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8472B Operating and Service Manual 3
Specifications
Specifications
Specifications are performance standards or limits against which the
detectors are tested.
Table 1 Specifications
Frequency Range: 10 MHz to 18 GHz Options:
Note: RF may leak through the output connector below 1 GHz. It can be
reduced, if objectionable, with a suitable low pass filter.
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 OSSM-type output connector
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
SWR
1,2
(Max):
10 MHz to 4.5 GHz, 1.2
4.5 GHz to 7.0 GHz, 1.35
7.0 GHz to 12.4 GHz, 1.50
12.4 GHz to 18 GHz, 1.70
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)
Maximum Operating Input Power:
200 mW, peak or average
Maximum Short Term Input Power:
1 watt (typical) peak or average for < 1 minute General:
Weight: Net 57 g (2 oz.)
Dimensions: 64 mm long, 14 mm diameter
(2.50 in. long, 0.56 in. diameter)
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)
1. Specifications given for +25° C unless otherwise noted
2. Measurement made at −20 dBm
3. Sensitivity decreases with increasing temperature, typically:
0.5 dB from −20 to +25 °C;
0.5 dB from +25 to +40 °C;
1 dB from +40 to +55 °C;
1.25 dB from +55 to +75 °C;
1 dB from +75 to +85 °C.
4. External load resistance > 50 k Ω
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.