19. PNEU & ENVIRO BLEED AIR valve switches
RADAR mode selector switch SBY.
LSS mode selector switch SBY.
WX push-button selector switch (display con-
troller) Depress. Observe that EHSI displays
partial compass heading arc.
The radar transmitter is radiating X band
microwave energy when in the test
RADAR mode selector switch TST. Observe
that WX mode annunciator on EHSI remains in
Range switches (radar control panel) De-
press both switches simultaneously. Observe
that WX mode annunciator on EHSI changes
from STBY to TEST, and that magenta, red,
yellow, and green are displayed. A green noise
band will appear at the upper arc range mark-
RADAR mode selector switch SBY, then as
Range switches (radar control panel) 50 NM or
LSS mode selector switch CLR TST.