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Telephone

convert voiced sound to an electric signal for transmission over a network.

See Also: Phone, Telephony, Geophones, Headphone, Hydrophones, Microphones, DTMF


Showing results: 121 - 135 of 140 items found.

  • Utility Locator

    VM-850 - Vivax-Metrotech Corp

    Using the correct frequency makes a world of difference when locating buried utilities. The depth of the utility, size, material, and amount of congestion (proximity of other utilities) all need to be taken into consideration for the correct frequency selection. Large diameter, direct buried pipes with bell housing ends that use insulators and rubber gaskets, such as water or gas require a higher frequency while smaller diameter, well-grounded direct buried or long distance in conduits work, better with a lower frequency. The VM-850 operates at a much lower frequency of 9.82kHz which is ideal for smaller diameter utilities such as CATV, power and telephone with less bleeding onto adjacent services.

  • Mobile Communications DC Source, 15V, 3A

    66311B - Keysight Technologies

    The Keysight Mobile Communications DC Source 663xx series offers several features ideal for testing wireless and battery powered devices. Excellent voltage transient response ensures maximum test-system throughput by minimizing device shutdowns due to significant voltage drops in the test wiring. Built-in advanced measurement system to accurately measure battery current drains when the device operates in different modes and a Keysight-developed feature that enables cellular telephone manufacturers to detect permanently and intermittently open-sense wire connections.The Keysight 66311B mobile communications DC source provides fast transient, exceptional sourcing, and precision measurement.

  • Conformity Assessment

    Compatible Electronics

    For FCC approvals, we operate an accredited Telecommunications Certification Body (TCB).The TCB system was implemented in 2000 by the Federal Communications Commission (FCC). It was created to allow the FCC to step out of the product approvals role, and to focus more on regulating and market surveillance.Until this system was implemented, most products which intentionally radiate radio frequency energy, and products which connect to the public switched telephone network, were required to be certified with the FCC. This usually meant waiting several months for an approval to sell your product. Compatible Electronics TCB (CETCB) can certify these types of products generally in less than two weeks.

  • All-In-One Toner & Probe Kit

    MT-7068 - Prokit's Industries Co., Ltd.

    The MT-7068 All-in-one Toner & probe Kit lets you use Toner and Probe to validate and troubleshoot wiring on RJ11/RJ45 cables and connectors, USB, F, BNC, and RCA connectors, and it also supplied with alligator clips to work with. The MT-7068 Toner detects telephone and Ethernet service, indicates polarity and active line numbers on voice circuits, and indicates active pair number on Ethernet circuits. The MT-7068 Toner and Probe also provide standard functions such as visual and audible signal strength indication, analog toning/detection, and continuity testing. It is ideal for all maintenance fields of telecommunication, networking, datacom, Audio/Video, cable TV, and all weather cabling , etc.

  • Electroacoustic Analysis System

    CRY6151B - CRYSOUND

    CRY6151B is a full-featured electroacoustic tester newly launched by CRY Sound. It is powerful and stable. It can measure the performance indicators of headphones (USB, Bluetooth, anti-noise), microphones (electret, MEMS, moving-coil type), headphone and microphone assemblies, receivers/headphone speakers, speakers/loudspeakers (common, Bluetooth), loudspeaker crossover devices, and other electroacoustic devices, such as sensitivity (SPL), impedance, distortion (THD), resonance frequency F0, left and right headphone balance, left and right headphone position, phase polarity, microphone current and voltage, SNR, microphone directivity, speaker's TS parameters, telephone receiving and sending loudness ratings, etc. Its test frequency range can be up to 20 Hz - 20 kHz.

  • VHF/UHF Handheld Signal Location Antennas

    Type NVF-2 - National RF, Inc

    The Type NVF-2 series of handheld directional antennas are used to locate interfering signals or noise in either the 420 – 470 MHz (Type NVF-2A) or the 900 MHz ISM band or cellular telephone bands (Type NVF-2B). Both models incorporate a solid reflector positioned behind a resonated half wave driven element, both elements being mounted on a fiberglass rod with an integral pistol grip. The configuration of the reflector and driven element are such that a deep null in the signal being received will occur when the antenna is pointed in the direction of the signal being radiated. A T-pad resistive attenuator is also incorporated in the antenna mounting enclosure to aid in the direction finding process on very strong signals or when excessive reflections present multiple returns.

  • Portable Line Tester

    DR-5 - Daerim Electronics Co.

    The DR-5 is designed for repairing line faults and installing new telephone lines, especially for the MDF in unmanned offices which do not have their own test board.1. Insulation resistance measuring2. Loop resistance measuring3. DC voltage measuring4. Terminal, Line capacity measuring5. Subscriber calling6. Dialing(Tone, Pulse type)7. Transmitting, receiving, waiting, and three way calling8. Test tone transmitting9. Four type melody soundInsulation resistance measuring range: DC180V / 50Mega OhmLoop resistance measuring range : 0 ~ 500Kilo OhmDC voltage measuring range : 0 ~ 150VRing signal Range : 20Hz / 75VPower : DC12V, AC 85~260 Free voltageDimension : 330 * 220 * 140(m/m)Weight : 3.5kg

  • Electroacoustic Analysis System

    CRY6151 - CRYSOUND

    CRY6151 Electroacoustic Analysis System is a full-featured electroacoustic device tester launched by CRY Sound. It has a history of 10 years. It is powerful and stable. It can measure the performance indicators of headphones (USB, Bluetooth, common), microphones (electret, MEMS, moving-coil type), headphone and microphone assemblies, receivers/headphone speakers, speakers/loudspeakers (common, Bluetooth), communication helmets, loudspeaker crossover devices, and other electroacoustic devices, such as sensitivity (SPL), impedance, distortion (THD), resonance frequency F0, left and right headphone balance, left and right headphone position, phase polarity, microphone current and voltage, SNR, microphone directivity, speaker's TS parameters, telephone receiving and sending loudness ratings, etc. Its test frequency range can be up to 20 Hz - 20 kHz.

