4-9
1010PVNFM-3A
Section 4
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4.5.1 THE ANALOG OUTPUT TRIM MENU
Analog Output Trim allows you to fine-tune the meter’s analog voltage and current outputs
using a multimeter connected to the output under test. In addition, you can use a frequency
counter to fine-tune the meter’s pulse rate output.
NOTE: The current, voltage, and Pgen trimming will be limited by the 12-bit resolu-
tion of the meter’s D/A Convertor (DAC).
To access the Analog Output Trim menu press
4.5.2 CURRENT OUTPUT TRIM (Io1 & Io2)
(Note: Can be trimmed to within .005 mA of nominal.)
To calibrate a current output (Io1 or Io2):
Set up the multimeter to read Amps, then connect it to the supply and return term-
inals of the current output under test.
Move the highlight to the port to be tested, press , then press to move the
cursor to [Trim @ 4mA].
Press . This triggers a 4.00 mA pop-up window. The multimeter should now be
reading 4.00 mA.
If the multimeter reading does not match, use the numeric keys to type in the multi-
meter reading.
Press to register setting. This adjusts the meter’s DAC (digital-to-analog con-
verter) so that a 4mA output corresponds with 4mA on the multimeter.
Re-check the multimeter to make sure that it is now reading 4mA.
4.5.3 VOLTAGE OUTPUT TRIM (Vo1 & Vo2)
(Note: Can be trimmed to within .0025 V of nominal.)
To calibrate a voltage output (Vo1 or Vo2):
Set up the multimeter to read volts, then connect it to the supply and return termin-
als of the voltage output under test.
Move the highlight to the port to be tested , press , then press to
move the cursor to [Trim @ 2V].
Press . This triggers a 2.00 Volts pop-up window. The multimeter should now be
reading 2.00 Volts.
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ANALOG OUTPUT TRIM MENU STRUCTURE
Analog Output Trim
Io1 (Io2)
Operate
Trim @ 4mA
Indicated mA = x.xx
Vo1 (Vo2)
Operate
Trim @ 2V
Indicated V = x.xx
Pgen1(Pgen2)
Operate
Trim @ 1kHz
Indicated Hz = xxxx
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