Datasheet

17
Electrical Specifications
Peak hold
Signal width Accuracy for DC Voltage and Current
Single event >1 ms Specified accuracy + 400
Repetitive >250 µs Specified accuracy + 1000
Decibel (dB) for U1272A and U1273A
1, 2, 3
dB base Reference Default reference
1 mW (dBm) 1 to 9999 Ω 50 Ω
1 V (dBV) 1 V 1 V
1. The reading of dBm is indicated in decibels of power above or below 1 mW, or decibels of voltage above or below 1 V. The formula is calculated
according to the voltage measurement and specified reference impedance. Its accuracy is depended on the accuracy of the voltage measurement.
See Decibel (dBV) accuracy table below.
2. Auto-ranging mode is used.
3. The bandwidth is according to voltage measurement.
Decibel (dBV) accuracy
Range
dBV range Accuracy
Minimum Maximum
45 Hz to
65 Hz
20 Hz to
1 kHz
1 Hz to
5 kHz
5 kHz to
20 kHz
20 Hz to
100 kHz
30 mV –56.48 –30.46 0.06 0.07 0.09 0.1 0.32
300 mV –36.48 –10.46 0.06 0.07 0.09 0.1 0.32
3 V –16.48 +9.54 0.06 0.09 0.14 0.19 0.32
30 V +3.52 +29.54 0.06 0.09 0.14 0.19 0.32
300 V +23.52 +49.54 0.06 0.09 0.14 0.19 —
1000 V +33.98 +60 0.06 0.09 0.14 — —
Measurement rate (approximate)
Function
Times/second
U1271A U1272A/U1273A/U1273AX
ACV 7 7
DCV 7 7
Ω1414
Ω with offset compensation - 3
Diode 14 14
Auto Diode - 3
Capacitance 4 (< 100 µF) 4 (< 100 µF)
DCA 7 7
ACA 7 7
Temperature 7 7
Frequency 2 (> 10 Hz) 2 (> 10 Hz)
Duty cycle 1 (> 10 Hz) 1 (> 10 Hz)
Pulse width 1 (> 10 Hz) 1 (> 10 Hz)