Datasheet
12
[1] Auto ranging is used when dBm operation is selected.
[2] In VDC 1000 V range, 1200 V is readable. In VAC 750 V range, 1000 V is readable.
[3] Reading is displayed in dB when relative (REL) operation is used.
[4] Input voltage <200 V RMS.
[5] For input voltage within the frequency range of 50 Hz to 1 kHz.
[1] Auto ranging is used when dBm operation is selected.
[2] In VAC 750 V range, 5% over-range is readable.
[3] Reading is displayed in dB when relative (REL) operation is used.
[4] For input voltage within the frequency range of 45 Hz to 1 kHz.
Decibel (dB) calculation
Range and accuracy (±dB)
U3401A 4.5-digit DMM
U3402A 5.5-digit DMM
Voltage range
[1][2]
Input voltage
dBm
[3]
range at 600 W ref
Accuracy (1 year; 23 ºC ± 5 ºC)
30 Hz to 50 Hz 50 Hz to 10 kHz 10 kHz to 100 kHz
500.00 mV 20 mV to 500 mV –29.82 to –3.80 0.3 0.3 0.7
5.0000 V 5000 mV to 5 V –3.80 to 16.20 0.2 0.2 0.5
50.000 V 5 V to 50 V 16.20 to 36.20 0.2 0.2 0.5
500.00 V 50 V to 500 V 36.20 to 56.20 0.2
[4]
0.2 0.5
[4]
1000.0 VDC 500 V to 1000 V 56.20 to 62.22 Not specified 0.2
[5]
Not specified
750.0 VAC 500 V to 750 V 56.20 to 59.72 Not specified 0.2
[5]
Not specified
Rate Voltage range
[1][2]
Input voltage dBm
[3]
range
at 600 W ref
Accuracy (1 year; 23 ºC ± 5 ºC)
20 Hz to 45 Hz 45 Hz to 10 kHz 10 kHz to 100 kHz
Slow 120.000 mV
1.20000 V
12.0000 V
120.000 V
1000.00 VDC
750.00 V
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
–42.20 to –16.20
–16.20 to 3.80
3.80 to 23.80
23.80 to 43.80
43.80 to 62.22
43.80 to 59.72
1.0
0.8
0.8
0.8
Not specified
Not specified
0.2
0.1
0.1
0.1
1.0
[4]
1.0
[4]
1.0
0.8
0.8
0.8
Not specified
Not specified
Medium 400.00 mV
4.0000 V
40.000 V
400.00 V
1000.0 VDC
750.0 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
–31.76 to –5.74
–5.74 to 14.26
14.26 to 34.26
34.26 to 54.26
54.26 to 62.22
54.26 to 59.72
1.0
0.8
0.8
0.8
Not specified
Not specified
0.2
0.1
0.1
0.1
1.0
[4]
1.0
[4]
1.0
0.8
0.8
0.8
Not specified
Not specified
Fast 400.0 mV
4.000 V
40.00 V
400.0 V
1000 VDC
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
–31.76 to –5.74
–5.74 to 14.26
14.26 to 34.26
34.26 to 54.26
54.26 to 62.22
54.26 to 59.72
1.0
0.8
0.8
0.8
Not specified
Not specified
0.2
0.1
0.1
0.1
1.0
[4]
1.0
[4]
1.0
0.8
0.8
0.8
Not specified
Not specified