Z Technology, Inc. globe1.gif

For Immediate Release

Contact: Jason Somera

1815 NW 169th Place, Suite 3070
Beaverton, OR 97006 USA
503/ 614-9800
888/ 613-9832
Fax 503/ 614-9898


Z Technology introduces the New DVS5100, Windows based Digital Television
and Digital Audio Signal Mapping System.

The DVS5100 is a new RF field strength and digital parameter mapping system. Using this Windows based system; a Broadcaster can easily generate signal strength and figures-of-merit parameters for Digital DVB-T, DTV & DAB signals and map these over a service area. Analysis leading to corrective actions can quickly be determined in the field leading to improvements in geographic signal coverage.

The DVS5100 system takes advantage of the precision and flexibility of Z Technology’s new R-507 Field Strength Meter which provides accurate, high-speed measurement under PC control. When used with a calibrated antenna, the DVS5100 provides a comprehensive facility for NIST traceable RF power measurement and documentation of digital or analog signal coverage.

This unique turnkey system includes the factory installed Automated Drive Test Measurement Software Program, a single-windows based program that uniquely integrates three separate yet related applications: Data Collection, Dot Plotting, and Swept Spectrum Analysis.

Data Collection automates the process of logging precise RF characteristic including field strength measurement, digital signal figures-of-merit parameters (peak signal power, integrated power, band pass tilt, signal notches and standard deviation) and associated GPS location. The application is started before the vehicle is placed in motion, and the system accumulates data without further attention.

Live plotting of the GPS locations can be viewed while testing is in process and for many locations can be overlaid on maps. Full road level maps for Europe, Canada and the USA are offered as part of the standard product. Other locations have varying levels of map detail. Upon completion of the drive test, a post measurement mode assigns colors to the dot trail of the driven path where colors correspond to signal strength, or any one of the selected figures-of-merit. For user in the United States, Z Technology has also developed translator software to overlay color-coded signal strength plots on commercially available digital street maps.

If desired, data can also be collected through detailed carefully controlled methods. The Data Collection Software allows an operator to drive to a specific known locations, make a select number of measurements of all the chosen frequencies, pause the Drive Test System and move to the next location of interest. This process can be repeated as many times as are needed to characterize and analyze signal coverage. In this way measurements can be recorded only at desired reference locations. These data files will contain exclusive information only for the desired geographic positions.

The Swept Spectrum Analysis portion of the system shows a unique live spectrum of the signals under test. The user may at any time pause the data collection, quickly look at the desired signal or spectrum, and then resume data collection all within the drive test program. The Swept Spectrum display is useful in active viewing and analysis of band pass tilt, signal notches, and total power of digitally modulated signals such as DVB-T, DTV and DAB. Under control of the system PC, the DVS5100 will measure and display total power in a user-defined bandwidth, peak power in the band, and signal strength versus frequency over total sweep spans of 5, 10, or 20 MHz. These parameters are the same ones that can be plotted against GPS locations via the mapping capability of the System Software.

For analog and digital signals, the Spectrum Display allows a user to examine adjacent channel occupancy and relative power levels of nearby signals. The Spectrum Display is also useful when analyzing modulation characteristics of AM, FM, CW, or spread spectrum type signals.

An operator can easily switch between Spectrum Display and Data Collection applications, or can use the R-507 with its front panel LCD display in a stand-alone mode for precision measurements across a frequency range of 5 to 1000 MHz.

The new DVS5100 combines the functions of off-air field strength metering, accurate RF signal strength measurement, Digital signal characterization, GPS position identification, and PC based automatic data collection and storage in one convenient lightweight system. Its small size permits transport as hand-carry airline baggage; easy temporary installation in a vehicle; quick setup at field locations; and portability to characterize RF and Digital signals at remote site.

Z Technology, Inc. is a leading innovator in precision RF measurements. Founded in 1993 and headquartered in Beaverton, Oregon USA, Z Technology designs and manufactures equipment for the global wireless and television markets. Z Technology remains committed to helping customers meet industry challenges of today and tomorrow.

DVS5100 Swept Spectrum Analysis
Unique Pop-Up form factor makes Z technology's
New DVS5100 system easy to operate
and extremely portable.

DVS5100 Swept Spectrum Analysis
New Windows based Drive Test Analysis software application
from Z Technology reports field strength condition of
transmitted signal overlaid on digital street map.

.DVS5100 Swept Spectrum Analysis
New Swept Spectrum Analysis application provides ability to detail
both analog and digital RF signals.

.DVS5100 Swept Spectrum Analysis
New Swept Spectrum Analysis application provides ability to detail
both analog and digital RF signals.

DVS5100 Swept Spectrum Analysis
New Swept Spectrum Analysis application provides ability to detail
both analog and digital RF signals.

DVS5100 Swept Spectrum Display
Swept Spectrum Display for visual analysis of digital RF signals. The
new DVS5100 provides Data Logging of digital Figure-of-Merit
Parameters such as Integrated Power, Peak Power, Tilt, etc.

