Post by thread:[EE]:Oscilloscope GW Instek GDS-820C experience

Hi, I bought this GW Instek GDS-820C digital oscilloscope. To my surprise it was extremely difficult to use in daylight. The screen raster was next to impossible to see at 100% contrast. I subdued afternoon light it was OK but even when the room was rather dark, the display "disappeared" at around 40% contrast. Has any one any experience in this? In the light level I refer to there was for example no problem to distinguish the old TDS 220 b/w, the laptop screen (color) or the mobile phone (color ). I returned the GDS-820C to the supplier and ordered another brand instead, but I sort of liked some of the features it has. Relatively long memory a.o. Regards, PerL

I have a GDS-806S (monochrome) and I can see it fine. Wouldn't it be a problem with that specific unit? I have a 17" LCD computer monitor that I can see perfectly, a color LCD of the cell phone, that also can be seen under the current light circumstances. The LCD contrast is... It does not have an indicator, but I can't generate a contrast situation in wich I don't see the screen. Bye! Mauricio Jancic Janso Desarrollos http://www.janso.com.ar spam_OUTinfoTakeThisOuTjanso.com.ar (54) 11-4542-3519 > {Original Message removed}

You know, you make me wonder... I just took my scope out of the office and checked that I can see the screen perfectly, even under direct sunlight. It cant be seen, only when the sun is reflecting on the screen :) I think that your scope screen was the problem, check another one. Regards, Mauricio Jancic Janso Desarrollos http://www.janso.com.ar .....infoKILLspam@spam@janso.com.ar (54) 11-4542-3519 > {Original Message removed}

What scope are you getting now? John --- Per Linne <per.linneKILLspamswipnet.se> wrote: {Quote hidden}> Hi, > > I bought this GW Instek GDS-820C digital > oscilloscope. > To my surprise it was extremely difficult to use in > daylight. > The screen raster was next to impossible to see at > 100% > contrast. I subdued afternoon light it was OK but > even > when the room was rather dark, the display > "disappeared" > at around 40% contrast. Has any one any experience > in > this? > > In the light level I refer to there was for example > no problem > to distinguish the old TDS 220 b/w, the laptop > screen (color) > or the mobile phone (color ). I returned the > GDS-820C to > the supplier and ordered another brand instead, but > I sort of > liked some of the features it has. Relatively long > memory a.o. > > Regards, > PerL > > > > > --

The new Tektronix TDS2022B, which unfortunately costs 50% more and has 50 times less memory. 2.5 K as opposed to 125 K. PerL ----- Original Message ----- From: "John Chung" <.....kravnusKILLspam.....yahoo.com> To: "Microcontroller discussion list - Public." <EraseMEpiclistspam_OUTTakeThisOuTmit.edu> Sent: Wednesday, November 01, 2006 7:06 PM Subject: Re: [EE]:Oscilloscope GW Instek GDS-820C experience > What scope are you getting now? > > John >

And less features, right? Why don't you give the INSTEK a new try, really, I have mine for two years now. Mauricio Jancic Janso Desarrollos http://www.janso.com.ar infospam_OUTjanso.com.ar (54) 11-4542-3519 > {Original Message removed}

The memory part can be fixed using a PC. The TDSxxxB has USB which allows the scope to display the signal to the PC. I believe there is logging capability in the software itself. John --- Mauricio Jancic <@spam@infoKILLspamjanso.com.ar> wrote: {Quote hidden}> And less features, right? Why don't you give the > INSTEK a new try, really, I > have mine for two years now. > > Mauricio Jancic > Janso Desarrollos > http://www.janso.com.ar > KILLspaminfoKILLspamjanso.com.ar > (54) 11-4542-3519 > > > > {Original Message removed}