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

Zero set

± 500 pW

< ± 150 pW

< 700 pW

± 500 nW

< ± 150 nW

< 700 nW

± 5 nW

< ± 1.5 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

1

2

4

8

16

32

64

128

256

512

1024

Noise multiplier

Normal mode

x2 mode

5.5

6.5

3.89

4.6

2.75

3.25

1.94

2.3

1

1.63

0.85

1

0.61

0.72

0.49

0.57

0.34

0.41

0.24

0.29

0.17

0.2