Keysight Technologies U1253B Schnellstart Handbuch Seite 17

3 Connect the red and black test leads to input
4 Probe the test points and read the display.
5 If the reading is unstable or zero, press
6 The signal is out of the U1253B frequency
–
WARNING
–
Keysight U1253B Quick Start Guide
terminals V (red) and COM (black)
respectively.
to select division of input signal frequency by
100 ( will be shown on the display). This
accommodates a higher frequency range of
up to 20 MHz.
measurement range of 20 MHz if the reading
is still unstable after
Use the frequency counter for low voltage
applications. Never use the frequency counter on
AC power line systems.
For input more than 30 Vpp, you are required to
use frequency measurement mode available under
the current or voltage measurement instead of
frequency counter.
step 5.
17