Are you involved with the deployment of devices that rely on the cellular network?
Or perhaps you're responsible for the design of cellular network solutions?
Then you need the ETM-770!
It's an easy-to-use, low-cost handheld tool for measuring a wide range of Cellular Network Parameters such as RSRP, RSRQ, RSSI, SINR, Signal Strength, Signal Quality, , Cell ID, Network Provider, Bands.
It's designed to help installers of modems, routers, signal boosters and antenna systems;
- Check signal availability for a potential or existing installation
- Determine the best operator for a particular location
- Deploy the right type of antenna
- Test for data transfer to a specific IP address
Watch the video below presented by Manny Romero, ETM Pacific's CEO, to learn more.
Measure 4G,3G,M1, & NB-IoT Signal Strength and Quality with option to log and display data in the cloud.
Key Features and Benefits
- Improve reliability and performance of existing equipment in the field
- Reduce downtime by selecting the most available network in the area, ensuring good signal coverage
- Increase network download speed and network response times.
- Improve battery life and system up-time by reducing power output
- Cost savings and improvements in efficiency, by reducing costly engineer callouts
- Improvements in overall system performance increase revenues and reduce system downtime, which provides better service to end customers and a more reliable service offering
- Surveys global 4G, 3G, CAT M1, NB1/2 networks
- Results analysis can be performed on your PC
- Insightful reports enable quick decisions on antenna selection and placement
- Complete with robust carrycase & accessories
Get in touch with us today and see for yourself how the ETM 770 will improve your installations of modems, routers, signal boosters and antenna systems.
Understanding RSSI, RSRP, RSRQ and SINR
A few acronyms that you will encounter frequently are RSSI, RSRP, RSRQ and SINR, regardless of whether you are installing and managing a cellular router or deploying a cellular signal booster or amplifier system. RSRP and RSRQ are two of the most important performance indicators a modem utilizes when accessing a network.
RSSI is an abbreviation for Received Signal Strength Indicator and is a measure of cellular signal strength. RSSI is used when measuring the strength of 3G networks. RSSI is displayed as a negative number from 0dBm, being the best/strongest signal, to -110dBm, being the weakest or no signal.
| RSSI | Signal strength | Description |
|---|---|---|
| > -65 dBm | Excellent | Strong signal with maximum data speeds |
| -65 dBm to -75 dBm | Good | Strong signal with good data speeds |
| -75 dBm to -85 dBm | Fair | Fair but useful, fast and reliable data speeds may be attained, but marginal data with drop-outs is possible |
| -85 dBm to -95 dBm | Poor | Performance will drop drastically |
| <= -95 dBm | No signal | Disconnection |
RSRP is an abbreviation for Reference Signal Received Power, used when measuring 4G LTE Networks. An LTE-equipped device or a mobile phone would display signal strength in RSRP. An RSRP value closer to 0dBM means the stronger the signal. For example, an RSRP value of -45dBM would be a stronger signal compared to an RSRP value of -115dBM. Many devices show RSSI for LTE connections along with RSRP, but RSRP is a better indicator of signal strength.
| RSRP | Signal strength | Description |
|---|---|---|
| >= -80 dBm | Excellent | Strong signal with maximum data speeds |
| -80 dBm to -90 dBm | Good | Strong signal with good data speeds |
| -90 dBm to -100 dBm | Fair to poor | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -100, performance will drop drastically |
| <= -100 dBm | No signal | Disconnection |
RSRQ is an abbreviation for Reference Signal Received Quality, a signal-noise ratio that measures how much of the signal quality is actually usable. This again only applies to 4G LTE networks. This ratio is determined by the modem by comparing the carrier power to the interference power and determining what is usable. High RSRQ values allow a modem to extract information from a weak signal despite interference.
When the modem needs to determine which towers to connect to, it uses the RSRP and RSRQ values to make its decision. The modem starts by analyzing all nearby towers and comparing the RSRP values of each. It then chooses the one with the strongest RSRP, or if two nearby towers have RSRP values that are close, it then relies on RSRQ to distinguish between them.
| RSRQ | Signal quality | Description |
|---|---|---|
| >= -10 dB | Excellent | Strong signal with maximum data speeds |
| -10 dB to -15 dB | Good | Strong signal with good data speeds |
| -15 dB to -20 dB | Fair to poor | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -20, performance will drop drastically |
| <= -20 dB | No signal | Disconnection |
SINR is an abbreviation for Signal to Interference plus Noise Ratio. As the name implies, SINR is the strength of the signal divided by the strength of any interference. A minimum of -20 dB SINR is needed to detect RSRP/RSRQ.
| SINR | Signal strength | Description |
|---|---|---|
| >= 20 dB | Excellent | Strong signal with maximum data speeds |
| 13 dB to 20 dB | Good | Strong signal with good data speeds |
| 0 dB to 13 dB | Fair to poor | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to 0, performance will drop drastically |
| <= 0 dB | No signal | Disconnection |