Tektronix 2221 - Page 25

General
Information --
2221
Operators
Table 1-3
C
Environmental
Characteristics
Characteristics
Performance
Requirements
П
П
П
1
П
Environmental
Requirements
Instrument meets the requirements of Tektronix Standard 062
2853-00
,
Class 5 ,
except
EMI .
The
instrument
meets
the
following
MIL - T
-
28800C
requirements
for Type Ill , Class 5 equipment , except where noted .
Temperature
Operating
Nonoperating
° C to +
50 ° C ( + 32
° F to +
122 ° F ) .
-55 ° C
to + 75 ° C
( -67 ° F
to + 167 °
F ) .
Tested
to
MIL - T -
28800C
, para
4.5.5.1.3
and
4.5.5.1.4
,
except that
in para 4.5.5.1.3 steps 4 and 5 are performed before step 2
( -55 ° C nonoperating test ) . Equipment shall remain off upon
return to room ambient temperature during step 6. Excessive con
densation shall be
removed
before
operating
during
step
7 .
Altitude
П
Operating
To 4,500
meters
(
15,000
feet ) .
Maximum
operating
temperature
decreases 1 ° C per 1,000 feet above 5,000 feet .
Nonoperating To
15,000
meters
(
50,000 feet ) .
Humidity
Operating and Nonoperating
C
EMI (
electromagnetic
interference )
5 cycles ( 120 hours ) referenced to MIL - T - 28800C para 4.5.5.1.2.2
for Type III ,
Class 5
instruments
.
Operating
and
nonoperating at
95 % , -5 % to + % relative humidity . Operating , + 30 ° C to
+
50 ° C ;
nonoperating , + 30 ° C to
+ 60 ° C .
Meets
radiated
and
conducted
emission
requirements per VDE
0871
,
Class
B.
To meet EMI regulations and specifications , use the specified
shielded cable and
metal
connector
housing with the
housing
grounded to the cable shield on the AUXILIARY CONNECTOR .
Vibration
Operating
15 minutes along each of three major axes at a total displacement
of 0.015 inch p - p ( 2.4 g at 55 Hz ) with frequency varied from
10 Hz to 55
Hz to 10
Hz in one -
minute sweeps . Hold for
10
minutes at 55 Hz
in each
of the
three major
axes
.
All
major
reso
nances
must be
above 55
Hz .
Shock
Operating and Nonoperating
30 g , half - sine , 11 ms duration , three shocks per axis each direc
tion , for a total of 18 shocks .
n
n
n
A
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