N1914A Datasheet, PDF (6/28 Pages) Keysight Technologies – EPM Series Power Meters E-Series and 8480 Series Power Sensors

06 | Keysight | N1913A and N1914A EPM Series Power Meters / E-Series and 8480 Series Power Sensors - Data Sheet
N1913A/14A EPM Series Power Meters Performance Characteristics (continued)
1 mW power reference
Power output
1.00 mW (0.0 dBm). Factory set to ± 0.4 % traceable to the National Physical Laboratories (NPL), UK
Accuracy (for two years)
± 0.4% (25 ± 10 ºC)
± 1.2% (0 to 55 ºC)
Frequency
50 MHz nominal
SWR
1.05 (typical), 1.08 (0 to 55 ºC)
Connector type
Type-N (f), 50 Ω
Measurement speed
Using remote interface (over the GPIB, USB or LAN), three measurement speed modes are available as shown, along with the typical maximum
measurement speed for each mode.
With N1913A power meter
Normal: 20 readings/second
x2: 40 readings/second
Fast: 400 readings/second, for Keysight E- Series power sensors only
With N1914A power meter
The measurement speed is reduced, for example, with both channels in FAST mode, the typical maximum measurement
speed is 200 readings/second.
Fast mode is for Keysight E-Series power sensors only.
Maximum measurement speed is obtained using binary output in free run trigger mode.
Table 1. Power sensors zero set, zero drift and measurement noise
Model
E9300A, E9301A, E9304A³
E9300B, E9301B³
E9300H, E9301H³
Zero set
± 500 pW
± 500 nW
± 5 nW
Zero drift¹
< ± 150 pW
< ± 150 nW
< ± 1.5 nW
Measurement noise²
< 700 pW
< 700 nW
< 7 nW
E4412A, E4413A
± 50 pW
< ± 15 pW
< 70 pW
N8481A, N8482A, N8485A, N8487A, N8486AR, N8486AQ
± 25 nW
< ± 3 nW
< 80 nW
8483A
± 50 nW
< ± 10 nW
< 110 nW
N8481B, N8482B
± 50 μW
< ± 10 μW
< 110 μW
8481D, 8485D, 8487D
± 20 pW
< ± 4 pW
< 45 pW
N8481H, N8482H
± 5 μW
< ± 1 μW
< 10 μW
R8486D, Q8486D
± 30 pW
< ± 6 pW
< 65 pW
V8486A, W8486A
± 200 nW
< ± 40 nW
< 450 nW
1.  Within 1 hour after zero set, at a constant temperature, after a 24-hour warm-up of the power meter.
2.  The number of averages at 16 for normal mode and 32 for x2 mode, at a constant temperature, measured over a one minute interval and two standard
deviations. For E-Series sensors, the measurement noise is measured within the low range. Refer to the relevant sensor manual for further information.
3.  Specification applies to the low power path, 15% to 75% relative humidity.
The 8480 Series sensors in the table do not include discontinued models.
Table 2. Noise multiplier
Number of averages
Noise multiplier
Normal mode
x2 mode
1
2
4
8
16
32
64
128
256
512
1024
5.5
3.89 2.75 1.94 1
0.85 0.61 0.49 0.34 0.24 0.17
6.5
4.6
3.25 2.3
1.63 1
0.72 0.57 0.41 0.29 0.2