Test Equipment

  • Cooney R.
  • Klisch F.
  • Susen C.

The TD-3 test equipment for routine maintenance and troubleshooting procedures is designed to match the high performance of the TD-3 system and is simple and convenient to operate. The units have good long term stability and may be readily interconnected for testing or self-calibration. This is desirable because much of the TD-3 equipment is located in remote, unmanned sites where testing time must be kept to a minimum. The equipment consists of a transmitter-receiver test set mounted in a rolling console and an FM terminal test panel mounted in (and used with) the existing TD-2 FM terminal test set. The major functions of the test set are to measure amplitude and return loss in the 3700 to 4200 MHz (RF) and the 50 to 100 MHz (IF) frequency ranges, AM noise figure, frequency, and RF and IF power. These are similar to the functions of other test consoles,1-2 but significant advances have been made in implementation. Solid state devices and RF coaxial instrumentation made such advances possible. Accurate IF frequency markers, low level power measurements, and direct reading frequency measurements are used extensively. The FM terminal test panel is designed to enable the TD-2 FM terminal test set to test TD-3's 3A FM terminals. A major influence to this approach was that the 3A terminals3 are now standard equipment in TD-2 production and are replacing TD-2 terminals in the TD-2 improvement program. Because many 3A terminals are being 1459

Recent Publications

August 09, 2017

A Cloud Native Approach to 5G Network Slicing

  • Francini A.
  • Miller R.
  • Sharma S.

5G networks will have to support a set of very diverse and often extreme requirements. Network slicing offers an effective way to unlock the full potential of 5G networks and meet those requirements on a shared network infrastructure. This paper presents a cloud native approach to network slicing. The cloud ...

August 01, 2017

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

July 12, 2017

PrivApprox: Privacy-Preserving Stream Analytics

  • Chen R.
  • Christof Fetzer
  • Le D.
  • Martin Beck
  • Pramod Bhatotia
  • Thorsten Strufe

How to preserve users' privacy while supporting high-utility analytics for low-latency stream processing? To answer this question: we describe the design, implementation and evaluation of PRIVAPPROX, a data analytics system for privacy-preserving stream processing. PRIVAPPROX provides three properties: (i) Privacy: zero-knowledge privacy (ezk) guarantees for users, a privacy bound tighter ...