Set number of highest harmonic
This option sets the number (n) of the highest harmonic included in the distortion calculation,
where “n” is between 2 and 64 (2 is default). For example, the harmonic with a frequency twice
that of the fundamental is the second harmonic (n=2). This function acts as a brick-wall, low-
pass filter. It has an upper limit of 50kHz or 64 times the fundamental frequency, whichever is
lower. This option has no effect in the THD+n or SINAD modes.
1. Press THD-MEAS.
2. Press ENTER until the display shows “UPPR HARM: 02”.
3. Set the number of the highest harmonic using the cursor keys.
4. Press ENTER, then press EXIT.
Use this remote command:
:SENSe:DISTortion:HARMonic xx ;set number of highest harmonic
Set measurement units
For the THD and THD+n modes, the measurement units can be percent or dB. SINAD is
always displayed as dB.
1. Press THD-MEAS.
2. Press ENTER until the display shows “UNITS: PERC”.
3. Select PERC or dB using the cursor keys.
4. Press ENTER, then EXIT.
For remote operation, use this command:
:UNIT:DISTortion PERCent|DB ;select percent or dB for units
Select shaping filter
The Model 2016 has digital shaping filters to simulate having the sample signal pass through
various types of telephone lines. The filter is turned off by default (NONE).
1. Press THD-MEAS.
2. Press ENTER until the display shows “SFIL: NONE”.
3. Select NONE, C (C message weighting), CCITT, CCIRARM, A (A weighting), or CCIR
using the cursor keys.
4. Press ENTER.
For remote operation, use this command:
:SENSe:DISTortion:SFILter NONE|C|CCITT|CCIRARM|A|CCIR ;select shaping filter
Set the voltage range
The Model 2016 defaults to autoranging for the voltage input range. If you prefer manual
ranging, use the lowest possible range for the signal level. Not using the appropriate range
causes inaccurate readings, or the display may show “OVRFLW” or “UDRFLW.”
2-36 Basic Measurements
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