Overview; General Features; Keypad - Berkeley Varitronics Systems Fox Manual

INTRODUCTION

Overview

FOX is a hand-held, battery powered signal strength meter convenient for finding RF "shadows" in indoor wireless systems
or for drive-around studies to detect RF leakage and propagation coverage.
cigarette lighter, or to run for up to 8 hours on its internal, rechargeable NiCad (Nickel Cadmium) battery.

General Features

FOX
• has a 240 x 64 graphic Liquid Crystal Display (LCD) with electroluminescent back lighting and can display up to
160 channels (frequencies) at one time. The unit can resolve signal levels to 1 dB accuracy in real-time and display dBm in
either bar graph or scrolling X axis with a 1 second tick mark format. The sampling rate for Receive Signal Strength Indication
(RSSI) is user-programmable. Display contrast may be adjusted via the up and down arrow keys while in the greeting screen.
Each of these settings are then stored in non-volatile memory. The keypad is used for menu selection and includes full numeric
entry for which channels to scan, along with other user programmable functions.
• The keypad has 20 alpha-numeric keys for user entry.
• RS-232 serial interface is supported for use with Seiko DPU-411 thermal printer.
• Auto calibration feature utilizes a unique on-board program to calibrate the
(using either Marconi 2957/2960 or HP 8920 communication test sets). The calibration values are automati
cally stored in nonvolatile EEROM.
• The audio (speaker) volume is adjustable using the up and down arrow keys while in the CHAN screen.
• A built-in real-time clock (RTC) is used in connection with the MARKER feature to log time stamp vs. positional
information with the collected data.
• An internal NiCad battery is employed for up to 8 hours of operation before recharging is necessary.
• Battery backup storage static random access memory (SRAM) is available for permanently saving screen
setups and favorite channel numbers, as well as collected measurements.
• Fast battery charger
• Internal differential GPS 8 channel receiver uses an active antenna, which can magnetically attach to the roof of a
vehicle
Options
• PCMCIA mass non-volatile storage RAM cards (128k - 2 MBytes are supported)
• BER demodulation: bit, byte, packet and burst error counts (where applicable)
• Printer: Seiko, Inc. DPU-411 Type 11 with cable

Keypad

Certain keys take on different meaning depending on the current operation mode. During MAIN MENU mode, the arrow keys are
used to select menu options (measurements). During the RF MEASUREMENT MODE the arrow keys are used to increment/ dec-
rement a channel number; or to change the frequency up or down (channel number), use the cursor left and right arrow keys.
FOX is designed to be powered from either AC, a
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FOX without operator assistance