DATA SHEE T N8480 Series Thermocouple Power Sensors
Introduction The Keysight Technologies, Inc. N8480 Series thermocouple power sensors are amongst the most accurate and reliable sensors, plus they include EEPROM, and extended frequency and power ranges. Accurate, repeatable measurements Here’s how: Excellent linearity (1% approximately) and noise specifications. The sensors’ low SWR further enhances accuracy by minimizing mismatch uncertainty. These sensors also come with dual-range power for greater sensitivity to fluctuating signals.
Compatible Power Meters To get your existing power meters up-and-running in supporting the N8480 Series, just download their firmware upgrades online at www.keysight.com > Technical Support > Drivers & Software > Firmware Update Power meter EPM Series power meters EPM-P Series power meters P-Series power meters Model number E4418B E4419B N1913A N1914A E4416A E4417A N1911A N1912A Compatible firmware revision A1.09.01 and above A2.09.01 and above A.01.00 and above A.01.00 and above A1.05.01 and above A2.
Conditions The power meter and power sensor meet their specifications when: –– Stored for a minimum of two hours at a stable temperature within the operating temperature range and turned on for at least 30 minutes –– The power meter and power sensor are within their recommended calibration periods –– Used in accordance to the information provided in the power meter’s user’s guide Performance Characteristics Specifications stated hereon refer to all N8480 Series power sensors, unless otherwise stated.
Performance Characteristics (continued) Maximum SWR 1 Maximum SWR Sensor model Frequency band 25 ±10°C 0 to 55°C N8481A 10 to 30 MHz 30 to 50 MHz 50 MHz to 2 GHz 2 to 12.4 GHz 12.4 to 18 GHz 1.37 1.14 1.08 1.16 1.23 1.57 1.16 1.11 1.16 1.25 N8482A 100 to 300 kHz 300 kHz to 1 MHz 1 MHz to 2 GHz 2 to 6 GHz 1.54 1.17 1.06 1.07 1.57 1.17 1.06 1.08 N8485A 10 to 50 MHz 50 to 100 MHz 100 MHz to 2 GHz 2 to 12.4 GHz 12.4 to 18 GHz 18 to 26.5 GHz 26.5 to 33 GHz 2 1.33 1.08 1.05 1.14 1.19 1.26 1.32 1.
1.20 1.18 1.16 1.14 1.12 1.10 1.08 1.06 1.04 1.02 1 1.04 1.03 SWR SWR Performance Characteristics (continued) 1.01 1 0 2 4 6 8 10 12 Frequency GHz 14 16 18 0 5 10 15 20 Frequency GHz 25 30 35 Typical SWR, 10 MHz to 26.5 GHz (25 ±10°C) for N8485A sensor 1 2 3 4 Frequency GHz 5 6 0 10 20 30 40 Frequency GHz 50 60 Typical SWR, 50 MHz to 50 GHz (25 ±10°C) for N8487A power sensor 1.41 1.25 1.36 1.31 SWR 1.20 SWR 1.20 1.18 1.16 1.14 1.12 1.10 1.08 1.06 1.04 1.02 1 1.30 1.15 1.
Performance Characteristics (continued) 1.22 1.08 1.20 1.07 1.18 1.06 1.05 1.14 SWR SWR 1.16 1.12 1.10 1.03 1.08 1.02 1.06 1.01 1.04 26.5 1 29 31.5 34 36.5 Frequency GHz 39 41.5 Typical SWR, 26.5 to 40 GHz (25 ±10°C) for N8486AR power sensor 1.026 1.024 1.022 SWR 1.020 1.018 1.016 1.014 1.012 1.
Performance Characteristics (continued) Power linearity 1 The N8480 Series power sensors’ linearity is negligible except for the power range specified in the table below. Sensor model Power range Linearity (25 ±10°C) Linearity (0 to 55°C) N8481A, N8482A, N8485A, N8487A, N8488A, N8486AR, N8486AQ –1 to < +15 dBm ±0.52% ±0.80% +15 to +20 dBm ±0.80% ±1.90% N8481B, N8482B +29 to < +39 dBm ±0.52% ±0.80% +39 to +44 dBm ±1.66% ±2.75% +17 to < +30 dBm ±0.77% ±1.05% +30 to +35 dBm ±2.84% ±3.
Performance Characteristics (continued) Zero set, zero drift and measurement noise Sensor model Sensor option Range Conditions (RH) 1 Zero set 4 Zero drift 2, 4 Measurement noise 3, 4 N8481A, N8482A, N8485A, N8487A, N8486AR, N8486AQ Standard Upper up to 70% ±63 nW < ±7 nW < 114 nW Lower up to 70 % ±25 nW < ±3 nW < 80 nW Option CFT N/A 5 up to 70% ±63 nW < ±7 nW < 114 nW N8488A Standard Upper up to 70% ±63 nW < ±7 nW < 114 nW N8481B, N8482B N8481H, N8482H Lower up to 70 %
Performance Characteristics (continued) Switching point The N8480 Series power sensors (excluding Option CFT) have two measurement ranges: a lower power range and an upper power range. The power meter automatically selects the proper power level range. To avoid unnecessary switching when the power level is near the switch point, switching point hysteresis has been added.
