Attenuation (db) – Atec Agilent-8490 Series User Manual
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Connector type
Frequency range (GHz)
Measured SWR
1.0 to 1.35
Measured SWR
1.35 to 1.86
Male Type -N
dc to 12.4
12.4 to 18.0
±0.025
±0.031
±0.041
±0.050
Female Type -N
dc to 8.0
8.0 to 12.4
12.4 to 18.0
±0.025
±0.031
±0.042
±0.046
±0.063
±0.071
Male SMA
dc to 8.0
8.0 to 12.4
12.4 to 18.0
±0.031
±0.045
±0.077
±0.054
±0.084
±0.137
Female SMA
dc to 8.0
8.0 to 12.4
12.4 to 18.0
±0.054
±0.077
±0.122
±0.088
±0.132
±0.206
Male APC-3.5
dc to 8.0
8.0 to 12.4
12.4 to 18.0
±0.025
±0.031
±0.045
±0.041
±0.050
±0.067
Female APC-3.5
dc to 10
10 to 18
18 to 26.5
±0.020
±0.025
±0.035
±0.031
±0.037
±0.050
Table 1. SWR data uncertainties
Table 2. Coaxial attenuator calibration frequencies* (MHz)
100
4500
9000
13000
16750
500
5000
9500
13500
17000
1000
5500
10000
14000
17250
1500
6000
10500
14500
17500
2000
6500
11000
15000
17750
2500
7000
11500
15500
18000
3000
7500
12000
16000
3500
8000
12400
16250
4000
8500
12500
16500
(each 250 MHz
to 26.5 GHz
*dc to 12.4 GHz models include 26 frequencies, dc to 18 GHz
models include 42 frequencies, dc to 26.5 GHz models include
67 frequencies (2 to 26.5 GHz).
Table 3. Attenuation data uncertainties
Attenuation
(dB)
0.1 to 2.0 GHz
2 to 6 GHz
6 to 12.4 GHz
12.4 to 18.0 GHz
18.0 to 26.5 GHz
3
±0.07
±0.06
±0.07
±0.11
±.15
6
±0.07
±0.07
±0.07
±0.11
±.15
10
±0.08
±0.07
±0.08
±0.12
±.15
20
±0.09
±0.08
±0.09
±0.13
±.15
30
±0.12
±0.11
±0.12
±0.15
±0.18
40
±0.15
±0.14
±0.15
±0.21
±0.25
50
±0.23
±0.23
±0.23
±0.34
n/a
60
±0.50*
±0.48*
±0.90*
±0.90*
n/a
8491, 8492 and 8493 Attenuation data uncertainty
(dB)
*The uncertainties noted represent 99.7% probability values.