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1010BXFM-3
Section 4
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 and Pgen trimming will be limited by the 12-bit resolution 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 PC numeric keys or Magnetic Wand 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 PGEN OUTPUT TRIM (Single Channel models only)
(Note: Can be trimmed to within 1.25 Hz of nominal.)
To calibrate a pulse rate output (Pgen1):
Connect a frequency counter to the supply and return terminals of the pulse rate
output under test.
Move the highlight to the port to be tested , press the , then press
to move the cursor to Trim @ 1kHz.
Press . This triggers a 1 kHz pop-up window. The frequency counter should now
be reading 1 kHz.
If the frequency counter reading does not match, use PC numeric keys or Magnetic
Wand to enter the frequency counter reading.
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ANALOG OUTPUT TRIM MENU STRUCTURE
Analog Output Trim
Io1
Operate
Trim @ 4mA
Indicated mA = x.xx
Io2
Operate
Trim @ 4mA
Indicated mA = x.xx
Pgen
Operate (Single Channel only)
Trim @ 1kHz
Indicated Hz = xxxx
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