Adam Equipment CBC 16, Руководство по обслуживанию

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© Adam Equipment Company 2007
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The load cell can be tested while it is connected to the A/D converter circuit board, using
the scale power supply for excitation voltage.
TESTING LOAD CELLS IN THE SCALE
The signal from the load cells is amplified by the circuits on the A/D circuit board. The
signal needs to be amplified to make it acceptable for the A/D converter used. The CBW
scales amplify the input by 200 and change the no load voltage to about +2.5V. The
amplified and offset voltage is measured at pin 6 of IC7, the INA118P amplifier IC. This
voltage is sent to the filter and then to the A/D converter.
6.0 SERVICE PARAMETERS
The service parameters are used for setting the capacity and basic settings.
Switch off the scale and then switch on again. Press [Tare] during the initial self-test.
The display will ask for a code number,
“
P _ _ _ _
“.
Enter the number 2006 and press [Tare].
The display will show the first parameter
“
F1 CAL
”.
To scroll through other parameters
press the [Func] key.
The display will show the parameter number then the word describing the function.
Press the [Tare] key to enter a parameter.
Press the [Zero] key to exit a parameter. Pressing [Zero] again will return the scale to
weighing.
When a parameter is entered by pressing the [Tare] key, the display will guide you
through the parameter selected and the options available.