Agilent 423B and 8470B Detectors 3
Installation
Specifications
Frequency Range:Options:
423B: 10 MHz to 12.4 GHz
8470B: 10 MHz to 18 GHz
Note:RFmayleakthroughthe outputconnectorbelow1GHz. Itcan
be reduced, if objectionable, with a suitable low pass filter.
423B and 8470B:
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
423B:
Option 001: Matched detector pair. Frequency response
characteristics (exclusiveof basic sensitivity) track within
±0.2 dB from 10 MHz to 12.4 GHz at −30 dBm.
8470B:
Option 001: Matched detector pair. Frequency response
characteristics (exclusiveof basic sensitivity) track within
±0.2 dB from 10 MHz to 12.5 GHz;
±0.3 dB from 12.4 GHz to 18 GHz at −30 dBm.
Option 012: Furnished with stainless steel type-N male connector.
Frequency Response:4, 5
423B and 8470B:
Octave flatness:
±0.2 dB over any octave 10 MHz to 8 GHz
Broadband flatness:
±0.3 dB 10 MHz to 12.4 GHz
8470B only:
Broadband flatness:
±0.5 dB 10 MHz to 15 GHz
±0.6 dB 10 MHz to 18 GHz
SWR1,2 (Max):
423B and 8470B:
10 MHz to 4 GHz, 1.15
4 GHz to 12.4 GHz, 1.3
8470B only:
12.4 GHz to 15 GHz, 1.3
15.0 GHz to 18 GHz, 1.7
Environmental:
423B:
Operating temperature: 0 C to +55 °C
Humidity: < 95% relative
Vibration: 20 G from 80 to 2000 Hz
Shock: 100 G for 11 ms
Altitude: < 4570 meters (15,000 feet)
8470B:
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
Sensitivity:1, 3, 5
High level: < 0.35 mW produces 100 mV output
Low level: > 0.5 mVdc/µW CW
Input Impedance: 50 Ω(nominal)
Output Impedance: 1 to 2 k Ω(typically 1.3 k Ω) shunted by
35 to 65 pF (typically 50 pF).
Output Polarity: Negative (refer to options for positive polarity units)
Detector Element: Supplied (refer to “Replacement Parts Table” on
page 12 for replacement elements)
Bias: Not required
Noise: < 50 µVpp with CW applied to produce 100 mV output
General:
Weight:
423B and 8470B: Net 114 g (4 oz.)
Dimensions:
423B: 63 mm long, 20 mm diameter (2.47 in. long,
0.78 in. diameter)
8470B: 64 mm long, 19mm diameter (2.50 in. long,
0.75 in.diameter)
1. Specifications given for +25 °C unless otherwise noted.
2. Measurement made at −20 dBm.
3. Sensitivity decreases with increasing temperature, typically: 0.5 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. Measured at −30 dBm. Flatness is the peak-to-valley range of the response.
5. External load resistance > 50 k Ω
