Test Point
(figure 4-5, sht 2
40
41
42
43
TM 55-4920-401-13&P
Table 4-14. Heater Probe Control Circuit Waveforms.
Waveform*
Remarks
Use internal sync.
Heater probes cooling. Use line
sync. Period determined by line
frequency.
Heater probes heating. Use line
sync. Period determined by line
frequency.
Use line sync. Period
by line frequency.
determined
Use line sync. Period determined
by line frequency.
*
All waveforms are referenced to test point 38. Waveform amplitudes may vary± 10% due to component
tolerances.
4-23