  • FCC Testing and Certification

    Washington Laboratories LTD.

    Washington Labs provides FCC Testing and has many years of experience and expertise in the following:FCC Part 15 Testing for Computing Devices, Cordless Telephones, Satellite Receivers, TV Interface Devices, Receivers, Low Power Transmitters, and Spread Spectrum Transmitters, UNII & others.FCC Part 22 Testing for Cellular TelephonesFCC Part 25 Testing for Satellite CommunicationsFCC Part 90 Testing for Private Land Mobile Radio Services – Includes Paging Devices and Mobile Radio TransmittersFCC Part 95 Testing for Personal Radio ServicesFCC Part 18 Testing for Industrial, Scientific, and Medical Equipment i.e. Microwave, and RF Lighting Ballast (ISM)FCC Part 24 Testing for Personal Communications SystemsFCC Part 80 Testing for Marine Radio Transmitters

  • Outdoor AGC Optical Node

    SR814B - Hangzhou Softel Optic Co., Ltd.

    Based on plenty of experience about CATV HFC network optical fiber transmission equipment, we developed SR802, SR802B, SR804, SR804B series field optical receiver which is two-way optical receiver; They are mainly used in long-distance optical fiber transmission of TV image signal, digital TV signal, telephone voice signal and data (or compressed data) signal. We are innovating the product technology, rebuilding the line structure and Improving the process quality since we developed the first CATV optical receiver successfully in 1995; The current WR series optical receiver are not only of the lead position in domestic level regarding line technique, but also the same as imported product regarding technological quality; We have developed a variety of different models for users to choose models.

  • Outdoor AGC Optical Node

    SR814 - Hangzhou Softel Optic Co., Ltd.

    Based on plenty of experience about CATV HFC network optical fiber transmission equipment, we developed SR802, SR802B, SR804, SR804B series field optical receiver which is two-way optical receiver; They are mainly used in long-distance optical fiber transmission of TV image signal, digital TV signal, telephone voice signal and data (or compressed data) signal. We are innovating the product technology, rebuilding the line structure and Improving the process quality since we developed the first CATV optical receiver successfully in 1995; The current WR series optical receiver are not only of the lead position in domestic level regarding line technique, but also the same as imported product regarding technological quality; We have developed a variety of different models for users to choose models.

  • Outdoor AGC Optical Node

    SR812 - Hangzhou Softel Optic Co., Ltd.

    Based on plenty of experience about CATV HFC network optical fiber transmission equipment, we developed SR812, SR812B, SR814, SR814B series field optical receiver which is two-way optical receiver; They are mainly used in long-distance optical fiber transmission of TV image signal, digital TV signal, telephone voice signal and data (or compressed data) signal. We are innovating the product technology, rebuilding the line structure and Improving the process quality since we developed the first CATV optical receiver successfully in 1995; The current WR series optical receiver are not only of the lead position in domestic level regarding line technique, but also the same as imported product regarding technological quality; We have developed a variety of different models for users to choose models.

  • 100 Watt Dynamic Measurement DC Source, 20V, 5A

    66332A - Keysight Technologies

    The Keysight Mobile Communications DC Source 663xx series offers several features ideal for testing wireless and battery powered devices. Excellent voltage transient response ensures maximum test-system throughput by minimizing device shutdowns due to significant voltage drops in the test wiring. Built-in advanced measurement system to accurately measure battery current drains when the device operates in different modes and a Keysight-developed feature that enables cellular telephone manufacturers to detect permanently and intermittently open-sense wire connections. The Keysight 66332A Dynamic Measurement dc Source provides dynamic measurement and analysis of voltage and current waveforms. It is ideal for testing digital wireless communications products/components because it not only provides the power for testing, but also performs the peak current measurements required to characterize the pulsed current demands of these products.

  • Dual Mobile Comm DC Source w/ Battery Emulation

    66319B - Keysight Technologies

    The Keysight Mobile Communications DC Source 663xx series offers several features ideal for testing wireless and battery powered devices. Excellent voltage transient response ensures maximum test-system throughput by minimizing device shutdowns due to significant voltage drops in the test wiring. Built-in advanced measurement system to accurately measure battery current drains when the device operates in different modes and a Keysight-developed feature that enables cellular telephone manufacturers to detect permanently and intermittently open-sense wire connections. The Keysight 66319B dual output mobile communications dc source provides two outputs for testing both the main battery power and the battery charger circuitry, allowing customers to test phones and chargers with the same equipment. This feature helps save on rack space (2 outputs in a rack box) and eliminates the need for two separate power supplies.

  • Cable Tracers

    162 CB - Standard Electric Works Co., Ltd

    Filter Probe● Works with any Tone Generator to identify wires.● Volume control for increasing sensitivity and adjustable to suit work environment.● 2 operation modes: Filter on / Filter off.● The auto-off function (5 minutes) prevents battery consumption.● Power supply is available in any 9V battery with a life of approximately 50 hours.● A phone jack is designed for headset or handset.● Flashlight function.Tone Generator● Tone Generator is a great tool for locating and identifying cable pairs or individual conductors.● 162 CB-G doesn't only provide the function of a tone generator, but also serves as a continuity and polarity tester.● A tone selector switch located inside the unit for selection of the fast tone or the slow tone.● Two bi-colored LEDs for Line1 and Line 2 indication of the polarities of the telephone lines.● The unit has alligator type terminals, a modular cable of 4 conductors with a strong connector.● The tone and continuity functions are only applied to Line1. (Modular connector)

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