Communications Transmitters Dealers in Nagpur

• Type: Rf Transmitter
• Brand Name: Optilink
• Color: Blue
• Warranty: 1
• Optical Connector: SC
• Wavelength: 1310nm
• Usage: CATV NETWORKS

13 dbm Transmitter offers great flexibility to meet the demand of today’s CATV requirements. It is ideal for offering a combination of analog and digital content. Features: • Gain control RF and input level • Excellent linearity • Convenient maintenance  

Digital transmitters with integral diagnostics function, HART, PROFIBUSPA or Fieldbus Foundation communication, and convenient key operation. Within a range from 1 mbar to 400 bar, the SITRANS PDS III works well even with extreme chemical and mechanical load s or electromagnetic influences. It offers additional safety functions such as plant and self-monitoring, fault diagnostics and provides maintenance messages advising when the next calibration is due. The self- test function is unique for fail -safe operation . Measuring cells can be quickly and easily replaced so that on-site repairs are fast, simple and cost-effective . In addition to convenient local operation, SITRANS P transmitters can be connected to networks using the PROFIBUS PA, Foundation Fieldbus, or HART protocol. SITRANS PDS III is designed for nominal pressures up to PN420 . The wetted parts are available in stainless steel, Tantalum, Hastelloy®, Mon el®, or gold plated . Explosion -proof versions are also available. The high safety level is documented by globally recognized certificates, including ATEX, SIL, CENELEC, FM, CSA, NEPSI. It is tested according to the NAMUR guidelines. Many different versions of remote seals are available. Adjust the zero , span , damping and other functions using three push buttons and the large, freely-programmable display. The versatility required for every application is integral in the SITRANS P. Whether manual or HART operation , or operation via SIMATIC Process Device Manager (PDM),everything is possible

• Application: Live Streaming
• Lantency: Less 200ms
• Input: HDMI input
• Transmission Power: 20mw

• Type: Transmitter
• Weight: 50-65gm
• Power: 12 - 15 VDC 500mA 5 x 1.2 mm
• Frequency Response: 20 Hz - 12.5 kHz
• Input Impedance: 100KΩ Unbalanced
• Series: D816R

FM Transmitter is used for wireless listening to TV sound or a short range repeater. This low power transmitter for the VHF FM band has many applications such as a wireless babysitter or a short-range repeater. The transmitter may also be used for wireless listening to TV sound.About the Circuit : As shown in the circuit diagram, microphone MIC receives its bias voltage via resistor R1. The microphone signal is amplified by transistor T1. The amplified microphone signal may be taken from C2. When the transmitter is used for line signals, the microphone preamplifier is not used. Since these signals are going to the capacitor C6. The voice- operated switch receives at the preset P1. Preset P1 determines the input level. The signal at the wiper of P1 is fed to one of the inverter of IC1 at pin9 through capacitor C3. The next inverter at pin11, functions as a limiter. The rectified signal obtained through diodes D1/D2, resistor R7 and capacitor C5 raised to a suitable level for controlling switching transistor T2 through three inverter gates of IC1. Depending on the signal level at pin2, transistor T2 is off or on. Thus it controls the power supply to the RF oscillator, T3. Choke L1 prevents the RF signal developed by the oscillator from being short circuited by the power supply lines. LED D5 lights when T3 powers. The AF signal received at C6 is taken through a pre-emphasis network composed of C6/C7/R11 before it arrives on the modulation level control, preset P2. Frequency modulation of the oscillator is achieved by C8 superimposing the modulation signal on the bias voltage of dual varicap D3/D4. Transistor T3 oscillates at a frequency determined by tuned circuit L2/C10/D2, with C11 providing positive feedback the collector and the emitter. The oscillator frequency can be set between 88MHz and about 108MHz by adjusting trimmer C11. Capacitors C9 and C10 decouple the RF and the AF component respectively at the base of T3. The transmitter has given an aerial connection of 5cms wire from the capacitor C14. Its RF signal is radiated by L2.. Power Supply : The circuit requires a DC supply of 9V. Calibration :Initially set P2 at its center and apply an audio signal to the transmitter. Tune FM receiver at 105MHz. Switch the transmitter on. Adjust trimmer C11 until the signal is received. Adjust P2 until the optimum volume setting is obtained without running into distortion.

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