Datasheet

Page 5
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U8480 Series USB Power Sensors Specifications
Key specifications
Frequency range U8481A Option 100 10 MHz to 18 GHz
U8481A Option 200 DC to 18 GHz
U8485A Option 100 10 MHz to 33 GHz
U8485A Option 200 DC to 33 GHz
U8487A Option 100 10 MHz to 50 GHz
U8488A Option 100 10 MHz to 67 GHz
67 GHz to 70 GHz
U8489A Option 200 DC to 120 GHz
Power range –35 dBm to 20 dBm
Power linearity
1
≤+15 dBm ± 0.50% (25 °C ± 10 °C)
± 0.55% (0 to 55 °C)
>+15 to +20 dBm ± 0.55% (25 °C ± 10 °C)
± 0.60% (0 to 55 °C)
Zero set (20% to 70% RH)
2
± 25 nW
3
± 35nW
3
(U8489A)
Internal calibration accuracy
4
± 0.52% (25 ± 10 °C)
± 0.59% (0 to 55 °C)
Zeroing duration 16 s
Internal calibration duration 1.5 s
External calibration duration 9 s
Damage level AC coupled (option 100) 25 dBm (average power), 50 V (DC)
15 W (2 μs duration) (peak power)
DC coupled (option 200) 25 dBm (average power), 4 V (DC)
15 W (2 μs duration) (peak power)
1. After zeroing and calibration at room temperature. Power Linearity is negligible below -1 dBm. Linearity specifications do not include zero set, zero noise or
measurement noise that dominantly contribute to the measurement uncertainty at the power levels within 10 dB of the lowest measurable power. Typical
performance is given in Figure 1.
2. RH is the abbreviation for relative humidity.
3. Tested at 50 MHz. After the sensor has been turned on for a minimum of 1 hour. Number of averages at 256.
4. The U8480 Series is equipped with an internal calibration capability, which means that it does not require a 1 mW power reference for calibration. This
specification applies for the 50 MHz frequency.
Power linearity
Figure 1. Typical U8480 Series power linearity at 25 °C with measurement uncertainty of ± 0.21%