting information signals over an optical fibre |
| 10/07/1981 | EP0037071A2 Method of monitoring analogous or digital mobile radio connections |
| 09/15/1981 | CA1109170A1 Arrangement for measuring the line condition of a subscriber's line circuit by means of a measuring resistor |
| 09/08/1981 | US4288748 Method for testing metal detectors |
| 08/19/1981 | EP0033932A1 Combined supervision and fault location in transmission lines for digital signals |
| 08/12/1981 | EP0033470A1 Circuit arrangement for generating a closed loop in a regenerator of a PCM-system |
| 08/05/1981 | EP0033228A2 Industrial control system |
| 07/28/1981 | CA1106086A1 Channel monitoring system |
| 07/22/1981 | EP0032229A1 Transmission line for digital signals |
| 07/14/1981 | US4278979 Method and apparatus for testing survival radios |
| 07/14/1981 | CA1105092A1 Monitor for rf transmitter |
| 07/08/1981 | EP0031506A1 Supervision of transmission lines for digital signals with a higher transmission rate |
| 06/24/1981 | EP0030724A2 Method and device for carrying out objective measurements on digital speech transmission systems |
| 06/16/1981 | US4274156 Monitor for RF transmitter |
| 06/10/1981 | EP0030006A1 Circuit arrangement for the remote supply of intermediate posts in a telecommunication contrivance with monitoring of the output voltage of at least one supply unit |
| 06/10/1981 | EP0030004A1 Circuit arrangement for the remote supply of intermediate posts in a telecommunication contrivance by means of direct current series supply |
| 06/03/1981 | EP0029531A1 Method and arrangement for error localisation in digital communication lines with higher transmission speed |
| 06/02/1981 | US4271513 Method and apparatus for carrying out loopback test |
| 05/27/1981 | EP0029108A1 Method and arrangement for fault location without addressing forming loops in a communication line |
| 05/26/1981 | US4270221 Phaselocked receiver with orderwire channel |
| 05/26/1981 | US4270029 Selection system for digital signal repeaters |
| 05/12/1981 | US4267600 Modulation monitoring apparatus |
| 05/12/1981 | US4267599 Antenna tuning system |
| 05/12/1981 | CA1101074A1 System for transmitting service communications |
| 05/05/1981 | US4266183 Fault locating arrangement for a two-way repeatered transmission link |
| 04/15/1981 | EP0027078A1 Control and diagnostics apparatus for car radios |
| 04/02/1981 | WO1981000915A1 Method and apparatus for testing survival radios |
| 03/24/1981 | US4258436 Multichannel RF signal generator |
| 03/17/1981 | US4257123 Device for monitoring the performance of a transmitter |
| 03/03/1981 | US4254505 Normalization method and apparatus used when quantitatively measuring the reception quality of a received frequency-modulated ultrashort-wave signal |
| 02/24/1981 | CA1096507A1 Modified duobinary regenerative repeater testing arrangement |
| 02/10/1981 | US4250456 Device for demodulating PSK-FM double modulated carrier signals |
| 02/03/1981 | US4249257 Radio frequency signals analyzer |