Figure 3-5.--Stabilized platform assembly, functional diagram.

fluid to enter the hydraulic actuator (fig, 3-5), thereby

leveling the platform and thus canceling the error signal.

When this occurs, a READY light is actuated on the

remote control panel. If the system develops a mal-

function and the error signal is not canceled, an error-

sensing circuit will light the NOT READY light on the

remote control panel and turn off the GSI.

In the previous paragraphs, we discussed the normal

mode of operation in the electronics portion of the

system. The stabilization lock feature (stab-lock relay)

tests and aligns the GSI. Referring to figure 3-6, you will

see internal gyro stab-lock and ship gyro stab-lock push

buttons and two test switches, one of which is pitch-

off-roll.

As previously mentioned, the error signal in the

normal mode goes through a stab-lock relay. When the

stab-lock button is pushed, the normal error signal

supplied from the gyro is stopped at this point (see

Figure 3-5.--Stabilized platform assembly, functional diagram.

Figure 3-6.--Compenents panel assembly (P/O electronics enclosure-F100) controls and indicators.

3-4