[WT-support] OFF Time bar and CW stutter

[Ulf, DL5AXX]

Hi Andy,
 
as USB-serial adapter I'm using FTDI's TTL-232R. It has the converter chip
in the USB-plug and comes 1.8m cable with open ends, where you have the
signals at TTL level and a +5V power. So it's quite easy to build a Winkey
unit...
 
73 Ulf, DL5AXX

  _____  

Von: support-bounces at win-test.com [mailto:support-bounces at win-test.com] Im
Auftrag von Andy Cook G4PIQ
Gesendet: Freitag, 21. Mai 2010 18:50
An: support at win-test.com
Betreff: [WT-support] OFF Time bar and CW stutter


While trying to get WinTest configured on an old laptop I've run across a
problem with stuttering CW (both as sent from the LPT port and in the
sidetone generated by the PC). The computer isn't fast (Toshiba R100 1.1 GHz
Pentium-M, Win XP SP3, 1.2Gb RAM), but itbs not an old dog either. I've done
al the usual stuff of running ccleaner, defrag the disk, checking the disk
cache isn't partitioned etc.

I find that I can get the CW to go normal if I turn off the 'How many
minutes since last QSO' bar in the status window. Importantly I also find
that running that bar raises the CPU utilisation on the computer from around
4% to around 25% which seems an inordinate amount of CPU to just display
that bar.

As a reference, I don't see this problem (or the high CPU from the status
bar) on a P4 1.6 GHz desktop. Win Test version is 4.4.0 in each case.

Are there any extra dependancies on the machine that I'm missing here. I
presume Win-Test doesn't place any requirements on the Java version on the
PC (this machine has had a few different versions of Java for work -
otherwise it's pretty normal). Or maybe I just have to build that WinKey
unit I have in the cupboard... But then I have to sort out another working
USB-serial adapter!

73,

Andy, G4PIQ 

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