Specifications
Specifications
Specifications are performance standards or limits against which the detectors are tested.
Table 1 Specifications
Frequency Range: 10 MHz to 18 GHz
Note: RF may leak through the output connector below 1 GHz. It can be reduced, if objectionable, with a suitable low pass filter.
Frequency Response:1, 2, 4
Octave flatness:
±0.2 dB over any octave 10 MHz to 8 GHz Broadband flatness:
±0.3 dB 10 MHz to 12.4 GHz
±0.5 dB 10 MHz to 15 GHz
±0.6 dB 10 MHz to 18 GHz
SWR1,2 (Max):
10 MHz to 4.5 GHz, 1.2
4.5GHz to 7.0 GHz, 1.35
7.0GHz to 12.4 GHz, 1.50
12.4GHz to 18 GHz, 1.70
Maximum Operating Input Power:
200 mW, peak or average
Maximum Short Term Input Power:
1 watt (typical) peak or average for < 1 minute
Sensitivity:1, 3, 4
High level: < 0.35 mW produces 100 mV output
Low level: > 0.5 mVdc/μW CW
Input Impedance: 50 Ω (nominal)
Output Impedance:2 1 to 2 k Ω (typically 1.3 k Ω) shunted by 40 to 60 pF (typically 50 pF).
Output Polarity: Negative (refer to Options for positive polarity units).
Detector Element: Supplied (refer to Table 2 for replacement elements)
Bias: Not required
Noise: < 50 μVpp with CW applied to produce 100 mV output, 400 kHz bandwidth.
Options:
Option 001:
Matched detector pair. Frequency response characteristics (exclusive of basic sensitivity) track within ±0.2 dB from 10 MHz to 12.4 GHz, ±0.3 dB from 12.4 GHz to 18 GHz.
Option 002:
Furnished with matched load resistor for optimum square law characteristics of 25 °C, within ±0.5 dB from square law over a range of at least 30 dB up to 10 mV peak output, working into an external load > 8 k Ω. Sensitivity typically is greater than
0.1 mV/μW when load resistor is used.
Option 003:
Positive polarity output
Option 100:
Female
Environmental:
Operating temperature: −20 to +85 °C
Humidity: < 95% relative
Vibration: 20 G from 80 to 2000 Hz
Shock: 100 G for 11 ms
Altitude: < 4570 meters (15,000 feet)
General:
Weight: Net 57 g (2 oz.)
Dimensions: 64 mm long, 14 mm diameter (2.50 in. long, 0.56 in. diameter)
1.Specifications given for +25° C unless otherwise noted
2.Measurement made at −20 dBm
3.Sensitivity decreases with increasing temperature, typically:
0.5dB from −20 to +25 °C;
0.5dB from +25 to +40 °C; 1 dB from +40 to +55 °C;
1.25dB from +55 to +75 °C; 1 dB from +75 to +85 °C.
4.External load resistance > 50 k Ω
8472B Operating and Service Manual 3
