Intorduction

The Signal Analyzer JD7108B is the ideal test tool for conformance and performance testing of cell sites. The JD7108B contains all the features and capabilities required to perform field testing of cell sites of all wireless technologies, from 2G to 4G.

Key Measurements

• Spectrum Analyzer

• Interference Analyzer

• Channel Scanner

• Signal Analyzer

• Over the Air Measurements

• Power Measurement

• Auto-measurement capability.

Spectrum Analyzer

The Signal Analyzer has a general purposed spectrum analyzer which is the most flexible test tool for RF analysis. Beyond this basic spectrum analysis functionality, a built in RF measurement application provides a single button RF power measurements including:

• Channel Power

• Adjacent Channel Power

• Spectrum Emission Mask

• Occupied Bandwidth

Interference Analyzer

The Signal Analyzer has an interference analyzer which is the most effective way to identify periodic or intermittent interference.

A spectrogram display allows the user to capture spectrum activity while displaying frequency, power and time information.

The instrument's received signal strength indicator (RSSI) can simultaneously track up to 6 signals which is particularly useful for monitoring multi-signal nearby the cell-site's carrier.

Channel Scanner

The Signal Analyzer has the function of measuring multiple transmitted signals. The channel scanner can measure up to 20 channels in any wireless technology.

Using existing format-based or custom parameters, the user will be able to easily verify improper multi-channel power levels.

Signal Analyzer

The modulation measurement suite of the Signal Analyzer provides not only RF parametric analysis but also modulation quality performance of modern wireless communication systems. The instrument's built-in wireless standard test procedures allow users to test each of the following items with a single button action.

• CDMA2000, EVDO                  

• GSM, GPRS, EDGE

• WCDMA, HSDPA

• TD-SCDMA

• WiMAX-Mobile

• LTE

Over The Air Measurements

The Signal Analyzer provides over the air measurements for a quick performance characterization of the base station. This function is especially useful in testing cell sites which are not easily accessible.

Over the air measurements also perform multipath signal profiles which identify the presence of signal reflections.

Power Meter

The Signal Analyzer can perform two power testing methodologies:

• Internal, for standard power measurements without the assistance of external power sensors.

• External, for high accuracy power measurements with the assistance of external power sensors.

The internal power meter, with no additional power sensors, uses the spectrum analyzer functionality. It is a simple test methodology with reasonable accuracy.

On the other hand, external power sensors perform power measurements more accurately. The Signal Analyzer can be equipped with Terminating Power Sensors or Directional Power Sensors (through-line) which have the advantage of performing in-service power measurements.