Continued) – Atec Agilent-EPM Series User Manual
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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 55ºC)
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
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 Agilent 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
Zero drift
1
Measurement noise
2
E9300A, E9301A, E9304A
3
±500 pW
<±150 pW
<700 pW
E9300B, E9301B
3
±500 nW
<±150 nW
<700 nW
E9300H, E9301H
3
±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