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Tektronix

2721A

Sweep Generator, CATV

Tektronix 2721A Sweep Generator, CATV

Description

The Tektronix 2721 A / 2722 A Non-Interfering Sweep System offers cable television (CATV), provides a simple, yet comprehensive tool for verifying and maintaining cable distribution performance from head end to subscriber drop. To do this, the 2721 A / 2722 A sweep system provides the following key measurements: * Swept frequency response * Automatic pilot level measurements * Signal level measurements (SLM function) * AC and DC voltage * Ambient temperature (in degrees F or degrees C) A key feature of the 2721 A / 2722 A system is that swept frequency-response measurements can be made at any time without interfering with subscriber reception of programming. Measurements can also be made on channels that have no carriers present. The 2721 A / 2722 A non-interfering sweep system consists of two instruments. These are: - 2721 A Sweep Transmitter: 5 bis 600 MHz - 2722 A Sweep Receiver: comes with Option 01 - YT1 chart recorder The 2721 A sweep transmitter is installed at the CATV head end and set up for the CATV system's specific channel configuration. Once installed and set up, the 2721 A sweep transmitter continuously sweeps RF test pulses through the selected channel configuration. Since the method of sweeping is non-interfering, there is no interruption of subscriber service. And, because channel sweeping is continuous and unattended, the 2722 A sweep receiver can be taken into the field at any time for frequency-response measurements. To achieve non-interfering sweeps, the 2721 A/ 2722 A sweep system uses RF test pulses rather than continuous frequency sweeps. These test pulses are then injected during the cable signal's vertical blanking interval to avoid picture interference.

Specifications

    The Tektronix 2721 A / 2722 A Non-Interfering Sweep System offers cable television (CATV), provides a simple, yet comprehensive tool for verifying and maintaining cable distribution performance from head end to subscriber drop. A key feature of the 2721 A / 2722 A system is that swept frequency-response measurements can be made at any time without interfering with subscriber reception of programming. Measurements can also be made on channels that have no carriers present. The 2721 A sweep transmitter is installed at the CATV head end and set up for the CATV system's specific channel configuration. Once installed and set up, the 2721 A sweep transmitter continuously sweeps RF test pulses through the selected channel configuration. Since the method of sweeping is non-interfering, there is no interruption of subscriber service. And, because channel sweeping is continuous and unattended, the 2722 A sweep receiver can be taken into the field at any time for frequency-response measurements. To achieve non-interfering sweeps, the 2721 A/ 2722 A sweep system uses RF test pulses rather than continuous frequency sweeps. These test pulses are then injected during the cable signal's vertical blanking interval to avoid picture interference.

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