Automatic resetting thermal cutout protects
15 C to +55 C
instrument from overheating.
55 C to +75 C
15,000 feet maximum
Altitude referred to sea level. Operating
temperature capabilities decline 10 C per
1000 feet altitude above sea level.
May be tested during non-operating tem-
Exclude freezing and vibration.
Five cycles (120 hours) of
Tested within an electrically shielded enclo-
150 kHz to 1000 MHz
sure with the CRT mesh filter installed.
Within the limits described in MIL-I-6181D,
150 kHz to 25 MHz
Resonant searches along all 3 axes at 0.025
Instrument secured to vibration platform
during test. Total vibration time, about 55
Guillotine-type shocks. Total of 12 shocks.
One shock of 30 G, one-half sine, 11 milli-
Operating and non-operating
second duration each direction along each
Meets National Safe Transient type of test
Package should just leave vibration surface
when correctly packaged. One hour vibra-
tion slightly in excess of 1 G.
30 inch (18-inches for R491) drop on any
corner, edge or flat surface.