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Chapter 1 11
General Information
Specifications
General Information
Specifications
Specifications for the 11970 Series Mixers are listed in Table 1-1. These are the performance
standards against which the mixers are tested (performance tests are provided in
Chapter
3 ,“Performance Tests,”
). Typical or nominal operating values are listed in Table 1-2.
NOTE Supplemental characteristics are included only as additional information;
they are not specifications.
Equipment Supplied
Waveguide Connector Screws
Five hex-head screws are supplied with each mixer. Four are required to make the mixer-to-waveguide
connection, one is a spare. Use ONLY the screws supplied to attach the mixer to the waveguide. Because
of slight differences in the way the mixers couple with the waveguide, the square-flange mixers (11970K
and 11970A) and the round-flange mixer (1970Q, 11970U, 11970V and 11970W) require different
screws.
If your mixer has a square waveguide flange, use four hex-head screws with Part Number
3030-0221. If it has a round waveguide flange, use four hex-head captive screws with Part
Number 1390-0671. The special balldriver hex screwdriver available in the Option 009
Mixer Connector Kit simplifies installation of the waveguide connector screws.
NOTE See Chapter 4 ,“Service,” for a list of replacement parts.
Environmental Limitations
The 11970 Series Mixers meet or exceed the environmental requirements of MIL-T-28800C, Type III,
Class 3, Style C. Specific environmental qualifications for the mixers are as follows:
Temperature, Non-operating: -40
o
C to 75
o
C
Temperature, Operating: 0
o
C to 55
o
C
Relative Humidity: 95 ±5% (up to 30
o
C)
Altitude, Non-operating: Less than 12,195 meters (40,000 ft.)
Altitude, Operating: Less than 3,048 meters (10,000 ft.)
Maximum Vibration Levels: 2 G’s at 5 to 2000 Hz
Maximum Shock: 30 G’s