Figure 3-22. Antenna Elevation Safety switch and Elevation Readout Items.
tuned to their respective assigned frequency.
c. Patch the orderwire to the assigned channel on
the VF patch panel.
terminals by patching the appropriate up and down
d. Transmit a ring signal to the selected terminal
converters to the operational modem through the IF
by activating the RING switch on the orderwire.
patch panel, according to the operating mode
e. Patch the converter for other terminals to be
assignment. Proceed as follows.
contacted and repeat steps c and d above for the
a. Retune the on-line downconverter to its
remaining terminals according to the operating mode
Section III.OPERATION UNDER UNUSUAL CONDITIONS
Operation Under Failure Conditions.
This section contains instruction and procedures which
(1) When one or more of the mission-
allow the operator to keep the equipment in operation
essential equipment groups or units fails, the terminal
under equipment failure conditions. It also contains
can continue to be operated, at full capability, by
procedures for manual operation of the antenna should
substituting the related standby group or units for the
the antenna control or actuators fail.
failed, on-line equipment.