Keysight U1271A - Figure 2-11 ZLOW Display

Making Measurements 2
Using Z
LOW
for Voltage Measurements (U1272A only)
U1271A/U1272A User’s Guide 69
Figure 2-11 Z
LOW
display
During Z
LOW
measurements, autoranging is disabled and the
multimeter’s range is set to 1000 volts in the manual ranging
mode.
Use Z
LOW
to test a battery’s health
Aside from reading a battery’s voltage level using the DC
voltage measurement function, you can also use the Z
LOW
function to test a battery’s health.
If you detect that the measured battery’s voltage shown in
the Z
LOW
function is declining gradually, this means that the
capacity of battery- under- test is not enough to support
regular functions. Use this simple and quick test to
determine if a battery has enough voltage capacity to
support regular activities.
NOTE
Prolonged used of the Z
LOW
function will consume the capacity of the
battery-under-test.