TM 9-4935-481-14-1
on the vertical offset potentiometer will result in a dc output on the vertical rate/position signal of 5.00 volts, with the polarity
being dependent upon the setting of the +/- switch.
(5) Polarity and scale factors. Because of an image inversion in the tracker optics, a positive vertical error
shifts the dot circle down on the detector, and a positive horizontal error shifts the circle left. Thus, as depicted in fig. 3-7,
with the vertical and horizontal offset switches set to plus, a missile position error of up and to the right would be simulated,
with the dial readings determining the amount of error.
e.
(1)
Program performance evaluator.
(a) The align jacks J2 and J3 are intended for Y use during TTS calibration. J2 provides a digital control
signal for TTS card 1A10. The output of J3 is a precision +5.400 voltage source for the purpose of calibrating the TTS
meter.
(b) The align lamp has a four seconds on, six seconds off cycle when the sequence switch is set to either
the align 1 or align 2 position. This is used as an assist to the operator when aligning the TTS, and is described in the TTS
calibration procedure.
(c) Sequence switch S19 provides control of the various automatic, manual, and calibration tests
performed on the TTS.
1.
In any one of the sixteen automatic positions, seven time-varying signals are simultaneously
applied to the TTS to result in a thorough check of the boresight and missile command modes of operation. Table 3-4
depicts the outputs for each AUTO switch position.
2.
The manual position enables controls associated with each of the six simulators contained in
the TTS section sum and difference, horizontal wire, vertical wire, horizontal and vertical rate pos'it4on, trigger pulse, and
trigger safe. Generally, these controls allow adjustment of the stimuli throughout a range of 20% above the maximum to
20% below the minimum amplitudes used in automatic testing or calibration. The trigger safe manual mode is unique in that
it must be enabled by both the manual position of the sequence switch and the off position of the trigger output switch. When
this is the case, the trigger safe manual voltage of 0 to -500 mVdc is then adjusted by means of the trigger pulse amplitude
(volts) potentiometer.
3.
Align positions 1 through 6 select fixed signal levels that are used
Figure 3-7. Detector simulator parameters, error inputs
3-12