Product Specs
Packet Modem Spec Rev6.doc 38 06/09/00
7.2.1 Operational Temperature / Humidity
The DRA shall operate as specified during exposure to the operational
temperature / humidity envelope shown in Figure 7-3.
7.2.2 Non-Operational Temperature / Humidity
The DRA shall operate as specified after exposure to the operational and non-
operational temperature / humidity envelopes shown in Figure 7-3.
7.2.3 Thermal Radiation.
The temperature profile shown in Figure 7-3 includes temperature rise due to
thermal radiation, solar radiation, and other heat loads. . The module
dissipates heat that is dependent on the mode and the transmit power. The
dissipated heat is the difference of the DC input power and the RF
transmitted power.
0
5
10
20
30
40
50
60
70
80
90
100
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
85
90
PERCENT RELATIVE HUMIDITY
D RY
B
U
LB
T EMP ERAT
U
RE
(
de
g
r
ees
C
)
OPERATIONAL AND NON-OPERATIONAL
ENVELOPE
CONSTANT 40C DEW POINT
Figure 7-3 DRA Temperature / Humidity Envelope
7.2.4 Operational Altitude.
The DRA shall operate at standard atmospheric pressure altitudes between 0
and 15,000 meters (50,000 ft).