 |
||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
||||
 |
 |
 |
||||
ZC185
The ZC 185 is a quality instrument that detects and displays RF (Radio Frequency) signal levels with uniquely high sensitivity, similar to a broadband receiver. It provides Linear and Logarithmic measurements of RF signals over a broad span of frequencies. The ZC 185 allows the user to detect and measure signal strength and to distinguish between analog and digital transmissions. FEATURES Simultaneous detection of RF transmitted signals over a wide spectrum of frequencies spanning from 3 MHz to over 5 GHz, including cellular phones and wireless phones, FM, TV and short wave broadcasts, computer wireless devices, wireless security systems, microwave ovens, ham radio, police and service bands, and transmitting surveillance and spying devices such as hidden cameras, transmitting bugs and covert video or data transmissions.Very high sensitivity with the ability to detect signals from wireless devices, cellular phones and covert “bugs” at more than 50+ feet, transmissions from “sealed” microwave ovens at 40+ feet, from walkie-talkies at 100+ feet, and from amateur radio transceivers at hundreds of feet. Detection and differentiation between analog RF signals and digital transmissions. Enhances the detection of cell phones, wireless phones and computer wireless signals. Wide dynamic range display in the LOG (logarithmic) mode covering a 1000 to 1 input signal range, as well as a highly sensitive LINEAR mode where only the weak signals are examined. A MID mode is used for detection and measurement of intermediately strong RF signals. Input signal strengths in the LOG mode, MID mode, and LINEAR mode are adjustable by using a sensitivity controller. 6) RF field strengths displayed on both an analog meter and colored Light-Emitting Diode (LED) displays. The LED display produces better readability from a distance and in dim light such as nighttime. A silent vibrator mode allowing the instrument to be used to detect radiated RF signals (as from a hidden camera or body “bugs”) without being observed. The silent vibrator mode is independently switched ON or OFF. Fixed internal antennas which do not require any adjustments and give repeatable signal
GETTING TO KNOW THE ZC 185 1. METER DISPLAY
A. INITIAL SETTINGS Initial conditions of the ZC 185 should be with the LOG-LINEAR switch in the LINEAR mode, the Vibrator switch turned OFF, and the Analog-Digital switch in the Digital position. Turn on the ZC 185 by rotating the OFF-SENSITIVITY control to the right. B. SETTING THE BASELINE, AMBIENT SIGNAL LEVEL Initially switch to the LINEAR mode
for long distance detection of weak RF signals. C. USING THE DIFFERENT AMPLIFICATION MODES A detected weak signals will present
as an increase above the ambient signal level reading
in the LINEAR mode. The far-away weakest signals are
detected here. D. LOCALIZATION Generally, to determine the location of a transmitting device, move in the direction which increases the signal strength on the ZC 185. As the signal strength increases and the meter reading becomes maximized, switch from LINEAR to MID mode and finally to LOG mode to get to a readable part of the meter scale. The highest reading in the LOG mode is just adjacent to the signal source. E. SILENT VIBRATOR MODE The silent vibrator is used when it is difficult to view the displays or when it is desirable not to be noticed when monitoring the RF signal strength. Once a threshold level is exceeded the vibrator turns on and operates in a pulsating manner. The strength of the vibrations increases with an increase in RF field strength, making it easier to locate the signal source without viewing the display. F. ANALOG – DIGITAL MODES A continuously broadcasting signal can be measured in either the Analog or Digital modes. When the signal is digital (i.e., it is pulsed on and off at a rapid rate), it gives a relatively low reading in the Analog mode, but measures accurately higher in the Digital mode. This is due to the pulsing of the RF signal. If the signal is rapidly pulsed on and off, the meter display will register an average signal reading of the on and off pulse times in the Analog mode. In Digital mode the pulses are detected as peak-signals which register a higher reading than the average of on and off pulses measured in the Analog mode. SPECIFICATIONS
Weight Less than 5.0 oz.
(150 gm) with batteries installed
|
||
©2005 Alan
Broadband Company | Website by: Polaris Visual 541-999-3091 |
