Forums | USR | aty11 testing | Watch |
Author | Topic |
rich1220 Tl Posts: 4 USA | Posted - 11/19/2002 12:17:41 PM When running this test with hyperterminal or procom plus, what should the levels be min and max? |
charles Tl Posts: 5879 USA | Posted - 11/20/2002 1:11:43 AM Post your ATy11 results. What is the make and model number of the modem.You can try ATI11 also First of all, if the value of 3750 is above 50, you may have poor local phone lines and may want to check into noise. Now, take the level of 3300 and subtract it from the level of 3750. If the value is 25 or higher, you most likely have too many A/D, D/A conversions which indicates that you can not achieve 56k speeds. If the value is betwen 20 and 25, you MAY have too many A/D, D/A conversions and you may not be able to achieve 56k speeds. |
rich1220 Tl Posts: 4 USA | Posted - 11/20/2002 7:24:13 AM When you do the aty11 test it registers I think 22 tones and gives the level of each tone in db's I guess what my question is the levels should be what, lowest and highest. Most of the time on 500hz to 3000 hz I see an average of about -16 to -17 the higher freq"s will be more loss. But from some locations they will be -25 and above. What are the limits before it could cause problems in your connection? Thanks |
rich1220 Tl Posts: 4 USA | Posted - 11/20/2002 7:24:57 AM When you do the aty11 test it registers I think 22 tones and gives the level of each tone in db's I guess what my question is the levels should be what, lowest and highest. Most of the time on 500hz to 3000 hz I see an average of about -16 to -17 the higher freq"s will be more loss. But from some locations they will be -25 and above. What are the limits before it could cause problems in your connection? Thanks |
charles Tl Posts: 5879 USA | Posted - 11/20/2002 10:14:59 AM This should give you an idea what is going on. http://gate.cruzio.com/~jeffl/aty11/aty11.htm |
v.Richard Tl Posts: 6222 USA | Posted - 11/21/2002 9:28:42 AM Thanks Charles for that link - I'm adding it to the Modemsite page on aty11 ( www.modemsite.com/56k/x2-adconversion.asp )...! Aloha! Richard. |
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