ULTRA 4 INSTRUCTION MANUAL 
 
164 
P839 mA 1 High Trim 
When entering this parameter, you will see the following options displayed 
on the screen: 
Type in the value seen on the DMM and press enter 
again, and you should see 20mA on your DMM.  
‘Enter if measured mA = 20mA’ appears, if the 
reading is correct press enter to save the change. 
When looking back at the parameter you will only 
see the offset value entered. 
If the remote device you are connected to is not 
calibrated, and not showing the correct low or high 
value (reading), then you can trim it using the trim 
parameters.  
You can either type in the offset directly or use the 
arrow keys to move the output up and down until 
you get the expected result (reading) on the remote 
device that is connected. 
Example: 
Measured: When looking at P839 and the DMM is reading 19.67, you would 
type a value of 19.67 into the parameter and press enter.  The unit will then 
output a reading of 20mA. 
 
   
Important Notice 
For units with firmware version 1.0.6 and below please follow the below 
instructions to trim the mA output: 
If the remote device you are connected to is not calibrated, and not 
showing the correct low or high value (reading), then you can trim it 
using the trim parameters.  
You can either type in the offset directly or use the arrow keys to move 
the output up and down until you get the expected result (reading) on 
the remote device that is connected.