Section III. FFCS AND RIT CREW STATION/RADIO SWITCH SETTING PROCEDURES

TM11-5830-263-20&P

SECTION III

FFCS AND RIT CREW STATION/RADIO SWITCH SETTING PROCEDURES

2.6.

FFCS CREW STATION ADDRESS SWITCH SETTING PROCEDURES (FIG. 2-37.)

Perform the following procedure to change the FFCS Crew Station Address switch setting located on the

bottom of the FFCS.

a. Rotate switch cover screw counterclockwise and remove.

b. Using a jeweler's screwdriver, rotate the adjustment screw counterclockwise, until stop is

reached. This is the setting for Crew Station #1.

Each click of the switch in a clockwise direction changes the address by one position. For

example, with the switch in the full ccw position (Crew Station #1), turning the switch two clicks in

a clockwise direction will set the FFCS to Crew Station #3.

d. The address switch has 8 positions. Crew Station settings are numbered 1 through 6. Position 7

on the switch is the same as position 6. Position 8 on the switch is normally used for testing,

however, if the MCS is not functioning correctly, e.g., loss of timing signal (sync pulse), but is

supplying power to the rest of the system, setting the switch to position 8 will result in the FFCS

putting out a timing signal like the MCS.

e. When the correct Crew Station address has been set replace switch cover screw and hand

tighten.

Rotation

IDENTIFICATION SWITCH

Switch numbers are shown for

information only, the switch is

not marked.

COVER

(ID Switch under cover)

Figure 2-37. FFCS Crew Station Address Switch