7-3
IM 2560A-01EN
Output Division, Deviation, and Sweeping
3
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
App
Index
• If the output value exceeds the source range as a result of deviation, the deviation display blinks. If
you change the deviation in this condition, the deviation is set to the maximum or minimum value
that would make the output value fall within the source range, and the deviation display changes
from blinking to solid.
Example
Use the deviation dials to read the deviation of the meter to be calibrated (the error between a scale
value and needle). Use the main setting and the output divider feature to output the meter scale
values (nominal values), and use deviation dials 1 and 2 to align the meter needle to the scale
values.
If you turn a dial to the right and set a negative deviation value, the 2560A outputs a value that is
larger than the original output value by the main setting value × deviation. A negative deviation
means that the meter needle is indicating a value less than the 2560A output.
If the main setting (MAX) is set to +100.000 V, the main setting (MIN) is set to +0.000 V, and the
divider value is 5/10, setting deviation to –1% will result in the following.
Deviation = +100.000×0.01 = +1.000 V
If the divider value is 5/10, the result will be +50.000 V + deviation (+1.000 V), and +51.000 V will
be output.
When the output is turned on, the output display shows the output value of the voltage, current,
resistance, or temperature, and the voltage, current, resistance, or temperature is output from the
applicable output terminals. For details on how to turn the output on and off and how to set the range,
see chapter 5 or 6.
Preset
Select the preset from the following.
• 5%: The deviation is set to +5% when the numerator n of the output divider feature increases and
–5% when it decreases.
• 2%: The deviation is set to +2% when the numerator n of the output divider feature increases and
–2% when it decreases.
• 0: The deviation is set to 0% when the numerator n of the output divider feature changes.
• OFF: Preset is not set.
When you change the numerator n of the output divider feature, the deviation is set to a value based
on the change in n and the preset.
When calibrating a meter, change numerator n of the output divider feature to move the calibration
point. A preset is used to take the meter error or overshoot into consideration so that when you move
the calibration point, the calibration point is not exceeded.
The sign of the deviation preset is positive when calibrating in increasing order (calibrating from the
smallest value) and negative when calibrating in decreasing order (calibrating from the largest value).
• If the preset is set to 0%, 2%, or 5% (a setting other than OFF) and you change the main setting or
the denominator m of the output divider, the deviation will be cleared. If you change numerator n of
the output divider, the deviation returns to the selected preset.
• If the deviation is set using the deviation dials when preset set to OFF, the deviation will not change
even if you change the main setting or the denominator m or numerator n of the output divider.
• Flipping the PRESET switch down from the OFF position sets the deviation to 0%.
• You cannot change the preset while a sweep is in progress.
<<Command Mnemonic>>
:DEViation:PRESet
{<
Percentage
>|OFF}
:DEViation:VALue {<
Percentage
>|MINimum|MAXimum}
7.2 Deviation Output
