Performing Frequency Measurements; Figure 1-14 Frequency Terminal Connection And Display - Agilent Technologies U3401A User's Manual And Service Manual

1 Getting Started

Performing frequency measurements

Use the frequency counter for low voltage applications. Do not use the frequency
WA R N I N G
counter on AC power line systems.
• Five ranges:
• Measurement method: Reciprocal counting technique. AC coupled input using AC voltage function
• Signal level: 10% of range to full scale input on all ranges
• Gate time: 0.1 s or 1 period of the input signal, whichever is longer
• Input protection: 1000 V RMS on all ranges
1 Press
2 Connect the red and black test leads to the input terminal as shown in
3 Probe the test points and read the display. In autoranging mode, the

Figure 1-14 Frequency terminal connection and display

22
• 500.00 mV, 5.0000 V, 50.000 V, 500.000 V, 750.000 V
• Range is based on the voltage level of the signal, not frequency
.
Figure 1- 14.
multimeter automatically selects the appropriate range and the
measurement is displayed.
+
Frequency
source
–
U3401A User's and Service Guide