3-54 Section 3: Model 9100 Controls: Working with Front Panel Controls — Tutorials
Final Width = 215mm
3.4.7 Continuous Dynamic Range
3.4.7.1 Six Significant Digits — Restriction of Maximum Output Values
In this sequence, we shall see how the output value is restricted by the present level of absolute resolution with six significant figures
available. We shall start at the point we had reached in the Offset Editing tutorial on page 3-53, then transfer to maximum resolution
of 1µV increments, to discover the span of output values. After the exercise, we shall discuss the results.
Start where we finished the Offset Editing tutorial (p3-53).
Action Result Comment
1. We will concentrate on manipulations of the Output Value, and must first transfer the cursor from the Offset value to the Output
value. Do this by cancelling both Offset and Deviation displays:
Press ∆ then ∆V + 0010.00 V As the Offset display disappears, the cursor moves to the
least-significant digit of the Output Value. This would also
have happened if you had cancelled
∆% first.
Press ∆ then ∆% + 0010.00 V The Deviation display disappears.
2. Use Direct Edit to transfer to the maximum resolution.
Type 100 and Press mV + 100.000 mV This is the maximum resolution possible — 1µV increments.
3. Choose the digit to be changed:
Press
five times + 100.000 mV The cursor moves to the most-significant digit
4. Does the output value pass through zero at this resolution?
Press once 000.000 mV The output value reduces to Zero at maximum resolution
5. Does the output have negative values at this resolution?
Press once - 100.000 mV This negative value can be as large as -320mV
6. Let us look for the largest positive output at maximum resolution:
Press four times + 300.000 mV We are aiming towards +320mV
Press
once + 300.000 mV The cursor must be in the correct place
Press twice + 320.000 mV This is the largest possible value at maximum resolution, but
we can try to increase it by the smallest increment of 1µV:
Press
four times + 320.000 mV The cursor moves to the 1µV 'units' digit:
Press once + 320.000 mV No change in output value, but you should hear a warning
tone, and see an error message (Up range required).
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