USM REL 1.5 August 30, 1999 BUG FIXES: Bolts that have an unloaded length measured but no elongation do not report with dashes, rather they print with a value of zero, unless the temperature is changed between the two readings in which a small value will be displayed. FUNCTIONAL CHANGES: NONE COSMETIC CHANGES: NONE ======================================================================= ======================================================================= USM REL 1.4 August 1, 1999 BUG FIXES: Lock up problem in Reference Length mode - This bug appears to have been introduced in version 1.3 along with the backup restore feature. Caused by a timer interupt occuring at just the wrong place in the set gain routine. The lock up could occur any time the gain was being changed, however, the probability was extremely low, therefore the only time it would occur was when the unit was left in a mode where the AGC was constantly changing the gain. ATMEL Flash memory problem - after a read or write to the flash memory used for data storage, the program waits for the status register of the flash part to drop the busy flag. Previous versions looked for a specific value of the status register, rather than just check the busy flag bit. In some parts the status register bit 2 was set, causing the status register to return a differnt value, therefore the busy flag was never seen as being ready. This caused the system to hang when trying to read or write to flash. Not a problem for the user, but caused production problem rejecting Atmel parts that returned a different value in the status register. FUNCTIONAL CHANGES: Number of decimals for the Load Factor and the Load Offset have been changed. In Pounds/Inches and Kilograms/MM the number of decimals is zero (whole number). In Kilonewtons/MM the number of decimals is three. A major rewrite of the entry field code occured at this version. The previous versions used a table to decide how many digits and decimals places to display a value that was to be edited. The new version uses a table of functions, the same functions that are used when displaying the value of thefunction in the menus. This should provide more consistant display and editing of values. COSMETIC CHANGES: In the analog out menu, the full scale elongation or load is now displayed under the soft key labels "SCALE ELONGATION" and "SCALE LOAD". Note that this value is displayed as a blank if it is zero. ======================================================================= ======================================================================= USM REL 1.3 April 23, 1999 BUG FIXES: ANALOG OUT - analog output was broken in the revision 1.2. The current version works, but does not do temperature compensation. MEASURE - the noise measurement looks for noise before the first peak over threshold - this used to stop 1/4 cycle before peak - changed to 1/2 cycle before peak FUNCTIONAL CHANGES: BACKUP / RESTORE - the SEND key now accesses a TRANSFER menu. The transfer menu allows saving a group to a PC or a second USM. The transfer is accomplished flash memory page by flash memory page. Each page is numbered and has a checksum. Incomplete transfers are deleted from the memory. There are two reasons a transfer will fail: (1) It is not allowed to overwrite an existing group and (2) there must be sufficient free memory to contain the entire new group. In order to BACKUP and RESTORE to a computer special software is required. A Java based program for use with Win95/98/NT systems is available at www.norbar-usa.com/utils. In order to backup from one USM to another, a special cable is required. This cable is a DB9M to DB9M wired as a null modem - only three wires are required and the connections are as follows: 2 <-> 3 3 <-> 2 5 <-> 5 REPORT FORMAT CHANGE - The load section of the report is now omitted if the load factor is set to zero. COSMETIC CHANGES: A message is now displayed when the PULSE/ECHO softkey is pressed. The message is: PULSE ECHO MODE USES TRANSDUCER JACK 2!!! PRESS ENTER KEY ======================================================================= ======================================================================= USM REL 1.2 March 9, 1999 BUG FIXES: 1 MHZ transducer problem - when pulser was set to 1 MHZ the mean value was not calculated properly causing display to be offset. FUNCTIONAL CHANGES: The "flaw" display now has labels showing the thickness of the left and right side. The "flaw" display defaults to + and - 5 per cent of the given Approximate Length given in the Bolt Group. This can now be changed. The 1 and 3 keys pan the location and the 4 and 6 keys change the width. In order to handle large and fast shifts in the bolt length, when the signal is lost it now automatically drops back to rescan the entire acquisition window. COSMETIC CHANGES: NONE. ======================================================================= ======================================================================= USM REL 1.1 Jan 18, 1999 BUG FIXES: When deleting a single bolt, the confirm screen does nothing, the bolt is deleted when ENTER is pressed on the "ENTER BOLT NUMBER TO CLEAR" The maximum gain sometimes "sticks" at 387. This is due to the fact that the maximum gain should be restricted to 385. The preamp switch point is 130 - therefore 130 + 255 = 385 FUNCTIONAL CHANGES: LOAD value is now rounded to 0.00001 inch or 0.0001 MM. Number of Bolts in group is now displayed on MD_GROUP_TEMP page. COSMETIC CHANGES: The order of the YES NO confirm screens has been changed. F3 is now used for YES and F2 for NO - this means hitting the same key twice will not clear out all groups by accident. This applies to MD_NEW_GROUP_1, MD_NEW_GROUP_2, MD_CLR_BOLTS_CONFIRM, MD_CLR_ONE_CONFIRM, MD_CLR_GROUPS_CONFIRM, MD_CLR_GROUP_CONFIRM. The memory warning is misspelled (inteRRupt). NEWTONS is changed to KILONEWTONS in SELECT UNIT SYSTEM menu and KN in load display screen. The message USE MODIFY GROUP has been deleted. ======================================================================= =======================================================================