Agilent / HP / Keysight 3581C
3581C Selective Level Meter
This unit is a used selective voltmeter that covers the frequency range of 15Hz to 50KHz.
It has wide application in testing special service circuits in both inside and outside plant maintenance.
It can do spectrum analysis, measure non-linear distortion and locate and measure unwanted spurious and induced tones.
Display is a 5 digit LED readout
R resolution of 1Hz
Accuracy of ±3Hz
Typical stability is ±10Hz/hour, after 1 hour ±5 Hz/ºC
Automatic frequency control (AFC) hold in range is ±800Hz
Linear amplitude is 30V to 100nV
full scale and Log is 30dBm or dBV to -150dBm or dBV. 50Hz to 50kHz scan width (adjustable)
Sweep times of 0.1S to 2000S
Single or repetitive scan modes
DC Voltage Range: 30V to 100nV
Frequency Range: 15Hz to 50KHz
Number of Digits: 5
Resistance Range: (brdg) 10
See Multimeters group 13: (unbal) 1