User's Manual
Table Of Contents
- IMPORTANT NOTICES
 - RELEASE NOTES
 - INTRODUCTION
 - USING MOBILE COMPUTER
 - LEARNING SOFTWARE ARCHITECTURE
 - SYSTEM MENU
 - PROGRAM MANAGER & KERNEL
 - SPECIFICATIONS
 - DOWNLOAD UTILITY
 - TROUBLESHOOTING
- CANNOT TURN ON WHEN PRESSING POWER KEY
 - CHARGING ERROR
 - BUZZER SEEMS NOT WORKING
 - LED INDICATOR SEEMS NOT WORKING
 - LCD TOUCH SCREEN SEEMS NOT WORKING
 - KEYPAD SEEMS NOT WORKING
 - VIBRATOR SEEMS NOT WORKING
 - MOBILE COMPUTER SEEMS NOT WORKING
 - CANNOT SCAN BARCODES
 - CANNOT DECODE DATA AFTER SCANNING
 - CANNOT TRANSMIT/RECEIVE DATA
 
 - KEY REFERENCE TABLES
 
30 
8700 Series Mobile Computer Reference Manual
1.7 CHARGING & COMMUNICATIONS 
Normally the mobile  computer ships with a  USB cable for charging  and communi cations. 
A variety of cradles are also developed and made available to you to meet your needs. 
USB Interface Cable 
Task  USB Cable 
Charging  USB direct charging 
  500 mA: USB icon 
  0 mA: Disable charging for 8700 
5 V charging from the adapter (Plug icon) 
Communications  USB Virtual COM — If  you have FORG E Application Generator instal led on 
your PC, you  may use a download ut ility to receive data from your PC; or 
you can run HyperTerminal.exe to receive data directly. 
USB HID — Run a text editor on your PC to receive data directly. 
USB Virtual COM_CDC —If you have FORGE Application Generator installed 
on your PC, you may use a download utility to receive data fro m your PC; 
or you can run HyperTerminal.exe to receive data directly. 
Note:  (1) If you are u sing USB Virt ual COM for the first time, you must install its driver 
from t he CD -ROM. Driver v ersion 5. 3 or lat er is requ ired. P lease remov e old er 
versions! The virtual COM port will not be assigned until the USB port is in use. 
(2) If y ou are u sing USB Virt ual C OM_CDC for t he first t ime, y ou mu st in stall it s 
driver from the CD-ROM. USB CDC  driver installer can be f ound in the “Windows” 
folder. It will proceed to install the driver to your PC. 
(3) A standard USB cabl e releases a COM por t in the fol lowing conditions: (i) the 
cable is det ached from t he mobil e compu ter direct ly, (ii)  t he cable is det ached 
from t he cradle direct ly, (iii) t he cable is at tached t o t he cradle,  bu t the mobi le 
computer is removed from the cradle, (iv) the mobile computer is powered off, (v) 
no application that requires a virtual COM port is running on the mobile computer. 
(4) For an  application program that requir es a COM  port to be oc cupied all t he 
time, it is suggested that you use a 308 USB Virtual COM Interface cable instead. 