Performance Characteristics (continued) Settling time 1 Manual filter, 10-dB decreasing power step for normal and x2 modes (not across switching point) Number of averages 1 2 4 8 16 32 64 128 256 512 1024 Normal speed 0.15 0.2 0.3 0.5 1.1 1.9 3.4 6.6 13 27 57 x2 speed 0.15 0.18 0.22 0.35 0.55 1.1 1.9 3.5 6.9 14.5 33 Settling time (s) 1.
Performance Characteristics (continued) Calibration factor uncertainty The typical measurement uncertainties listed are not to be taken as the maximum CF measurement uncertainties. 25 ±3°C Frequency N8481A N8481B N8481H N8482A N8482B N8482H N8485A N8487A N8486AR N8486AQ 100 kHz to 10 MHz — — — 0.91 1.48 0.89 — — — — 10 to 30 MHz 0.82 1.42 0.77 0.78 1.43 0.79 0.82 — — — 30 to 500 MHz 0.77 1.48 0.89 0.77 1.49 0.89 1.24 1.33 — — 500 MHz to 1.2 GHz 0.78 1.48 0.
Performance Characteristics (continued) Calibration factor uncertainty (continued) The typical measurement uncertainties listed are not to be taken as the maximum CF measurement uncertainties. 25 ±10°C Frequency N8481A N8481B N8481H N8482A N8482B N8482H N8485A N8487A N8486AR N8486AQ 100 kHz to 10 MHz — — — 1.28 2.40 0.99 — — — — 10 to 30 MHz 1.47 1.98 1.39 1.03 1.84 0.86 0.94 — — — 30 to 500 MHz 1.03 1.91 1.10 1.03 1.83 0.98 1.43 1.84 — — 500 MHz to 1.2 GHz 0.
Performance Characteristics (continued) Calibration factor uncertainty (continued) The typical measurement uncertainties listed are not to be taken as the maximum CF measurement uncertainties. 0 ±55°C Frequency N8481A N8481B N8481H N8482A N8482B N8482H N8485A N8487A N8486AR N8486AQ 100 kHz to 10 MHz — — — 1.59 2.67 1.41 — — — — 10 to 30 MHz 4.46 3.64 2.83 0.91 1.73 0.86 1.25 — — — 30 to 500 MHz 1.57 2.22 1.44 1.16 1.77 1.03 1.98 2.14 — — 500 MHz to 1.2 GHz 1.
Performance Characteristics (continued) Typical CF and SWR versus frequency The chart below shows supplemental characteristics intended to provide additional information, useful in applying the power sensor by giving typical but not warranted performance parameters. 1.25 100 99 Typical CF 1.2 Typical SWR 98 Cal factor 97 96 1.1 95 1.05 94 SWR 1.15 11 93 0.95 92 91 0.05 1 4 8 12 15 18 23 27 0.9 Frequency GHz Find us at www.keysight.
Performance Characteristics (continued) General specifications Dimensions and weight Dimensions (W x H x L) Weight N8481A/82A: 38 mm W x 30 mm H x 130 mm L N8485A: 38 mm W x 30 mm H x 121 mm L N8487A: 38 mm W x 30 mm H x 121 mm L N8488A: 38 mm W x 30 mm H x 115 mm L N8486AR: 38 mm W x 62 mm H x 152 mm L N8486AQ: 38 mm W x 62 mm H x 152 mm L N8481B/82B: 83 mm W x 114 mm H x 283 mm L N8481H/82H: 38 mm W x 30 mm H x 174 mm L N8481A/2A: Net: 0.181 kg (0.40 lb) Shipping: 0.90 kg (1.98 lb) N8485A: Net: 0.
Ordering Information Power sensors Standard power sensors Description Frequency range Power range N8481A Standard N8481A model with EEPROM feature 10 MHz to 18 GHz –35 to +20 dBm N8482A Standard N8482A model with EEPROM feature 100 kHz to 6 GHz –35 to +20 dBm N8485A Standard N8485A model with EEPROM feature 10 MHz to 26.
Ordering Information (continued) Accessories, calibration and documentation options Connectors Description Option 100 –– Type-N (male) connector for N8481A/N8482A/N8481B/N8482B/N8481H/N8482H –– 3.5 mm (male) connector for N8485A –– 2.4 mm (male) connector for N8487A –– 1.85 mm (male) connector for N8488A –– Waveguide connector for N8486AR/N8486AQ Option 200 APC-7 (male) connector for N8481A only Cables Description 11730A For EPM Series power meters: 1.