General Procedures
Release 3
34-ST-25-20 MC Toolkit User Manual
33
9/06
DE Output Calibration - Trim DAC Current
Trim
Output
Current
Select the
Set Output To 0%
button or the
100%
button.
The message popup at right appears.
Caution:
In Output Mode, output current is fixed at 0% or
100%. Ensure that the loop is in Manual control.
Select the
Yes
button, and at the meter, observe the level
of loop current.
NOTE:
On the voltmeter, 4 mA corresponds to 1 volt.
Using the MC Toolkit, adjust the loop current to the
Zero Percent level (4 mA). If the current is low, tap the
Increment
button; if it is high, tap the
Decrement
button, and observe the change on the meter.
NOTE:
If the error is large, you can accelerate the
adjustment rate by changing the
Step Size to 10 or
to 100
.
When the zero current level (4 mA) is achieved, select
the
Set Output To 100 %
button.
NOTE:
On the voltmeter, 20 mA corresponds to 5 volts.
Use the Increment and/or Decrement buttons to adjust
the output current to 20 mA.
When the 100% current level (20 mA) is achieved,
select the
Clear Output
button. (Note that the button
changes to half intensity.)
Change
display
while in
Output
Mode
If you select the
Back
button before selecting the
Clear
Output
button, the display at right will appear.
If you are sure that you want to remain in Output Mode
while viewing other displays, select the
Yes
button;
otherwise, select the
No
button, and the
Clear Output
button