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                     FIRMWARE RELEASE NOTICE   
          4000SE/SSE/Si/SSi/RS/DS GPS RECEIVERS Ver. 7.19B      

                         13 July, 2000
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TO: All 4000SE/SSE/Si/SSi/RS/DS System Users, Dealers, and Sales  
Offices 

 
PRODUCTS INVOLVED: 4000SE, 4000SSE, 4000Si, 4000SSi, 4000RS,  
4000DS Gauss-based and Maxwell Technology-based receivers. 


SUBJECT:  
As part of Trimble's on-going support and improvements for GPS  
survey receivers, firmware version 7.19B is now available. 

 
UPDATE FEATURES:

Version 7.19B includes all the fixes listed below:

1. Fixes very rare problem involving the 1 Pulse Per Second output
   port which caused the 1PPS signal to be off by 464 millseconds.
   This only occurred on some units the first time the receiver was
   turned on after a prolonged (multi-week) powered off period.

2. Adds capability to work with 32MByte and 96MByte flash card internal
   memories.  The older 4MB, 5MB, 10MB, 20MB, 40MB and 80MB cards are no
   longer available from their manufacturer.

3. Fixes a rare problem with Continuous logging mode where a receiver
   could forget it was in Continuous logging mode after a power supply
   interruption.

4. Enhanced the reliability of Rfile-style fast downloads during
   continuous surveying.  Under rare conditions the download could cause
   a receiver restart.



COMPATIBILITY: 

Version 7.19B is compatible across both the Gauss and Maxwell 
Technology based 4000SE/SSE/Si/SSi/RS/DS receiver product lines.  

Version 7.19B does not implement Everest Multipath Reduction and 
should not be loaded onto receivers which have a current firmware
version of 7.20 or later.  If your receiver currently uses 
firmware version 7.20 or later, and you wish to maintain the Everest
Multipath Reduction capabilities, you should install version 7.32
instead.   

 
AVAILABILITY: 

Version 7.19B is now available to eligible customers for download
from Trimble's World Wide Web and ftp sites.  The firmware filename 
is 4000V719B.EXE.

 
FILE LOCATIONS: 

o On the WEB ( www.trimble.com ), @ www.trimble.com/support/file.htm
o On the ftp site @ ftp.trimble.com/pub/survey/bin.  
 

TRIMBLE TECHNICAL SUPPORT CENTERS:

For  Technical Questions Or Instructions Please Contact Your 
Nearest Trimble Technical Assistance Support Center: 
 
       Within the USA and Canada         (+) 1-800-767-4822 
                     (+)   408-481-7330
       Europe, Middle East, & Africa     (+)44-1256-760-150 
       Asia Pacific              (+)  64-3-339-1400 
       Japan                             (+) 81-35-476-0880 
 
Internet Email Address          trimble_support@trimble.com 
Trimble Web/FTP Site            www.trimble.com 
  
Please have serial number information available when calling   
for support.   
   
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