DVS5100 Specifications

A Windows based RF field strength & digital parameter Drive Test Mapping System contained in a portable carrying case. The DVS5100 is designed for TV and Radio Broadcast applications where it is desired to measure standard received signal strength plus RF Figures-of-Merit parameters for such digitally modulated systems as DVB-T, ISDB, DTV, DAB.

The DVS5100 is designed to allow user selection of bandwidths over which digital signals will be analyzed. This bandwidth can be set from below 1MHz to above 8MHz thus matching the transmitted channel width of virtually every Terrestrial Broadcast Digital Network.

Survey results are easily plotted and mapped over a coverage area. This turnkey system integrates Data Collection, Dot Plotting, Swept Spectrum Analysis and RF Figures-of-Merit Parameter measurements into one system.


System RF Specifications

Frequency Range

Coverage of all VHF & UHF Systems Television Channels. Extended coverage form 5MHz to 1000 MHz with minimum step sizes of 1KHz

Measurement Range

-10 dBm V to + 90 dBm V (-117 dBm to -17 dBm) using 4 internal Attenuation Ranges & 1 Preamp Range

Measurement Accuracy

+/-2 dB @ 25 degree +/- 10 degree C; In Field Strength Meter Mode

Typical: Sweep Modes and for Temperature = 0 to 50 degree C

Some modulation types influence measurement accuracy. For analog video modulation, the signal level of the Vertical Sync Peak is measured. This adds 0.5dB additional uncertainty, widening the above specification to +/- 2.5dB.

RF Signal Parameter Measurements and Storage

Power Readout Capable in the following units: dBm, dBuV or dBuV/Meter

Analog Signals:

Field Strength in user selected power units (as indicated above) measured and recorded to data files.

Digital Signals:

RF Figures of Merit signal parameters measured & recorded to data files

(Bandpass settable from 1 -- 8 MHz):

  1. Total Integrated Power
  2. Peak Power
  3. In-Band Tilt
  4. In-Band Notches(Hi-Lo Diff)
  5. In-Band Std Deviation

Image Rejection

60 dB typical, High Sensitivity mode

Detuning Characteristics

40 dB typical; for undesired signal 2x IF BW away from center frequency

Third Order Intercept

Preamp ON 0 dBm, typ.
Preamp OFF +20 dBm, typ.

Noise Figure

Preamplifier NF = 7 dB typical when RF AMP is selected

Audio Detection

AM or FM to internal speaker selected from front panel, also available on meter rear panel.


FM detection: 1 m V for 12 dB SINAD typical AM detection: 1 m V for 12 dB S/N typical

System Measurement Resolution


Output Linearity Range

Continuous measurement range of 80 dB in auto-ranging mode

IF Bandwidth

Narrowband = 15 KHz
Wideband = 150 KHz

Input Impedance

50 Ohm

Applications Software, Data Storage & Data Formats

Applications Software

Windows 95/98 based Automated Drive Test Measurement Software includes the following

  1. Data Collection: Provides for orderly collection and storage of RF Figures-of-Merit Parameters outlined in the above section.
  2. Dot Plotting/Mapping: Allows GPS locations to be plotted and viewed during and after testing. Colors are assigned to the dot trail of the driven path and indicate range of parameter. Colors correspond to any one (1) selected RF Figures-of-Merit Parameter.
  3. Sweep Spectrum Analysis: Displays swept frequency spans of 5MHz, 10MHz, or 20MHz spectrum. All measured RF Figures-of-Merit Parameters are displayed for users review and analysis.

Data Storage

Data Stored on PC Hard Drive under open folder and file hierarchy

Data Format

Format is comma delimited nonproprietary files accessible for importing into other standard utilities. Data recorded into files include: date, time, frequency, latitude, longitude, elevation, speed, power, integrated power, peak power, tilt, high-low diff, std dev

GPS Receiver and Antenna Specifications

General Description

L1 frequency, C/A code (SPS), 8-channel continuous tracking receiver, 32 correlators

Antenna Connector


Update rate



Position & Velocity: 25 m CEP (50%) & 0.1 m/sec (without S/A)


Time: 95 nanoseconds RMS (over-determined clock mode)

DGPS accuracy

Position: 2 m CEP (50%) Velocity: Velocity: 0.05 m/sec

Acquisition (typical)

Cold start:<130 seconds(90%) Warm start:<45 seconds(90%) Hot start:<20 seconds(90%)


Cold start requires no initialization. Warm start implies last position; time and almanac are saved by back-up power. Hot start implies ephemeris also saved.

Reacquisition after signal loss

< 2 seconds (90%)

GPS antenna

Compact, active micropatch antenna with 5-meter cable and magnetic mount. 1.60" x 1.90" x 0.55" high (40.6mm x 48.3mm x 13.9mm)


Laptop Computer

Pentium class, 600 MHz, 64 Mb Memory, 12 G-byte Hard Drive, or better

System Physical Specifications

System Power Requirements

12VDC at 3.0AMP (or 120/220VAC)

Power Inverter

12V DC input, 120V AC output, 150 watts



System Dimensions

216 mm (8.5 in) High 375 mm (14.75 in) Deep470 mm (18.5 in) Wide

System Weight

13.9 Kg (29 lbs.)

System Operating Temperature

+10 to +40 Deg. C