9x/9xr with m128 cant set battery voltage

[GoogleCodeExporter]

What steps will reproduce the problem?
1.select opentx firmware for 9x/9xr with  m128
2.open general edit window
3.click setup or calibration try to input you batterys voltage

What is the expected output? What do you see instead?
i expect to be able to input my batterys voltage
but it wont go over 9 volts
setup:cycles from 1 to 9.9 volts three times
calibration:cycles once to 9.9V
sim tx: barely responsive says 1.1v 

What version of the product are you using?v1.51 r2319
On what operating system?win 8 x64
Which firmware have you selected ?firmware for 9x/9xr with  m128

Please provide any additional information below.

Original issue reported on code.google.com by QPFnex...@gmail.com on 3 Nov 2013 at 12:03

[GoogleCodeExporter]

Are you talking of transmitter battery calibration? 
You're not supposed to enter battery voltage, but the correction factor. 
If your battery is at 9.9 but the radio displays 9.5, you enter 0.4.
Best done on the radio as you have live display, press the +/- keys until 
display is correct. 

Original comment by bernet.a...@gmail.com on 3 Nov 2013 at 10:45