Chapter 3. Making Measurements
USM Go Operator’s Manual 89
3.10 Adjusting DAC or TCG Display and Adding Offsets
After the DAC or TCG curves are displayed, the addition of guidelines offset from the reference line by a fixed or variable dB value
provides enhanced evaluating capabilities. Similarly, the TRANSFER CORR function applies dB compensation for the difference in
coupling conditions between the known standard and the test piece.
3.10.1 Defining DAC or TCG Curve Offsets (DAC/TCG-OFFSETS-MODE)
To add a series of guidelines, offset from the DAC or TCG curve by a definable dB increment (but not exceeding ± 24 dB from the reference
curve):
1. Access the OFFSETS submenu in the DAC/TCG menu.
2. Set the MODE function to FIXED for evenly spaced offset lines or to CUSTOM for user-controlled offset line placement. Set this
function to OFF to remove offset lines from the display.
3. If FIXED offset MODE is selected, set the OFFSET function to the dB increment at which offset lines are drawn above and below the
DAC or TCG line.
4. If CUSTOM offset MODE is selected, access the OFFFSETS2 submenu and input the positive or negative offset at which each of up
to four guidelines are drawn.
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