Decibel (Db) Calculation - Agilent Technologies U3402A User's And Service Manual

U3402-90001.book Page 101 Friday, July 24, 2009 4:04 PM
Table 6-11 Range and accuracy (±dB)
Voltage
Rate range
120.000 mV
1.20000 V
12.0000 V
Slow
120.000 V
1000.00 VDC
750.00 VAC
400.00 mV
4.0000 V
40.000 V
Medium
400.00 V
1000.0 VDC
750.0 VAC
400.0 mV
4.000 V
40.00 V
400.0 V
Fast
1000 VDC
750 VAC
[1]
Autoranging is used when dBm operation is enabled.
[2]
In VAC 750 V range, 5% over-range is readable.
[3]
Reading displayed in dB when Rel operation is used.
[4]
For input voltage at frequency between 45 Hz to 1 kHz.
U3402A User's and Service Guide
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Decibel (dB) Calculation

Input voltage
[1][2]
6 mV to 120 mV
120 mV to 1.2 V
1.2 V to 12 V
12 V to 120 V
120 V to 1000 V
120 V to 750 V
20 mV to 400 mV
400 mV to 4 V
4 V to 40 V
40 V to 400 V
400 V to 1000 V
400 V to 750 V
20 mV to 400 mV
400 mV to 4 V
4 V to 40 V
40 V to 400 V
400 V to 1000 V
400 V to 750 V
Specifications and Characteristics
[3]
dBm range at Accuracy (One year; 23ºC ± 5ºC)
600 ref
20 Hz to 45 Hz 45 Hz to 10 kHz 10 kHz to 100 kHz
–42.20 to –16.20 1.0
–16.20 to 3.80 0.8
3.80 to 23.80 0.8
23.80 to 43.80 0.8
43.80 to 62.22 –
43.80 to 59.72 –
–31.76 to –5.74 1.0
–5.74 to 14.26 0.8
14.26 to 34.26 0.8
34.26 to 54.26 0.8
54.26 to 62.22 –
54.26 to 59.72 –
–31.76 to –5.74 1.0
–5.74 to 14.26 0.8
14.26 to 34.26 0.8
34.26 to 54.26 0.8
54.26 to 62.22 –
54.26 to 59.72 –
[1]
0.2 1.0
0.1 0.8
0.1 0.8
0.1 0.8
[4]
1.0 –
[4]
1.0 –
0.2 1.0
0.1 0.8
0.1 0.8
0.1 0.8
[4]
1.0 –
[4]
1.0 –
0.2 1.0
0.1 0.8
0.1 0.8
0.1 0.8
[4]
1.0 –
[4]
1.0 –
6
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