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Summary of Contents for Berkeley Varitronics Systems Grasshopper
- Page 1 Grasshopper manual version 2.0...
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Page 2: Table Of Contents
PEAK HOLD......................6 PER........................7 PEAK........................7 CONTRAST ADJUSTMENT....................7 BACKLIGHT ADJUSTMENT..................... 8 WEP ENCRYPTION DETECTION..................8 UPDATING GRASSHOPPER FIRMWARE................8 NETWORKING BASICS....................9 DSSS INTERNATIONAL CHANNEL CHART................10 GLOSSARY OF ACRONYMS.................... 11 GENERAL SAFETY....................... 12 ANTENNA RADIATION PATTERNS GRASSHOPPER DATA SHEET... - Page 3 Grasshopper uses common AA battery cells found in any conveinence store. Ni-Cad, Alkalines, Ni-MH and Li-Ion cells may all be used. Grasshopper does require 5 AA cells with at least 1500 mAh per cell. BVS supplies 2 battery packs complete with 10 Ni-MH battery cells to get users working right out of the box.
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Page 4: Grasshopper Accessories
Ni-MH battery packs. Expect over 500 cycles from each Ni-MH pack. GRASSHOPPER KEYPAD Grasshopper uses a raised plastic keypad as its only inter- face. Below are simple descriptions of the buttons and their features. POWER - indicates if unit is On or OFF... -
Page 5: Main Screen
MAIN SCREEN This is the main measurement screen used for monitoring and selecting APs or Access Points. The window to the upper right displays the received signal multipath in realtime of the cur- rently selected AP. Any AP listed under the AP Address window is recognized as an IEEE 802.11b address. -
Page 6: Select Ap
SELECT AP This selection places a cursor at the bottom of the screen to the left of the AP addresses. By pushing ENT, the user selects (indicated by an asterisk) a specific AP address to monitor. Use Select AP to toggle through all received addresses. This selection will change from Select AP to Select STA if the user chooses to view all STA’s. -
Page 7: Spectrum Screen
RSSI SCREENS The following screens illustrate various forms of interference that Grasshopper’s Spectrum screen displays. The first screen is a wideband 5 MHz jammer. Notice that the Peak Hold is Off in the upper right corner. PEAK HOLD... -
Page 8: Per
This selection will display the Packet Error Rate screen for the currently selected AP. The Rate column to the left indicates the speed rate that is being used in Megabits per second. The PER is based on actual packets coming in at different data rates. -
Page 9: Backlight Adjustment
Please make note of the install directory. You will need this information later. 2. Connect the download cable to the Grasshopper and to the PC. Turn the unit on and press the Setup key. This places the unit in the channel selection screen. -
Page 10: Networking Basics
Networking Basics Packets and traffic Information travels across a network in chunks called “packets.” Each packet has a header that tells where the packet is from and where it’s going, similar to what you write on the envelope when you send a letter. The flow of all these packets on the network is called “traffic.”... -
Page 11: Dsss International Channel Chart
TCP/IP (Transport Control Protocol/Internet Protocol) TCP/IP is a collection of protocols that underlies almost every form of communication on the Internet. DHCP (Dynamic Host Control Protocol) DHCP is a method of automatically assigning IP addresses. Instead of assigning addresses to individual users, addresses are assigned by the DHCP server when clients need them. -
Page 12: Glossary Of Acronyms
Glossary of Acronyms Alternating Current Analog to Digital converter Automatic Gain Control Access Point Applet a small Application Bit Error Rate BPSK Binary Phase Shift Keying Basic Service Set Band Width CDMA Code Division Multiple Access (spread spectrum modulation) Direct Current Digital to Analog decibel decibels referenced to 1 milliwatt... -
Page 13: General Safety
IMPORTANT SAFETY INSTRUCTIONS When using your telephone equipment, basic safety precautions should always be followed to reduce the risk of fire, electric shock and injury to persons, including the following: 1)Read and understand all instructions. 2)Follow all warnings and instructions marked on the product. 3)Unplug this product from the wall outlet before cleaning. - Page 14 2. Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. 3. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network inter- face. 4. Use caution when installing or modifying telephone lines. INSTRUCTION FOR BATTERIES CAUTION: To Reduce the Risk of Fire or Injury to Persons, Read and Follow these Instructions: Use only the type and size of batteries mentioned in owner’s manual.
- Page 15 Below are Radiation Patterns for the included N2400SMA1G Antenna (left) and BVS’ optional DF corner reflector (right). The Antenna Under Test was measured against a 1/2 Wave Dipole, therefore; The Gain is measured in dBd (0 dBd = 2.14 dBi).
- Page 16 RSSI signal levels aiding in locating the hub and access points throughout a building. Grasshopper™ detects and differentiates from narrow- band multipath interferences such as microwave ovens and frequency hopping systems and fea- tures a built-in display, keypad and removable battery pack for true portability.
- Page 17 - ing case. Berkeley Varitronics Systems, Liberty Corporate Park, 255 Liberty Street, Metuchen, NJ 08840 Phone 732-548-3737 • Fax 732-548-3404 • Internet: www.bvsystems.com • E-mail: info@bvsystems.com...
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