Page:Apollo Mission Simulator Instructor Handbook - Volume 1.djvu/71

SM-6T-2-02 APOLLO MISSION SIMULATOR INSTRUCTOR HANDBOOK  1.4 TELEMETRY CONSOLE.

The telemetry console depicted in figure 1-58 contains data word displays for analog, bilevel and GMT digital words. Other parallel digital words are displayed bit-by-bit on the bilevel display. The console contains displays of the actual PCM encoder status; repeater light displays of the SCM C &D and the MIU, which are driven in parallel with identical displays on the IOS; and two time displays. In addition, the T/M console includes provisions to fault individual data words (analog, bilevel, or digital words within the format). A functional description of the control panels on the T/M console is included in the following paragraphs.

1.4.1 MONITOR CONTROL.

The controls and displays on these panels allow the instructor-operator to monitor any of the computer or periphery equipment data inputs to the PCM encoder unit on each of the meters. However, only 20 analog channels can be monitored at any one time. It also allows monitoring of a selected faulted channel. The panels are illustrated in figures 1-59 and 1-60 and the controls are functionally tabulated in tables 1-53 and 1-54.

1.4.2 FAULT CONTROLS.

Fault controls are provided for the introduction of faults into the data lines between the AMS computer and the PCM units. Each fault control panel includes monitor lights and selection controls. A functional description of those controls located on the fault panels is listed in table 1-55. Twenty analog fault controls (figure 1-61) are provided on the panel. Each is capable of introducing the following:


 * 1) Drift at a controlled rate
 * 2) Offset of a preset amount
 * 3) Fixed level substitution to a present level
 * 4) Channel loss.

Sixteen bilevel fault controls are provided on the digital fault control panel (figure 1-62 ). These controls functionally described in table 1-56 are used to introduce bit failure into the parallel word signal lines. In addition, six digital word fault controls are provided to simultaneously fail all bits of the word. 1.4. 3 TIME DISPLAY. Two time displays are provided on the telemetry console. The time displays are repeater displays of the previously described time displays located on the IOS. These displays are illustrated in figure 1-63 and functionally described in table 1-57. 1-41