“NXT” to continue.
If MODE 1 is selected, a sequence of IDDX channel tuning screens will follow. If available, use the USB
oscilloscope to facilitate IDD tuning. An oscilloscope with FFT is more effective in determining the lower
and upper corner frequencies; pick-up and dropout points; and analog output low and high points.
of gain is realized, then gain setting should be increased.
signal level or tested during self-check
Gain setting should be as low as possible, typically 0, to ensure safety. As boiler load increases
raw signal strength will increase. If this signal strength is too high, then gain will need to be reduced.
signal strength near saturation.
time-out will occur. At a time-out, the tuning loop is exited and the system returns to active operation,
any unsaved changes that were entered will be lost.
has returned to normal operation.
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372001-24 Rev. B