Specifications and Characteristics 3
U2000 Series Operating and Service Guide 47
Zero Set, Zero Drift, and Measurement Noise
For U2000/1/2A,
For U2004A,
For U2000/1/2H,
Range
1
Zero Set (Internal) Zero Set (External) Zero Drift
2
Measurement
Noise
3
Noise Per
Sample
4
–60 dBm to –35 dBm ±1.5 nW ±600 pW 200 pW 1 nW N/A
–38 dBm to –15 dBm ±2 nW ±1.5 nW 400 pW 1.5 nW 90 nW
–20 dBm to –9 dBm ±12 nW ±10 nW 1.5 nW 15 nW 1 µW
–11 dBm to –5 dBm ±2 µW ±500 nW 50 nW 650 nW 55 µW
–7 dBm to 15 dBm ±4 µW ±1 µW 500 nW 1 µW 85 µW
10 dBm to 20 dBm ±6 µW ±5 µW 2 µW 10 µW 550 µW
Range
1
Zero Set (Internal) Zero Set (External) Zero Drift
2
Measurement
Noise
3
–60 dBm to –35 dBm ±2.8 nW ±600 pW 200 pW 1 nW
–38 dBm to –15 dBm ±3 nW ±1.5 nW 400 pW 1.5 nW
–20 dBm to –9 dBm ±12 nW ±10 nW 1.5 nW 15 nW
–11 dBm to –5 dBm ±2 µW ±500 nW 50 nW 650 nW
–7 dBm to 15 dBm ±4 µW ±1 µW 500 nW 1 µW
10 dBm to 20 dBm ±6 µW ±5 µW 2 µW 10 µW
Range
1
Zero Set (Internal) Zero Set (External) Zero Drift
2
Measurement
Noise
3
Noise Per
Sample
4
–50 dBm to –25 dBm ±15 nW ±8 nW 2 nW 10 nW N/A
–28 dBm to –5 dBm ±20 nW ±20 nW 4 nW 15 nW 900 nW
–10 dBm to 1 dBm ±120 nW ±100 nW 15 nW 150 nW 10 µW
–1 dBm to 5 dBm ±20 µW ±20 µW 500 nW 6.5 µW 550 µW
3 dBm to 25 dBm ±40 µW ±30 µW 5 µW 10 µW 850 µW
20 dBm to 30 dBm ±60 µW ±60 µW 20 µW 100 µW 5.5 mW